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Tax year 2026

New Mexico vs Oklahoma Income Tax — 2026

A single filer earning $100,000 pays $385 less per year in New Mexico than in Oklahoma — $32 a month. New Mexico charges $3,569; Oklahoma charges $3,955.

Why this pair has a page: bordering states.

New Mexico at $100K
$3,569
3.57%
Oklahoma at $100K
$3,955
3.95%
Annual difference
$385
$32 a month
National ranks
22 vs 28
of 50, lowest tax first

The bill at every income

Single filer, standard deduction, no dependents. State income tax only.

New Mexico and Oklahoma income tax compared at seven income levels, 2026
Gross incomeNew Mexico taxOklahoma taxDifference
$50,000$1,184$1,705$520 less in NM
$75,000$2,359$2,830$470 less in NM
$100,000$3,569$3,955$385 less in NM
$150,000$6,019$6,205$185 less in NM
$250,000$11,158$10,705$454 less in OK
$500,000$25,908$21,955$3,954 less in OK
$1,000,000$55,408$44,455$10,954 less in OK
Annual state income tax, New Mexico versus Oklahoma
NM at $50,000: $1,184NM at $50,000$1,184OK at $50,000: $1,705OK at $50,000$1,705NM at $75,000: $2,359NM at $75,000$2,359OK at $75,000: $2,830OK at $75,000$2,830NM at $100,000: $3,569NM at $100,000$3,569OK at $100,000: $3,955OK at $100,000$3,955NM at $150,000: $6,019NM at $150,000$6,019OK at $150,000: $6,205OK at $150,000$6,205NM at $250,000: $11,158NM at $250,000$11,158OK at $250,000: $10,705OK at $250,000$10,705NM at $500,000: $25,908NM at $500,000$25,908OK at $500,000: $21,955OK at $500,000$21,955NM at $1,000,000: $55,408NM at $1,000,000$55,408OK at $1,000,000: $44,455OK at $1,000,000$44,455

How the two systems differ

New Mexico and Oklahoma income tax systems compared
New MexicoOklahoma
Tax structureGraduatedGraduated
Top marginal rate5.9%4.5%
Number of brackets64
Standard deduction (single)$16,100$6,350
Personal exemptionNone$1,000
Local income taxesNoNo
Capital gainspreferentialordinary
Population (2024)2,130,2564,095,393

By filing status

New Mexico and Oklahoma tax on $100,000 by filing status, 2026
Filing statusNew MexicoOklahomaDifference
Single$3,569$3,955$385 less in NM
Married filing jointly$2,576$3,409$833 less in NM
Married filing separately$3,706$3,955$249 less in NM
Head of household$2,954$3,605$651 less in NM

Change the assumptions

Adjust income and filing status, or swap either state. The URL updates so you can share the exact comparison.

At $100,000 as a single filer, New Mexico costs $385 less per year than Oklahoma — $32 a month.

New Mexico compared with Oklahoma at $100,000
New MexicoOklahomaDifference
State income tax$3,569$3,955$385
Per month$297$330$32
Effective rate3.57%3.95%0.39 pts
Marginal rate4.9%4.5%0.40 pts
Standard deduction$16,100$6,350$9,750
Taxable income$83,900$92,650$8,750
Tax structureGraduatedGraduated
Local income taxesNoNo

Full detail: New Mexico · Oklahoma · methodology

What this comparison leaves out

Sources for both states

  1. 1.New Mexico Taxation and Revenue DepartmentState revenue department
    FYI-104, New Mexico Withholding Tax, Effective January 1, 2026 (Rev. 11/2025)
    https://realfile.tax.newmexico.gov/FYI-104.pdf
    Retrieved · 2026 percentage-method tables reproduce the same 1.5%/3.2%/4.3%/4.7%/4.9%/5.9% progression and the same bracket widths ($8,000, $25,000, $50,000, $100,000, $315,000 above the deduction offset for married filers), confirming the statutory schedule is unchanged for 2026.
  2. 2.Tax FoundationResearch organisation (cross-check)
    State Individual Income Tax Rates and Brackets, 2026
    https://taxfoundation.org/data/all/state/state-income-tax-rates-2026/
    Retrieved · Reproduces the same six brackets for both filing schedules.
  3. 3.Oklahoma Tax CommissionState revenue department
    2026 Oklahoma Income Tax Withholding Tables (Packet OW-2, revised 11-2025)
    https://www.oklahoma.gov/content/dam/ok/en/tax/documents/resources/publications/businesses/withholding-tables/WHTables-2026.pdf
    Retrieved

Figures on this page were last checked against these sources on . Found something wrong? Report it.