New Mexico bonus tax calculator

What the 22% actually is

It is a withholding instruction to your payroll department, and nothing more.

The IRS sets a flat withholding rate for supplemental wages, a category that covers bonuses, commissions, severance, back pay and overtime paid separately from regular salary. Your employer applies it mechanically to the payment. It is not related to your bracket, your filing status, your W-4, or how much you earned in the rest of the year.

When you file your return, the bonus is added to everything else you were paid and taxed as ordinary income at whatever rates your total lands in. The 22% already handed over is credited against that bill. If it was too much you get the excess back. If it was too little you write a cheque.

That is the entire mechanism, and it is the reason this page exists. A great many bonus calculators present the 22% as the tax, which produces a take-home figure that is right for exactly one group of people: those whose marginal rate happens to be 22%.

A worked example on a $5,000 bonus

The calculator opens on a $5,000 bonus with no wages yet paid this year, which keeps the whole payment below the Social Security cap.

So $1,482.50 leaves before any state has taken a share, and about 70 cents in the dollar arrives. Add a state that withholds on wages and the figure falls further.

Now change one input. Set wages already paid this year to $180,000. The 2026 Social Security wage base is $184,500, so only $4,500 of room remains: Social Security on the bonus drops from $310 to $279 and the take-home rises accordingly. Set it to $198,000 instead and a different line appears, because the additional Medicare surcharge of 0.9% starts at $200,000 for a single filer and the bonus crosses it. Both behaviours are in the tool because both are in the law, and neither shows up on a page that treats a bonus as a standalone payment.

Why did my employer take a different amount?

Because there are two legal methods and you do not choose which one is used.

The percentage method is the flat 22% described above, and it is only available when the bonus is identified separately from regular wages. The aggregate method adds the bonus to your normal pay for that period and withholds on the combined figure as though that were your usual cheque. Because withholding tables are built to annualise whatever they are shown, a single large cheque looks like an enormous salary and withholding is calculated accordingly.

The aggregate method usually takes more, sometimes far more, and it is the reason a bonus occasionally seems to evaporate. Nothing has gone wrong. The over-withholding comes back at filing exactly as the under-withholding gets collected. If your employer used the aggregate method, this calculator will show a more optimistic figure than your payslip does.

Both methods are set out in IRS Publication 15. Neither is negotiable by you, though it is worth asking payroll which one they run, because it changes when you get the money rather than how much of it you keep.

Does the 22% mean I am being taxed at 22%?

No, and the gap runs in both directions.

A single filer earning $60,000 in 2026 has a marginal rate of 22% only because taxable income is what remains after the $16,100 standard deduction. Read the bands on our federal tax brackets page before assuming which one your bonus lands in, since it is the last dollars of the year that matter, not the average.

For high earners the point is sharper. If your marginal rate is 32% or 35%, a 22% withholding leaves a real shortfall that nobody bills you for until April. A large bonus in a high-earning year is one of the most common causes of an unexpected tax payment, and it is entirely predictable in advance.

Reducing what a bonus costs you

You cannot change the withholding rate. You can change the income the bonus is eventually taxed on.

• Defer part of it into a traditional 401(k). Contributions reduce the income federal and state income tax are worked out on, up to the $24,500 elective deferral limit for 2026. Many plans allow a separate deferral percentage for bonus payments, set independently from your salary rate.
• Use an HSA if you are eligible. Contributions made through payroll avoid income tax and, unlike a 401(k), avoid FICA as well.
• Time it, if you have any say. A bonus paid in a year when your income is unusually low is taxed at lower marginal rates. Most people have no control here, but some bonus plans allow a deferral election made in advance.
• Do not expect FICA to move. A 401(k) contribution never escapes Social Security or Medicare. Those come out of the gross figure regardless.

Deferring is not free money. It is money you have decided to spend later, and it is locked in a retirement account until then. Our investing section covers the trade-off in more detail.

Before the bonus lands

• Ask payroll whether the bonus is paid separately or added to a regular cheque
• Check your year-to-date wages against the $184,500 Social Security cap
• Work out your marginal rate for the whole year, not the 22% on the payslip
• Ask whether your plan allows a separate bonus deferral percentage
• Check whether your state has a supplemental withholding rate of its own
• Set aside the shortfall now if your marginal rate is above 22%

The mistakes people make with a bonus

Treating the take-home figure as the tax bill. It is a withholding figure. Half of the people reading this will get some of it back and the other half will owe more.

Assuming a bonus pushed them into a higher bracket and cost them money. Brackets are marginal. Only the dollars above a threshold are taxed at the higher rate, so a bonus always leaves you with more than you had. The FICA explainer covers the one genuine cliff edge, which is the 0.9% Medicare surcharge, and even that only applies to the dollars above the line.

Spending the gross. A $10,000 bonus is roughly $7,000 in hand before state tax, and people commit to the larger number.

Filing a new W-4 in a panic. Changing your W-4 because a bonus was over-withheld affects every future paycheck, not the bonus that already happened. If you want the money sooner, adjust deliberately using the IRS estimator rather than reactively.

Forgetting a second job. The Social Security cap and the Medicare surcharge threshold apply to your combined wages for the year. Two employers each withhold as though they were the only one, which is a common source of both over-withholding and surprise surcharges.

What this calculator does not do

Taken from the tool's own caveats, which appear beneath the result:

• It is not your tax return. The 22% is a withholding rate. If your marginal rate is lower, the excess comes back as a refund when you file; if it is higher, you owe the difference.
• It applies the flat method only. Supplemental wages above $1,000,000 in a calendar year are withheld at 37% on the excess, and the tool handles that, but it cannot reproduce an employer using the aggregate method.
• State handling is deliberately incomplete. A flat-rate state is computed exactly. A state with graduated brackets is refused, because we publish its top marginal rate rather than its full bracket table, and applying a top rate to every dollar would overstate the bill.
• No state standard deduction is applied to the bonus. That allowance is annual and your salary has already used it, so deducting it again here would understate the tax.
• Local taxes, benefit deductions and garnishments are invisible to it. So is anything your employer takes out after tax.

To see how the same rates apply to your regular pay rather than a one-off payment, use the paycheck calculator. Our full method for these tools is on the methodology page, and nothing here is tax advice: see the disclaimer.