2026 Aca Subsidy Calculator

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2026 ACA Subsidy Calculator

Estimate your 2026 Affordable Care Act (ACA) health insurance premium tax credit (subsidy) based on your expected household income and family size. This tool helps you understand potential cost savings for marketplace plans.

ACA Subsidy Estimator

Enter your total expected annual income for your tax household in 2026.
Enter the total number of dependents claimed on your tax return.
Enter the total monthly cost of the health plan you are considering.
Estimated Monthly Subsidy: $0.00
Your Expected % of Income for Benchmark Plan: 0.00%
Benchmark Silver Plan Premium: $0.00
Your Expected Monthly Contribution: $0.00

Subsidy Impact Visualization

Comparison of your expected contribution vs. the total benchmark premium with and without subsidy.

Subsidy Calculation Factors
Factor Description Unit
Household Income Your total expected annual income for the tax household. USD
Family Size Number of people in your tax household. Count
Federal Poverty Level (FPL) The benchmark income level set by the government, adjusted for family size. % of FPL
Applicable Percentage The maximum percentage of household income you're expected to contribute towards a benchmark plan, based on FPL. %
Benchmark Plan Premium The second lowest-cost Silver plan premium in your area for your family size. USD/Month
Premium Tax Credit (Subsidy) The amount the government contributes to lower your health insurance premium. USD/Month

What is the 2026 ACA Subsidy?

The 2026 ACA Subsidy, also known as the Premium Tax Credit (PTC), is a financial assistance program established by the Affordable Care Act (ACA) to help lower-income individuals and families afford health insurance purchased through the Health Insurance Marketplace. For 2026, these subsidies are designed to cap the amount a household pays for their health insurance premiums, ensuring that essential coverage remains accessible and affordable. The core principle is to link the cost of health insurance to your household income, preventing premiums from consuming an excessively large portion of your budget. This means that if your income is below a certain threshold relative to the Federal Poverty Level (FPL), you may qualify for a subsidy that directly reduces your monthly premium payments.

Who should use the 2026 ACA Subsidy Calculator?

Anyone looking to purchase health insurance through the Health Insurance Marketplace for the 2026 plan year should use this calculator. This includes individuals and families who:

  • Do not have access to affordable employer-sponsored health insurance.
  • Are self-employed or work for small businesses that don't offer coverage.
  • Are currently uninsured and seeking coverage.
  • Want to estimate their potential out-of-pocket costs for health insurance.
  • Are comparing different plan options and want to understand how subsidies affect affordability.

Common Misconceptions about ACA Subsidies:

  • Myth: Subsidies are only for very low-income individuals. Reality: Subsidies are available to households with incomes between 100% and 400% of the Federal Poverty Level (FPL). For those above 400% FPL, the American Rescue Plan Act and Inflation Reduction Act have extended subsidies through 2025, and policymakers are considering making these enhancements permanent beyond 2025, effectively removing the upper income cap for subsidy eligibility in many cases. For 2026, this trend towards broader access is expected to continue.
  • Myth: The subsidy covers the entire premium. Reality: The subsidy typically covers a portion of the premium for a benchmark (Silver) plan. You are still responsible for paying the remaining portion, which is your "expected contribution" based on your income.
  • Myth: You can only enroll during Open Enrollment. Reality: While Open Enrollment is the primary period, qualifying life events (like losing other coverage, marriage, birth of a child) can trigger a Special Enrollment Period, allowing you to enroll outside the standard window.

2026 ACA Subsidy Calculator Formula and Mathematical Explanation

The calculation for the 2026 ACA Subsidy (Premium Tax Credit) is based on determining the difference between the cost of a benchmark health plan and the amount you are expected to contribute based on your household income and family size. The Affordable Care Act sets a sliding scale for this contribution, expressed as a percentage of your Modified Adjusted Gross Income (MAGI).

Step-by-Step Calculation:

  1. Determine Household Income (MAGI): The calculator uses your estimated 'Household Income'. This generally aligns with your Modified Adjusted Gross Income (MAGI) reported on your federal tax return.
  2. Determine Family Size: This is the number of people you expect to claim on your tax return for 2026.
  3. Find the Federal Poverty Level (FPL) for 2026: HHS releases FPL guidelines annually. For 2026 calculations, we'll use projected FPL guidelines, which adjust based on family size. A household's FPL status is determined by comparing their MAGI to the FPL for their family size.
  4. Determine the Applicable Percentage: The ACA legislation dictates the maximum percentage of MAGI that a household is expected to contribute towards the premium of a benchmark plan. This percentage decreases as income approaches the FPL range. For 2026, the enhanced subsidies mean this percentage is capped, with the upper limit effectively removed for many households due to the extended subsidies. The formula used in this calculator reflects the updated figures and ranges applicable for 2026, aligning with the structure of the enhanced subsidies. A key element is the "premium הלייכטיגקייַט" which was 8.5% of MAGI but has been reduced for most eligible individuals. The calculator uses a graduated scale based on the latest available projections for 2026.
  5. Calculate Your Expected Contribution: Multiply your 'Household Income' by the 'Applicable Percentage' determined in the previous step. This gives you the maximum amount your household is expected to pay monthly for health insurance.
    Your Expected Monthly Contribution = Household Income * Applicable Percentage
  6. Identify the Benchmark Plan Premium: This is the premium for the second-lowest cost Silver plan available in your area for your family size. The calculator uses a placeholder or average estimate, but actual costs vary geographically.
  7. Calculate the Estimated Subsidy: The subsidy is the difference between the Benchmark Plan Premium and Your Expected Monthly Contribution. If your expected contribution is higher than the benchmark premium, you are not eligible for a subsidy.
    Estimated Subsidy = Benchmark Plan Premium - Your Expected Monthly Contribution
    If the result is negative, the subsidy is $0.00.

Variables Table:

Variable Meaning Unit Typical Range (for 2026 estimates)
Household Income (MAGI) Total annual income for the tax household before certain deductions. USD $0+ (depends on individual circumstances)
Family Size Number of individuals claimed on the tax return. Count 1+
Federal Poverty Level (FPL) Government-defined income threshold based on family size. % of FPL Varies based on income and family size. 2026 values are projected.
Applicable Percentage Maximum % of MAGI towards benchmark plan premium. % 0% – ~8.5% (effectively capped lower for most, especially with extended subsidies)
Benchmark Silver Plan Premium Cost of the second-lowest cost Silver plan. USD/Month $300 – $1200+ (highly variable by location and plan)
Your Expected Monthly Contribution Portion of benchmark premium you pay. USD/Month (Household Income / 12) * Applicable Percentage
Estimated Monthly Subsidy (PTC) Government assistance reducing your premium. USD/Month Max(0, Benchmark Plan Premium – Your Expected Monthly Contribution)

Note: 2026 FPL and subsidy parameters are projections based on current trends and legislation. Official figures will be released by HHS.

Practical Examples (Real-World Use Cases)

Example 1: Young Couple Seeking Coverage

Scenario: Sarah and Tom are a married couple, both under 30, living in Ohio. They don't have access to employer-sponsored insurance. For 2026, they estimate their combined household income (MAGI) will be $60,000. They are considering a Silver plan with a monthly premium of $480.

Inputs:

  • Estimated Household Income: $60,000
  • Number of People in Household: 2
  • Monthly Premium of Selected Plan: $480

Calculation Breakdown (Illustrative):

  • Assuming a 2-person household income of $60,000 falls within the range eligible for enhanced subsidies (e.g., roughly between 200% and 300% FPL for 2026).
  • Let's assume their 'Applicable Percentage' for a benchmark plan is approximately 5.5% of their MAGI.
  • Your Expected Monthly Contribution: ($60,000 / 12) * 5.5% = $5,000 * 0.055 = $275
  • Benchmark Silver Plan Premium: Let's assume the benchmark Silver plan for a 2-person household in their area is $550/month.
  • Estimated Monthly Subsidy: $550 (Benchmark Premium) – $275 (Your Contribution) = $275

Results:

  • Estimated Monthly Subsidy: $275.00
  • Your Expected % of Income for Benchmark Plan: 5.50%
  • Benchmark Silver Plan Premium: $550.00
  • Your Expected Monthly Contribution: $275.00

Financial Interpretation: Sarah and Tom can expect to receive a $275 monthly subsidy, reducing their out-of-pocket cost for the $480 plan. They will pay $205 ($480 – $275), and the government will cover the rest. Alternatively, they could use the $275 subsidy towards the $550 benchmark plan, paying only $275 monthly for a plan considered "affordable" based on their income.

Example 2: Family with Moderate Income

Scenario: The Chen family (2 adults, 2 children) resides in Texas. Their estimated MAGI for 2026 is $95,000. They are looking at a Silver plan costing $900 per month.

Inputs:

  • Estimated Household Income: $95,000
  • Number of People in Household: 4
  • Monthly Premium of Selected Plan: $900

Calculation Breakdown (Illustrative):

  • A 4-person household income of $95,000 might fall into a bracket where the ACA's enhanced subsidy structure (potentially above 400% FPL depending on specific legislation in 2026, or within the original range) caps their contribution significantly. Let's assume their 'Applicable Percentage' is capped at around 7.0%.
  • Your Expected Monthly Contribution: ($95,000 / 12) * 7.0% = $7,916.67 * 0.07 = $554.17 (rounded)
  • Benchmark Silver Plan Premium: Let's estimate the benchmark Silver plan for a family of 4 in their area at $1,100/month.
  • Estimated Monthly Subsidy: $1,100 (Benchmark Premium) – $554.17 (Your Contribution) = $545.83

Results:

  • Estimated Monthly Subsidy: $545.83
  • Your Expected % of Income for Benchmark Plan: 7.00%
  • Benchmark Silver Plan Premium: $1,100.00
  • Your Expected Monthly Contribution: $554.17

Financial Interpretation: The Chen family can receive a substantial subsidy of approximately $546 per month. If they choose the $900 plan, they would pay $354 ($900 – $546), significantly lowering their cost. If they opt for the benchmark $1,100 plan, their cost would be limited to $554 per month, making comprehensive health coverage much more manageable.

How to Use This 2026 ACA Subsidy Calculator

Using the 2026 ACA Subsidy Calculator is straightforward. Follow these steps to get your estimated subsidy amount:

  1. Estimate Your 2026 Household Income: Gather information about the expected income for everyone who will be part of your tax household in 2026. This typically includes wages, salaries, self-employment income, unemployment benefits, and certain other income sources. Be as accurate as possible, as this is the primary factor determining your subsidy.
  2. Determine Your Family Size: Count the number of individuals you expect to claim as dependents on your 2026 federal tax return.
  3. Find a Plan's Monthly Premium: Browse the Health Insurance Marketplace plans available for 2026 in your area. Note the total monthly premium (before subsidies) for the plan you are interested in.
  4. Enter the Information: Input your estimated household income, family size, and the chosen plan's monthly premium into the respective fields on the calculator.
  5. Click 'Calculate Subsidy': The calculator will process your inputs and display your estimated monthly subsidy.

How to Read the Results:

  • Estimated Monthly Subsidy: This is the amount the government will contribute towards your monthly health insurance premium.
  • Your Expected % of Income for Benchmark Plan: This shows the maximum percentage of your household income that the ACA considers "affordable" for a benchmark (Silver) plan premium.
  • Benchmark Silver Plan Premium: This is the estimated cost of the second-lowest priced Silver plan in your area. Your subsidy is calculated based on this plan's cost.
  • Your Expected Monthly Contribution: This is the amount you would pay out-of-pocket for the benchmark Silver plan after the subsidy is applied.

Decision-Making Guidance:

  • If your calculated subsidy significantly lowers the premium of your chosen plan, it's likely an affordable option.
  • Compare the cost of your chosen plan minus the subsidy to the benchmark plan cost minus the subsidy. You might pay less overall for the benchmark plan, or a plan with different benefits.
  • Remember that the subsidy is applied directly to your premium. You'll pay the difference.
  • If your income is projected to change significantly, recalculate your subsidy.
  • The final subsidy amount is determined during tax filing and when you enroll through the Marketplace.

Key Factors That Affect 2026 ACA Subsidy Results

Several critical factors influence the amount of ACA subsidy you receive. Understanding these can help you optimize your health insurance choices:

  1. Household Income (MAGI): This is the most significant factor. Lower MAGI generally results in a larger subsidy, as the government covers more of the benchmark premium cost. Income fluctuations can drastically alter subsidy amounts. Projected income for the tax year is crucial.
  2. Family Size: The Federal Poverty Level (FPL) guidelines are adjusted for family size. Larger families generally have higher FPL thresholds, meaning a higher income might still qualify for subsidies compared to a smaller family with the same income.
  3. Geographic Location: Health insurance premiums, especially for benchmark Silver plans, vary considerably by state and even by county. A benchmark plan that costs $500 in one area might cost $900 in another, directly impacting the potential subsidy amount.
  4. Income as a Percentage of FPL: The ACA subsidy structure is tiered based on how your household income compares to the FPL for your family size. The closer your income is to the FPL, the larger the subsidy you're likely to receive. The enhanced subsidies for 2026 aim to broaden this eligibility.
  5. Benchmark Plan Cost: The subsidy is calculated relative to the cost of the second-lowest cost Silver plan (the benchmark). If this benchmark plan's premium increases significantly, your subsidy amount will also increase, assuming your income and family size remain constant.
  6. Type of Plan Selected: While subsidies are calculated based on the benchmark Silver plan, you can enroll in Bronze, Gold, or Platinum plans. Your subsidy amount will be fixed based on the Silver benchmark, but it will be applied to the premium of the plan you choose. This means a lower-premium Bronze plan will cost you less out-of-pocket than a higher-premium Gold plan, even with the same subsidy amount.
  7. Changes in Legislation: ACA policies, including subsidy structures and income eligibility limits, can be modified by Congress. Future legislative changes could impact subsidy availability or amounts for 2026 and beyond.

Frequently Asked Questions (FAQ)

What is the Federal Poverty Level (FPL) for 2026?

The official FPL guidelines for 2026 are typically released by the Department of Health and Human Services (HHS) in January of the year they apply. For calculation purposes, we use projections based on recent trends. These levels vary based on family size.

Can I get a subsidy if my income is above 400% of FPL in 2026?

For coverage starting in 2023, the enhanced subsidies were extended by the Inflation Reduction Act through 2025, meaning individuals with incomes above 400% FPL can now receive assistance if they meet affordability criteria. Policymakers are actively discussing making these enhancements permanent. Therefore, for 2026, it's highly likely that subsidies will remain available for incomes above 400% FPL, effectively removing the upper income cap for eligibility for many.

What is MAGI, and how is it different from Adjusted Gross Income (AGI)?

Modified Adjusted Gross Income (MAGI) is similar to Adjusted Gross Income (AGI) but adds back certain deductions. For ACA subsidy purposes, MAGI generally includes your AGI plus any foreign earned income exclusion, housing exclusion, and certain other deductions. It's important to consult IRS guidelines or a tax professional for precise calculation.

Do I have to choose a Silver plan to get a subsidy?

No. Subsidies are calculated based on the premium of the second-lowest cost Silver plan (the benchmark). However, you can use that calculated subsidy amount towards any plan (Bronze, Gold, Platinum) in the Marketplace. Your actual premium will be the cost of your chosen plan minus your fixed subsidy amount.

What happens if my income changes during 2026?

If your income changes significantly (increases or decreases), you should report this change to the Marketplace as soon as possible. You may need to adjust your expected subsidy amount mid-year or reconcile it during tax filing. An income increase might reduce your subsidy, while a decrease might increase it.

Is the subsidy amount guaranteed?

The calculator provides an estimate based on your projected income and available plan data. The final subsidy amount is determined by the Health Insurance Marketplace when you enroll and is reconciled when you file your federal taxes. Accuracy in reporting income is key.

What is the "applicable percentage" for affordability?

The ACA originally capped the premium contribution for the benchmark plan at 9.5% of household income. For 2026, thanks to extended legislative measures, this percentage is significantly lower for most eligible individuals, often below 8.5%, and effectively capped much lower for those within certain income bands, making coverage more affordable across a wider income range.

Can I get a subsidy if I qualify for Medicare or Medicaid?

Generally, you cannot get an ACA Marketplace subsidy if you are eligible for Medicare or certain Medicaid programs. ACA coverage is intended for individuals who are not eligible for other forms of affordable minimum essential coverage, such as employer-sponsored insurance or government programs.

Related Tools and Internal Resources

Disclaimer: This calculator provides an estimate only. Actual subsidy amounts are determined by the Health Insurance Marketplace and the IRS based on your final application and tax filing. Premium and FPL figures for 2026 are estimates based on current data and projections.

// Constants for calculation (using projected 2026 figures) // These are illustrative and based on common formulas. Official 2026 FPL and subsidy brackets will be released by HHS. // The "Applicable Percentage" logic is simplified here. In reality, it's a tiered table based on FPL percentage. // Enhanced subsidies mean the capped % is lower for most. // Example FPL data (highly simplified for illustration) var fplData = { "1": { "2026_FPL": 15000, "2026_range_start": 0, "2026_range_end": 14999, "2026_perc_start": 0.00, "2026_perc_end": 0.00 }, // Below 100% FPL – typically Medicaid/CHIP "2": { "2026_FPL": 20200, "2026_range_start": 14999, "2026_range_end": 20199, "2026_perc_start": 0.00, "2026_perc_end": 0.02 }, // 100%-133% FPL – lowest tier "3": { "2026_FPL": 25400, "2026_range_start": 20199, "2026_range_end": 25399, "2026_perc_start": 0.02, "2026_perc_end": 0.03 }, // 133%-150% FPL "4": { "2026_FPL": 30600, "2026_range_start": 25399, "2026_range_end": 30599, "2026_perc_start": 0.03, "2026_perc_end": 0.04 }, // 150%-175% FPL "5": { "2026_FPL": 35800, "2026_range_start": 30599, "2026_range_end": 35799, "2026_perc_start": 0.04, "2026_perc_end": 0.05 }, // 175%-200% FPL "6": { "2026_FPL": 41000, "2026_range_start": 35799, "2026_range_end": 40999, "2026_perc_start": 0.05, "2026_perc_end": 0.06 }, // 200%-225% FPL "7": { "2026_FPL": 46200, "2026_range_start": 40999, "2026_range_end": 46199, "2026_perc_start": 0.06, "2026_perc_end": 0.07 }, // 225%-250% FPL "8": { "2026_FPL": 51400, "2026_range_start": 46199, "2026_range_end": 51399, "2026_perc_start": 0.07, "2026_perc_end": 0.08 }, // 250%-275% FPL // Enhanced Subsidies Example: Capping contribution at 8.5% for income up to 600% FPL, and effectively removing the cap above that. // This simplified model caps at 8.5% for 275%-600% FPL, and assumes >600% FPL is also capped near 8.5% or less due to reforms. // For simplicity, we will cap at 8.5% for 275% FPL and above for this calculator example. "9": { "2026_FPL": 56600, "2026_range_start": 51399, "2026_range_end": 56599, "2026_perc_start": 0.08, "2026_perc_end": 0.085 }, // 275%-300% FPL "10": { "2026_FPL": 61800, "2026_range_start": 56599, "2026_range_end": 61799, "2026_perc_start": 0.085, "2026_perc_end": 0.085 }, // 300%-350% FPL "11": { "2026_FPL": 67000, "2026_range_start": 61799, "2026_range_end": 66999, "2026_perc_start": 0.085, "2026_perc_end": 0.085 }, // 350%-400% FPL "12": { "2026_FPL": 72200, "2026_range_start": 66999, "2026_range_end": 72199, "2026_perc_start": 0.085, "2026_perc_end": 0.085 }, // 400%-450% FPL (Enhanced subsidy example) "13": { "2026_FPL": 77400, "2026_range_start": 72199, "2026_range_end": 77399, "2026_perc_start": 0.085, "2026_perc_end": 0.085 }, // 450%-500% FPL (Enhanced subsidy example) "14": { "2026_FPL": 82600, "2026_range_start": 77399, "2026_range_end": 82599, "2026_perc_start": 0.085, "2026_perc_end": 0.085 }, // 500%-550% FPL (Enhanced subsidy example) "15": { "2026_FPL": 87800, "2026_range_start": 82599, "2026_range_end": 87799, "2026_perc_start": 0.085, "2026_perc_end": 0.085 } // 550%-600% FPL (Enhanced subsidy example) // For simplicity, above 600% FPL, we'll assume the cap remains around 8.5% or determined by specific legislation. }; var benchmarkPremiumEstimate = 550; // Default average benchmark premium estimate per month function getApplicablePercentage(householdIncome, familySize) { var fplInfo = fplData[familySize]; if (!fplInfo) { // If family size is not directly mapped, use the largest available FPL bracket for that income level var largestFPLSize = 0; for (var size in fplData) { if (parseInt(size) > largestFPLSize && parseInt(size) 0) { fplInfo = fplData[largestFPLSize]; } else { return 0.095; // Default fallback if no FPL data found (e.g., very large family size not listed) } } var incomeFPLPercentage = (householdIncome / fplInfo.2026_FPL) * 100; // Simplified logic for Applicable Percentage based on income relative to FPL // This section reflects the spirit of the enhanced subsidies, capping contribution. if (householdIncome 600000) { // Assuming $600k is ~600% FPL for a typical family size in this example // Below minimum FPL range (might qualify for Medicaid/CHIP or zero subsidy) or very high income // For calculation purposes, let's cap at 8.5% for very high incomes based on current trends. if (householdIncome >= fplInfo.2026_range_start && householdIncome <= fplInfo.2026_range_end) { // Within the mapped FPL range for this family size if (incomeFPLPercentage = 100 && incomeFPLPercentage 150 && incomeFPLPercentage 200 && incomeFPLPercentage 300 && incomeFPLPercentage 400 && incomeFPLPercentage 600) return 0.085; // Assuming cap remains for higher incomes due to reforms } else { // Handle incomes outside the explicitly defined FPL ranges but still potentially eligible // This part needs careful definition based on exact 2026 rules. // For this example, assume incomes significantly above the highest mapped range still cap at 8.5% due to reforms. if (householdIncome / fplInfo.2026_FPL * 100 > 600) return 0.085; else return 0.095; // Fallback to original ACA cap if not clearly covered by enhanced rules } } else { // Mapped FPL range var incomePercentageOfFPL = (householdIncome / fplInfo.2026_FPL) * 100; if (incomePercentageOfFPL <= 100) { return fplInfo.2026_perc_start; // Lowest tier } else if (incomePercentageOfFPL <= 150) { // Interpolate between 100% and 150% FPL ranges var range = fplInfo.2026_range_end – fplInfo.2026_range_start; var progress = (householdIncome – fplInfo.2026_range_start) / range; return fplInfo.2026_perc_start + (fplInfo.2026_perc_end – fplInfo.2026_perc_start) * progress; } else if (incomePercentageOfFPL <= 400) { // This simplified model uses fixed rates based on common benchmarks for 150-400% FPL for clarity, // but the actual calculation can be more granular. if (incomePercentageOfFPL <= 200) return 0.035; // Example for 150-200% if (incomePercentageOfFPL <= 250) return 0.05; // Example for 200-250% if (incomePercentageOfFPL <= 300) return 0.065; // Example for 250-300% if (incomePercentageOfFPL <= 350) return 0.075; // Example for 300-350% return 0.085; // Example for 350-400% } else { // Enhanced Subsidies: For incomes above 400% FPL, recent legislation has capped the contribution. // We'll cap at 8.5% for incomes above 400% FPL, reflecting the extended subsidies. return 0.085; } } } function formatCurrency(amount) { return "$" + amount.toFixed(2); } function formatPercentage(percent) { return percent.toFixed(2) + "%"; } function calculateSubsidy() { var householdIncome = parseFloat(document.getElementById("householdIncome").value); var familySize = parseInt(document.getElementById("familySize").value); var monthlyPremium = parseFloat(document.getElementById("premium").value); // Clear previous errors document.getElementById("householdIncomeError").innerText = ""; document.getElementById("familySizeError").innerText = ""; document.getElementById("premiumError").innerText = ""; // Validation if (isNaN(householdIncome) || householdIncome < 0) { document.getElementById("householdIncomeError").innerText = "Please enter a valid positive income."; return; } if (isNaN(familySize) || familySize <= 0) { document.getElementById("familySizeError").innerText = "Please enter a valid family size (at least 1)."; return; } if (isNaN(monthlyPremium) || monthlyPremium < 0) { document.getElementById("premiumError").innerText = "Please enter a valid positive premium."; return; } var applicablePercentage = getApplicablePercentage(householdIncome, familySize); var benchmarkPremium = benchmarkPremiumEstimate; // Using the estimate var yourContribution = (householdIncome / 12) * applicablePercentage; var estimatedSubsidy = Math.max(0, benchmarkPremium – yourContribution); // If the selected plan premium is lower than the calculated contribution, // the subsidy is effectively capped by the plan's premium minus your contribution. // However, the subsidy is calculated based on the benchmark plan. // The user pays the difference: selectedPlanPremium – subsidy. // If selectedPlanPremium – subsidy is still too high, they might need a different plan or subsidy calculation. // For simplicity, we show the calculated subsidy and the user's contribution towards benchmark. document.getElementById("estimatedSubsidy").innerText = formatCurrency(estimatedSubsidy); document.getElementById("incomePercentage").innerText = formatPercentage(applicablePercentage * 100); document.getElementById("benchmarkPremium").innerText = formatCurrency(benchmarkPremium); document.getElementById("yourContribution").innerText = formatCurrency(yourContribution); var explanation = "The ACA subsidy is calculated by finding the difference between the cost of a benchmark Silver plan ($" + benchmarkPremium.toFixed(2) + "/month) and the amount your household is expected to contribute based on your income. "; explanation += "Your expected contribution is capped at " + (applicablePercentage * 100).toFixed(2) + "% of your estimated monthly income ($" + yourContribution.toFixed(2) + "/month). "; explanation += "The subsidy is the amount the government contributes to lower your premium, up to the cost of the benchmark plan."; document.getElementById("calculationExplanation").innerText = explanation; updateChart(estimatedSubsidy, yourContribution, benchmarkPremium); } function resetCalculator() { document.getElementById("householdIncome").value = ""; document.getElementById("familySize").value = ""; document.getElementById("premium").value = ""; document.getElementById("householdIncomeError").innerText = ""; document.getElementById("familySizeError").innerText = ""; document.getElementById("premiumError").innerText = ""; document.getElementById("estimatedSubsidy").innerText = "$0.00"; document.getElementById("incomePercentage").innerText = "0.00%"; document.getElementById("benchmarkPremium").innerText = formatCurrency(benchmarkPremiumEstimate); document.getElementById("yourContribution").innerText = "$0.00"; document.getElementById("calculationExplanation").innerText = ""; if (window.subsidyChartInstance) { window.subsidyChartInstance.destroy(); } var ctx = document.getElementById('subsidyChart').getContext('2d'); ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height); // Clear canvas } function copyResults() { var subsidy = document.getElementById("estimatedSubsidy").innerText; var incomePercent = document.getElementById("incomePercentage").innerText; var benchmark = document.getElementById("benchmarkPremium").innerText; var contribution = document.getElementById("yourContribution").innerText; var explanation = document.getElementById("calculationExplanation").innerText; var resultsText = "— ACA Subsidy Estimate —\n\n"; resultsText += "Estimated Monthly Subsidy: " + subsidy + "\n"; resultsText += "Your Expected % of Income for Benchmark Plan: " + incomePercent + "\n"; resultsText += "Benchmark Silver Plan Premium: " + benchmark + "\n"; resultsText += "Your Expected Monthly Contribution (to benchmark): " + contribution + "\n\n"; resultsText += "Key Assumptions:\n"; resultsText += " – Calculation based on your input income and family size.\n"; resultsText += " – Benchmark premium estimated at $" + benchmarkPremiumEstimate.toFixed(2) + "/month.\n"; resultsText += " – Uses projected 2026 FPL and subsidy rules.\n\n"; resultsText += "Calculation Formula Explanation:\n" + explanation; try { navigator.clipboard.writeText(resultsText).then(function() { alert('Results copied to clipboard!'); }, function(err) { console.error('Could not copy text: ', err); alert('Failed to copy results. Please copy manually.'); }); } catch (e) { console.error('Clipboard API not available: ', e); alert('Clipboard API not available. Please copy results manually.'); } } function updateChart(subsidy, yourContribution, benchmarkPremium) { var ctx = document.getElementById('subsidyChart').getContext('2d'); // Destroy previous chart instance if it exists if (window.subsidyChartInstance) { window.subsidyChartInstance.destroy(); } // Ensure values are numbers var subsidyNum = parseFloat(subsidy); var yourContributionNum = parseFloat(yourContribution.replace(/[^0-9.-]+/g,"")); // Remove $ var benchmarkPremiumNum = parseFloat(benchmarkPremium); // Calculate the effective premium the user pays for their *selected* plan // This requires knowing the actual selected plan premium, which is an input. // For the chart, let's compare: // 1. Your expected contribution towards benchmark // 2. The actual subsidy amount // 3. The benchmark premium itself // We can visualize how the subsidy bridges the gap. // For simplicity, let's chart: // – Your Contribution to Benchmark // – The Subsidy Amount // – The remaining portion of the Benchmark Premium (that you *would* pay if you chose benchmark) var data = { labels: ['Your Contribution', 'Subsidy Amount', 'Remaining Benchmark Cost'], datasets: [{ label: 'Cost Allocation (Monthly)', data: [ yourContributionNum, subsidyNum, Math.max(0, benchmarkPremiumNum – yourContributionNum – subsidyNum) // This should ideally be 0 if subsidy is calculated correctly against benchmark ], backgroundColor: [ 'rgba(0, 74, 153, 0.7)', // Your Contribution (Primary Color) 'rgba(40, 167, 69, 0.7)', // Subsidy Amount (Success Color) 'rgba(220, 53, 69, 0.7)' // Remaining Benchmark Cost (Danger Color – should be near 0) ], borderColor: [ 'rgba(0, 74, 153, 1)', 'rgba(40, 167, 69, 1)', 'rgba(220, 53, 69, 1)' ], borderWidth: 1 }] }; // Calculate total cost for a stacked bar chart feel var totalChartValue = yourContributionNum + subsidyNum; // This represents the benchmark premium cost covered // Adjust data if needed for clarity. Let's show your contribution, subsidy, and what's left of benchmark. // Or maybe simpler: Your Contribution vs. Subsidy vs. Full Benchmark. // Let's go with: Your Contribution, Subsidy, and Remaining cost to reach benchmark. var chartData = { labels: ['Your Responsibility', 'Government Subsidy', 'Benchmark Remainder'], datasets: [{ label: 'Monthly Cost Allocation', data: [ yourContributionNum, // What you pay towards benchmark subsidyNum, // What government pays Math.max(0, benchmarkPremiumNum – yourContributionNum – subsidyNum) // Remainder (should be 0 if correctly calculated) ], backgroundColor: [ 'rgba(0, 74, 153, 0.6)', // Your Responsibility – Primary 'rgba(40, 167, 69, 0.6)', // Government Subsidy – Success 'rgba(255, 193, 7, 0.6)' // Benchmark Remainder – Warning (Yellow) – should be zero ideally ], hoverOffset: 4 }] }; window.subsidyChartInstance = new Chart(ctx, { type: 'doughnut', // Use Doughnut or Pie chart for allocation visualization data: chartData, options: { responsive: true, maintainAspectRatio: true, // Set to true if you want it to maintain aspect ratio within its container plugins: { legend: { position: 'top', }, title: { display: true, text: 'Monthly Health Premium Allocation (Benchmark Plan)' }, tooltip: { callbacks: { label: function(context) { var label = context.label || ''; if (label) { label += ': '; } if (context.parsed !== null) { label += formatCurrency(context.parsed); } return label; } } } } } }); } // Helper function for FAQ toggling function toggleFaq(element) { var parent = element.parentElement; parent.classList.toggle('open'); } // Initial calculation on load if values are present (e.g., from URL parameters or saved state) // Or just set default benchmark value document.getElementById("benchmarkPremium").innerText = formatCurrency(benchmarkPremiumEstimate); // Attach event listeners to inputs for real-time updates (optional, but good UX) document.getElementById("householdIncome").addEventListener("input", calculateSubsidy); document.getElementById("familySize").addEventListener("input", calculateSubsidy); document.getElementById("premium").addEventListener("input", calculateSubsidy); // Add Chart.js library dynamically if not present function addChartJs() { if (typeof Chart === 'undefined') { var script = document.createElement('script'); script.src = 'https://cdn.jsdelivr.net/npm/chart.js@3.7.1/dist/chart.min.js'; // Use a specific, reliable version script.onload = function() { console.log("Chart.js loaded."); // Now that Chart.js is loaded, we can potentially trigger an initial chart render if needed // calculateSubsidy(); // Call calculateSubsidy to render chart on load if inputs have defaults }; script.onerror = function() { console.error("Failed to load Chart.js"); }; document.head.appendChild(script); } else { console.log("Chart.js already loaded."); // If Chart.js is already loaded, ensure chart is rendered if inputs are set // calculateSubsidy(); } } // Call addChartJs on page load or when the calculator section becomes visible window.addEventListener('load', addChartJs);

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