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AY 2026-27 | FY 2025-26
Income Tax Return Filing for Sole Proprietorship
Complete guide on ITR form selection, due dates, tax slabs, documents, and step-by-step online filing process for AY 2026-27.
File ITR Now — Get Expert HelpWhat is Income Tax Return Filing for Sole Proprietorship?
A sole proprietorship is not a separate legal entity — the business and the owner are treated as one and the same for taxation purposes. This means the income earned by the business is treated as the personal income of the proprietor and taxed at individual income tax slab rates.
Filing an Income Tax Return (ITR) for a sole proprietorship means reporting the business's profit and loss, combined with any other income sources of the proprietor, under the proprietor's own PAN. For Assessment Year 2026-27 (covering income earned in Financial Year 2025-26), every sole proprietor whose income exceeds the basic exemption limit must file an ITR.
Key fact for AY 2026-27: The ITR for income earned during FY 2025-26 is governed by the Income Tax Act, 1961, even though filing occurs after 1st April 2026. Taxpayers must select AY 2026-27 on the e-filing portal.
Who Must File ITR for Sole Proprietorship?
A sole proprietor must file an ITR for AY 2026-27 if:
- Total income (business + other sources) exceeds the basic exemption limit of ₹2.5 lakh (old regime) or ₹3 lakh (new regime)
- The business has a turnover exceeding ₹60 lakh during FY 2025-26
- Tax has been deducted at source (TDS) and a refund is to be claimed
- The proprietor wants to carry forward business losses to future years
- The proprietor holds foreign assets or has foreign income
- The proprietor is a director in any company or holds unlisted shares
Which ITR Form Should a Sole Proprietor File for AY 2026-27?
Choosing the correct ITR form is critical. Filing the wrong form can make the return defective. For sole proprietors, two forms are applicable:
ITR-4 (Sugam)
For Presumptive Taxation
File ITR-4 if you opt for presumptive taxation under:
- Section 44AD — Business turnover up to ₹3 crore (95% digital receipts required for the higher limit)
- Section 44ADA — Specified professionals with gross receipts up to ₹75 lakh (doctors, lawyers, architects, engineers, CAs, etc.)
- Section 44AE — Transport vehicle owners
- Total income does not exceed ₹50 lakh
ITR-3
For Regular Books of Accounts
File ITR-3 if:
- You maintain regular books of accounts (income does not qualify for presumptive taxation)
- Total income exceeds ₹50 lakh
- You have capital gains income along with business income
- You receive remuneration from a partnership firm
- Your turnover exceeds the presumptive taxation threshold
Cannot use ITR-4 if: You have income from more than two house properties, you are a director in a company, you hold unlisted equity shares, you have capital gains (other than LTCG on equity up to ₹1.25 lakh), or if TDS has been deducted under Section 194N.
Income Tax Slabs for Sole Proprietor — AY 2026-27
Since a sole proprietor is taxed as an individual, the following tax slabs apply for AY 2026-27. The New Tax Regime is the default regime from AY 2024-25 onwards.
New Tax Regime (Default) — AY 2026-27
| Income Slab | Tax Rate |
|---|---|
| Up to ₹4,00,000 | Nil |
| ₹4,00,001 – ₹8,00,000 | 5% |
| ₹8,00,001 – ₹12,00,000 | 10% |
| ₹12,00,001 – ₹16,00,000 | 15% |
| ₹16,00,001 – ₹20,00,000 | 20% |
| ₹20,00,001 – ₹24,00,000 | 25% |
| Above ₹24,00,000 | 30% |
+ 4% Health & Education Cess on total tax. Rebate u/s 87A available up to ₹60,000 for income up to ₹12 lakh.
Old Tax Regime (Optional)
| Income Slab | Tax Rate |
|---|---|
| Up to ₹2,50,000 | Nil |
| ₹2,50,001 – ₹5,00,000 | 5% |
| ₹5,00,001 – ₹10,00,000 | 20% |
| Above ₹10,00,000 | 30% |
+ 4% Health & Education Cess. Surcharge applies on income above ₹50 lakh. Deductions under 80C, 80D etc. available.
Surcharge for AY 2026-27: 10% on tax if income is between ₹50 lakh and ₹1 crore | 15% if between ₹1 crore and ₹2 crore | 25% if between ₹2 crore and ₹5 crore | 37% if above ₹5 crore (old regime). Under the new regime, the maximum surcharge is capped at 25%.
ITR Filing Due Dates for Sole Proprietorship — AY 2026-27
| Category | Applicable Form | Due Date |
|---|---|---|
| Non-audit sole proprietors (business/professional income) | ITR-3 / ITR-4 | 31 August 2026 |
| Accounts subject to tax audit (u/s 44AB) | ITR-3 | 31 October 2026 |
| Transfer pricing cases | ITR-3 | 30 November 2026 |
| Belated return (after due date) | ITR-3 / ITR-4 | 31 December 2026 |
| Revised return | ITR-3 / ITR-4 | 31 March 2027 |
Late Filing Penalty u/s 234F: ₹5,000 if income exceeds ₹5 lakh | ₹1,000 if total income is up to ₹5 lakh. Interest u/s 234A also applies on outstanding tax liability.
Documents Required for Sole Proprietorship ITR Filing
Identity & Registration
- PAN Card of the proprietor
- Aadhaar Card linked to PAN
- GST Registration Certificate (if registered)
- Business registration/licence (if any)
Financial Documents
- Profit & Loss Account for FY 2025-26
- Balance Sheet as on 31 March 2026
- Bank statements (business and personal accounts)
- All sales invoices and purchase invoices
- Cash book and ledger (if regular books maintained)
Tax Documents
- Form 26AS (Tax Credit Statement)
- Annual Information Statement (AIS)
- Taxpayer Information Summary (TIS)
- TDS Certificates (Form 16A / 16B)
- Advance Tax Payment challans
- Self-Assessment Tax challans (if paid)
Compliance Documents
- GST Returns (GSTR-1, GSTR-3B) for FY 2025-26
- Tax Audit Report in Form 3CB-3CD (if audit applicable)
- Depreciation schedule (if assets held)
- Loan statements (business loans, if any)
How to File ITR for Sole Proprietorship Online — AY 2026-27
The Income Tax Department has opened ITR filing for AY 2026-27. Both online mode and offline utility (JSON upload) are available. Here is the complete step-by-step process:
- Collect and Organise All Documents Gather your P&L account, balance sheet, bank statements, Form 26AS, AIS, TDS certificates, and GST returns for FY 2025-26 before starting.
- Determine Your Applicable ITR Form Select ITR-4 if you qualify for and wish to opt for presumptive taxation (Sec 44AD/44ADA). Otherwise, use ITR-3.
- Choose Your Tax Regime Evaluate whether the Old Tax Regime (with deductions under 80C, 80D, etc.) or the New Tax Regime (lower slabs, no deductions) results in lower tax liability. File Form 10IEA if opting for the old regime.
- Login to the Income Tax E-Filing Portal Go to incometax.gov.in. Log in using your PAN and password. Navigate to e-File → Income Tax Returns → File Income Tax Return and select AY 2026-27.
- Fill in All Schedules and Income Details Enter business income (Schedule BP), other income sources, capital gains (if any), deductions claimed, TDS credits, and advance tax paid. Reconcile all TDS amounts with Form 26AS and AIS.
- Calculate Tax Liability and Pay Self-Assessment Tax After filling all details, compute the final tax liability. If any tax is payable after TDS/advance tax, generate a challan under Self-Assessment Tax (Code 300) and make the payment before submitting the return.
- Submit the Return and E-Verify Preview, confirm, and submit the ITR. E-verify immediately using Aadhaar OTP, Net Banking EVC, or Demat account EVC. Alternatively, send a physically signed ITR-V to CPC Bengaluru by speed post within 30 days of filing.
Tip: Always download and save the ITR-V acknowledgement (the purple form) after successful e-verification. This serves as proof of filing.
Presumptive Taxation for Sole Proprietors — Sec 44AD & 44ADA
Presumptive taxation is a simplified scheme that removes the need to maintain detailed books of accounts and makes ITR filing much easier for small business owners and professionals.
Section 44AD — For Businesses
- Eligible if total turnover does not exceed ₹3 crore (provided at least 95% of receipts and payments are through banking channels)
- Deemed profit: 8% of turnover (6% for digital receipts)
- No requirement to maintain books of accounts
- No tax audit required
- Advance tax payable in one instalment by 15 March 2026
- Not applicable for professionals, commission agents, or those with agency business
Section 44ADA — For Professionals
- Eligible for specified professionals: doctors, lawyers, architects, engineers, accountants, interior decorators, technical consultants
- Gross receipts must not exceed ₹75 lakh
- Deemed profit: 50% of gross receipts
- No books of accounts required
- No tax audit required
- If income declared is below 50%, tax audit becomes mandatory
Important: If a proprietor opts out of presumptive taxation in any year, they cannot opt back in for the next 5 assessment years. Opt-in and opt-out decisions must be made carefully.
Key Deductions Available to Sole Proprietors Under Old Tax Regime
If you opt for the old tax regime, the following deductions reduce your taxable income:
| Section | Deduction | Maximum Limit |
|---|---|---|
| 80C | PPF, ELSS, Life Insurance, NSC, School Tuition Fees, Home Loan Principal | ₹1,50,000 |
| 80D | Health Insurance Premium (self + family) | ₹25,000 – ₹1,00,000 |
| 80E | Interest on Education Loan | Full interest for 8 years |
| 80G | Donations to eligible charities/institutions | 50%–100% of donation |
| 80TTA | Interest on Savings Bank Account | ₹10,000 |
| 80CCD(1B) | Additional NPS Contribution | ₹50,000 |
| Business Expenses | Rent, salary, depreciation, utilities, professional fees, etc. | Actual (as per accounts) |
Note: Under the New Tax Regime, most deductions except 80CCD(2) (employer NPS contribution) and 80CCH are not available.
When is Tax Audit Mandatory for a Sole Proprietor?
Tax audit under Section 44AB requires a Chartered Accountant to audit the books and furnish the report in Form 3CB-3CD. It is mandatory in the following cases:
| Situation | Threshold |
|---|---|
| Business turnover exceeds | ₹1 crore (₹10 crore if 95%+ transactions are digital) |
| Professional gross receipts exceed | ₹50 lakh |
| Business declares income below 8% (or 6%) of turnover under Sec 44AD | Any turnover level |
| Professional declares income below 50% of gross receipts under Sec 44ADA | Any receipts level |
| Opted out of presumptive scheme in previous year and income exceeds basic exemption | Any turnover |
Audit due date for AY 2026-27: The audit report must be uploaded on the portal on or before 30 September 2026. The ITR itself is due by 31 October 2026.
Frequently Asked Questions (FAQs)
File ITR-4 (Sugam) if you opt for presumptive taxation under Section 44AD (turnover up to ₹3 crore) or Section 44ADA (gross receipts up to ₹75 lakh for professionals) and income does not exceed ₹50 lakh. Otherwise, file ITR-3 if you maintain regular books of accounts or have capital gains, multiple house property income, or total income above ₹50 lakh.
For non-audit cases, the due date is 31 August 2026. For proprietors whose accounts require a tax audit under Section 44AB, the due date is 31 October 2026. A belated return can be filed up to 31 December 2026 with a late fee.
Under the New Tax Regime (default), income up to ₹4 lakh is tax-free; ₹4–8 lakh at 5%; ₹8–12 lakh at 10%; ₹12–16 lakh at 15%; ₹16–20 lakh at 20%; ₹20–24 lakh at 25%; above ₹24 lakh at 30%. A 4% Health and Education Cess is levied on the total tax amount. Rebate under Section 87A of up to ₹60,000 is available for total income up to ₹12 lakh.
Yes. A sole proprietor can opt for the old tax regime to claim deductions under Section 80C, 80D, 80G, and other provisions. For AY 2026-27, the new regime is the default, but business income earners can switch between regimes once per year by filing Form 10IEA at the time of ITR filing.
GST registration and income tax return filing are independent obligations. GST registration is mandatory if annual turnover exceeds ₹40 lakh for goods (₹20 lakh for services). ITR must be filed if income exceeds the basic exemption limit regardless of GST status. However, GST turnover data may be cross-referenced by the Income Tax Department.
A late fee of ₹5,000 is levied under Section 234F if the return is filed after the due date (₹1,000 if total income is up to ₹5 lakh). Interest under Section 234A applies on outstanding tax at 1% per month. Additionally, the proprietor cannot carry forward business losses if ITR is filed late.
Tax audit under Section 44AB is mandatory if business turnover exceeds ₹1 crore (or ₹10 crore if 95%+ transactions are digital), or if professional gross receipts exceed ₹50 lakh. It is also required if the proprietor claims income below the presumptive rate under Sections 44AD or 44ADA.
Yes. A revised return can be filed under Section 139(5) to correct mistakes or omissions in the original ITR. For AY 2026-27, the deadline for filing a revised return is 31 March 2027 (as proposed in Finance Bill 2026), or before completion of assessment — whichever is earlier. A fee of ₹5,000 applies (₹1,000 for income up to ₹5 lakh).
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