RSU & Stock Vesting Tax Calculators Colorado

Colorado RSU Vesting Tax Calculator

For 100 shares vesting at $50 after $100,000 in earlier wages, the calculator estimates $1,703 withheld, including $220 for Colorado. The state input is an editable 4.4% approximation.

By StateCalc Team

Updated Nov 4, 2026 Checked Jul 30, 2026 · 1 source

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Shares Vesting

01000000

Stock Price at Vest ($/share)

$0$100,000

Colorado Supplemental Tax Rate (%)

015%

Pre-filled: State DOR (regular method — estimate)

Year-to-Date Wages (Before This Vest)

$0$10,000,000

Net Value After Tax

$3,298.00

Estimated • Based on your inputs

Total Tax Withheld

$1,703.00

Detailed Breakdown

Gross Vest Value$5,000.00

Effective Withholding Rate34.05%

Federal Withholding (22%/37%)$1,100.00

Colorado Withholding$220.00

Social Security (6.2%)$310.00

Medicare (1.45%)$73.00

Additional Medicare Tax (0.9%)$0.00

Shares Sold to Cover Taxes35

Shares You Keep65

Disclaimer: This calculator provides estimates for informational purposes only. Results should not be considered financial, tax, or legal advice. Consult a qualified professional for your specific situation.

Colorado Quick Facts

4.4% Income Tax Rate

0.50% Property Tax Rate

$97,113 Median Income

102.7 Cost of Living

How This Calculator Works

Calculation methodology and assumptions

Colorado's withholding worksheet uses the employee's withholding certificate. The state's requirements depend on residence and where a nonresident performs services. The calculator's single percentage cannot reproduce an employer's worksheet; replace the prefill with the rate implied by your own payroll estimate.

Colorado withholding requirements and employer worksheet

Key State Information

At 200 shares worth $100 each, with $190,000 of earlier wages, the same model estimates $5,660 withheld and 143 shares left after sell-to-cover. This is an estimate of withholding, not a Colorado income-tax return.

Standard financial formulas Pre-filled with documented data Estimates only — not financial advice

Data Source

IRS Publication 525 & Publication 15 (2026); state Department of Revenue

View Original Source | Source record reviewed Jul 30, 2026 | Review target: annually

StateCalc Team

Editorial Team

The StateCalc team builds financial calculators using data from official government sources including the IRS, U.S. Census Bureau, BLS, and state revenue departments. All formulas are validated by an automated test suite and cross-referenced against published data.

Our editorial standards

Frequently Asked Questions

Which certificate affects Colorado withholding?

Colorado says the calculation uses the employee withholding certificate, either federal Form W-4 or Colorado Form DR 0004. The calculator does not ask for the certificate details.

What if I live or work outside Colorado?

Residence and where services were performed matter under the state requirements. A single state rate cannot allocate compensation between jurisdictions.