Estimated income tax
This is the tax calculated for the selected pay frequency or tax year.
Legal & Tax
Mexico income tax (ISR) calculator
Estimate payroll withholding or annual income tax and understand the bracket applied to your taxable base.
Mexico income tax · 2026
Enter your taxable base
The amount must be the taxable base for the selected scope. The calculator does not automatically subtract deductions from it.
Scope of this version: it uses Mexico's 2026 income-tax tables and does not automatically apply personal deductions, IMSS, INFONAVIT, or other items outside the entered taxable base.
Always check your pay stub, tax records, and tax situation with the relevant authority or a professional when you need an official determination.
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How to interpret the result
A progressive table does not apply the marginal rate to all income: it uses a fixed amount plus the bracket rate on the excess above its lower bound.
Effective rate
This is the estimated income tax divided by your taxable base; it is not the same as the marginal rate.
Balance
It only compares the calculation with the withholding entered. It is not an official assessment.
Frequently asked questions
What does this tool calculate?
It calculates an informational income-tax estimate using the selected official Mexico 2026 table. You can estimate payroll withholding or annual tax.
What taxable base should I enter?
Enter the taxable base for the pay period or tax year—the amount already subject to the income-tax calculation. Do not subtract deductions from that base again.
What is the difference between withholding and annual tax?
Withholding is the estimated income tax on a specific payment based on its frequency. Annual tax uses the tax-year table and is compared with accumulated withholding.
Does the balance show how much I owe SAT?
No. The balance is an informational comparison between calculated tax and the withholding entered. Your final liability may change because of deductions, additional income, credits, and other circumstances.
Does the calculator include personal deductions or IMSS?
Not automatically. This version calculates basic income tax and does not include personal deductions, IMSS, INFONAVIT, or other items not entered or requiring additional rules.