Mexico Payroll Calculator — ISR + Aguinaldo
Enter monthly gross in pesos for a simplified ISR estimate, proportional aguinaldo for days worked, and basic finiquito parts. Free, private, fast online now.
Free, no signup needed. Runs 100% in your browser.
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How to use this tool
- Enter your monthly gross salary in pesos.
- Set days worked and years of service.
- See ISR, aguinaldo, and finiquito basics.
Frequently asked questions
How is ISR estimated?
With a simplified monthly effective-rate table inspired by LISR bands, capped for illustration. Real withholding uses the official tariff, subsidies, and UMA values.
How is aguinaldo computed?
As daily salary × 15 days × (days worked / 365), the legal minimum of 15 days prorated. Many employers pay more.
Is it free?
Yes, free with no signup. Verify with an accountant before payroll decisions.
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