A category-wise document checklist for filing your income tax return for FY 2026–27 — what every taxpayer needs, and the extra documents required for salary, capital gains, business income, house property and foreign income.
Most filing errors are not errors of law. They are omissions — a bank interest certificate nobody downloaded, a capital gains statement that arrived after the return was filed, a deduction claimed without the receipt behind it. This checklist is organised by what kind of income you have, so you can collect once and file once.
Start with the department's own record of you. Before gathering anything else, download your Annual Information Statement and your tax credit statement from the e-filing portal. They show what the department already knows: interest credited, dividends, securities transactions, property registrations, large cash deposits. Your return should explain everything on that statement. A mismatch is the single most common trigger for a notice.
Every Taxpayer Needs These
- PAN, and Aadhaar linked to it.
- A pre-validated bank account for any refund, with the correct IFSC.
- The Annual Information Statement and Taxpayer Information Summary from the portal.
- The consolidated statement of tax credit, showing tax deducted and collected on your behalf.
- Challans for any advance tax or self-assessment tax you paid.
- Last year's filed return, for carried-forward losses and for comparison.
If You Are Salaried
- The certificate of tax deducted from salary issued by your employer.
- Salary slips for the year, if you need to verify any component.
- Rent receipts and the landlord's PAN, where annual rent exceeds one lakh rupees, for a house rent allowance claim.
- Interest certificate on a housing loan, split between principal and interest.
- Proof of deduction-linked investments and payments under section 123, the successor to section 80C.
- Health insurance premium receipts, for the deduction that was section 80D.
Changed jobs during the year? Get a certificate from every employer. If the second employer was not told about the first employer's salary, each will have applied the basic exemption and the standard deduction separately, and you will have been under-deducted. Expect a balance to pay at filing, and pay it as self-assessment tax before you submit.
If You Have Capital Gains
- A capital gains statement from your broker or registrar, covering equity, mutual funds and bonds.
- For property: the sale deed, the purchase deed, and proof of any improvement cost.
- Evidence of the fair market value as on 31 January 2018 for listed equity acquired before that date, which is the grandfathering reference under section 197.
- Evidence of the cost of acquisition and the date of acquisition — the holding period determines the rate.
- Details of any reinvestment for which you are claiming a rollover exemption, with the deposit account particulars if the reinvestment is not complete.
If You Have Business or Professional Income
- Balance sheet and profit and loss account, audited where section 63 requires it.
- The audit report, where applicable, furnished by the specified date under section 63(5)(a).
- Summary of GST returns for the year, reconciled to turnover as booked.
- Certificates of tax deducted by your customers.
- The fixed asset register and depreciation working.
- Stock valuation as at 31 March.
- If you are declaring on a presumptive basis under section 58 or 61, gross receipts split between banking-channel and cash receipts, because the deemed rate differs.
If You Own House Property
- Municipal tax paid during the year, which is deductible only when actually paid.
- Interest certificate on the housing loan.
- Rent agreement and rent received, for a let-out property.
- Co-ownership share, where the property is jointly held.
If You Are a Non-Resident or Have Foreign Income
- Passport, with the entry and exit stamps that establish your day count.
- A residency computation for the year, since residence drives the whole return.
- Foreign bank account, asset and income details, which must be disclosed.
- A tax residency certificate and the associated declaration, if you are claiming treaty relief.
- Evidence of foreign tax paid, for a foreign tax credit claim.
Foreign asset disclosure is not optional and not tied to whether tax is due. A resident and ordinarily resident taxpayer must disclose foreign assets and financial interests even where they produce no income and even where the return is otherwise a nil return. The consequences of omission sit outside the Income-tax Act altogether, under the black money legislation.
Before You Submit
- Reconcile every entry in the Annual Information Statement to a line in your return, and record why any entry you are not offering to tax is not taxable.
- Check that tax deducted, as claimed, matches the consolidated credit statement to the rupee.
- Compare your liability under the concessional regime in section 202 against the regime with deductions, and choose deliberately.
- Pay any balance as self-assessment tax before submitting, so interest stops running.
- Verify the return. An unverified return is not a filed return.