Income Tax Return Filing for Proprietorship Firms: Forms, Documents and Process

There Is No Proprietorship Return

A sole proprietorship is not a separate taxable entity. The business income is the proprietor’s income, taxed at individual slab rates in the proprietor’s own return. That single fact answers most of the questions people have about proprietorship tax filing: there is no separate PAN, no entity-level rate, and no separate return. There is one return, with business income in it.

Which form

ITR-4, where you opt for presumptive taxation under Section 44AD for business or 44ADA for a specified profession, and meet the conditions including the income limit.

ITR-3, where presumptive taxation does not apply or you choose not to use it, which means regular books, a profit and loss account and a balance sheet in the return.

A proprietor with only salary and no business income would file ITR-1 or ITR-2. Once there is business income, the form changes.

Presumptive taxation, and why most small proprietors use it

Under Section 44AD, an eligible business can declare a prescribed percentage of turnover as income, with a lower percentage for digital receipts, and keep no detailed books.

Under Section 44ADA, a resident individual in a specified profession can declare 50 per cent of gross receipts as income.

Sources report the 44ADA receipts limit at Rs 75 lakh where cash receipts are within the prescribed small proportion, and Rs 50 lakh otherwise, and refer to a turnover threshold for 44AD with a similar digital-receipts distinction.

Verify the current limits for both before relying on them. They have been raised and the conditions attached to the higher limit matter.

The appeal is obvious for a business with low real expenses. The cost is that you are taxed on the presumed figure even if your actual margin was lower, and there are consequences for opting out after opting in.

The due dates

The 31 August date is new. Sources report the Finance Act 2026 moved non-audit ITR-3 and ITR-4 from 31 July to 31 August, permanently from AY 2026-27. A proprietor working from last year’s calendar will be a month out.

When audit applies

Tax audit under Section 44AB is triggered by turnover or receipts crossing the prescribed thresholds, with a higher threshold where cash transactions are within a small proportion, and in certain cases where presumptive taxation is declined.

Verify the current thresholds. They have changed more than once and sources state them inconsistently.

Where audit applies, the audit report is due before the return, and the return date moves to the audit date.

Documents

• Bank statements for all business accounts

• Sales and purchase records, or receipts if presumptive

• Form 26AS and the Annual Information Statement

• TDS certificates

• GST returns, which should reconcile to the turnover declared

• Fixed asset details and depreciation workings, if not presumptive

• Loan statements, for interest claimed

The GST reconciliation matters. Turnover declared in the income tax return and in GST returns is compared, and a difference is a standard enquiry.

How Northrop LLP helps

Northrop LLP works out whether presumptive taxation is actually cheaper for you, reconciles turnover to GST, and files the return on the correct date for your case.

Service page: [Verified Northrop LLP Service URL Required]