Aguinaldo Calculator 2026 (Mexico): Amount and ISR
Calculate your aguinaldo in Mexico for 2026: 15 days or more, the proportional part, the 30 UMA tax-free amount and the ISR under articles 174 and 96.
What it does
The aguinaldo is the year-end bonus that every worker in Mexico must receive before 20 December: at least 15 days of salary (article 87 of the Federal Labour Law), or the proportional part if you did not work the whole year. Up to 30 UMA (MXN 3,519.30 in 2026) is tax-free; ISR on the rest can be calculated by article 174 of the ISR Regulations, which spreads it over the year and usually costs less.
How to use it
- Type your monthly salary.
- Type the aguinaldo days of your contract and the days you worked this year.
- Read the gross aguinaldo, the tax-free part, the ISR and the net amount.
The arithmetic runs in your browser. Nothing you type is sent anywhere and nothing is stored, so you can use these with real numbers.
Frequently asked questions
How much is the aguinaldo on MXN 15,000 a month?
15 days are MXN 7,500. MXN 3,519.30 is tax-free and the ISR on the remaining 3,980.70 is MXN 713.34 by article 174, leaving MXN 6,786.66.
What if I did not work the whole year?
You receive the proportional part: aguinaldo days × days worked ÷ 365. Half a year of work gives half the aguinaldo, even if you have already left the job.
When must the aguinaldo be paid?
Before 20 December. It can be paid earlier or in parts, but the full amount must be paid by that date.
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