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Colorado Bonus Paycheck Calculator

A bonus paid in Colorado is withheld at the flat 22% federal supplemental rate in 2026 (37% on amounts above $1 million), plus FICA of 7.65% and a flat 4.4% Colorado income tax, with 0.44% CO FAMLI on top. That is roughly 34.5% withheld up front: withholding, not your final tax bill.

How are bonuses taxed in Colorado?

In Colorado, bonus withholding is typically 22% federal (the supplemental rate) plus 4.4% Colorado income tax plus 7.65% FICA plus 0.44% CO FAMLI: about 34.5% up front. Withholding isn't your final tax: at filing time a bonus is ordinary income, so any over-withholding comes back as a refund. Against the 6 states Colorado borders, the same a $10,000 bonus is worth $6,551 here: Wyoming keeps $484 more ($7,035), Oklahoma keeps $34 more ($6,585), Utah keeps $34 more ($6,585), Nebraska keeps $29 more ($6,580), New Mexico keeps $9 more ($6,560) and Kansas leaves $74 less ($6,477). Nebraska, New Mexico, Oklahoma, Utah and Wyoming are the only borders worth crossing for the tax alone.

Calculate your exact bonus take-home pay

Your bonus take-home

$3,276

from $5,000 bonusFor a $5,000 bonus · Colorado · single

Take-home 66%Taxes 34%
Bonus amount$5,000
Federal tax−$1,100
State tax−$220
CO FAMLI−$22
Social Security−$310
Medicare−$73
Net bonus$3,276

Estimate based on 2026 federal and Colorado tax rules updated Oct 2026 How we calculate

Your details

Taxation method

Most common: a flat 22% federal rate is withheld on the bonus.

More options Base salary

What a bonus is actually worth in Colorado

On top of a $75,000 salary in Colorado, here is what each extra dollar survives federal tax, Colorado income tax, FICA and CO FAMLI in 2026:

BonusGrossColorado taxYou keepShare kept
$5,000 bonus$5,000$220$3,27665.5%
$10,000 bonus$10,000$440$6,55165.5%
$25,000 bonus$25,000$1,100$16,37765.5%

Colorado takes about 4.4% of that money on top of the 22% federal marginal rate and 7.65% FICA, and CO FAMLI takes another 0.44%.

How Colorado ranks on bonuses

Across all 50 states and DC, Colorado ranks 30th for what a $10,000 bonus leaves in 2026. That is $14 less than the median state ($6,565), and $534 more than California, where the same a $10,000 bonus leaves $6,017.

The best outcome anywhere is $7,035 in Alaska and the other states with no wage income tax, $484 more than Colorado keeps.

Colorado bonuses against the states next door

Crossing a state line changes what the same bonus is worth without changing what you are paid. Here is a $10,000 bonus in Colorado against the states it borders:

StateState income taxYou keepvs Colorado
Colorado$440$6,551—
Kansas$558$6,477$74 less
Nebraska$455$6,580$29 more
New Mexico$475$6,560$9 more
Oklahoma$450$6,585$34 more
Utah$450$6,585$34 more
WyomingNone$7,035$484 more

How Colorado bonus withholding works

Short answer: your employer withholds a flat 22% for federal income tax (the supplemental rate), plus 7.65% for Social Security and Medicare, plus Colorado's flat 4.4% income tax and 0.44% CO FAMLI: about 34.5% of a Colorado bonus withheld up front. Bonuses aren't actually taxed at a higher rate, though: at tax time they're ordinary income, and any over-withholding comes back in your refund. Here's how each piece works.

  • Federal supplemental rate: Most employers withhold federal income tax from bonuses at a flat 22%, $2,200 on a $10,000 bonus, or 37% above $1 million a year, regardless of your regular bracket.
  • Colorado flat tax: Colorado taxes bonuses like all other wages at its flat 4.4% rate: there's no separate state bonus rate. The bonus also pays 0.44% CO FAMLI, as any wage does. Local income taxes in some Colorado cities or counties are not included.
  • FICA taxes still apply: Social Security (6.2% up to the annual wage base) and Medicare (1.45%, plus 0.9% for high earners) come out of a bonus like any wage: $765 on $10,000.
  • Over-withholding is common: The flat 22% federal rate is often higher than your actual effective rate, and the difference comes back as a refund. In Colorado the whole $10,000 nets $6,551 once state tax, FICA and CO FAMLI are in.

Your actual bonus tax depends on your total annual income, not the bonus alone: these figures assume a $75,000 Colorado salary. Enter your own numbers above for an estimate that fits your situation.

Frequently Asked Questions

Typically about 34.5%: a flat 22% federal supplemental withholding, 4.4% Colorado income tax, 7.65% FICA, and 0.44% CO FAMLI. Your actual tax owed depends on your full-year income and may be lower: the difference comes back as a refund when you file.

The IRS requires employers to withhold federal income tax from supplemental wages (including bonuses) at a flat 22% rate for amounts up to $1 million, rising to 37% above that. Your employer may alternatively add the bonus to your regular paycheck and withhold using the aggregate method. Worked through for Colorado: a $10,000 bonus keeps $6,551: 65.5% of it, after $440 of Colorado income tax and $44 of CO FAMLI.

It depends on your total annual income and tax bracket. If the 22% flat withholding rate is higher than your actual effective rate on the bonus, you'll get the difference back as a refund; if you're in a higher bracket, you may owe more. On a $75,000 salary in Colorado, a bonus is taxed at about 22% federally plus 4.4% to Colorado, so the 22% flat rate is close to the mark at that income.

Yes: as regular income. Colorado taxes all wage income, including bonuses, at its flat 4.4% rate; there is no separate state bonus rate. Local income taxes in some Colorado cities or counties are not included.

Splitting a bonus across pay periods can reduce withholding if your employer uses the aggregate method, which annualizes your income, but it changes the timing, not the amount you ultimately owe. Where you live changes the amount: Colorado ranks 30 of 51 on what a $10,000 bonus leaves, against $6,565 in the median state and $6,017 in California.

Against the 6 states Colorado borders, the same a $10,000 bonus is worth $6,551 here: Wyoming keeps $484 more ($7,035), Oklahoma keeps $34 more ($6,585), Utah keeps $34 more ($6,585), Nebraska keeps $29 more ($6,580), New Mexico keeps $9 more ($6,560) and Kansas leaves $74 less ($6,477). Nebraska, New Mexico, Oklahoma, Utah and Wyoming are the only borders worth crossing for the tax alone.

While everyone pays the same 4.4% rate in Colorado, the economic impact differs. A $50,000 earner pays $1,492 (3.0% of salary, after the $16,100 standard deduction) and a $300,000 earner pays $12,492 (4.2%), but the $1,492 comes out of a budget with far less room to spare. Flat taxes are proportionally equal, but not necessarily equitable: lower earners pay a larger percentage of their ability to cover necessities, while high earners benefit from not being pushed into higher brackets like they would be in progressive states.

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