How Are Lottery Winnings Taxed in New Mexico?

Lottery winnings in New Mexico are taxed as ordinary income at both the state and federal level. The New Mexico Lottery withholds 6% in state tax and 24% in federal tax from any prize over $5,000 before you see a check.¹² Those withholdings are only a down payment. Your true state liability runs up to 5.9% under New Mexico’s graduated brackets, and your federal bill can reach 37% on a large prize, so most winners owe a substantial balance when they file the following April.

What Gets Withheld at Payout

Two deductions come off the top of any prize larger than $5,000. The IRS pulls 24% under 26 U.S.C. Section 3402(q).³ New Mexico pulls a flat 6%.¹ Both are calculated on the full prize amount and documented on IRS Form W-2G, which the lottery issues when you claim.²

If you don’t provide a valid taxpayer identification number when claiming, federal backup withholding still comes out at 24%.² Prizes between $600 and $5,000 are reported to tax authorities but not withheld from at payout, so you’ll receive the full amount and settle the tax yourself at filing.¹

What You Actually Owe

New Mexico State Tax

New Mexico taxes lottery winnings through its graduated personal income tax brackets under NMSA 1978, Section 7-2-7. Rates run from 1.5% at the bottom to a top rate of 5.9% on income above $210,000 for single filers and above $315,000 for married couples filing jointly.⁴ A sizable prize will push nearly all of your winnings into that top 5.9% bracket.

Because the 6% withheld slightly exceeds the 5.9% top rate, and because the first dollars of income flow through lower brackets, most winners see a small state refund rather than a state balance due. If you had significant other income in the same year, the gap narrows.

Federal Tax

Lottery winnings are ordinary income for federal purposes, and a large prize lands in the top bracket. For 2026, the 37% rate applies to taxable income above $640,600 for single filers and above $768,700 for married couples filing jointly. The 24% withheld at payout is roughly 13 percentage points short of what you actually owe on income taxed at the top rate. That shortfall is due with your return.

A Worked Example on a $500,000 Prize

For a single filer with no other income who wins $500,000, the arithmetic looks like this:

Federal withholding at payout: $120,000 (24% of $500,000)
New Mexico withholding at payout: $30,000 (6% of $500,000)
Cash received at the lottery office: $350,000
Additional federal tax owed at filing: roughly $40,000 to $45,000, because the top bracket rate of 37% exceeds the 24% already withheld
State tax adjustment: a small refund, since the 6% withholding slightly exceeds the effective state rate

Net after all taxes: approximately $285,000 to $290,000. The exact figure shifts with filing status, other income, and deductions, but the pattern holds across any large win. The surprise for most winners is that April bill from the IRS. Setting aside at least 15% of the cash you receive, in a separate account you don’t touch, is a practical cushion for the shortfall.

Lump Sum vs. Annuity

For Powerball and Mega Millions, the advertised jackpot is the annuity value. Choosing the lump sum means accepting roughly 50% to 65% of that headline number, because the cash option reflects what the lottery has on hand rather than decades of future investment growth.

Both options are taxed as ordinary income. The difference is timing. A lump sum concentrates the entire prize into one tax year, which locks in the top 37% federal bracket and the top 5.9% New Mexico bracket on nearly all of it. The annuity spreads 30 payments across 30 years, with each payment increasing by about 5% annually. Smaller annual payments can keep the marginal rate lower on each one, though a true jackpot will still clear the top brackets regardless.

Neither choice is universally better. The lump sum gives you control to invest, pay off debt, and hedge against inflation. The annuity enforces discipline and delivers the full advertised value over time.

Deducting Gambling Losses

Federal law lets you deduct gambling losses, but only if you itemize, and only up to the amount of gambling winnings you reported. Losses cannot create a net deduction against your salary.⁵

Starting in tax year 2026, a new restriction under the One Big Beautiful Bill Act limits the deduction to 90% of losses. The remaining 10% is gone. If you won $50,000 and lost $50,000 across the year, you can deduct $45,000, leaving $5,000 of winnings taxable even though you kept nothing. Keep dated records of every wager, because the New Mexico Taxation and Revenue Department can request documentation for any deduction you claim.⁶

Group Wins and Shared Tickets

Office pools are common and informal, and the IRS treats them formally anyway. When one person claims a prize that’s actually shared with a group, that person must file IRS Form 5754, listing each member’s name, taxpayer identification number, and share.⁷ The lottery then issues separate W-2Gs to each winner for their share.

Skip Form 5754 and the entire prize gets reported under one Social Security number. That person owes tax on the full amount, and distributing shares to the others can trigger gift tax problems on top of a years-long cleanup with the IRS.

Nonresidents and Non-Resident Aliens

Buying a ticket while passing through New Mexico doesn’t exempt you from state tax. Under NMSA 1978, Section 7-2-11, nonresident gambling winnings from a New Mexico source are allocated to New Mexico, and the 6% withholding applies at payout to residents and nonresidents alike.⁸¹ If your home state also taxes the income, you can usually claim a credit there to avoid double taxation, subject to that state’s rules.

Non-resident aliens face a steeper federal rule. The IRS withholds 30% on gross gambling proceeds under chapter 3 withholding, unless a tax treaty between the United States and your country provides a lower rate.⁹

Filing Your Return

You report gross lottery winnings on your federal return and on New Mexico Form PIT-1. The W-2G issued by the lottery gives you the three numbers you need: gross prize, federal tax withheld, and state tax withheld. Check every field before leaving the lottery office, because mismatches between the W-2G and your return invite IRS notices.⁶

Amounts already withheld appear as credits on your return. Most winners end up owing additional federal tax because 24% withholding falls well short of the 37% owed on income in the top bracket, while the state side often produces a small refund. Returns are due the following April. If you’re facing a large federal balance and want to avoid underpayment penalties, make estimated tax payments during the year rather than waiting for filing season.

A prize of any real size is worth a session with a tax professional. The combination of graduated state rates, top federal brackets, the new 90% loss cap, and the lump-sum-versus-annuity decision creates enough moving parts that paid advice usually pays for itself.

1
New Mexico Lottery. Winners/Claiming Prizes
2
Internal Revenue Service. Instructions for Forms W-2G and 5754
3
Office of the Law Revision Counsel. 26 U.S. Code 3402 – Income Tax Collected at Source
4
Justia Law. New Mexico Code 7-2-7 – Individual Income Tax Rates
5
Internal Revenue Service. Topic No. 419, Gambling Income and Losses
6
New Mexico Taxation and Revenue Department. Instructions for 2025 PIT-1 New Mexico Personal Income Tax Return
7
Internal Revenue Service. Form 5754 – Statement by Person(s) Receiving Gambling Winnings
8
Justia Law. New Mexico Code 7-2-11 – Tax Credit, Income Allocation and Apportionment
9
Internal Revenue Service. Publication 515 (2026), Withholding of Tax on Nonresident Aliens and Foreign Entities