Calcufast

Mexico payroll ISR calculator

Estimate monthly ISR withholding (SAT 2026 Anexo 8) and net pay, with or without the IMSS worker quota

Common salaries

You might also like

Mexico IMSS worker contribution calculator

Estimate the monthly IMSS amount withheld from the worker on your wage (SBC)

Mexico aguinaldo ISR calculator

Calculate the 15-day aguinaldo, the 30 UMA exemption (LISR art. 93) and estimated ISR

Mexico vacation pay and prima vacacional calculator

Calculate your vacation days and prima vacacional (25%) under the Federal Labor Law

Mexico payroll ISR: gross vs net

Mexican employers withhold ISR on wages each month. The 2026 tariff is in Anexo 8 of the Miscellaneous Tax Resolution (DOF 28 December 2025). LISR article 96 applies: find the bracket, add the fixed fee, then the percent on the excess over the lower limit.

Quick answer

On $10,000 a month, 2026 tariff ISR is $729.02. Minus the IMSS worker quota ($237.50), estimated net pay is $9,033.48. This page does not apply the employment subsidy.

Educational estimate

This is not a SAT withholding certificate. It omits employment subsidy, exempt fringe benefits, INFONAVIT loan withholding and the annual adjustment.

How it is calculated

Monthly ISR (LISR art. 96)

ISR = bracket fixed fee + (taxable income − lower limit) × excess rate

The table is the official monthly Anexo 8 RMF 2026 schedule (same figures as the Spanish page).

Example $10,000

| Item | Amount | |---|---| | Lower limit | $7,168.52 | | Excess | $2,831.48 | | ISR | $420.95 + $2,831.48 × 10.88% = $729.02 |

Related