ITR for sole proprietors & partnerships

ITR for Sole Proprietors & Partnerships: The Complete FY 2026-27 Filing Guide

For FY 2026-27 (AY 2027-28), a sole proprietor with business income files ITR-3, or ITR-4 (Sugam) if eligible under a presumptive scheme (Sections 44AD or 44ADA). A partnership firm or LLP files ITR-5 — always. Partnership firms pay a flat 30% rate; proprietors choose between the old and new tax regimes each year. Non-audit filers must submit by 31 July 2027; audit cases by 31 October 2027. Choosing the wrong form, missing the Section 40(b) ceiling, or ignoring the GST-ITR turnover reconciliation are the three errors that generate the most notices and penalties in practice.

How Proprietorships and Firms Are Taxed — The Fundamentals

A sole proprietorship has no separate legal or tax existence. Every rupee of business profit — whether from a kirana store, a consulting practice, or a manufacturing unit — flows into the proprietor's individual return and is taxed at the applicable slab rates for that person. The proprietor owns all assets and liabilities, claims all deductions, and reports everything in a single ITR.

A partnership firm under the Partnership Act 1932, by contrast, is a distinct assessee. The Income-tax Act 1961 taxes the firm at a flat rate of 30% on its total income, with a 12% surcharge where total income exceeds Rs. 1 crore, and a 4% Health & Education Cess on the combined tax and surcharge amount. The partners are not taxed again on their share of profit — Section 10(2A) exempts this in their hands. However, remuneration and interest received from the firm are fully taxable in each partner's personal ITR as business income.

An LLP (Limited Liability Partnership) incorporated under the LLP Act 2008 is taxed identically to a general partnership for income-tax purposes: 30% flat plus applicable surcharge and cess. The LLP's limited-liability character is irrelevant to its tax treatment.

Which ITR Form to File: A Decision Map

Getting the form right is step one — a defective-return notice under Section 139(9) is the fastest way to lose two weeks before the deadline.

ITR-3

File ITR-3 if you are a sole proprietor or HUF with any of the following:

• Business or professional income where regular books of account are maintained
• Income from more than one head (e.g., salary plus business income, or house property plus profession)
• Turnover or gross receipts above the Section 44AD or 44ADA thresholds
• You have previously opted into 44AD, are now opting out, and the five-year lock-in has not elapsed
• Capital gains, foreign assets, or foreign income

ITR-4 (Sugam)

File ITR-4 if you are an individual, HUF, or partnership firm (not an LLP) and all of the following conditions are met:

• Business income is declared under Section 44AD, 44ADA, or 44AE
• Total income does not exceed Rs. 50 lakh across all heads
• No capital gains, no directorship in a company, no foreign assets

ITR-5

File ITR-5 for:

• All partnership firms maintaining regular books of account
• Every LLP without exception — LLPs cannot use ITR-4 because Section 44AD explicitly excludes them
• Firms subject to tax audit under Section 44AB
• Firms with turnover above the presumptive thresholds

> The LLP rule is absolute. If your entity is an LLP, your answer is ITR-5 regardless of turnover, profit level, or industry.

Presumptive Taxation Under Sections 44AD, 44ADA, and 44AE

These three sections reduce compliance cost by substituting a fixed percentage of turnover for actual-expense accounting. The trade-off is that you cannot claim individual expense deductions beyond what each scheme allows — the deemed profit percentage is the floor, but you may always declare higher actual profit.

Section 44AD — Business Income

Eligible taxpayers: Resident individuals, HUFs, and partnership firms (not LLPs). Specified professions (medicine, law, architecture, etc.) are excluded — those fall under 44ADA instead.

Turnover thresholds for FY 2026-27:

• Rs. 2 crore where cash receipts exceed 5% of total gross receipts
• Rs. 3 crore where cash receipts are 5% or less of total gross receipts (i.e., 95%+ of collections are through account-payee cheques, NEFT, RTGS, or other digital modes)

Deemed profit rates:

• 6% of turnover received through banking or digital channels
• 8% of turnover received in cash

If actual profit exceeds 8%, you should declare the actual figure — the scheme sets a minimum, not a maximum.

The five-year lock-in: If you opt into 44AD and later opt out before five consecutive assessment years have elapsed, you are barred from re-entering the scheme for the next five assessment years from the year of opt-out. This trap costs small businesses significant money when they switch advisors mid-way and the new CA is unaware of the prior election. Document your 44AD opt-in years carefully.

Section 44ADA — Professional Income

Eligible taxpayers: Resident individuals and partnership firms (not LLPs) carrying on a specified profession — medicine, law, engineering, architecture, accountancy, technical consultancy, interior decoration, or any profession notified under Section 44AA(1).

Gross receipts thresholds for FY 2026-27:

• Rs. 50 lakh where cash receipts exceed 5% of total receipts
• Rs. 75 lakh where cash receipts are 5% or below

Deemed profit: 50% of gross receipts. No further expense deductions are permitted within the scheme. At the firm level, Section 40(b) remuneration and interest deductions are still computed separately when applicable.

Section 44AE — Goods Carriage Operators

Available to operators owning ten or fewer goods carriages (including hired vehicles) at any time during the year. Deemed income: Rs. 1,000 per tonne of gross vehicle weight per month for heavy goods vehicles; Rs. 7,500 per vehicle per month for other vehicles — or actual income if higher. The ten-vehicle condition is tested on each individual day; owning eleven vehicles even briefly disqualifies you for that year.

Tax Audit Under Section 44AB: Thresholds and Triggers

The audit report is filed using Form 3CB (for taxpayers whose accounts are not audited under any other statute — which covers most proprietors and partnerships) together with the detailed Form 3CD. The CA signs digitally on the Income Tax Portal.

Critical deadline: The signed audit report must be uploaded by 30 September 2027 for AY 2027-28. The ITR itself follows by 31 October 2027. If the audit report is late, the ITR cannot be validly filed before it — meaning you lose the October deadline entirely.

Filing Deadlines and Advance Tax for FY 2026-27

ITR Due Dates for AY 2027-28

CBDT often issues extension circulars in July and October. Treat these as a bonus, not a plan.

Advance Tax Instalments for FY 2026-27

Proprietors earning business income must pay advance tax in four instalments:

1. 15 June 2026 — 15% of estimated annual liability
2. 15 September 2026 — 45% cumulative
3. 15 December 2026 — 75% cumulative
4. 15 March 2027 — 100%

Exception for presumptive taxpayers: If you are filing on the 44AD or 44ADA presumptive basis, you may pay the entire advance tax as a single instalment by 15 March 2027 — and Section 234C interest will not apply for the earlier-instalment gaps. This is a genuine cash-flow benefit, but you must actually file under the presumptive scheme; if you later declare a different profit, you may face interest exposure on the earlier instalments retrospectively.

Interest under Section 234B runs at 1% per month on unpaid tax liability from 1 April of the assessment year to the date of payment. Interest under Section 234C applies for shortfall in quarterly instalments.

Old Regime vs. New Regime: A Proprietor's Annual Decision

Partnership firms and LLPs have no regime choice — the 30% flat rate applies. But every sole proprietor computes tax twice before deciding.

New regime default slabs (Section 115BAC) for FY 2026-27:

Section 87A rebate (up to Rs. 60,000 under the new regime) effectively makes tax nil for income up to Rs. 12 lakh — but this rebate is unavailable on special-rate income such as short-term capital gains under Section 111A, and it is not available to firms.

What you lose under the new regime (common for proprietors):

• Section 80C deductions up to Rs. 1.5 lakh (PPF, ELSS, LIC, tuition fees)
• Section 80D health insurance premiums
• Interest on housing loan on self-occupied property under Section 24(b)
• House-property loss set-off against business income
• HRA exemption if the proprietor pays rent

Switching rules for proprietors with business income: Once you opt back to the old regime from the new regime, you get only one subsequent opportunity to return to the new regime. After that, the old regime is permanent. This asymmetry means you should model the decision over a five-year income horizon, not just the current year.

Section 40(b): The Partner Remuneration Ceiling

Every partnership firm that pays remuneration to working partners must respect Section 40(b). Excess remuneration is disallowed at the firm level, added back to firm income, and taxed at 30%.

Permissible deduction under Section 40(b):

"Book profit" here means profit computed under Chapter IV-D before deducting partner remuneration, and after adding back all other disallowances.

Interest on partner capital is deductible at a maximum of 12% per annum on the capital balance standing to each partner's credit. Interest beyond 12% is disallowed.

Compute the ceiling quarterly, not at year-end. Firms that discover an excess only in March must either pay additional tax or issue correcting entries that can look suspicious in scrutiny.

Worked Example: When 44ADA Is Unavailable and What It Costs

Facts: Riya & Sonal Associates is a two-partner architectural partnership (not LLP) providing design services. FY 2026-27 gross receipts: Rs. 90 lakh (all through banking channels).

Step 1 — Can 44ADA apply? Architecture is a specified profession. The 44ADA threshold for 95%+ digital receipts is Rs. 75 lakh. Gross receipts of Rs. 90 lakh exceed the threshold, so the firm must maintain full books and is ineligible for 44ADA. It will file ITR-5 and requires a tax audit.

Step 2 — Compute firm's taxable income

Section 40(b) ceiling:

• On first Rs. 3,00,000: 90% = Rs. 2,70,000 (higher than Rs. 1,50,000)
• On balance Rs. 42,00,000: 60% = Rs. 25,20,000
• Total permissible: Rs. 27,90,000

Actual remuneration paid: Rs. 8 lakh each = Rs. 16,00,000 total — well within the ceiling, so the full amount is deductible.

Firm's taxable income: Rs. 45,00,000 − Rs. 16,00,000 = Rs. 29,00,000

Step 3 — Firm's tax liability

• Tax at 30%: Rs. 8,70,000
• Surcharge (total income < Rs. 1 crore): Nil
• Health & Education Cess at 4%: Rs. 34,800
• Total: Rs. 9,04,800

Step 4 — Partners' personal ITR Each partner declares Rs. 8 lakh remuneration + Rs. 1.5 lakh interest = Rs. 9.5 lakh as business income. Their share of distributed profit is exempt under Section 10(2A).

Late-filing cost: If the firm misses the 31 October 2027 deadline and files in November 2027, Section 234F levies Rs. 5,000. File after 31 December 2027 and the penalty doubles to Rs. 10,000. The tax audit report must also precede the ITR; a late report by even one day blocks a timely ITR filing.

Common Mistakes and How to Avoid Them

1. ITR Turnover That Doesn't Match GSTR-1

Tax authorities use Form 26AS and AIS to cross-reference GST outward supply figures against ITR-declared turnover. A discrepancy of even Rs. 5–10 lakh can generate a Section 143(1)(a) adjustment. Prepare a formal GST-to-ITR reconciliation statement every March, documenting each difference — exempt supplies, timing differences, advance receipts, credit notes — and retain it.

2. Excess Partner Remuneration Going Undetected

If a firm pays Rs. 24 lakh in remuneration but the Section 40(b) ceiling is only Rs. 20 lakh, the Rs. 4 lakh excess is disallowed. At 30% tax rate plus cess, that disallowance generates roughly Rs. 1.25 lakh of additional tax that was entirely preventable. Compute the ceiling before the books are finalised, not after.

3. Personal Expenses in Business Books

Proprietors frequently book household utilities, personal vehicle running costs, and family mobile bills as business expenses. Section 37(1) requires expenses to be "wholly and exclusively" for business purposes. A separate business current account is the simplest way to prevent this — mixed accounts are scrutiny red flags.

4. Missing Advance Tax and Paying Interest Needlessly

Section 234B interest at 1% per month on unpaid tax adds up quickly. On a Rs. 4 lakh underpayment carried for seven months: Rs. 4,00,000 × 1% × 7 = Rs. 28,000 — avoidable with a basic March tax estimate. Proprietors on presumptive schemes should note the 15 March single-instalment rule and not assume the saving applies if they switch back to regular books.

5. Not Downloading AIS and TIS Before Filing

The Annual Information Statement (AIS) on the Income Tax Portal now aggregates GST data, property transactions, mutual fund redemptions, dividend receipts, interest income, and TDS from multiple sources. An ITR filed without reconciling against AIS routinely misses income that has already been reported by third parties, triggering automated adjustments. Pull both AIS and TIS at least four weeks before your filing date, raise feedback disputes on incorrect entries, and wait for the portal to update.

6. The 44AD Lock-in Trap

A proprietor uses 44AD for AY 2024-25 and AY 2025-26. In AY 2026-27 (FY 2025-26), an unusually large expense drives actual profit below 6%, and the proprietor opts out to claim the deduction. The consequence: barred from 44AD until AY 2031-32. If the new advisor was not aware of the prior elections, this decision is made without understanding the cost. Always read prior-year ITRs before recommending any scheme change.

7. LLPs Filing ITR-4 with 44AD Income

This happens more often than it should. An LLP is specifically excluded from Section 44AD by its text. Filing ITR-4 for an LLP is an incorrect form filing that invites a defective-return notice and a forced revision under Section 139(5).

Books of Account: The Minimum You Must Keep

Section 44AA read with Rule 6F prescribes mandatory books for specified professionals once gross receipts exceed Rs. 1.5 lakh in any of the three preceding years (or are likely to exceed it). For business taxpayers, compulsory books are triggered once turnover crosses the notified limits. The prescribed records include a cash book, journal, ledger, copies of bills issued, and vouchers for payments.

Even where the presumptive scheme technically exempts you from compulsory books, maintain at minimum:

• Monthly bank reconciliation for every business account
• Customer ledger with invoice numbers, dates, and receipt confirmation
• Vendor ledger with purchase invoices and payment dates
• Fixed-asset register — essential if you ever step out of presumptive and need opening depreciation figures
• TDS working papers matched against Form 26AS and AIS

Scrutiny outcomes are disproportionately determined by documentation quality. A well-organised set of records transforms a notice from a threat into a formality.

GST Turnover vs. ITR Turnover: Reconciling Every Quarter

Many proprietors and firms work with different advisors for GST and income-tax compliance, with reconciliation happening — if at all — only in March. This creates a dangerous gap, because the tax department already connects the two.

Why the numbers commonly differ:

• GST includes zero-rated exports and exempt supplies that may be treated differently in the ITR
• Advances received and reported in GSTR-1 may be recognised as revenue in a later accounting period
• Credit notes issued to buyers reduce GSTR-1 totals but may be accounted differently in P&L
• Input tax credit reversal amounts may flow through the P&L but not as turnover

A quarterly reconciliation workflow:

1. Aggregate GSTR-1 outward supply data for the quarter
2. Pull the revenue figure from your management accounts for the same quarter
3. List every reconciling item with a description and the amount
4. Confirm the explanations are consistent with your accounting policy
5. File this workpaper in the audit folder — attach to Form 3CD if audit applies

Doing this quarterly makes the annual ITR filing a consolidation exercise rather than a forensic investigation.

Step-by-Step Filing: Partnership Firm with Audit (ITR-5, AY 2027-28)

1. Close books for FY 2026-27 — target: 30 April 2027
2. Compute Section 40(b) ceiling on book profit; confirm actual remuneration does not exceed it
3. Prepare GST-to-ITR turnover reconciliation; attach to audit file
4. Engage CA for tax audit — provide trial balance, GST returns, Form 26AS, AIS, bank statements, and TDS certificates
5. CA uploads signed Form 3CB + Form 3CD on the Income Tax Portal — deadline: 30 September 2027
6. Prepare ITR-5 using the JSON utility at incometax.gov.in or approved software; verify pre-filled data matches your books
7. Pay self-assessment tax on any balance (after TDS and advance tax) and enter challan details in ITR
8. File ITR-5 — deadline: 31 October 2027
9. E-verify using a Digital Signature Certificate (DSC for firms; partners' DSC acceptable)
10. Store ITR acknowledgement (ITR-V), filed JSON, and complete audit file for at least eight assessment years

Key Takeaways

• Form selection is binary for LLPs: always ITR-5 — never ITR-4, never 44AD.
• Section 44AD caps at Rs. 2 crore (cash-heavy) or Rs. 3 crore (95%+ digital receipts); 44ADA caps at Rs. 50 lakh or Rs. 75 lakh. Both exclude LLPs. Opting out triggers a five-year bar on re-entry.
• Partnership firms pay 30% flat regardless of income level; surcharge applies above Rs. 1 crore. Partners are taxed individually on remuneration and interest — not on profit share.
• Section 40(b) remuneration ceiling must be computed before books are finalised, not after — excess remuneration is disallowed and taxed at 30% with no remedy post-filing.
• Advance tax for presumptive filers may be paid as a single instalment by 15 March 2027 — but only if you are genuinely filing on the presumptive basis that year.
• GST turnover and ITR turnover must be reconciled quarterly, not annually; documentation of every reconciling item is your first line of defence against Section 143(1) adjustments.
• Download AIS and TIS four weeks before filing, verify each pre-filled line, raise disputes on incorrect data, and cross-check against your books before submitting any ITR.