Colorado Paycheck Calculator
Year-To-Date & Supplemental Options
Federal Withholding (W-4)
Colorado Withholding (DR 0004)
Local Taxes
Deductions
Estimated Paycheck
What Is the Colorado Paycheck Calculator?
The Colorado Paycheck Calculator is a payroll estimation tool that converts gross wages into estimated net take-home pay. It annualizes eligible wages, applies the tax settings stored in the code, and subtracts calculated taxes and user-entered deductions.
To estimate a Colorado paycheck, enter your pay frequency, wages, tax details, and deductions. The calculator applies federal income tax, Social Security, Medicare, Additional Medicare when triggered, Colorado income tax, the Colorado FAMLI employee premium, and an optional local percentage before showing estimated net pay.
The tool is useful for salaried and hourly employees, including workers with overtime or bonus pay. Its results include gross pay, individual tax amounts, total taxes, total deductions, net take-home pay, and an effective tax rate. The output is a pay-period estimate rather than a tax return or official payroll calculation.
How the Colorado Paycheck Calculator Works
In salary mode, regular gross pay is the amount entered for one pay period. In hourly mode, the calculator values regular hours at the base rate, overtime at 1.5 times the rate, and double-time hours at 2 times the rate.
Here, R is regular gross pay, r is the hourly rate, hr is regular hours, ho is overtime hours, and hd is double-time hours. Any bonus is added to regular gross pay.
Health, FSA, or Section 125 deductions reduce wages used for federal tax, Colorado tax, Social Security, Medicare, and FAMLI. Traditional 401(k) or 403(b) deductions reduce federal and Colorado income-tax wages but remain subject to FICA and FAMLI.
For Colorado tax, f is the number of pay periods, W is eligible pay-period income after applicable pretax deductions, S is the coded standard deduction, A is the DR 0004 annual allowance, and ECO is extra Colorado withholding. The code uses $16,100 for single or head-of-household status and $32,200 for married status.
N is net pay. The tax terms represent federal income tax, Social Security, Medicare, Additional Medicare, Colorado tax, FAMLI, and local tax. The deduction terms represent traditional retirement, health, and post-tax deductions.
Worked Example
Assume $3,000 of biweekly salary pay, single filing status, no bonus, no adjustments, no deductions, no local tax, and $0 year-to-date wages. Annualized pay is $78,000. Federal taxable income is $61,900 after the $16,100 standard deduction. The coded federal brackets produce $322.58 of federal withholding per paycheck.
Social Security is $186.00, Medicare is $43.50, and FAMLI is $13.20. Colorado taxable income is also $61,900 because the DR 0004 allowance is $0. Colorado tax is $2,723.60 annually, or $104.75 per paycheck. Total taxes are $670.03, leaving estimated net pay of $2,329.97. The displayed effective tax rate is 22.3%.
How to Use the Colorado Paycheck Calculator: Step by Step
- Select Salary / Gross Pay or Hourly. Salary mode uses one gross-pay amount, while hourly mode calculates earnings from rates and hours.
- Choose weekly, biweekly, semimonthly, monthly, quarterly, or annual pay frequency. The calculator uses this value to annualize taxable wages.
- Enter gross pay per period. For hourly pay, enter the hourly rate, regular hours, overtime hours, and double-time hours.
- Enter year-to-date gross subject to FICA and FAMLI. This amount helps apply the Social Security, FAMLI, and Additional Medicare limits.
- Add bonus or supplemental pay. Select whether it should be combined with regular wages or taxed separately using the coded flat rates.
- Complete the federal W-4 section. Choose filing status and enter any Step 2, Step 3, Step 4a, Step 4b, or Step 4c information.
- Complete the Colorado DR 0004 section. Choose Colorado filing status, enter an annual allowance, and add extra Colorado withholding if needed.
- Enter any local percentage, traditional retirement contribution, health deduction, and post-tax deduction that applies to the current pay period.
- Check the acknowledgment box, then select Calculate Take-Home Pay. The calculate button remains disabled until the box is checked.
The results show each amount for the selected pay period. Total Taxes combines federal, FICA, Colorado, FAMLI, and optional local taxes. Total Deductions combines all three deduction fields. Net Take-Home Pay is the amount left after both totals are subtracted from gross pay.
Factors That Affect Your Colorado Paycheck Estimate
Pretax and Post-Tax Deductions
The calculator treats each deduction differently. Entering an amount in the wrong field may change several tax lines, not just the final deduction total.
| Input | How the calculator uses it |
|---|---|
| Traditional 401(k) or 403(b) | Reduces federal and Colorado income-tax wages but does not reduce FICA or FAMLI wages. |
| Health, FSA, or Section 125 | Reduces federal, Colorado, Social Security, Medicare, and FAMLI wage amounts. |
| Post-tax deductions | Reduce net pay without reducing calculated taxes. |
| DR 0004 annual allowance | Reduces annualized Colorado taxable income dollar for dollar. |
| Extra withholding | Adds the entered amount to the applicable federal or Colorado tax for each pay period. |
Year-to-Date Wage Limits
The code applies a $184,500 wage base to both Social Security and FAMLI. It uses year-to-date gross to determine how much room remains under that limit. Social Security is 6.2% of eligible current wages. FAMLI is 0.44% of eligible current wages. Both stop when the coded wage base has been reached.
Medicare is 1.45% of eligible wages without the same wage cap. Additional Medicare is 0.9% of the part of the current paycheck that causes year-to-date eligible wages to exceed $200,000.
Bonus and Supplemental Wage Treatment
Combined mode includes the bonus with regular wages before federal and Colorado annualization. Separate mode applies 22% federal withholding and 4.4% Colorado withholding to the bonus. In separate mode, the traditional retirement and health deductions reduce the regular wage portion before the bonus receives its flat-rate treatment.
Local Tax and Input Limits
The local tax field accepts a percentage and applies it to total gross pay. It does not calculate a flat-dollar local occupational tax. A flat amount can instead be included in post-tax deductions when appropriate. Blank, invalid, or negative numerical entries are treated as zero. The calculation stops when total gross pay is not greater than zero.
This calculator uses fixed 2026 values stored in its code. Actual payroll may differ because of employer rounding, taxable benefits, payroll corrections, deduction-plan rules, updated laws, or other items not included in the form. Results are estimates and are not payroll, tax, legal, or accounting advice.
Frequently Asked Questions
How do I calculate my Colorado take-home pay?
Enter your gross wages, pay frequency, federal W-4 information, Colorado DR 0004 details, and payroll deductions. The calculator subtracts estimated federal taxes, FICA, Colorado income tax, FAMLI, optional local tax, and deductions from gross pay. The remaining amount is your estimated take-home pay for that pay period.
Does the Colorado paycheck calculator include FAMLI?
Yes. The calculator applies a 0.44% Colorado FAMLI employee premium to eligible wages. Health, FSA, or Section 125 deductions reduce FAMLI wages, but traditional 401(k) or 403(b) contributions do not. The code caps FAMLI wages at $184,500 after considering the entered year-to-date gross amount.
What Colorado income tax rate does the calculator use?
The calculator uses a flat 4.4% Colorado income tax rate. It applies that rate after subtracting the coded standard deduction, the entered DR 0004 annual allowance, and applicable pretax deductions from annualized wages. Any extra Colorado withholding is then added as a pay-period amount.
How does the calculator handle overtime and double time?
Hourly mode values overtime hours at 1.5 times the entered rate and double-time hours at 2 times the rate. It adds those amounts to regular hourly earnings and bonus pay. The calculator does not determine which hours legally qualify for overtime or double time, so users must classify their hours correctly.
How are bonuses taxed in the Colorado paycheck calculator?
You can combine a bonus with regular wages or select separate treatment. Separate treatment applies 22% federal withholding and 4.4% Colorado withholding to the bonus. Social Security, Medicare, Additional Medicare when applicable, FAMLI, and any local percentage are still calculated using the broader wage rules in the code.
Does a traditional 401(k) reduce FICA and FAMLI taxes?
No. In this calculator, traditional 401(k) and 403(b) contributions reduce wages used for federal and Colorado income-tax calculations. They remain subject to Social Security, Medicare, Additional Medicare, and FAMLI. Health, FSA, or Section 125 deductions reduce both income-tax wages and the wages used for those payroll taxes.
How accurate is this Colorado paycheck estimate?
The estimate reflects the entered values and the fixed 2026 settings in the calculator code. It does not connect to employer payroll records or live tax tables. Actual results may vary because of rounding, taxable benefits, updated rates, flat local charges, special payroll items, or deduction treatment used by an employer.