Complete guide: Income tax · Mexico
Updated:
ISR using official SAT 2026 Annex 8 monthly or annual tables. Enter taxable pay for the period after exemptions and any legally applicable employment subsidy. Annual table is applied directly, not monthly values multiplied by 12. Item-specific exemptions, automatic subsidy, fortnightly tables and cumulative payroll adjustment are not calculated.
Employment governed by the Federal Labor Law. ISR, subsidy and IMSS require separating taxable salary, integrated salary and contribution bases.
Estimates in local currency, without conversion. Document review: 2026-10-23; laws, tables and monetary units are not automatically synchronized. Default salaries are examples, not legal minimum wages. Check your contract, collective agreement and payslip before making decisions.
Sources and legal scope
Document review: 2026-10-23
How it works
- 1Tax = fixed accumulated tax + bracket excess × rate − credits; marginal scales sum all bands.
- 2Separate salary bases, accrued entitlements and payments already received.
- 3Compare the result with the sources and the stated employment scenario.
Frequently asked questions
Which Mexico rules apply?
ISR using official SAT 2026 Annex 8 monthly or annual tables. Enter taxable pay for the period after exemptions and any legally applicable employment subsidy. Annual table is applied directly, not monthly values multiplied by 12. Item-specific exemptions, automatic subsidy, fortnightly tables and cumulative payroll adjustment are not calculated.
Is this a final tax filing or employment claim calculation?
Employment governed by the Federal Labor Law. ISR, subsidy and IMSS require separating taxable salary, integrated salary and contribution bases.
Are inputs preserved when sharing?
Yes. The link retains entered amounts and options. Laws may change; check the date and sources.