Keep five things, every year: your tax P&L statement, your contract notes, your account ledger, capital-gains statements for any mutual funds, and your dividend records. Together they prove every number in your return, and each one is downloadable, so this is mostly a habit, not a chore.
What does each record actually prove?
Think of the set as answers to the questions a tax officer could ask.
The tax P&L statement is the master summary. Your year's results split into capital gains, intraday and F&O income, trade-wise, matching what a tax P&L statement contains. Download it from tax P&L reports after every financial year, whether or not you made money: a loss year's report is what supports the carry-forward claim in your return.
Contract notes are the legal record of each individual trade, instrument, price, time, and every charge levied. If a single figure in your return is ever questioned, the contract note is the primary evidence behind it. What a contract note is explains how to read one; they arrive by email after every trading day, and filing them into a yearly folder as they come takes seconds.
The ledger is your money trail. Every credit, debit, charge and fund movement in your trading account. It reconciles your bank statements with your trading activity, which matters when the tax department's data matches deposits against declared income. See where to download your ledger report.
Capital-gains statements for mutual funds do for fund redemptions what the tax P&L does for stocks, lot-wise gains with holding periods. If you hold funds, pull the mutual fund capital gains report too.
Dividend records close the loop on income that arrives quietly. Bank credits, the dividend entries in your annual information statement on the income-tax portal, and any TDS certificates. Together they let you declare the right total and claim the right TDS credit.
Traders reporting business income should add one more layer: bills and proofs for every expense claimed against trading income, internet, subscriptions, advisory fees, depreciation workings for a laptop.
How long should I keep all this?
Longer than instinct suggests. The income-tax department can reopen past assessments years after filing. The reopening window varies with the amount involved and has been revised over time. A widely followed rule of thumb is to keep everything for at least eight years after the relevant financial year; treat that figure as a convention to verify, not a statutory promise, and when in doubt simply keep the folder. Digital copies are fine and cost nothing to retain.
What does a workable system look like?
Farhan's method is unglamorous and works: one cloud folder per financial year, five subfolders (tax P&L, contract notes, ledger, mutual funds, dividends), fed twice, contract notes filed as they arrive, everything else downloaded in the first week of April. When his tax professional asks for documents, the answer is one shared link.
Things to keep in mind
- Download year-end reports soon after 31 March each year, while the year is fresh. Do not wait for filing season.
- Keep loss-year records with the same care as profit-year ones; they defend your carry-forwards.
- Reconcile your records against the annual information statement on the tax portal before filing, and keep a copy of what you reconciled.
- Retention periods and reopening windows are set by law and change. Verify the current position, and keep records longer when in doubt.
Read next
How is F&O trading taxed? — The trading style whose paperwork depends most on the records you kept.