Pmi Calculator Fha

FHA PMI Calculator: Estimate Your Monthly Mortgage Insurance :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ddd; –shadow-color: rgba(0, 0, 0, 0.1); –card-background: #fff; } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); line-height: 1.6; margin: 0; padding: 0; display: flex; justify-content: center; padding-top: 20px; padding-bottom: 40px; } .container { max-width: 960px; width: 100%; margin: 0 auto; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: 0 4px 15px var(–shadow-color); } h1, h2, h3 { color: var(–primary-color); text-align: center; margin-bottom: 20px; } h1 { font-size: 2.2em; margin-bottom: 30px; } h2 { font-size: 1.8em; margin-top: 30px; border-bottom: 2px solid var(–primary-color); padding-bottom: 10px; } h3 { font-size: 1.4em; margin-top: 25px; color: var(–primary-color); } .loan-calc-container { background-color: var(–card-background); padding: 25px; border-radius: 8px; box-shadow: 0 2px 10px var(–shadow-color); margin-bottom: 30px; } .input-group { margin-bottom: 20px; text-align: left; } .input-group label { display: block; margin-bottom: 8px; font-weight: bold; color: var(–primary-color); } .input-group input[type="number"], .input-group select { width: calc(100% – 22px); padding: 10px; border: 1px solid var(–border-color); border-radius: 5px; font-size: 1em; box-sizing: border-box; } .input-group input[type="number"]:focus, .input-group select:focus { outline: none; border-color: var(–primary-color); box-shadow: 0 0 0 3px rgba(0, 74, 153, 0.2); } .input-group .helper-text { font-size: 0.85em; color: #666; margin-top: 5px; display: block; } .error-message { color: #dc3545; font-size: 0.85em; margin-top: 5px; display: none; /* Hidden by default */ } .error-message.visible { display: block; } .button-group { display: flex; justify-content: space-between; margin-top: 25px; gap: 10px; } .button-group button { padding: 12px 20px; border: none; border-radius: 5px; cursor: pointer; font-size: 1em; font-weight: bold; transition: background-color 0.3s ease; flex: 1; } .button-group button.reset-button { background-color: #6c757d; color: white; } .button-group button.reset-button:hover { background-color: #5a6268; } .button-group button.copy-button { background-color: var(–primary-color); color: white; } .button-group button.copy-button:hover { background-color: #003366; } #results { margin-top: 30px; padding: 25px; background-color: var(–primary-color); color: white; border-radius: 8px; text-align: center; box-shadow: 0 2px 10px rgba(0, 74, 153, 0.3); } #results h3 { color: white; margin-bottom: 15px; } #results .main-result { font-size: 2.5em; font-weight: bold; margin-bottom: 10px; display: block; } #results .result-label { font-size: 1.1em; color: rgba(255, 255, 255, 0.9); } #results .intermediate-results div { margin-top: 15px; font-size: 1.1em; color: rgba(255, 255, 255, 0.9); } #results .intermediate-results span { font-weight: bold; color: white; } #results .formula-explanation { font-size: 0.9em; margin-top: 20px; padding-top: 15px; border-top: 1px solid rgba(255, 255, 255, 0.3); color: rgba(255, 255, 255, 0.8); } table { width: 100%; border-collapse: collapse; margin-top: 25px; margin-bottom: 30px; box-shadow: 0 2px 10px var(–shadow-color); } thead { background-color: var(–primary-color); color: white; } th, td { padding: 12px 15px; text-align: left; border: 1px solid var(–border-color); } tbody tr:nth-child(even) { background-color: #f2f2f2; } caption { font-size: 1.1em; font-weight: bold; color: var(–primary-color); margin-bottom: 10px; text-align: left; } canvas { display: block; margin: 25px auto; background-color: var(–card-background); border-radius: 5px; box-shadow: 0 2px 10px var(–shadow-color); } .chart-container { text-align: center; margin-top: 30px; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: 0 2px 10px var(–shadow-color); } .chart-container h3 { margin-bottom: 15px; } .legend { margin-top: 15px; font-size: 0.9em; color: #666; } .legend span { display: inline-block; margin: 0 10px; position: relative; padding-left: 15px; } .legend span::before { content: "; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 10px; height: 10px; border-radius: 50%; margin-right: 5px; } .legend .color-upfront::before { background-color: #007bff; } .legend .color-annual::before { background-color: #ffc107; } .article-content { margin-top: 40px; background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: 0 2px 10px var(–shadow-color); } .article-content p, .article-content ul, .article-content ol { margin-bottom: 15px; } .article-content ul, .article-content ol { padding-left: 25px; } .article-content li { margin-bottom: 8px; } .article-content a { color: var(–primary-color); text-decoration: none; } .article-content a:hover { text-decoration: underline; } .faq-section h3 { text-align: left; margin-top: 30px; border-bottom: 1px solid var(–border-color); padding-bottom: 5px; } .faq-section .faq-item { margin-bottom: 20px; } .faq-item strong { display: block; margin-bottom: 5px; color: var(–primary-color); } .related-tools { margin-top: 30px; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: 0 2px 10px var(–shadow-color); } .related-tools h3 { text-align: left; margin-bottom: 15px; } .related-tools ul { list-style: none; padding: 0; } .related-tools li { margin-bottom: 10px; } .related-tools a { font-weight: bold; } .related-tools p { font-size: 0.9em; color: #666; margin-top: 5px; } .highlight { background-color: var(–success-color); color: white; padding: 2px 5px; border-radius: 3px; font-weight: bold; } .text-center { text-align: center; } .text-primary { color: var(–primary-color); } .font-bold { font-weight: bold; } .mb-10 { margin-bottom: 10px; } .mt-20 { margin-top: 20px; } .pb-15 { padding-bottom: 15px; } .pt-15 { padding-top: 15px; }

FHA PMI Calculator

Estimate your FHA Mortgage Insurance Premium (MIP) costs accurately.

FHA MIP Calculation Inputs

Enter the total amount you are borrowing.
Typically 15 or 30 years for FHA loans.
Enter the percentage of the home's value financed (e.g., 96.5 for 3.5% down).
740+ 700-739 680-699 660-679 640-659 620-639 <option value="Below 620 Your credit score impacts MIP rates.

Your Estimated FHA MIP

$0.00
Estimated Annual MIP Cost
Upfront MIP: $0.00
Annual MIP Rate: 0.00%
Estimated Monthly MIP: $0.00
FHA MIP is calculated based on loan amount, LTV, loan term, and credit score, using HUD guidelines.

MIP Cost Over Time

Upfront MIP Annual MIP (Total)
FHA MIP Rate Structure (Illustrative)
Loan Term LTV Credit Score Upfront MIP (%) Annual MIP (%)

What is FHA PMI?

FHA PMI, more accurately termed FHA Mortgage Insurance Premium (MIP), is a mandatory fee charged by the Federal Housing Administration (FHA) on all FHA-insured loans. Unlike conventional Private Mortgage Insurance (PMI), which is typically removed once you reach 20% equity, FHA MIP has two components: an upfront premium and an annual premium. This FHA PMI ensures lenders against losses if a borrower defaults on their loan.

Who should use an FHA PMI calculator? Anyone considering or currently applying for an FHA loan should use an FHA PMI calculator. This includes first-time homebuyers, borrowers with lower credit scores, or those making a smaller down payment (as low as 3.5%). Understanding these costs is crucial for budgeting and comparing loan options.

Common misconceptions about FHA PMI: A frequent misunderstanding is that FHA PMI is the same as conventional PMI and can be removed easily. However, FHA MIP often lasts for the life of the loan, especially for loans with less than 10% down payment. Another misconception is that FHA loans are only for low-income borrowers; they are designed to make homeownership accessible to a broader range of individuals. Using this FHA PMI calculator helps clarify these costs.

FHA PMI Formula and Mathematical Explanation

Calculating FHA MIP involves determining both the upfront and annual premiums based on specific FHA guidelines. The exact rates can vary slightly based on the loan amount, LTV, loan term, and borrower's credit score. This FHA PMI calculator simplifies this process.

Upfront MIP Calculation: The upfront MIP is a percentage of the loan amount. For most FHA loans originated after June 3, 2013, with a 30-year term and LTV of 95% or higher, the upfront MIP is typically 1.75%. For loans with less than 30-year terms or lower LTVs, the rate might differ.

Annual MIP Calculation: The annual MIP is paid monthly and is also a percentage of the loan amount. The rate depends heavily on the LTV and loan term. For example, loans with LTVs over 95% and terms of 15 years or more often have an annual MIP rate of 0.55%. Loans with lower LTVs or shorter terms might have different rates.

Formula Used in this FHA PMI Calculator:
Upfront MIP = Loan Amount * Upfront MIP Rate (%)
Annual MIP = Loan Amount * Annual MIP Rate (%)
Monthly MIP = Annual MIP / 12
The rates used are based on current FHA guidelines, adjusted for LTV and credit score tiers as reflected in the calculator's logic and the illustrative table.

Variables Table

Variable Meaning Unit Typical Range
Loan Amount The total principal borrowed for the home purchase. USD ($) $50,000 – $1,000,000+
Loan Term The duration of the mortgage loan. Years 15, 30
LTV Ratio Ratio of loan amount to the appraised value or purchase price of the home. % 3.5% – 96.5% (for FHA minimum down payment)
Credit Score A numerical representation of a borrower's creditworthiness. Score 300 – 850 (FHA minimum typically 580 with 3.5% down, 500-579 with 10% down)
Upfront MIP Rate The percentage charged once at the beginning of the loan. % 1.75% (common)
Annual MIP Rate The percentage charged annually, paid monthly. % 0.55% – 0.85% (common, varies by LTV/term)

Practical Examples (Real-World Use Cases)

Let's illustrate how this FHA PMI calculator works with practical scenarios.

Example 1: First-Time Homebuyer with Minimum Down Payment

Sarah is buying her first home and qualifies for an FHA loan. She's putting down 3.5%, making her LTV 96.5%. Her loan amount is $200,000, and she chooses a standard 30-year term. Her credit score is 680.

  • Inputs: Loan Amount: $200,000, Loan Term: 30 years, LTV: 96.5%, Credit Score: 680
  • Calculator Output:
    • Upfront MIP: $3,500 (1.75% of $200,000)
    • Annual MIP Rate: 0.55% (typical for LTV > 95%, 30-yr term)
    • Estimated Annual MIP Cost: $1,100 ($200,000 * 0.55%)
    • Estimated Monthly MIP: $91.67 ($1,100 / 12)
  • Financial Interpretation: Sarah needs to have $3,500 available at closing for the upfront MIP. Her monthly mortgage payment will include an additional $91.67 for the annual MIP. This FHA PMI cost is a significant factor in her total housing expense.

Example 2: Borrower with Higher Down Payment and Credit Score

John is refinancing his home with an FHA loan. The new loan amount is $300,000, with a 15-year term. He's putting down 10%, making his LTV 90%. His credit score is 740.

  • Inputs: Loan Amount: $300,000, Loan Term: 15 years, LTV: 90%, Credit Score: 740
  • Calculator Output:
    • Upfront MIP: $5,250 (1.75% of $300,000 – Note: Upfront MIP is often standard regardless of LTV for new FHA loans, but check specific FHA guidelines)
    • Annual MIP Rate: 0.45% (typical for LTV <= 90%, 15-yr term)
    • Estimated Annual MIP Cost: $1,350 ($300,000 * 0.45%)
    • Estimated Monthly MIP: $112.50 ($1,350 / 12)
  • Financial Interpretation: John's upfront MIP is $5,250. His monthly MIP is $112.50. While his annual MIP rate is lower due to the higher down payment and shorter term, the total annual cost is slightly higher than Sarah's due to the larger loan amount. This FHA PMI calculator highlights these differences.

How to Use This FHA PMI Calculator

Using our FHA PMI calculator is straightforward and designed to provide quick, accurate estimates.

  1. Enter Loan Amount: Input the total amount you intend to borrow for your FHA-insured mortgage.
  2. Specify Loan Term: Select the duration of your loan, typically 15 or 30 years.
  3. Input LTV Ratio: Enter the Loan-to-Value ratio as a percentage. This is calculated as (Loan Amount / Home Value) * 100. For example, if you borrow $96,500 on a $100,000 home, your LTV is 96.5%.
  4. Select Credit Score: Choose the credit score range that best represents your creditworthiness. This significantly influences the annual MIP rate.
  5. View Results: Once you've entered the details, the calculator will instantly display:
    • Upfront MIP: The one-time fee paid at closing.
    • Annual MIP Rate: The percentage used to calculate your yearly MIP cost.
    • Estimated Annual MIP Cost: The total MIP cost for one year.
    • Estimated Monthly MIP: The portion of the annual MIP that will be added to your monthly mortgage payment.
  6. Interpret the Data: Understand that the upfront MIP is a closing cost, while the monthly MIP increases your total monthly housing payment. The calculator also provides a visual chart showing how MIP costs accrue over time and a table detailing FHA MIP rate structures.
  7. Use the Buttons:
    • Reset: Click this to clear all fields and start over with default values.
    • Copy Results: Click this to copy the main result and key assumptions to your clipboard for easy sharing or documentation.

This FHA PMI calculator is a powerful tool for financial planning, helping you budget effectively for an FHA-backed home loan. Remember, these are estimates; your final MIP may vary based on lender verification and FHA underwriting. For precise figures, consult your loan officer.

Key Factors That Affect FHA PMI Results

Several critical factors influence the FHA MIP you'll pay. Understanding these helps in financial planning and potentially optimizing your FHA loan costs.

  • Loan-to-Value (LTV) Ratio: This is arguably the most significant factor. FHA loans allow for low down payments (as low as 3.5%), resulting in high LTV ratios. Higher LTVs generally correspond to higher annual MIP rates, as the lender assumes more risk. This FHA PMI calculator directly incorporates LTV.
  • Credit Score: While FHA loans are more accessible to borrowers with lower credit scores than conventional loans, your score still matters. Higher credit scores (e.g., 700+) typically qualify for lower annual MIP rates compared to scores closer to the FHA minimums.
  • Loan Term: The length of your mortgage impacts the annual MIP rate. Generally, longer loan terms (like 30 years) often carry slightly higher annual MIP rates than shorter terms (like 15 years), especially when LTV is high.
  • Loan Amount: While the MIP *rates* are percentages, the total dollar amount of MIP paid is directly proportional to the loan amount. A larger loan will naturally result in higher upfront and annual MIP costs, even with the same rates.
  • FHA Program Changes: The FHA periodically updates its MIP structure and rates. While this calculator uses current standard rates, future policy changes could affect calculations. Staying informed about FHA guidelines is important.
  • Property Type and Occupancy: While less common for standard calculations, certain FHA loan products or specific property types might have slightly different MIP structures. The calculator assumes a standard primary residence purchase.
  • Mortgage Insurance Premium (MIP) Structure: The FHA has both an upfront MIP (paid once) and an annual MIP (paid monthly). The calculator breaks down both, showing how they contribute to the overall cost of the FHA loan.

Frequently Asked Questions (FAQ)

Q1: How long do I have to pay FHA MIP?

For FHA loans originated after June 3, 2013, if your initial LTV was less than 90%, you will pay annual MIP for the entire life of the loan. If your initial LTV was 90% or greater, you will pay annual MIP for 11 years. This FHA PMI calculator assumes standard scenarios.

Q2: Can I remove FHA MIP early?

Generally, no. Unlike conventional PMI, FHA MIP cannot be removed simply by reaching a certain equity level (like 20%). You must either refinance into a conventional loan or meet the specific FHA criteria for MIP termination (11 years for LTV >= 90%, or life of loan for LTV < 90%).

Q3: Is the upfront MIP financed into the loan?

Yes, the upfront FHA MIP is typically financed into the total loan amount. This means you borrow the purchase price plus the upfront MIP, and your LTV calculation is based on this higher amount. This calculator reflects this by using the entered loan amount for upfront MIP calculation.

Q4: What happens if my credit score is below 620?

While FHA loans can accommodate lower credit scores, scores below 620 often require a larger down payment (typically 10%) and may result in higher annual MIP rates compared to borrowers with scores of 620 or above. Some lenders might have overlays requiring higher scores.

Q5: Does the FHA PMI calculator account for lender fees?

No, this FHA PMI calculator specifically focuses on the FHA-mandated Mortgage Insurance Premium (MIP). It does not include lender origination fees, discount points, appraisal fees, or other closing costs associated with obtaining a mortgage.

Q6: How does the LTV affect the annual MIP rate?

The FHA sets different annual MIP rates based on the LTV and loan term. Higher LTVs (meaning lower down payments) generally result in higher annual MIP rates because the risk to the FHA insurance fund is greater. This calculator uses these tiered rates.

Q7: Is FHA MIP tax-deductible?

In the past, FHA MIP was tax-deductible, similar to conventional PMI. However, this deduction expired at the end of 2017. Currently, FHA MIP is generally not tax-deductible. Always consult a tax professional for personalized advice.

Q8: What is the difference between FHA MIP and conventional PMI?

The primary differences are: FHA MIP is required on all FHA loans, has both upfront and annual components, and often lasts for the life of the loan or 11 years. Conventional PMI is required for down payments under 20% on conventional loans, has no upfront fee, and can typically be canceled once equity reaches 20%.

Disclaimer: This FHA PMI calculator provides estimates for informational purposes only. Rates and guidelines are subject to change. Consult with a qualified mortgage professional for accurate loan terms and advice.

var loanAmountInput = document.getElementById('loanAmount'); var loanTermInput = document.getElementById('loanTerm'); var ltvInput = document.getElementById('ltv'); var creditScoreInput = document.getElementById('creditScore'); var mainResultDisplay = document.getElementById('mainResult'); var upfrontMIPDisplay = document.getElementById('upfrontMIP').querySelector('span'); var annualMIPRateDisplay = document.getElementById('annualMIPRate').querySelector('span'); var monthlyMIPDisplay = document.getElementById('monthlyMIP').querySelector('span'); var loanAmountError = document.getElementById('loanAmountError'); var loanTermError = document.getElementById('loanTermError'); var ltvError = document.getElementById('ltvError'); var creditScoreError = document.getElementById('creditScoreError'); var mipChartCanvas = document.getElementById('mipChart'); var mipChartInstance = null; var mipRateTableBody = document.getElementById('mipRateTableBody'); // FHA MIP Rate Structure (simplified for calculator logic) // Structure: { minCreditScore: { minLTV: { term: { upfrontRate, annualRate } } } } // Note: FHA rates are complex and depend on specific HUD guidelines. This is a simplified model. var fhaMIPRates = { 740: { // 740+ 95: { // 95% LTV 30: { upfrontRate: 1.75, annualRate: 0.55 }, // 30-year term 15: { upfrontRate: 1.75, annualRate: 0.45 } // 15-year term }, 90: { // 90% LTV 30: { upfrontRate: 1.75, annualRate: 0.50 }, 15: { upfrontRate: 1.75, annualRate: 0.45 } }, default: { // Default for LTV < 90% or other terms 30: { upfrontRate: 1.75, annualRate: 0.55 }, 15: { upfrontRate: 1.75, annualRate: 0.45 } } }, 700: { // 700-739 95: { 30: { upfrontRate: 1.75, annualRate: 0.55 }, 15: { upfrontRate: 1.75, annualRate: 0.45 } }, 90: { 30: { upfrontRate: 1.75, annualRate: 0.50 }, 15: { upfrontRate: 1.75, annualRate: 0.45 } }, default: { 30: { upfrontRate: 1.75, annualRate: 0.55 }, 15: { upfrontRate: 1.75, annualRate: 0.45 } } }, 680: { // 680-699 95: { 30: { upfrontRate: 1.75, annualRate: 0.60 }, 15: { upfrontRate: 1.75, annualRate: 0.50 } }, 90: { 30: { upfrontRate: 1.75, annualRate: 0.55 }, 15: { upfrontRate: 1.75, annualRate: 0.45 } }, default: { 30: { upfrontRate: 1.75, annualRate: 0.60 }, 15: { upfrontRate: 1.75, annualRate: 0.50 } } }, 660: { // 660-679 95: { 30: { upfrontRate: 1.75, annualRate: 0.65 }, 15: { upfrontRate: 1.75, annualRate: 0.55 } }, 90: { 30: { upfrontRate: 1.75, annualRate: 0.60 }, 15: { upfrontRate: 1.75, annualRate: 0.50 } }, default: { 30: { upfrontRate: 1.75, annualRate: 0.65 }, 15: { upfrontRate: 1.75, annualRate: 0.55 } } }, 640: { // 640-659 95: { 30: { upfrontRate: 1.75, annualRate: 0.70 }, 15: { upfrontRate: 1.75, annualRate: 0.60 } }, 90: { 30: { upfrontRate: 1.75, annualRate: 0.65 }, 15: { upfrontRate: 1.75, annualRate: 0.55 } }, default: { 30: { upfrontRate: 1.75, annualRate: 0.70 }, 15: { upfrontRate: 1.75, annualRate: 0.60 } } }, 620: { // 620-639 95: { 30: { upfrontRate: 1.75, annualRate: 0.75 }, 15: { upfrontRate: 1.75, annualRate: 0.65 } }, 90: { 30: { upfrontRate: 1.75, annualRate: 0.70 }, 15: { upfrontRate: 1.75, annualRate: 0.60 } }, default: { 30: { upfrontRate: 1.75, annualRate: 0.75 }, 15: { upfrontRate: 1.75, annualRate: 0.65 } } }, '<620': { // Below 620 (requires 10% down, LTV 90%) 90: { // Only 90% LTV is typically allowed 30: { upfrontRate: 1.75, annualRate: 0.80 }, // Higher rate for lower score/higher down 15: { upfrontRate: 1.75, annualRate: 0.70 } }, default: { // Fallback, though 90% LTV is standard 30: { upfrontRate: 1.75, annualRate: 0.80 }, 15: { upfrontRate: 1.75, annualRate: 0.70 } } } }; // Populate the illustrative table function populateMIPRateTable() { var html = ''; var terms = [15, 30]; var ltvs = [95, 90]; // Representative LTVs var creditScores = ['740+', '700-739', '680-699', '660-679', '640-659', '620-639', '<620']; creditScores.forEach(function(csLabel) { var csKey = csLabel.split('-')[0].replace('+','').replace('<',''); if (csKey === '') csKey = '<620'; // Handle '<620' case terms.forEach(function(term) { ltvs.forEach(function(ltv) { var rateData = getMIPRates(parseInt(csKey) || csKey, ltv, term); if (rateData) { html += ''; html += '' + term + ' years'; html += '' + ltv + '%'; html += '' + csLabel + ''; html += '' + (rateData.upfrontRate).toFixed(2) + '%'; html += '' + (rateData.annualRate).toFixed(2) + '%'; html += ''; } }); }); }); // Add a row for the default case (e.g., LTV < 90% for higher scores) var defaultRateData = getMIPRates(740, 85, 30); // Example: 85% LTV, 30yr term if (defaultRateData) { html += ''; html += '30 years'; html += '<90%'; html += '740+'; html += '' + (defaultRateData.upfrontRate).toFixed(2) + '%'; html += '' + (defaultRateData.annualRate).toFixed(2) + '%'; html += ''; } mipRateTableBody.innerHTML = html; } function getMIPRates(creditScore, ltv, loanTerm) { var effectiveCreditScoreKey; if (typeof creditScore === 'number') { if (creditScore >= 740) effectiveCreditScoreKey = 740; else if (creditScore >= 700) effectiveCreditScoreKey = 700; else if (creditScore >= 680) effectiveCreditScoreKey = 680; else if (creditScore >= 660) effectiveCreditScoreKey = 660; else if (creditScore >= 640) effectiveCreditScoreKey = 640; else if (creditScore >= 620) effectiveCreditScoreKey = 620; else effectiveCreditScoreKey = '<620'; } else { effectiveCreditScoreKey = creditScore; // Handles '= 15 ? 15 : 30; // Simplified: use 15 for =15 if (loanTerm >= 15) termKey = 15; if (loanTerm >= 30) termKey = 30; // Prioritize 30 if term is 30 or more var ltvKey = ltv; if (ltv >= 95) ltvKey = 95; else if (ltv >= 90) ltvKey = 90; else ltvKey = 'default'; // For LTV < 90% var rates = fhaMIPRates[effectiveCreditScoreKey]; if (!rates) return null; var ltvRates = rates[ltvKey]; if (!ltvRates) { // Fallback to default LTV if specific LTV not found for the score ltvRates = rates['default']; if (!ltvRates) return null; } var termRates = ltvRates[termKey]; if (!termRates) { // Fallback to default term if specific term not found termRates = ltvRates[30]; // Default to 30 year if term specific not found if (!termRates) return null; } return termRates; } function validateInput(inputElement, errorElement, minValue, maxValue, isEmptyAllowed) { var value = inputElement.value.trim(); var errorMsg = ''; inputElement.classList.remove('error'); errorElement.classList.remove('visible'); errorElement.textContent = ''; if (value === '' && !isEmptyAllowed) { errorMsg = 'This field is required.'; } else if (value !== '') { var numValue = parseFloat(value); if (isNaN(numValue)) { errorMsg = 'Please enter a valid number.'; } else if (numValue maxValue) { errorMsg = 'Value cannot exceed ' + maxValue + '.'; } } if (errorMsg) { inputElement.classList.add('error'); errorElement.textContent = errorMsg; errorElement.classList.add('visible'); return false; } return true; } function calculateMIP() { var loanAmount = parseFloat(loanAmountInput.value); var loanTerm = parseInt(loanTermInput.value); var ltv = parseFloat(ltvInput.value); var creditScore = creditScoreInput.value; var isValid = true; isValid &= validateInput(loanAmountInput, loanAmountError, 1, undefined); isValid &= validateInput(loanTermInput, loanTermError, 1, undefined); isValid &= validateInput(ltvInput, ltvError, 0.01, 100); // Credit score validation is handled by select, no explicit error needed unless logic changes if (!isValid) { resetResults(); return; } var rateData = getMIPRates(creditScore, ltv, loanTerm); if (!rateData) { // Handle cases where no specific rate is found (e.g., unusual inputs) // For simplicity, we'll use a default or show an error. // Let's assume a default high rate if no specific match. rateData = { upfrontRate: 1.75, annualRate: 0.85 }; // Example fallback console.warn("Could not find specific FHA MIP rate. Using fallback."); } var upfrontMIPRate = rateData.upfrontRate; var annualMIPRate = rateData.annualRate; var upfrontMIP = loanAmount * (upfrontMIPRate / 100); var annualMIP = loanAmount * (annualMIPRate / 100); var monthlyMIP = annualMIP / 12; mainResultDisplay.textContent = '$' + annualMIP.toFixed(2); upfrontMIPDisplay.textContent = '$' + upfrontMIP.toFixed(2); annualMIPRateDisplay.textContent = annualMIPRate.toFixed(2) + '%'; monthlyMIPDisplay.textContent = '$' + monthlyMIP.toFixed(2); updateChart(loanAmount, upfrontMIP, annualMIP); } function resetResults() { mainResultDisplay.textContent = '$0.00'; upfrontMIPDisplay.textContent = '$0.00'; annualMIPRateDisplay.textContent = '0.00%'; monthlyMIPDisplay.textContent = '$0.00'; if (mipChartInstance) { mipChartInstance.destroy(); mipChartInstance = null; } // Clear canvas if no chart instance var ctx = mipChartCanvas.getContext('2d'); ctx.clearRect(0, 0, mipChartCanvas.width, mipChartCanvas.height); } function resetCalculator() { loanAmountInput.value = "; loanTermInput.value = '30'; ltvInput.value = "; creditScoreInput.value = '740'; // Default to highest tier // Clear errors loanAmountError.classList.remove('visible'); loanTermError.classList.remove('visible'); ltvError.classList.remove('visible'); creditScoreError.classList.remove('visible'); resetResults(); // Optionally re-run calculation with defaults if desired, or just reset // calculateMIP(); } function copyResults() { var loanAmount = loanAmountInput.value.trim(); var loanTerm = loanTermInput.value.trim(); var ltv = ltvInput.value.trim(); var creditScore = creditScoreInput.options[creditScoreInput.selectedIndex].text; var annualMIP = mainResultDisplay.textContent; var upfrontMIP = upfrontMIPDisplay.textContent; var annualMIPRate = annualMIPRateDisplay.textContent; var monthlyMIP = monthlyMIPDisplay.textContent; var assumptions = "Assumptions:\n"; if (loanAmount) assumptions += "- Loan Amount: $" + parseFloat(loanAmount).toLocaleString() + "\n"; if (loanTerm) assumptions += "- Loan Term: " + loanTerm + " years\n"; if (ltv) assumptions += "- LTV Ratio: " + ltv + "%\n"; assumptions += "- Credit Score: " + creditScore + "\n"; var resultText = "— FHA MIP Calculation Results —\n\n"; resultText += "Estimated Annual MIP Cost: " + annualMIP + "\n"; resultText += "Estimated Upfront MIP: " + upfrontMIP + "\n"; resultText += "Estimated Annual MIP Rate: " + annualMIPRate + "\n"; resultText += "Estimated Monthly MIP: " + monthlyMIP + "\n\n"; resultText += assumptions; navigator.clipboard.writeText(resultText).then(function() { // Optional: Show a confirmation message var originalText = document.querySelector('.copy-button').textContent; document.querySelector('.copy-button').textContent = 'Copied!'; setTimeout(function() { document.querySelector('.copy-button').textContent = originalText; }, 2000); }).catch(function(err) { console.error('Failed to copy results: ', err); // Optional: Show an error message }); } function updateChart(loanAmount, upfrontMIP, annualMIP) { if (mipChartInstance) { mipChartInstance.destroy(); } var ctx = mipChartCanvas.getContext('2d'); // Clear previous chart drawing ctx.clearRect(0, 0, mipChartCanvas.width, mipChartCanvas.height); var years = []; var upfrontMIPData = []; var annualMIPTotalData = []; var currentLoanAmount = loanAmount; var currentAnnualMIP = currentLoanAmount * (parseFloat(annualMIPRateDisplay.textContent) / 100); var currentUpfrontMIP = parseFloat(upfrontMIPDisplay.textContent.replace(/[^0-9.-]+/g,"")); // Determine loan duration for chart based on input or default var chartDuration = parseInt(loanTermInput.value) || 30; if (chartDuration > 35) chartDuration = 35; // Cap chart duration for clarity for (var i = 0; i <= chartDuration; i++) { years.push(i); // Upfront MIP is a one-time cost, so it's only added at year 0 if (i === 0) { upfrontMIPData.push(currentUpfrontMIP); } else { upfrontMIPData.push(0); // No upfront MIP in subsequent years } // Annual MIP accumulates over the years annualMIPTotalData.push(currentAnnualMIP * i); } mipChartInstance = new Chart(ctx, { type: 'bar', // Use bar chart for distinct upfront cost and line for cumulative annual data: { labels: years, datasets: [{ label: 'Upfront MIP Cost', data: upfrontMIPData, backgroundColor: 'rgba(0, 123, 255, 0.6)', // Blue for upfront borderColor: 'rgba(0, 123, 255, 1)', borderWidth: 1, type: 'line', // Display upfront as a line marker at year 0 fill: false, pointRadius: 5, pointHoverRadius: 7 }, { label: 'Total Annual MIP Paid', data: annualMIPTotalData, backgroundColor: 'rgba(255, 193, 7, 0.6)', // Yellow for annual borderColor: 'rgba(255, 193, 7, 1)', borderWidth: 2, type: 'line', // Line chart for cumulative annual MIP fill: false, pointRadius: 5, pointHoverRadius: 7 }] }, options: { responsive: true, maintainAspectRatio: true, scales: { x: { title: { display: true, text: 'Year' } }, y: { title: { display: true, text: 'Cost ($)' }, beginAtZero: true } }, plugins: { tooltip: { callbacks: { label: function(context) { var label = context.dataset.label || ''; if (label) { label += ': '; } if (context.parsed.y !== null) { label += new Intl.NumberFormat('en-US', { style: 'currency', currency: 'USD' }).format(context.parsed.y); } return label; } } }, legend: { display: false // Legend is shown separately } } } }); } // Initial setup and event listeners function initializeCalculator() { loanAmountInput.addEventListener('input', calculateMIP); loanTermInput.addEventListener('input', calculateMIP); ltvInput.addEventListener('input', calculateMIP); creditScoreInput.addEventListener('change', calculateMIP); // Set initial values and calculate loanAmountInput.value = '250000'; // Example default loanTermInput.value = '30'; ltvInput.value = '96.5'; // Example default for FHA creditScoreInput.value = '740'; // Example default populateMIPRateTable(); // Populate the table on load calculateMIP(); // Perform initial calculation } // Load Chart.js library dynamically if not present if (typeof Chart === 'undefined') { var script = document.createElement('script'); script.src = 'https://cdn.jsdelivr.net/npm/chart.js@3.7.0/dist/chart.min.js'; script.onload = function() { initializeCalculator(); }; document.head.appendChild(script); } else { // Chart.js is already loaded initializeCalculator(); }

Leave a Comment