New Mexico levies a graduated state income tax with five brackets running from 1.5% up to a top rate of 5.9%. Because the state starts from your federal AGI and conforms to the federal standard deduction, the calculation is straightforward once you know your income and filing status. This tool computes your New Mexico state tax only and shows both your effective rate and the marginal bracket you land in.
How it works
The calculation mirrors the New Mexico PIT return:
- Start from federal AGI. Enter your federal adjusted gross income.
- Subtract the standard deduction. New Mexico conforms to the federal amount (about
$15,000single,$30,000married filing jointly in 2025), giving your New Mexico taxable income. - Apply the graduated brackets. The progressive rates of
1.5%,3.2%,4.7%,4.9%and5.9%are applied to successive income bands — only the portion of income within each band is taxed at that band’s rate. - Subtract credits. Any nonrefundable credits you enter reduce the computed tax, but not below zero.
Tips and notes
- The brackets are marginal: a single filer with
$60,000AGI does not pay 4.9% on the whole amount — only the slice above the 4.7% threshold is taxed at the higher rate, which is why the effective rate is lower than the marginal rate. - New Mexico offers a low- and middle-income exemption and a working-families tax credit that can meaningfully cut the bill for lower earners; enter those in the credits field.
- This estimate excludes federal income tax and FICA. For a full take-home figure, pair it with the New Mexico paycheck calculator, which layers in federal tax and payroll deductions.