Estimate based on progressive ISR brackets (monthly/annual). This tool does not include all payroll details (e.g., IMSS, local payroll taxes, exact subsidy mechanics, special regimes, or treaty effects).
How this Mexico income tax calculator works
This calculator gives you a quick estimate of ISR (Impuesto Sobre la Renta) on employment or personal income in Mexico. Mexico uses a progressive tax system, so different portions of your income are taxed at different rates.
To estimate your tax, the calculator applies a bracket method:
- Find the bracket where your taxable income falls.
- Apply the fixed cuota for that bracket.
- Add the percentage over the lower limit.
What to enter in each field
1) Gross income
Enter your salary or income before ISR is withheld. You can select whether that amount is monthly or annual.
2) Additional taxable income
Include taxable extras such as bonuses, commissions, freelance earnings, or any other amount that increases your taxable base for the selected period.
3) Deductions / exempt amounts
Enter amounts that reduce your taxable base. For a rough estimate, this can represent exempt compensation components or deductible items relevant to your scenario.
Quick interpretation of your result
After calculation, you will see:
- Taxable base used for ISR estimation.
- Estimated ISR for your selected period.
- Equivalent monthly and annual ISR for comparison.
- Estimated net income after ISR.
- Effective rate and marginal rate.
Important limits of any online tax estimator
Real payroll calculations in Mexico can include elements that vary by employer, contract, and tax profile. A basic estimator usually does not capture all of the following:
- Subsidio al empleo nuances and eligibility mechanics.
- IMSS employee contributions and social security classes.
- Aguinaldo exemptions, PTU treatment, vacation premium details.
- State-level payroll taxes and sector-specific rules.
- RegĂmenes fiscales (e.g., RESICO, business activity) and annual reconciliations.
Example scenarios
Employee paid monthly
If your monthly gross income is MXN 30,000 and you have MXN 1,500 in non-taxable/exempt components for the month, this tool estimates your ISR with the monthly bracket schedule and returns a monthly and annualized view.
Independent professional planning annually
If your annual gross income is MXN 900,000, with MXN 50,000 in eligible deductions/exempt offsets and MXN 30,000 in additional taxable receipts, select annual mode to view a broad annual ISR estimate and equivalent monthly burden.
Tips to improve tax planning in Mexico
- Track monthly income and invoices consistently.
- Separate personal and business expenses when possible.
- Validate deductible expenses against SAT requirements.
- Recalculate when income changes, especially with bonuses or side projects.
- Before filing, compare estimates with your accountant or payroll records.
Frequently asked questions
Is this an official SAT calculator?
No. It is an educational estimator designed to help with quick planning and budgeting.
Can I use this for employees and freelancers?
Yes, as a rough estimate. Exact obligations can differ by tax regime and filing method.
Does this replace professional tax advice?
No. For payroll audits, annual returns, or high-value decisions, consult a qualified tax professional in Mexico.