Tax preparation: complete checklist of documents needed to declare income tax in 2026

The Annual Personal Income Tax Adjustment Declaration (DIRPF) constitutes one of the most complex and rigorous tax obligations in the Brazilian tax system. For the year 2026, which comprises the financial and asset movements of the calendar year 2025, the Brazilian Federal Revenue Service (RFB) tends to intensify the crossing of digital data. In this context, the accuracy of the information provided depends exclusively on the quality and integrity of the documentation gathered by the taxpayer. The absence of adequate documentary support not only makes it impossible to complete correctly, it also exposes the declarant to fines and registration inconsistencies.

The logic of tax proof

The Income Tax declaration process is not just an act of reporting earnings, but an accounting procedure for reconciling the variation in assets and the income earned. The Federal Revenue system operates under the logic of data crossing: paying sources (companies, banks, brokers, real estate agencies) inform the tax authorities how much they paid to the taxpayer or how much they received from him. The declarant’s role, therefore, is to validate this information.

For IR 2026, documentation serves three fundamental purposes:

• Proof of Income: Demonstrate the legal origin of the resources that justify the standard of living and the increase in assets.
• Validation of Deductible Expenses: Reduce the tax calculation base legally, requiring robust proof of spending on health, education and pensions.
• Asset Traceability: Justify the purchase, sale or maintenance of goods and rights.

Failure to present documents or discrepancies in cents between the official document and the data entered into the generating program is the main vector of retention in the tax network.

Categorization of required documents

To ensure compliance, it is essential to follow a complete checklist of documents required to declare the 2026 income tax, segmented by the nature of the tax information. The organization must reflect events that occurred between January 1 and December 31, 2025.

General and personal information

These data form the registration basis of the declaration.

• Taxpayer details: Copy of the previous year’s declaration (IR 2025/base year 2024), updated bank details for refund and current address.
• Dependents and feeders: Full name, CPF (required for all ages) and date of birth of all dependents included.

Proof of income (income reports)

This is the most inspected category, as it involves direct cross-checking with the DIRF (Declaration of Income Tax Withheld at Source) sent by companies.

• Salaried income: Income report provided by the employer (salaries, 13th, vacation, PLR).
• Financial institutions: Reports from banks and brokers containing balances in current accounts, savings accounts and financial investments.
• Retirement and pensions: Proof of INSS or your own public pension schemes.
• Other income:
  • Proof of receipt of rent (reports from real estate agencies or proof of deposits from individuals).
  • Proof of alimony received (court decision and extracts).
  • Invoices for services provided (for self-employed people) and proof of payment of the Carnê-Leão (DARFs paid in 2025).

Documentation of assets and rights

Fundamental to avoid “uncovered equity variation”.

• Properties: Deeds, purchase and sale contracts, and proof of renovations (invoices for materials and labor) carried out in 2025 to make up the acquisition cost.
• Vehicles: Renavam and purchase or sale documents that occurred in the base year.
• Variable Income:
  • Brokerage notes for stock exchange operations.
  • Cryptoactive statements (national and international exchanges).
  • Monthly control of profits/losses and variable income DARFs paid throughout the year.

Proof of payments and deductions

Documents that reduce the tax payable must contain the provider’s CNPJ/CPF, signature and detailed value.

• Education: Receipts from schools, colleges and postgraduate studies (of the holder and dependents).
• Health: Invoices from hospitals, clinics, laboratories, doctors, dentists, psychologists and physiotherapists. Health plans require an annual report from the operator.
• Private Pension: Report on contributions to PGBL (Free Benefit Generating Plan).
• Alimony: Proof of payment and the court ruling or public deed that determined the amount.

Scanning and the pre-filled declaration

The current tax administration scenario points to a drastic reduction in manual filling. For IR 2026, the Federal Revenue Service will further consolidate the use of pre-filled declarations. Access to this functionality requires the taxpayer to have a gov.br account at the Silver or Gold levels.

Although pre-filling imports various data, possession of physical or digital documents (PDFs) remains mandatory. The responsibility for the veracity of the data lies entirely with the taxpayer. If the system imports an incorrect value for a medical expense and the taxpayer does not correct it based on the original receipt, they will be penalized. Therefore, the documentary checklist serves as an audit tool for the government’s own database before final submission.

FAQ

1. How long should I keep IR 2026 documents?
   The legislation requires that receipts be kept for at least five years from the first day of the year following the processing of the declaration. For durable assets (real estate), documents must be kept indefinitely until the asset is sold, to calculate capital gains.
2. Does the Pix statement serve as proof of medical expenses?
   Not in isolation. The bank statement or Pix receipt only certifies the financial transfer. For tax deduction purposes, it is mandatory to present an Invoice or Receipt containing the details of the provider, the beneficiary of the service and a description of the service.
3. Do I need documents to declare cryptocurrencies?
   Yes. Although there are no standardized “reports” like in traditional banks, you must extract the transaction history from exchanges and keep control of the average acquisition cost. National exchanges report movements to the Revenue (IN 1888), which requires precision in the data declared.

Meticulous organization, based on a complete checklist of documents required to declare income tax in 2026, is the most effective strategy to ensure fiscal health. Anticipating the collection of these records, preferably throughout the year 2025 and not just during the delivery period, allows the identification of pending issues and the rectification of incorrect reports with paying sources before sending them to the tax authorities.

Disclaimer: This content is informative and educational in nature and does not constitute accounting or legal advice. Tax rules are subject to legislative changes. It is recommended that you consult a qualified accountant or tax professional to analyze specific cases.