India Compliance Roundup: September — Key Deadlines, Filings & Regulatory Updates

Why September Is the Most Critical Compliance Month for Foreign Companies in India

If there is one month in India's compliance calendar that demands the full attention of every foreign-owned company's finance and legal team, it is September. The month sits at the intersection of multiple regulatory cycles — the second quarter advance tax instalment falls on September 15, Director KYC must be completed by September 30, the Annual General Meeting deadline for most companies is September 30, and the month is packed with recurring GST and TDS obligations. For foreign-owned subsidiaries that also carry FEMA reporting obligations, September is when the consequences of any earlier delays in FLA returns or FC-GPR filings begin to crystallize.

This roundup covers every key September deadline for FY 2026-27, organized by regulator. Each section includes the exact due date, the specific form or filing involved, the penalty for non-compliance, and practical tips for foreign companies navigating these obligations.

Income Tax Deadlines in September

Second Instalment of Advance Tax — September 15

Every company with an estimated tax liability exceeding INR 10,000 for the financial year must pay advance tax in quarterly instalments. The second instalment — covering at least 45% of the total estimated tax liability cumulatively — is due on September 15. For FY 2025-26, this means the cumulative advance tax paid by September 15 (including the June 15 instalment) must be at least 45% of the full-year tax estimate.

Foreign-owned subsidiaries often struggle with this deadline because their India operations may have unpredictable revenue patterns, particularly in the early years. The temptation to defer tax estimation until the audit is complete leads to underestimation, which triggers automatic interest under Section 234C at 1% per month on the shortfall for that quarter. Additionally, interest under Section 234B applies at 1% per month if total advance tax paid falls short of 90% of the assessed tax liability.

Practical tip: Work with your tax advisor in the first week of September to re-estimate annual tax liability based on H1 actuals. A revised estimate in September can significantly reduce Section 234C interest exposure compared to relying on the April estimate alone.

TDS Payment for August — September 7

Tax Deducted at Source on all payments made during August must be deposited with the government by September 7. This covers salary TDS (Form 24Q), non-salary payments to residents (Form 26Q), and — critically for foreign companies — payments to non-residents under Section 195 (Form 27Q). For cross-border payments such as royalties, management fees, and technical service fees to a parent company, the correct DTAA rate must be applied, and Form 15CA/15CB certification must be obtained before each remittance.

Late deposit of TDS attracts interest at 1.5% per month under Section 201(1A) from the date of deduction to the date of actual deposit. This interest is not deductible as a business expense.

TDS Return for Q1 (April-June) — Extended Deadline Awareness

While the standard due date for Q1 TDS returns is July 31, foreign companies that missed this deadline or filed with errors should note that corrections and revised returns become increasingly urgent in September. Uncorrected TDS returns affect the recipients' Form 26AS, which in turn delays their ITR filing. The late filing fee under Section 234E is INR 200 per day, capped at the TDS amount.

MCA and ROC Filings in September

DIR-3 KYC — September 30

Every individual holding a Director Identification Number (DIN) must complete the annual Director KYC by September 30. This is a personal obligation of each director, not a company filing. For FY 2025-26, the KYC relates to details as of March 31, 2026.

There are two forms: DIR-3 KYC (the full form, required for first-time filers or those with changes in personal details) and DIR-3 KYC Web (for directors whose details remain unchanged from the previous year). Both must be filed through the MCA portal using a Digital Signature Certificate (DSC).

For foreign directors sitting on the boards of Indian subsidiaries, this deadline is consistently missed. The reasons are practical: foreign directors often do not have active Indian mobile numbers for OTP verification, their DSCs may have expired, and the obligation is personal — meaning the company's compliance team cannot file it on their behalf without the director's active involvement.

Penalty: If DIR-3 KYC is not filed by September 30, the DIN is deactivated on October 1. A deactivated DIN means the director cannot sign any MCA filings, approve board resolutions, or participate in statutory processes. Reactivation requires filing DIR-3 KYC with a late fee of INR 5,000. In 2025, MCA extended the deadline to October 15 — but foreign companies should not count on annual extensions.

AGM Preparation — Deadline September 30

Every company must hold its Annual General Meeting within six months from the end of its financial year. For companies with a March 31 year-end, the AGM deadline is September 30. While the AGM itself is a Companies Act requirement — not an MCA filing — it triggers a cascade of downstream filings:

• AOC-4 (Financial Statements): Due within 30 days of the AGM — i.e., by October 30 if the AGM is held on September 30.
• MGT-7 (Annual Return): Due within 60 days of the AGM — i.e., by November 29.
• ADT-1 (Auditor Appointment): Due within 15 days of the AGM — i.e., by October 15.

For foreign-owned companies, the AGM process is complicated by the need for the statutory audit to be completed first. If transfer pricing documentation under Section 92E is pending, the audit cannot be finalized, which delays the AGM, which compresses the windows for AOC-4 and MGT-7. The penalty for late filing of AOC-4 or MGT-7 is INR 100 per day with no cap, and three consecutive years of non-filing triggers automatic director disqualification under Section 164(2).

Practical tip: Begin transfer pricing documentation in June. If intercompany transactions are routine and have not changed materially, the TP study from the previous year can be updated rather than redone from scratch.

Annual Return of LLP (Form 11) — October 30 Preparation

For foreign-owned entities structured as LLPs, the annual return in Form 11 is due within 60 days of the close of the financial year — i.e., May 30 for LLPs with a March 31 year-end. However, if this was missed, the late filing penalty of INR 100 per day applies, and September is the month to regularize any pending LLP filings before the penalty amount becomes significant.

GST Filings in September

GSTR-1 (Outward Supplies for August) — September 11

Companies with annual turnover exceeding INR 5 crore must file monthly GSTR-1 by the 11th of the following month. GSTR-1 for August is due on September 11. Companies under the QRMP scheme (turnover up to INR 5 crore) file quarterly and would file for the July-September quarter by October 13.

GSTR-3B (Summary Return for August) — September 20

The monthly GST summary return GSTR-3B for August is due on September 20 for companies filing monthly. This is the return where the actual tax liability is discharged. Quarterly filers under QRMP file by the 22nd or 24th of the month following the quarter end, depending on the state.

Late filing of GSTR-3B attracts a late fee of INR 50 per day (INR 25 CGST + INR 25 SGST) for returns with tax liability, and INR 20 per day for nil returns. Interest on late payment of GST is 18% per annum on the outstanding amount.

GSTR-7 (TDS under GST for August) — September 10

Government entities and specified deductors must file GSTR-7 for August by September 10. This is relevant for foreign companies that have contracts with government agencies or PSUs where GST TDS at 2% is deducted.

ITC Reconciliation Before GSTR-9 Preparation

September is the practical month to begin reconciling Input Tax Credit (ITC) claimed in monthly returns against the auto-populated GSTR-2A/2B data. The annual return GSTR-9 is due by December 31, and companies with turnover exceeding INR 5 crore must also file GSTR-9C (reconciliation statement). Starting the reconciliation in September — after five months of data is available — gives adequate time to identify and rectify mismatches with suppliers.

RBI and FEMA Obligations — September Status Check

FLA Return — Filed by July 15 (September Follow-Up)

The FLA return deadline was July 15. If your company missed this deadline — and many foreign-owned companies do — September is when the RBI may begin follow-up. Non-filing of the FLA return can result in the company being flagged in the RBI's FIRMS portal, which creates complications for any future FDI transactions, share transfers, or exit transactions. FEMA penalties can reach up to three times the amount involved or INR 2,00,000 where not quantifiable, plus INR 5,000 per day of continuing contravention.

If you missed the July 15 deadline, file immediately. The FLA return can still be submitted after the deadline — the RBI portal remains open — but the delay will be noted and may trigger a compounding application requirement.

FC-GPR Pending Filings

If any share allotments were made during April-August and the corresponding FC-GPR was not filed within 30 days, September is the month to regularize these filings. Each unfiled FC-GPR means the foreign investment is technically unreported, which can block future funding rounds. Late filing requires a compounding application to the RBI, with fees typically ranging from INR 20,000 to INR 5,00,000 depending on the delay and amount.

ECB-2 Return for August — September 7

Companies with External Commercial Borrowings (ECBs) must file the monthly ECB-2 return with the RBI through the AD bank within 7 days of the end of the month. The ECB-2 for August is due by September 7. This applies to any foreign-owned Indian subsidiary that has received loans from its parent company or other foreign entities.

Labour and Employment Compliance

PF and ESI Contributions for August — September 15

Employer and employee contributions to the Provident Fund must be deposited by the 15th of the following month. For August, PF contributions are due by September 15. ESI contributions follow the same timeline. Foreign companies with 20 or more employees (including contract workers) must be registered under the EPF Act, and those with 10 or more employees (in most states) earning up to INR 21,000 per month must register under ESI.

Late deposit of PF contributions attracts penal damages at rates ranging from 5% to 25% depending on the delay period, plus interest at 12% per annum. The EPFO has become increasingly strict about enforcement in 2025-26.

Professional Tax — State-Specific Deadlines

Professional Tax is a state-level obligation with varying deadlines. In Maharashtra, monthly PT for August is due by September 15 for companies with more than 20 employees. In Karnataka, monthly returns are due by the 20th of the following month. Foreign companies often overlook PT because it does not appear in central government compliance calendars. The amounts are small (maximum INR 2,500 per employee per year), but non-registration can trigger penalties disproportionate to the tax amount.

Key September Action Items for Foreign Companies

Board Meeting Before September 30

Companies must hold at least four board meetings per financial year, with no more than 120 days between consecutive meetings. If the last board meeting was in May or early June, a board meeting must be convened in September. The September board meeting is also an opportunity to approve the audited financial statements and fix the date for the AGM.

For foreign companies with directors based abroad, ensure board meeting notices comply with the 7-day advance notice requirement (or shorter if articles permit). Virtual attendance via video conferencing is permitted for most agenda items under Section 173 and Rule 3 of the Companies (Meetings of Board and its Powers) Rules.

Statutory Audit Finalization

If the statutory audit for FY 2026-27 is not yet complete, September is the hard deadline month. The auditor must sign the audit report before the AGM, and the AGM must occur by September 30. For companies requiring a transfer pricing audit (Form 3CEB due October 31) and FEMA compliance review, coordinate with all advisors simultaneously rather than sequentially. Parallel processing of the statutory audit, transfer pricing study, and FEMA review can save 4-6 weeks.

DSC Renewal Check

Multiple September filings require valid Digital Signature Certificates — DIR-3 KYC, board resolutions, AGM minutes. Check the expiry dates of DSCs for all directors and authorized signatories in the first week of September. DSC renewal takes 2-5 business days, and a last-minute expired DSC can derail the entire compliance timeline.

Penalty Summary Table for September Deadlines

September Compliance Calendar for Foreign Companies — Date-Wise Summary

To help your compliance team plan the month effectively, here is every September deadline in chronological order:

• September 1-7: Deposit TDS for August payments (September 7). File ECB-2 return for August with RBI through AD bank (September 7). Begin advance tax re-estimation based on H1 actuals.
• September 7-11: File GSTR-7 for August (September 10). File GSTR-1 for August outward supplies (September 11). Follow up on any pending GSTR-2A/2B mismatches from prior months.
• September 11-15: Pay second instalment of advance tax — 45% cumulative (September 15). Deposit PF contributions for August (September 15). Deposit ESI contributions for August (September 15). Pay Professional Tax for August in Maharashtra (September 15).
• September 15-20: File GSTR-3B summary return for August (September 20). Convene board meeting if more than 120 days have elapsed since the last one. Finalize statutory audit report for AGM.
• September 20-30: Hold AGM if not already held — September 30 is the deadline for March year-end companies. File DIR-3 KYC for all DIN holders (September 30). File DIR-3 KYC Web for directors with no changes in personal details (September 30). Verify all DSCs are valid and not expiring. Complete ITC reconciliation for GSTR-9 preparation.

For foreign companies that also need to regularize any missed FLA returns (deadline was July 15) or pending FC-GPR filings, September is the optimal month to clear this backlog before Q3 compliance obligations begin stacking up in October (Form 3CEB due October 31) and November (income tax return and MGT-7).

Key Takeaways

• September concentrates deadlines from five regulators — Income Tax, MCA, GST, RBI, and EPFO — making it the most compliance-intensive month for foreign companies in India.
• The advance tax second instalment (September 15) and DIR-3 KYC (September 30) are the two most commonly missed deadlines. Re-estimate tax liability in early September and brief foreign directors on their KYC obligation by August 15.
• AGM preparation drives everything downstream — delayed AGM compresses the windows for AOC-4 (30 days post-AGM) and MGT-7 (60 days post-AGM). Finalize the statutory audit by mid-September at the latest.
• RBI filings missed earlier in the year (FLA return, FC-GPR) should be regularized in September before the cumulative daily penalties escalate further.
• Engage your annual compliance service provider for a September readiness check covering all five regulators — not just MCA and Income Tax.