Business ITR Checklist · AY 2026-27
A situation-based document checklist for proprietors, professionals, GST-registered businesses and online sellers filing income earned during FY 2025-26.
The short answer
Start with identity and profile details, the previous return, AIS, Form 26AS, tax challans, all business bank statements and complete sales or gross-receipts records. Then add the records required by your situation: detailed accounts for ITR-3, turnover evidence for ITR-4, GST returns if registered, platform reports for online selling, and evidence for other income or deductions.
Core checklist
Items marked “if applicable” are not required for everyone. Use records for FY 2025-26 unless the preparer specifically asks for an earlier year.
Never send an income-tax, GST, bank, marketplace or email password. Never forward an OTP. Export the requested records yourself and complete OTP-based verification personally.
Choose your situation
Even a simpler return needs reliable turnover evidence and an eligibility review.
Keep evidence of professional receipts and verify that the profession and form conditions fit.
The return may require figures from the balance sheet, profit and loss account and business schedules.
Audit, losses, multiple businesses, partners or complex income can require additional ledgers, confirmations and forms.
Business-model additions
Keep GSTR-1 and GSTR-3B for the year, GSTR-9 where applicable, GSTIN-wise summaries, credit notes and the books-to-GST reconciliation.
Reconcile GST and ITR turnover →Export order or sales reports, returns and cancellations, settlement reports, platform fee invoices and Section 194-O tax records.
Open the online-seller guide →Export website orders, Razorpay or other gateway settlements, COD remittances, refunds, chargebacks and fee invoices for all twelve months.
Get the gateway report list →Records that need context
They mix sales with loans, capital, transfers and refunds, and may not contain cash sales or unpaid invoices.
AIS is a valuable cross-check, not a complete profit and loss account. Review the source and use feedback where information is wrong.
It is essential for TDS and TCS-related data, but it does not replace the business's books or sales records.
GST figures need to be reconciled with the books; one return field should not be copied into the ITR without reviewing scope and timing.
Settlements are often net of fees, returns, shipping and TDS. Use detailed order and settlement reports.
It helps carry forward facts, losses and asset positions, but this year's return must be built from this year's actual records.
Simple preparation system
Profile, earlier return, tax records, bank, business records, and other income or deductions.
Check that statements and reports cover 1 April 2025 through 31 March 2026.
Name each file with the source and period so a missing month is obvious.
Mark loans, own transfers, capital introduced, refunds and personal transactions separately.
Compare books, GST, banks, platforms, AIS and Form 26AS and explain material differences.
Review the computation, file, e-verify personally and retain the final working and acknowledgement.
Common questions
Primary references
Last reviewed 3 August 2026. This is a preparation guide, not a universal statutory list. The final documents, return form, schedules, audit position and retention duties depend on the taxpayer's facts.
Start with the right list
Share your business type, approximate turnover, GST status and selling channels. We will identify the likely filing route and send a narrower checklist.