Proprietorship ITR Filing (ITR-3 / ITR-4)

Income Tax Return Filing for Sole Proprietors and Individual Business Owners

Validity: Annual filing; valid for one assessment year

Getting your paperwork right the first time is the biggest factor in how fast proprietorship itr filing (itr-3 / itr-4) completes. Below is the complete document checklist — what's mandatory, what's situational, and how each item is used — so you can assemble everything before you begin.

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Documents Required

Items marked Required are mandatory; others are situational.

Business Income Documents

Bank statements for all business and personal accountsRequired
GST returns (GSTR-1 and GSTR-3B) for the financial yearRequired
Purchase invoices and sales invoicesRequired
Cash book and ledger if regular books maintained
Required for ITR-3 filers not under presumptive scheme

Tax and Identity Documents

PAN card of the proprietorRequired
Aadhaar card linked to PANRequired
Form 26AS and Annual Information StatementRequired
TDS certificates (Form 16A) from deductors

Deduction and Investment Proofs

Life insurance premium receipts, PPF passbook, ELSS statements
Home loan interest certificate if deduction under Section 24 claimed
Medical insurance premium receipts for Section 80D

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Tips to avoid delays

Keep digital copies (PDF or clear photos) of every document ready before you start.
Make sure names and addresses match exactly across all documents — mismatches are the single most common cause of rejection.
Use current, unexpired government-issued IDs, and have both originals and self-attested copies on hand.