Co Paycheck Calculator

Colorado Paycheck Calculator

Weekly Bi-weekly Semi-monthly Monthly
Single Married Filing Jointly Head of Household

Estimated Paycheck Breakdown (Per Pay Period)

Gross Pay:

Pre-Tax Deductions:

Taxable Gross:

Federal Income Tax:

Social Security Tax:

Medicare Tax:

Colorado State Tax:

Post-Tax Deductions:

Net Pay:

Understanding Your Colorado Paycheck

Navigating your paycheck can sometimes feel like deciphering a complex code. This Colorado Paycheck Calculator helps you estimate your take-home pay by breaking down gross earnings, various deductions, and taxes specific to Colorado.

Gross Pay

Your gross pay is the total amount of money you earn before any deductions are taken out. This can be calculated based on an annual salary or an hourly rate multiplied by the hours you work. For salaried employees, it's your annual salary divided by the number of pay periods in a year. For hourly workers, it's your hourly rate multiplied by your hours per week, then adjusted for your pay frequency.

Pre-Tax Deductions

These are deductions taken from your gross pay before taxes are calculated. Common pre-tax deductions include contributions to a 401(k) or 403(b) retirement plan, health insurance premiums, and Flexible Spending Account (FSA) contributions. Pre-tax deductions reduce your taxable income, meaning you pay less in federal and state income taxes.

Taxable Gross Pay

This is your gross pay minus any pre-tax deductions. This is the amount on which your federal, state, and FICA taxes are calculated.

Federal Income Tax

Federal income tax is withheld from your paycheck based on the information you provide on your W-4 form, including your filing status (Single, Married Filing Jointly, Head of Household) and the number of dependents you claim. The federal tax system is progressive, meaning higher earners pay a larger percentage of their income in taxes. Our calculator uses a simplified estimation method for federal tax, which may not perfectly match your actual withholding but provides a close approximation.

FICA Taxes (Social Security and Medicare)

FICA stands for the Federal Insurance Contributions Act, which funds Social Security and Medicare. These are mandatory federal taxes:

  • Social Security: As of 2024, the Social Security tax rate is 6.2% of your gross wages, up to an annual wage base limit of $168,600. Once your year-to-date earnings exceed this limit, Social Security tax is no longer withheld for the remainder of the year.
  • Medicare: The Medicare tax rate is 1.45% of all your gross wages, with no wage base limit.

Your employer also pays an equal amount for both Social Security and Medicare taxes on your behalf.

Colorado State Income Tax

Colorado has a flat income tax rate. For 2024, the state income tax rate is 4.40% of your taxable income. This means everyone pays the same percentage, regardless of their income level.

Post-Tax Deductions

These deductions are taken from your pay *after* all taxes have been calculated and withheld. Examples include Roth 401(k) contributions, union dues, garnishments, or certain types of insurance premiums.

Net Pay

Your net pay, or take-home pay, is the amount you receive after all taxes and deductions have been subtracted from your gross pay. This is the money that actually lands in your bank account.

Example Calculation:

Let's consider an individual in Colorado earning an annual salary of $60,000, paid bi-weekly, filing as Single with 0 dependents, with $100 in pre-tax deductions and $20 in post-tax deductions per pay period.

  • Annual Salary: $60,000
  • Pay Frequency: Bi-weekly (26 pay periods)
  • Gross Pay per Period: $60,000 / 26 = $2,307.69
  • Pre-Tax Deductions: $100.00
  • Taxable Gross: $2,307.69 – $100.00 = $2,207.69
  • Federal Income Tax (estimated): Approximately $270.00 – $350.00 (varies based on W-4 and income)
  • Social Security Tax (6.2%): $2,207.69 * 0.062 = $136.88
  • Medicare Tax (1.45%): $2,207.69 * 0.0145 = $32.01
  • Colorado State Tax (4.40%): $2,207.69 * 0.0440 = $97.14
  • Post-Tax Deductions: $20.00
  • Estimated Net Pay: $2,207.69 – $300 (avg fed tax) – $136.88 – $32.01 – $97.14 – $20.00 = Approximately $1,621.66

This calculator provides an estimate. For precise figures, always refer to your official pay stubs and consult with a tax professional.

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Pre-Tax Deductions var taxableGrossPerPeriod = grossPayPerPeriod – preTaxDeductions; if (taxableGrossPerPeriod < 0) { taxableGrossPerPeriod = 0; // Cannot have negative taxable income } // 2. FICA Taxes (Social Security & Medicare) var socialSecurityRate = 0.062; var medicareRate = 0.0145; var socialSecurityWageBaseLimit = 168600; // For 2024 var annualTaxableGrossForFICA = taxableGrossPerPeriod * numberOfPayPeriods; var socialSecurityTax = 0; if (annualTaxableGrossForFICA <= socialSecurityWageBaseLimit) { socialSecurityTax = taxableGrossPerPeriod * socialSecurityRate; } else { // This is a simplification. A full calculator would track YTD earnings. // For a single period, we'll apply it to the portion below the limit if this period pushes it over. // For simplicity in this calculator, we'll assume if annual exceeds, then this period's portion is capped. // This is not perfectly accurate for a single period if the limit is hit mid-year. // For a basic calculator, applying to the full taxable gross for the period is common, // with the understanding that it will stop later in the year. // Let's apply it to the full taxable gross for the period, and note the annual limit. socialSecurityTax = taxableGrossPerPeriod * socialSecurityRate; } var medicareTax = taxableGrossPerPeriod * medicareRate; // 3. Colorado State Income Tax (Flat rate) var coStateTaxRate = 0.0440; // 4.40% for 2024 var coStateTax = taxableGrossPerPeriod * coStateTaxRate; // 4. Federal Income Tax (Simplified Approximation) // This is a simplified estimation and may not perfectly match IRS withholding tables. var annualTaxableGrossForFederal = taxableGrossPerPeriod * numberOfPayPeriods; var federalTaxPerPeriod = 0; // Simplified standard deduction and dependent allowance for approximation var annualStandardDeduction = 0; var dependentAllowancePerDependent = 2000; // Rough annual allowance per dependent if (federalFilingStatus === "Single") { annualStandardDeduction = 14600; // 2024 Single standard deduction } else if (federalFilingStatus === "Married") { annualStandardDeduction = 29200; // 2024 Married Filing Jointly standard deduction } else if (federalFilingStatus === "Head of Household") { annualStandardDeduction = 21900; // 2024 Head of Household standard deduction } var totalDependentAllowance = federalDependents * dependentAllowancePerDependent; var adjustedAnnualTaxable = Math.max(0, annualTaxableGrossForFederal – annualStandardDeduction – totalDependentAllowance); // Very simplified progressive tax brackets (approximate for illustration) var estimatedAnnualFederalTax = 0; if (adjustedAnnualTaxable <= 11600) { // 10% bracket estimatedAnnualFederalTax = adjustedAnnualTaxable * 0.10; } else if (adjustedAnnualTaxable <= 47150) { // 12% bracket estimatedAnnualFederalTax = (11600 * 0.10) + ((adjustedAnnualTaxable – 11600) * 0.12); } else if (adjustedAnnualTaxable <= 100525) { // 22% bracket estimatedAnnualFederalTax = (11600 * 0.10) + (35550 * 0.12) + ((adjustedAnnualTaxable – 47150) * 0.22); } else if (adjustedAnnualTaxable <= 191950) { // 24% bracket estimatedAnnualFederalTax = (11600 * 0.10) + (35550 * 0.12) + (53375 * 0.22) + ((adjustedAnnualTaxable – 100525) * 0.24); } else { // Higher brackets, simplified to a higher flat rate for very high income estimatedAnnualFederalTax = adjustedAnnualTaxable * 0.28; // A higher average rate for simplicity } federalTaxPerPeriod = estimatedAnnualFederalTax / numberOfPayPeriods; if (federalTaxPerPeriod < 0) federalTaxPerPeriod = 0; // 5. Net Pay var totalDeductions = preTaxDeductions + socialSecurityTax + medicareTax + coStateTax + federalTaxPerPeriod + postTaxDeductions; var netPay = grossPayPerPeriod – totalDeductions; // Display Results document.getElementById("grossPayResult").innerText = "$" + grossPayPerPeriod.toFixed(2); document.getElementById("preTaxDeductionsResult").innerText = "$" + preTaxDeductions.toFixed(2); document.getElementById("taxableGrossResult").innerText = "$" + taxableGrossPerPeriod.toFixed(2); document.getElementById("federalTaxResult").innerText = "$" + federalTaxPerPeriod.toFixed(2); document.getElementById("socialSecurityTaxResult").innerText = "$" + socialSecurityTax.toFixed(2); document.getElementById("medicaretaxResult").innerText = "$" + medicareTax.toFixed(2); document.getElementById("stateTaxResult").innerText = "$" + coStateTax.toFixed(2); document.getElementById("postTaxDeductionsResult").innerText = "$" + postTaxDeductions.toFixed(2); document.getElementById("netPayResult").innerText = "$" + netPay.toFixed(2); }

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