Cálculo del SDI 2026: factor de integración por antigüedad, aguinaldo y prima
Estimates only, not financial advice. What you type stays on your device. Checked against sources on 20 Oct 2026.With the legal minimum benefits the integration factor in the first year is 1.0493: 15 days of aguinaldo plus 25% on 12 vacation days, over 365. A daily salary of 500 pesos then integrates to an SDI of 524.66 pesos. Since the 2023 vacation reform the factor rises each year of service, to 1.0548 in year 5 and 1.0630 after 30 years.
2026 · Rates and rules read from the sources listed on this page (the earliest on 20 Oct 2026); they may have changed since.
Enter the daily salary.
Pick the year of service.
Read the factor and the SDI.
The salario diario integrado (SDI) is the daily salary plus the daily share of the benefits a worker receives every year. The IMSS uses it as the salario base de cotización, the base of every IMSS quota, and Mexican labour courts use it for severance.
factor = 1 + (aguinaldo days + vacation days × prima vacacional) ÷ 365
The law's minimums. The Ley Federal del Trabajo gives at least 15 days of aguinaldo (article 87) and a prima vacacional of at least 25% (article 80). Since the 2023 reform of article 76, vacations start at 12 days in the first year and rise by two days a year to 20 days in year 5, then by two days every five years: 22 from year 6, up to 32 after 30 years. So the minimum factor is 1.0493 in the first year, 1.0548 in year 5 and 1.0630 after 30 years.
The rest of the article, and all 6 questions about Mexico SDI Calculator (Salario Diario Integrado), are on the Mexico SDI Calculator (Salario Diario Integrado) page.
Multiply the daily salary by the integration factor and add any other fixed benefits a year divided by 365. The factor is 1 plus the aguinaldo days and the vacation days times the prima vacacional, all over 365. For 500 pesos a day in the first year that gives 524.66 pesos.
With the legal minimum benefits the factor is 1.0493 in the first year, 1.0507 in the second, 1.0548 in the fifth and 1.0562 from year 6. It rises with seniority because the 2023 reform of article 76 adds vacation days every year up to year 5 and then every five years.
Article 27 of the Ley del Seguro Social includes cash pay, bonuses, food, housing, premiums, commissions and benefits in kind. It excludes work tools, qualifying savings funds, employer quotas and INFONAVIT contributions, profit sharing, vales up to 40% of the minimum wage and attendance or punctuality bonuses up to 10%.
Yes. Article 28 caps the salario base de cotización at 25 times the unit of account, which in 2026 is 25 times the UMA of 117.31 pesos: 2,932.75 pesos a day. A higher SDI is still the worker's integrated salary, but IMSS quotas stop rising above the cap.
Rates and rules change; check the source before you rely on a figure.
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