Last Updated on July 7, 2026
Running a proprietorship feels simple on paper, since there is no separate legal entity and no ROC filings to worry about. But the moment you register for GST, hire staff, or cross the tax audit threshold, a real set of recurring deadlines kicks in, and missing them attracts interest and late fees.
This calendar walks through every compliance a proprietorship in India needs to track through 2026, from GST returns to advance tax and TDS, so nothing slips through unnoticed.
Quick Summary
The annual compliance requirements for a sole proprietorship depend on its registrations, turnover, business activities, and whether it employs staff. A GST-registered proprietorship must comply with applicable GST return filing requirements, while businesses with employees may also need to comply with EPF and ESI regulations. Proprietors must also monitor advance tax payments and Income Tax Return (ITR) filing deadlines to remain compliant.
Key Compliance Deadlines
- GST returns are filed monthly or quarterly, depending on the applicable GST return and scheme (including QRMP, where eligible).
- Advance tax instalments are generally due on 15 June, 15 September, 15 December, and 15 March.
- ITR filing is generally due by 31 July for non-audit cases and 31 October for audit cases, unless extended by the CBDT.
- Tax audit reports, where applicable, must be furnished within the prescribed due date under the Income-tax Act.
- EPF and ESI contributions, where applicable, are generally payable by the 15th of the following month.
Need Help Managing Proprietorship Compliance?
Kanakkupillai’s experts can help you manage GST filings, income tax returns, bookkeeping, and annual compliance, ensuring your proprietorship stays compliant throughout the year.
What is Proprietorship Compliance?
Proprietorship compliance refers to the ongoing tax, GST, and labour law filings a sole proprietor must complete, depending on the registrations and thresholds applicable to their business. Since a proprietorship has no separate legal identity, all compliance is filed under the owner’s own PAN, and the owner is personally responsible for every deadline.
Why is it Important?
A proprietorship does not face ROC-style penalties, but GST and Income Tax defaults still carry real financial consequences: interest under Sections 234B and 234C for advance tax shortfalls, late fees for delayed GST returns, and Section 234E penalties for late TDS filing. Staying current also keeps your GST and PAN records clean for loan applications and vendor onboarding.
Banks and larger clients increasingly check GST filing history and ITR continuity before extending credit or signing vendor contracts. A proprietorship with a clean, uninterrupted compliance record finds it noticeably easier to access working capital loans and win business from corporate clients who run vendor due diligence.
Who Needs to Track This Calendar?
- Any GST-registered proprietorship, regardless of turnover
- Proprietorships are liable for a tax audit under Section 44AB
- Proprietorships employing staff covered under PF or ESI thresholds
- Any proprietor with an estimated tax liability above Rs. 10,000 after TDS credit
Applicability by Compliance Type
- GST returns apply only if the proprietorship is GST-registered
- Tax audit and its related deadlines apply based on turnover and cash transaction limits under Section 44AB
- PF applies once staff strength crosses 20 employees; ESI applies to establishments with 10 or more employees (in some states, 20) where employees earn up to ₹21,000 per month.
- Advance tax applies to any proprietor whose net tax payable exceeds Rs. 10,000 in a year
Presumptive Taxation – Simpler Compliance for Small Proprietorships
| Scheme | Who It Applies To | Turnover Limit | Profit Declaration |
| Section 44AD | Traders, businesses | ₹2 crore (₹3 crore if 95%+ digital) | 6% of digital / 8% of cash turnover |
| Section 44ADA | Specified professionals | ₹50 lakh (₹75 lakh if 95%+ digital) | 50% of gross receipts |
Presumptive taxpayers pay 100% of the advance tax in a single instalment by March 15, not in four instalments. No books of account are required. No tax audit unless you opt out of the scheme after using it previously.
Opting out of presumptive taxation after using it locks you out of the scheme for 5 years, worth knowing before switching to regular book-based filing.
Tax Audit Thresholds – Section 44AB for Proprietorship
| Business Type | Turnover/Receipts | Threshold |
| Trading/Business | Turnover | ₹1 crore |
| Business (95%+ digital transactions) | Turnover | ₹10 crore |
| Profession (doctors, lawyers, CAs, etc.) | Gross receipts | ₹50 lakh |
| Opted for presumptive, but profit is below the threshold | Any turnover | Mandatory audit |
The ₹10 crore limit is a game-changer for most small proprietorships. If 95% or more of your receipts and payments are digital, you only need an audit above ₹10 crore, not ₹1 crore. Many proprietors don’t know this and arrange audits unnecessarily.
Records to Maintain
- Sales and purchase invoices reconciled with GST returns each month
- Bank statements and cash books supporting income tax filings
- TDS challans and Form 26AS reconciliation, if TDS is deducted or received
- Payroll and attendance records, if PF or ESI registration applies
Recurring Monthly Compliances for a Sole Proprietorship Firm 2026
| Compliance | Due Date | Applicable To |
| GSTR-1 (monthly filers) | 11th of next month | GST-registered proprietorships |
| GSTR-3B (monthly filers) | 20th of next month | GST-registered proprietorships |
| TDS/TCS deposit | 7th of next month | Proprietorships deducting TDS |
| PF contribution | 15th of next month | Proprietorships with PF registration |
| ESI contribution | 15th of next month | Proprietorships with ESI registration |
| GSTR-2B reconciliation with purchase register | Before filing GSTR-3B | Ensures ITC claimed matches what suppliers reported |
| Reverse charge liability check | Monthly | RCM applies to certain purchases from unregistered vendors |
Proprietorships under the QRMP scheme file GSTR-1 and GSTR-3B quarterly instead, with tax paid monthly through Form PMT-06 by the 25th.
Key Annual and Quarterly Compliance Calendar for Proprietorship 2026
| Month | Compliance | Due Date |
| March 2026 | 4th Advance Tax instalment (100%) for FY 2025-26 | 15 March |
| March 2026 | LUT renewal for exporters, FY 2026-27 | 31 March |
| April 2026 | GSTR-4 annual return for composition taxpayers | 30 April |
| May 2026 | TDS return for Q4 (Jan-Mar 2026) | 31 May |
| June 2026 | 1st Advance Tax instalment (15%) for FY 2026-27 | 15 June |
| July 2026 | ITR filing for non-audit cases, FY 2025-26 | 31 July |
| July 2026 | TDS return for Q1 (Apr-Jun 2026) | 31 July |
| September 2026 | 2nd Advance Tax instalment (45%) | 15 September |
| September 2026 | Tax audit report filing, where applicable | 30 September is the statutory date, but extensions are common |
| October 2026 | ITR filing for audit cases, FY 2025-26 | 31 October |
| October 2026 | TDS return for Q2 (Jul-Sep 2026) | 31 October |
| December 2026 | 3rd Advance Tax instalment (75%) | 15 December |
| December 2026 | GSTR-9 annual return is currently mandatory for turnover above ₹2 crore, but the government has been waiving it for taxpayers below ₹2 crore through annual notifications. | 31 December |
| January 2027 | TDS return for Q3 (Oct-Dec 2026) | 31 January 2027 |
Planning to file your taxes? Learn ITR Filing for Sole Proprietorship in India, check the Last Date for ITR Filing, understand the required documents, and follow the complete filing process to avoid penalties.
Compliance Requirements Beyond Tax and GST
- Professional tax filings and renewal dates vary by state; check your state’s professional tax department
- Shop and Establishment registration renewal timelines vary by state and validity period
- Udyam Registration details should be reviewed annually, since turnover and investment figures link to your ITR
Learn how to update or change GST Registration Details Online with our step-by-step guide. Understand the GST amendment process, required documents, timelines, and how to keep your GST registration compliant.
Penalty / Consequences
1. Legal: Delayed GST returns attract late fees under the CGST Act, in addition to interest on unpaid tax
Actual GST Late Fee Figures
| Return | Late Fee per Day | Maximum Cap |
| GSTR-3B (tax payable) | ₹50/day (₹25 CGST + ₹25 SGST) | ₹10,000 |
| GSTR-3B (nil return) | ₹20/day (₹10 CGST + ₹10 SGST) | ₹500 |
| GSTR-1 | ₹50/day | ₹10,000 |
| GSTR-1 (nil return) | ₹20/day | ₹500 |
Interest on unpaid tax runs at 18% per annum from the due date. These amounts are separate; late fees and interest both apply simultaneously to delayed returns with tax liability.
2. Financial: Advance tax shortfalls attract 1% monthly interest under Sections 234B and 234C
3. Compliance: Late TDS returns attract a Rs. 200 per day fee under Section 234E, which cannot be waived
Section 234E – The TDS Late Fee That Can’t Be Waived
₹200/day applies from the due date until the actual filing date, subject to a maximum of the TDS amount itself, meaning the fee can equal the entire TDS deducted, but not exceed it.
Unlike GST late fees, which have been waived or reduced periodically by the government, Section 234E fees have never been waived and cannot be reduced by the officer. A proprietor deducting ₹50,000 TDS on a contractor payment who files the quarterly return 90 days late faces ₹18,000 in fees alone purely for late paperwork, not for any unpaid tax.
4. Business: A pattern of late GST filings can affect your GST compliance rating and vendor relationships
Common Mistakes
- Assuming a proprietorship has no compliance obligations since there is no ROC filing
- Missing advance tax instalments and paying the full amount only at year-end
- Not reconciling GSTR-1 and GSTR-3B figures before the annual return
- Forgetting TDS returns because the tax was already deposited on time
Benefits of Following a Compliance Calendar
- Avoids last-minute scrambling and portal congestion near due dates
- Reduces interest and late fee outflow across the year
- Keeps books audit-ready and easier to reconcile at year-end
- Builds a clean compliance record for future loan or vendor due diligence
Practical Scenario
A GST-registered proprietor running a retail store under the QRMP scheme pays tax monthly through PMT-06 but files GSTR-1 and GSTR-3B only once a quarter. Midway through the year, the owner assumes the quarterly filing also covers the monthly tax payment and skips the May PMT-06 challan. This triggers interest for that month, even though the quarterly return filed later showed no discrepancy. A simple monthly reminder for the 25th would have avoided this.
The same proprietor also crossed the tax audit turnover threshold that year without realising it, since growth had been gradual through the festive season. The tax audit report ends up being prepared in a rush close to the 30 September deadline, purely because nobody was tracking turnover against the threshold month on month.
Expert Tips / Best Practices
- Set calendar reminders 5 to 7 days before each due date, not on the date itself
- Reconcile GST returns monthly instead of waiting until the annual return
- Estimate annual tax liability early so advance tax instalments are accurate
- Review PF and ESI applicability each time staff strength changes
How Kanakkupillai Can Help?
Kanakkupillai helps proprietors track GST, TDS, and income tax deadlines throughout the year, prepares and files returns on time, and flags changes in applicability, such as crossing the tax audit or PF thresholds, so compliance stays predictable rather than reactive.
Conclusion
A proprietorship’s compliance calendar looks light at first glance, but it grows quickly once GST registration, staff, or turnover thresholds come into play. Mapping out your due dates at the start of the year, rather than reacting to each one as it arrives, is the simplest way to avoid interest, late fees, and last-minute stress.
Stay Compliant with Every Due Date in 2026
Never miss an important filing deadline. Get expert assistance with GST, Income Tax, TDS, and all proprietorship compliance requirements to avoid penalties and keep your business compliant throughout 2026.
FAQs
1. Does a proprietorship need to file any ROC returns?
No, since a proprietorship is not a separate legal entity under the Companies Act, there are no ROC or MCA filings involved. All compliance is limited to GST, income tax, and applicable labour law filings under the owner’s PAN.
2. Is advance tax compulsory for every proprietor?
Advance tax applies only if the estimated tax liability for the year exceeds Rs. 10,000 after TDS credit. Proprietors below this threshold can pay their entire tax liability at the time of filing the ITR without instalments.
3. What happens if a proprietorship misses a GST return deadline?
A late fee applies for each day of delay, along with interest on any unpaid tax liability. Continued non-filing can also affect the proprietorship’s GST compliance rating and its ability to claim input tax credit smoothly.
4. Do all proprietorships need a tax audit?
No, a tax audit under Section 44AB is required only when turnover or cash transaction limits prescribed under the Income Tax Act are crossed. Proprietorships under presumptive taxation and below the threshold are generally exempt.
5. Can a proprietorship opt for quarterly GST filing?
Yes, proprietorships with a turnover up to Rs. 5 crore in the previous year can opt for the QRMP scheme, filing GSTR-1 and GSTR-3B quarterly while still paying tax monthly through PMT-06.
6. Is PF or ESI registration mandatory for a proprietorship?
PF registration becomes mandatory once the proprietorship employs 20 or more people, and ESI applies based on employee wage thresholds. Below these limits, registration is usually voluntary.
