ITR Filing Checklist: Documents You Need Before You File

Why the checklist matters more than it used to

Income tax filing in India used to be a declaration. It is now largely a reconciliation. The department already receives detailed reporting from banks, employers, brokers, mutual fund registrars, property registrars and credit card issuers, and it assembles that into your Annual Information Statement before you file anything.

The practical consequence is that a return which does not agree with the department's own data will be queried, regardless of whether your figures are correct. Gathering the right documents first is therefore not administrative tidiness — it is the difference between filing once and spending the following year explaining yourself.

1. Identity and access

• PAN, and Aadhaar linked to that PAN
• Income tax portal login credentials (reset before filing season rather than at the deadline)
• Bank account details for refund — account number and IFSC, pre-validated on the portal, with your name matching the PAN records
• Mobile number and email registered on the portal, since e-verification depends on them

2. The three statements to download first

Before you look at a single receipt, download these. They tell you what the department already believes about your year.

1. Form 26AS. The tax credit statement — TDS deducted on your income, advance tax and self-assessment tax you paid, and refunds issued. Any TDS you intend to claim must appear here.
2. Annual Information Statement (AIS). The comprehensive picture: salary, interest, dividends, securities transactions, mutual fund purchases and redemptions, property transactions, foreign remittances and high-value spending.
3. Taxpayer Information Summary (TIS). A condensed, category-wise version of the AIS showing the processed value the department will work from.

Read the AIS before you file, not after. If something in it is wrong — a transaction that is not yours, a duplicate entry, a sale reported at the wrong value — the portal has a feedback mechanism for exactly that. Submitting feedback creates a record that supports the position you take in the return.

3. Salary and employment

• Form 16 Part A and Part B from every employer for the financial year — if you changed jobs, you need one from each
• Monthly salary slips, particularly for the months around a job change
• Rent receipts and the landlord's PAN where HRA claimed exceeds the reporting threshold
• Leave travel allowance bills and boarding passes if LTA is being claimed
• Details of any ESOPs exercised, or shares allotted under an employee stock plan, with the valuation and perquisite figures
• Gratuity, leave encashment or retirement benefit statements if you left employment during the year

The most common salaried error we correct: a person who changed jobs mid-year gives the new employer no details of previous salary. The new employer applies the basic exemption and deductions afresh, both employers under-deduct, and the shortfall surfaces as a demand at filing. Always aggregate both Form 16s.

4. Bank interest, dividends and other income

• Savings account interest for every account — not just the main one
• Fixed and recurring deposit interest certificates, including deposits held for family members where the income is clubbed to you
• Dividend statements from companies and mutual funds
• Interest on bonds, debentures, PPF (exempt but reportable in some returns) and small savings schemes
• Any professional or freelance receipts outside your main employment
• Gifts received above the prescribed threshold from persons who are not relatives

Interest income is the most consistently under-reported item on Indian returns, usually not from evasion but from forgetting a dormant account. It appears in your AIS regardless.

5. House property

• Home loan interest and principal repayment certificate from the lender, showing the split
• Municipal tax paid receipts for let-out property
• Rent agreement and rental income received for each let-out property
• Co-ownership details with the ownership percentage, where the property is jointly held
• Possession or completion certificate where pre-construction interest is being claimed

6. Capital gains

• Broker's capital gains statement for equity shares, showing short-term and long-term separately
• Mutual fund capital gains statement from the registrar or a consolidated account statement
• Purchase and sale deeds for property, with the stamp duty value
• Form 16B where TDS was deducted by the buyer on a property sale
• Improvement cost evidence — bills for construction, renovation or additions
• Reinvestment evidence where exemption is being claimed, including capital gains account scheme deposit details

Property and securities transactions are reported to the department by the registrar and the exchange respectively. There is no version of a return where omitting them goes unnoticed. Where a large gain is expected, the planning should happen before the sale — see our investment and tax advisory service.

7. Deduction and exemption proofs

These matter only if the old regime is better for you — under the new regime most of them do not reduce your tax at all. Gather them anyway, so that the comparison can be run properly.

• Life insurance premium receipts, PPF passbook, ELSS statements, NSC certificates, five-year tax-saving fixed deposits
• Children's tuition fee receipts
• Home loan principal repayment (part of the same section 80C limit)
• Health insurance premium receipts for yourself and for parents, and preventive health check-up bills
• NPS contribution statement, distinguishing your own contribution from the employer's
• Education loan interest certificate
• Donation receipts with the recipient's PAN and 80G registration details — see how 80G approval works
• Disability or specified-illness certificates where those deductions are claimed

8. Business and professional income

• Books of account, or the summary needed for presumptive taxation under sections 44AD or 44ADA
• Profit and loss account and balance sheet
• GST returns filed for the year — turnover here must reconcile with the return, as covered in our GST return filing guide
• TDS certificates in Form 16A received from clients
• Fixed asset additions and disposals with invoices, for the depreciation schedule
• Tax audit report where turnover crosses the section 44AB threshold — handled under our accounting and assurance service

9. Foreign assets and income

If you hold foreign bank accounts, foreign shares including vested RSUs in an overseas parent company, or any financial interest outside India, these must be disclosed in the foreign asset schedule. Disclosure is required even where the asset produced no income and even where no tax is payable. The penalty regime under the black money legislation for non-disclosure is severe and disproportionate to the sums often involved, so this is not a schedule to skip.

The mismatches that generate notices

• TDS claimed but not in 26AS — usually a deductor error. Get it corrected at source; claiming it anyway produces a demand.
• Interest income omitted but present in AIS.
• Securities transactions in AIS not reflected in the capital gains schedule.
• Two Form 16s not aggregated after a job change.
• HRA claimed without landlord PAN where the rent exceeds the threshold.
• Business turnover in the return not agreeing with GST returns filed for the same period.
• Return not e-verified within the permitted window — an unverified return is treated as not filed at all, which surprises people every year.

This article is general guidance current as at the date of publication and is not advice on your specific facts. Thresholds, regimes, forms and due dates change from year to year. Please take advice on your own position before acting.