Partner-led Chartered Accountants+91 93502 18574info@cakila.in
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Compliance calendar for October 2026 to January 2027

GST compliance and advisory, month after month

Accurate returns, reconciled input tax credit and prompt answers to notices, so GST stays a routine process rather than a cash-flow problem.

Overview

GST now leaves little room to correct mistakes later. Liability in GSTR-3B is locked once auto-populated, returns cannot be filed more than three years after their due date, and input tax credit depends on what suppliers report through the Invoice Management System.

We run GST compliance for businesses registered in one or several States, reconcile credit every month and deal with the department when questions arise.

What we handle

Registration and returns

New and additional registrations, GSTR-1, GSTR-3B, QRMP filings, composition returns and e-invoicing checks.

Input tax credit

Monthly reconciliation with GSTR-2B and the Invoice Management System, vendor follow-up and reversal tracking.

Annual returns

GSTR-9 and GSTR-9C for FY 2025-26, reporting supplies before and after the September 2025 rate changes correctly.

Refunds

Refunds of accumulated credit on exports and inverted duty structures, and refunds of excess cash.

Advisory

Classification, valuation, place of supply and rate questions, including transactions affected by rate rationalisation.

Notices and appeals

Replies to scrutiny notices, audit observations and demand orders, and appeals up to the GST Appellate Tribunal.

Typical situations

  • A business with ITC mismatches between its books and GSTR-2B
  • An exporter with refunds pending on the portal
  • A company preparing GSTR-9C for a year that straddles the 2025 rate changes
  • A demand order that needs an appeal within the time limit

Laws and regulations

  • CGST Act, 2017
  • IGST Act, 2017
  • State GST Acts
  • CGST Rules, 2017
  • GST Council notifications

Frequently asked questions

What is the last date to claim input tax credit for FY 2025-26?

30 November 2026, or the date of filing the annual return for FY 2025-26 if that is earlier. Credit notes and amendments for that year follow the same limit.

Who has to file GSTR-9 and GSTR-9C?

GSTR-9 is mandatory for taxpayers with aggregate turnover above ₹2 crore and GSTR-9C above ₹5 crore. Both are due on 31 December 2026 for FY 2025-26.

Can GSTR-3B be revised?

Tax liability auto-populated from GSTR-1 can no longer be edited in GSTR-3B. Corrections are made through GSTR-1A or the next period's GSTR-1, which is why reconciliation before filing matters.

Got a notice, a deadline or a big decision?

Tell us what you are facing and when it is due. A partner will get back to you.