Income Tax 2025: Complete Guide to Calculation and Table

Income Tax 2025 brings important updates that every Brazilian taxpayer needs to know. With changes to tax rates, adjustments to the exemption bracket, and new deduction rules, understanding how to calculate IR correctly is essential to avoid problems with the Federal Revenue Service and optimize your tax situation. In this complete guide, you’ll learn everything about the progressive table, calculation methods, and strategies to legally reduce your tax liability.

Income Tax 2025

The year 2025 marks a period of important transformations in the Brazilian tax system, especially regarding Individual Income Tax (IRPF - individual income tax). The changes implemented by the Federal Revenue Service aim to update tax bracket values and improve tax control mechanisms.

Legislative changes

The main novelty for 2025 is the adjustment of Income Tax brackets, which hadn’t undergone significant changes since 2015. The federal government implemented a correction based on the accumulated National Consumer Price Index (IPCA) from recent years, resulting in adjustments that benefit millions of taxpayers.

Additionally, data cross-referencing mechanisms between different agencies have been improved, making oversight more efficient and reducing tax evasion opportunities. Rules for declaring overseas assets have also been updated, requiring more detailed information.

Exemption bracket

For the 2024 calendar year, to be declared in 2025, the Income Tax exemption bracket was set at R$ 2,259.20 monthly, which represents R$ 27,110.40 annually. This means taxpayers with monthly income up to this amount are exempt from tax payment.

This update represents important tax relief for lower-income workers, considering the previous amount remained unchanged for almost a decade. The adjustment benefits approximately 3 million new taxpayers who are removed from the IR tax base.

Progressive Table 2025

The 2025 Income Tax progressive table establishes different rates according to the taxpayer’s income bracket, following the principle of tax progressivity provided in the Federal Constitution.

Rates by bracket

The current structure of the 2025 IR progressive table is organized as follows:

First bracket: Up to R$ 2,259.20 - 0% rate (exempt) Second bracket: From R$ 2,259.21 to R$ 2,826.65 - 7.5% rate Third bracket: From R$ 2,826.66 to R$ 3,751.05 - 15% rate Fourth bracket: From R$ 3,751.06 to R$ 4,664.68 - 22.5% rate Fifth bracket: Above R$ 4,664.68 - 27.5% rate

This structure ensures that only the portion of income exceeding each bracket is taxed at the corresponding rate, making the system more fair and proportional to each person’s ability to pay.

Deductible amount

To facilitate tax calculation, the Federal Revenue Service provides deductible amounts corresponding to each tax bracket:

• Up to R$ 2,259.20: R$ 0.00
• From R$ 2,259.21 to R$ 2,826.65: R$ 169.44
• From R$ 2,826.66 to R$ 3,751.05: R$ 381.44
• From R$ 3,751.06 to R$ 4,664.68: R$ 662.77
• Above R$ 4,664.68: R$ 896.00

These amounts represent a fixed value that must be subtracted from the initial tax calculation, significantly simplifying the process of determining the amount due.

How to Calculate IR

Income Tax calculation follows a specific methodology that considers not only gross income but also legal deductions permitted by tax legislation.

Calculation method

The IR calculation process can be summarized in five main steps:

1. Calculation base identification: Add all taxable income for the period (salaries, rent, financial investments, etc.)

2. Deduction application: Subtract deductible amounts such as social security contributions, dependents, health and education expenses

3. Progressive table classification: Identify which bracket of the progressive table the net income falls into

4. Rate application: Multiply the amount by the corresponding rate

5. Deductible amount subtraction: Deduct the fixed amount from the corresponding bracket

Practical example

Let’s calculate the IR for a professional with monthly income of R$ 5,000.00:

Monthly gross income: R$ 5,000.00 INSS (social security) (11%): R$ 550.00 Calculation base: R$ 4,450.00

Since R$ 4,450.00 falls into the fifth bracket (above R$ 4,664.68), we apply:

• Rate: 27.5%
• Initial calculation: R$ 4,450.00 × 27.5% = R$ 1,223.75
• Deductible amount: R$ 896.00
• IR due: R$ 1,223.75 - R$ 896.00 = R$ 327.75

To facilitate these complex calculations, we recommend using our Income Tax calculator, which automates the entire process and ensures accurate results.

Permitted deductions

Legal deductions represent one of the main strategies for reducing tax liability, provided they are proven through adequate documentation.

Dependents

Each dependent allows deducting R$ 2,275.08 annually (R$ 189.59 monthly) from the IR calculation base. Dependents include: children and stepchildren up to 21 years old, children and stepchildren in college up to 24 years old, spouse or partner without income or with income below the exemption bracket, parents and in-laws who receive income below the exemption bracket.

Health expenses

There’s no limit for medical expense deductions, provided they are for yourself, spouse, or dependents. Deductible items include: medical and dental consultations, exams, hospitalizations, treatments, health plans, orthopedic devices, and prosthetics. It’s essential to keep all receipts and invoices organized.

Education

Education expenses have an annual limit of R$ 3,561.50 per person (taxpayer and each dependent). Deductible expenses include: early childhood education, elementary and high school, higher education, graduate studies (specialization, master’s and doctoral degrees), technical and professional courses.

Withholding tax vs annual return

Income Tax can be collected in two main ways: at source (IRRF - income tax withheld at source) and through annual return (IRPF), each with specific characteristics.

Income Tax Withheld at Source is deducted directly from CLT (labor law) workers’ salaries, following the monthly progressive table. This deduction works as an advance payment of the tax due, calculated on gross compensation minus mandatory social security contributions.

The annual return allows fine-tuning of this taxation, considering all income received during the year and applying permitted deductions. This is when taxpayers can recover overpaid amounts (refund) or supplement insufficient payments.

Refund and supplement

The difference between tax withheld at source and what’s due in the return determines whether the taxpayer will be entitled to a refund or need to pay a supplement.

A refund occurs when the amount withheld at source during the year exceeded the tax due in the return. In this case, the Federal Revenue Service returns the difference in batches throughout the year, prioritizing elderly people, disabled individuals, taxpayers who used the pre-filled return, and those who chose PIX as their payment method.

A supplement (or tax to pay) happens when the withheld amount was insufficient to cover the tax due. In this case, the taxpayer must make payment by the return deadline, with the option to installment the amount in up to 8 payments, with Selic interest rates applied.

IR Calculator

Given the complexity of calculations involving Income Tax, especially when there are multiple income sources and various deductions, using specialized tools becomes essential to ensure result accuracy.

Our calculator automates the entire calculation process, considering the updated progressive table, permitted deductions, and particularities of each situation. The tool is especially useful for:

• Simulating different income and deduction scenarios
• Checking the impact of salary increases on taxation
• Planning legal tax reduction strategies
• Verifying calculations made by human resources departments
• Assisting self-employed professionals with tax planning

Money-saving tips

There are various legal strategies to reduce Income Tax liability, all based on maximizing permitted deductions under the law.

Maximize dependent deductions: If you financially support parents, in-laws, or other relatives who meet dependency rules, include them in your return to take advantage of the monthly R$ 189.59 deduction per person.

Organize health expenses: Since there’s no limit for medical deductions, maintain strict control of all expenses for yourself, spouse, and dependents. Include health plans, consultations, exams, prescription medications, and treatments.

Invest in education: Make the most of the R$ 3,561.50 annual limit per person for educational expenses. Consider professional development courses, graduate studies, and other knowledge investments.

Contribute to private pension: PGBL contributions are deductible up to 12% of annual gross income, representing an excellent strategy for simultaneous retirement and tax planning.

Keep documentation organized: Have all vouchers, receipts, and invoices properly filed. Lack of documentation can result in deduction denial and penalty payments.

Frequently Asked Questions

What is the IR exemption bracket amount in 2025?

For the 2024 calendar year (to be declared in 2025), the Income Tax exemption bracket is R$ 2,259.20 monthly or R$ 27,110.40 annually. Taxpayers with income up to this amount are exempt from tax payment.

How to calculate IR deduction from salary?

IR deduction from salary is calculated by applying the progressive table to gross income minus social security contributions (INSS). For example, for a R$ 4,000.00 salary with R$ 440.00 INSS deduction, the calculation base would be R$ 3,560.00, resulting in approximately R$ 89.20 monthly IR.

What are the main permitted deductions in IR 2025?

Main deductions include: dependents (R$ 2,275.08 annually each), health expenses (no limit), education (up to R$ 3,561.50 per person), mandatory social security contributions, PGBL contributions (up to 12% of gross income), and court-ordered alimony.

When should I file the 2025 Income Tax return?

The 2025 IR return (referring to the 2024 calendar year) must be filed between March and May 2025. Exact dates are announced by the Federal Revenue Service at the beginning of the year. Filing is mandatory for those who had taxable income exceeding R$ 30,639.90 in 2024.

What happens if I don’t file my Income Tax return?

Not filing the return by the deadline results in a minimum fine of R$ 165.74, which can reach 20% of the tax due. Additionally, your CPF becomes irregular, preventing you from obtaining certificates, opening bank accounts, obtaining financing, and other services requiring tax compliance.

How do I know if I’m entitled to an IR refund?

You’ll be entitled to a refund if the tax withheld at source during the year exceeds what’s calculated in the annual return. This happens when there are many deductions (dependents, medical expenses, educational expenses) that weren’t considered in the monthly salary deduction.

Can I installment the tax due in my return?

Yes, the tax due can be paid in up to 8 installments, with a minimum installment of R$ 50.00. The installment amount is subject to interest equivalent to the monthly accumulated Selic rate. Payment in full must be made by the return deadline to avoid fines and interest.