Brackets
The department’s HB 252 release said New Mexico would move to six brackets with rates from 1.5% to 5.9%. The 2025 rate table applies 4.9% from $100,000 and 5.9% above $210,000 for single filers, and above $315,000 for joint filers.
Below $100,000 the 2025 table gives tax amounts rather than rates, so use the table or software rather than a hand calculation.