Filing Income Tax Return (ITR) for FY 2025-26 requires taxpayers to maintain various documents such as PAN, Form 16, Form 26AS, Annual Information Statement (AIS), Taxpayer Information Statement (TIS) and other deduction proofs. These documents help verify income, taxes paid, and eligible deductions while filing the return.
Additionally, NRE and NRO account details, residency certificate, income proofs, and books of accounts are required for ITR filing. Keeping these documents ready ensures accurate filing and helps avoid notices or discrepancies during processing.
The due date to file ITR for FY 2025-26 (AY 2026-27) is as follows:
| Income Tax Return | Due Date |
| ITR-1 & ITR-2 | 31st July 2026 |
| ITR-3 & ITR-4 (Non-Audit) | 31st August 2026 |
| ITR-3 & ITR-4 (Tax Audit) | 31st October 2026 |
| Belated Return | 31st December 2026 |
Any taxpayer, must ensure to have the following documents while filing an ITR:
| Document Name | Why Is It Required | Where to Get It |
| Form 16 | Shows salary income and TDS deducted by employer | Employer |
| Form 26AS | Consolidated tax statement of TDS, TCS, and advance tax | Income Tax Portal |
| Annual Information Statement (AIS) | Detailed view of all financial transactions | Income Tax Portal |
| Taxpayer Information Statement (TIS) | Summarised version of AIS for easier reporting | Income Tax Portal |
| Bank Statements | To verify interest income, transactions, and refunds | Bank or Net Banking |
| Investment Proofs (80C, 80D, etc.) | To claim deductions and reduce taxable income | Financial Institution or Insurance provider |
| Salary Slips | Breakdown of salary components and allowances | Employer |
| Home Loan Statement | To claim interest and principal deductions | Bank or NBFC |
| Capital Gains Statements | Required for reporting gains from shares, mutual funds, property | Broker, AMC, or Registrar |
| NRE or NRO Account Details | For reporting foreign income and interest | Bank |
| Rent Receipts | To claim HRA exemption | Self-maintained or Landlord |
| Books of Accounts | Mandatory for business or professional income reporting | Self-maintained |
| Other Income Proofs | Covers FD interest, dividends, freelance income, etc. | Banks, Companies or Clients |
If you are a salaried employee, gather these documents to e-file your income tax returns in India. Go through this list to see the documents you’ll need to do your taxes.
It is essential to gather information on all taxable allowances received and the amount claimed as an exemption from such allowances, e.g., house rent allowance, leave travel allowance, etc., and disclose the same in the IT return.
Taxpayers who are self-employed, freelancers or business owners should ensure that following documents are available while filing ITR:
Capital gain includes proceeds from the sale of immovable properties such as land, building, house etc, also includes shares, debentures, mutual funds, jewellery etc., irrespective of gain or loss, the transactions must be reported.
2. For Sale of Mutual funds or Equity shares:
Gathering the details mentioned below is necessary in order to provide complete and truthful disclosure of your income from house property.
The following documents are important when taxpayers want to report incomes from interest, dividend or from any other income sources:
Taxpayers who have tax savings investments and claiming deductions have to ensure availability of following documents for proof of investment to claim deduction:
NRIs must maintain specific documents while filing their ITR in India to accurately report income earned or accrued in India:
The new tax regime and old tax regime follow different tax structure with respect to income tax slabs, deductions and exemptions allowed to a taxpayer. Hence, the documents required to be maintained depends on the tax regime opted by the taxpayer.
The new tax regime disallows most of the deductions such as Section 80C, 80D, and salary exemptions. Therefore, taxpayers opting for the new tax regime need not require such document proofs to claim these deductions and exemptions.
The following documents will apply and is required to be maintained irrespective of the tax regime opted by the taxpayer:
Which tax regime is better for the taxpayer is totally dependant on the income, deductions and exemptions that a taxpayer can claim. Taxpayers with high deductions and exemptions to claim can opt for the old tax regime if it saves more tax. However, taxpayers with less or no deductions and exemptions to claim should opt for the new tax regime.
Form 26AS is summary if tax deducted and collected. This document helps taxpayers determine the total TDS or TCS paid by them during the year which can be set-off against the final tax liability. Any excess TDS or TCS can be claimed as tax refund, but a self-assessment tax need to be paid when there is a shortfall in TDS or TCS compared to the final tax liability.
The Annual Information Statement or AIS shows both reported value (value reported by the reporting entities) and modified value (i.e., the value after considering taxpayer feedback) for each type of information, i.e., TDS, Statement of financial transaction (SFT), and various other information.
Taxpayer Information Summary is an aggregated category-wise summary for a taxpayer. It shows the processed value (i.e., value generated after cleaning the data gathered from various sources) and derived value (i.e., value derived after considering the taxpayer’s feedback) for each information category. The derived information in TIS is used for pre-filling IT returns.
The question of which ITR form to file depends on the income source of the taxpayer.
| ITR Form | Who Should File | Key Documents Needed |
| ITR-1 (Sahaj) | Salaried, income less than Rs. 50 lakh | Form 16, 26AS, bank interest |
| ITR-2 | Capital gains, multiple properties | Broker statement, sale deeds |
| ITR-3 | Business or profession income with capital gains | P&L, balance sheet, GST returns |
| ITR-4 (Sugam) | Presumptive taxation income, income less than Rs. 50 lakh | Bank statements, 26AS |