How to File Your Income Tax Return in 2026: Step-by-Step Guide
Every year, millions of people face the same challenge: opening the tax authority’s program, staring at dozens of fields, and not knowing where to start. Filing your income tax return is an obligation that can seem intimidating, but with proper organization and correct information, it becomes much simpler than it appears. Ignoring it or doing it wrong, however, can be costly — in fines, interest, and the dreaded tax audit.
In 2026, the declaration process continues through the declaration generator program (PGD), available on the Federal Revenue Service website, and also through the My Income Tax app, accessible via mobile or the e-CAC portal. The general rules for income tax have remained the same for many years, but details such as exemption brackets, deduction limits, and the 2025 tax year calendar need to be checked directly on the Federal Revenue Service website (receita.fazenda.gov.br), as they are updated each year.
This guide was written to help you understand the process from start to finish — who must file, what documents to gather, how to fill out each section, and how to avoid the most common mistakes. Let’s get started.
Who Must File in 2026?
The requirement to file income tax in 2026 (for the 2025 tax year) is determined by a series of criteria established by the Federal Revenue Service. You must file if you meet at least one of the situations below:
- You received taxable income (salaries, rent, retirement, etc.) above the annual exemption limit defined by the tax authority for the 2025 tax year — check the exact updated amount at receita.fazenda.gov.br
- You received tax-exempt, non-taxable, or exclusively source-withheld income above R$ 40,000.00
- You earned capital gains from the sale of assets or conducted securities trading operations (B3)
- You held assets or rights totaling more than R$ 300,000.00 on 12/31/2025
- You became a resident of Brazil in any month of 2025 and remained in that status until 12/31/2025
- You conducted rural activity with gross revenue above the established limit
Even if not required, filing may be advantageous — for example, if you had income tax withheld at the source and are entitled to a refund. In that case, voluntary filing is permitted.
Documents You Need to Gather Before Starting
Before opening any program, gather all your documentation. This is the most time-consuming step and also the most important for avoiding errors and omissions.
Basic documents
- Tax ID and personal data for the taxpayer and dependents
- Voter registration (may be required in some situations)
- Banking information for refund (bank, branch, account)
Income statements
- Income statement from employer (companies must provide by end of February)
- Income statements from financial institutions (banks, brokers)
- Income statement from Social Security, if retired or pensioner
- Proof of rent received or paid
Deductible expenses
- Receipts for health insurance (taxpayer and dependents)
- Invoices and receipts for medical, dental, psychological consultations, and hospital services
- Proof of payment of court-ordered child support
- Receipts for school and college tuition (up to the annual limit defined by the tax authority)
- Proof of Social Security contributions for domestic employees
Assets and rights
- Documents of purchase and sale of real estate, vehicles, or any asset above R$ 5,000.00
- Statements of financial applications, investment funds, and private pension plans (PGBL/VGBL)
How to Download and Access the Program
- Access the Federal Revenue Service official website: receita.fazenda.gov.br
- In the “Individual” area, locate the 2026 Income Tax section
- Download the Declaration Generator Program (PGD) compatible with your operating system (Windows, Mac, or Linux) or use the My Income Tax app on your mobile device
- Install the program and open a new declaration
- If you filed in previous years, you can import data from your last declaration to make filling easier — the program itself offers this option
> Important tip: use only the Federal Revenue Service official website to download the program. Never install apps from unknown sources, as there are scams that simulate the income tax program to steal personal data.
Filling Out the Declaration: Step by Step
Step 1 — Identification
Fill in your personal information: name, tax ID, date of birth, current address, and spouse information (if applicable). Also inform whether you hold an overseas bank account or are a business partner.
Step 2 — Taxable Income
Enter the amounts shown in your income statement. This includes salaries, management fees, rent received, retirement pensions, and annuities. The amount of income tax withheld at the source should be reported here too — this is what can generate your refund.
Step 3 — Tax-Exempt and Non-Taxable Income
Include income such as: FGTS withdrawals, indemnities, profits and dividends received from companies, savings account income, and 13th-month salary (exclusively withheld at source, goes in a specific field).
Step 4 — Deductions
This is one of the most important sections to legally reduce the tax you owe. You can choose between:
- Simplified declaration: applies a standard discount (percentage of taxable income, with a limit set by the tax authority) without needing to prove expenses
- Complete declaration: you report all deductible expenses individually; can be more beneficial if you have many medical expenses or dependents
The program itself calculates which option is more beneficial for you — simply switch between the two and compare.
Step 5 — Assets and Rights
Declare all assets you owned on 12/31/2024 and on 12/31/2025. The reported value is the acquisition cost, not the current market value. This includes real estate, vehicles, financial investments, business stakes, and bank accounts with balances above R$ 140.00.
Step 6 — Debts and Liens
Report debts above R$ 5,000.00, such as mortgage loans, personal loans, and active consortiums.
Step 7 — Review and Submission
Before transmitting, use the “Check Pending Items” function in the program. It flags unfilled required fields or inconsistencies. After correcting everything, click “Submit Declaration” — you will receive a receipt number that you must keep safe.
Deadlines and Penalties: Don’t Leave It for the Last Minute
The Federal Revenue Service usually opens the filing period in March and closes in April or May. Check the exact 2026 income tax calendar on the official website, as deadlines are announced early in the year.
Those who file after the deadline pay a minimum fine of R$ 165.74, which can reach 20% of the tax owed, depending on the delay. Additionally, omissions or incorrect information can lead to an audit — when the tax authority identifies inconsistencies and calls on the taxpayer to provide clarification or pay the difference with corrections.
To organize your finances throughout the year and make the next filing easier, a good strategy is to maintain detailed control of your expenses. See how to do this in How to set up your monthly expense spreadsheet.
Most Common Mistakes and How to Avoid Them
| Mistake | How to Avoid |
|---|---|
| Not declaring all income | Request income statements from ALL payers |
| Reporting market value of assets | Always use the original acquisition cost |
| Forgetting financial investment income | Request statement from broker or bank |
| Not keeping medical expense receipts | Keep them for at least 5 years after filing |
| Claiming the same dependent twice | Each dependent can only appear on one return |
| Not checking banking details for refund | Review branch and account before submitting |
Refunds, Taxes Owed, and Payment Plans
If the income tax withheld during 2025 was greater than the tax calculated in your declaration, you are entitled to a refund — the tax authority returns the difference in batches, paid between June and December 2026, with Selic rate adjustment. The earlier you file, the greater your chance of receiving an early batch.
If the calculated tax is greater than the amount withheld, you will owe a balance. You can split it into up to 8 installments (with minimum installments of R$ 50.00), but interest and penalties will be charged on the amount. The first installment is due with the final filing deadline.
To understand how to legally reduce your tax burden throughout the year, it’s worth learning about tax planning strategies: How to Pay Less Tax Legally: Complete Guide to Tax Planning in 2026.
Conclusion
Filing your income tax return doesn’t have to be a nightmare. With advance organization, documents in hand, and attention to detail, the process flows much better. The secret lies in preparation throughout the year: keep receipts for medical, education, and donation expenses; request income statements as soon as they become available; and never leave it until the last week of the deadline.
Always remember to check the updated rules and amounts directly on the Federal Revenue Service website (receita.fazenda.gov.br), as exemption limits, tax brackets, and deduction caps may be adjusted each year. Filing correctly and submitting on time is an act of tax responsibility — and also protection for your own wallet.
This article is exclusively educational and informational in nature. It does not constitute investment recommendations, legal advice, or personalized tax consulting. For specific situations — especially involving capital gains, securities trading, inheritances, or complex income — consult a certified accountant, tax attorney, or advisor registered with the CVM.
