QRMP quarterly GSTR-1 is due on the 13th of the month after each quarter ends

India's indirect-tax calendar does not pause for the monsoon. For businesses that file under the Quarterly Return Monthly Payment (QRMP) scheme — open to registered persons with aggregate turnover up to Rs 5 crore in the preceding financial year — the single most important recurring date is the 13th of the month after each quarter closes, when Form GSTR-1 falls due. As trading resumes on Tuesday 4 August 2026, that quarterly rhythm sits alongside a cluster of monthly GST and income-tax deposit deadlines that every finance team should have pinned to the wall. This watchlist maps the compliance dates that matter in the days ahead, the macro backdrop against which they land, and the reconciliation work that connects a GST return to a company's reported numbers.

Statutory Deadlines

Under the QRMP framework, a quarterly filer furnishes Form GSTR-1 — the statement of outward supplies — only once a quarter, by the 13th day of the month succeeding that quarter. For the January-March quarter the return is due on 13 April; for the April-June 2026 quarter it fell due on 13 July 2026; and for the current July-September 2026 quarter it will fall due on 13 October 2026. Any B2B invoices not already pushed through the Invoice Furnishing Facility (IFF) in the first two months of the quarter must be reported in this quarterly GSTR-1, so the October filing is where a QRMP taxpayer's outward-supply record for the whole quarter is squared off.

The near-term action for a QRMP filer in August is not the quarterly return but the optional monthly steps that feed it. The table below sets out the July-September 2026 quarter for a QRMP taxpayer, with the two intra-quarter facilities — IFF for invoices and PMT-06 for cash — alongside the quarter-end returns.

The Invoice Furnishing Facility is not mandatory. It lets a QRMP taxpayer upload the first two months' B2B invoices — July invoices by 13 August 2026 and August invoices by 13 September 2026 — so that a buyer sees the input-tax credit reflected in its GSTR-2B without waiting for the quarter-end GSTR-1. If a supplier skips the IFF, no penalty follows; the invoices simply roll into the quarterly GSTR-1 due on 13 October 2026, and the buyer's credit lands later. For the cash side, a QRMP taxpayer deposits tax for July and August through the PMT-06 challan by the 25th of the following month, choosing either the fixed-sum method (35% of the tax paid in cash in the previous quarter) or a self-assessment of the month's actual liability.

Businesses that are not in the QRMP scheme — those above the Rs 5 crore turnover line, or smaller taxpayers who opted to stay on monthly filing — run a tighter calendar. They file GSTR-1 for July 2026 by 11 August 2026 and the summary return GSTR-3B for July by 20 August 2026. Separately, and regardless of GST status, tax deducted at source during July 2026 must be deposited with the government by 7 August 2026 under Rule 30 of the Income-tax Rules; a missed deposit attracts interest at 1.5% per month under Section 201(1A) of the Income-tax Act, so a single day's slip past the 7th costs a full month's interest.

The next income-tax milestone after the August GST cluster is the second advance-tax instalment, due 15 September 2026, by when 45% of the year's estimated liability must be paid under Section 211 of the Income-tax Act. Anyone whose net tax liability for the year is expected to exceed Rs 10,000 falls within the advance-tax net under Section 208, which pulls in salaried taxpayers with sizeable capital gains, freelancers and businesses alike. The instalment schedule for the financial year runs as follows.

You can size each instalment against your projected income with our advance tax calculator, and a refresher on how the advance-tax obligation is triggered sits in the glossary. The financial year definition matters here too, because the QRMP turnover test and the advance-tax estimate both key off the same 1 April to 31 March period.

Market Events

Beyond the compliance desk, the macro backdrop for the week is a repo rate held at 5.25%, left unchanged at the Reserve Bank's Monetary Policy Committee review in April 2026 after a cumulative 125 basis points of cuts delivered through 2025. A neutral stance and a policy rate that has now been on hold for two consecutive meetings means the near-term rate signal for deposit and loan pricing is stability rather than fresh direction, and the practical read for treasury teams is that the compliance calendar, not a rate surprise, is the scheduled workload for the session.

No central-bank policy decision or scheduled regulatory board meeting is confirmed on the public record in the material reviewed for this watchlist for 4 August 2026, so this desk will not manufacture a headline where none is verified. The working assumption for the session is a data-light day in which the GST and TDS deadlines above, rather than a single market event, drive finance-team activity. For context on the growth and inflation picture the central bank is working with, our earlier report on the RBI's FY27 growth and inflation projections from the June 2026 review remains the reference.

The primary market, by contrast, has stayed active through the summer. Recent Oquilia coverage tracked the close of Juniper Green Energy's Rs 1,800 crore IPO, where the qualified-institutional portion led the book, and the Rs 200 to 212 price band set for Technocraft Ventures' Rs 252 crore offer. Investors weighing these one-off listings against a steady, rules-based allocation can model a monthly commitment with our SIP calculator before deciding how much of a portfolio to keep in disciplined instalments versus opportunistic bets.

Earnings

No individual company results are confirmed on the official record in the briefing material for this watchlist window, so this desk will not publish a results calendar it cannot verify. The point worth making for finance teams is procedural rather than name-specific: the GST returns set out above feed directly into the revenue and input-tax-credit lines on which quarterly results rest. Reconciling the outward supplies reported in GSTR-1 against the summary GSTR-3B, and both against the auto-populated GSTR-2B, before results are finalised is what keeps a company's reported turnover consistent with the data the GST portal already holds.

For a listed company that reconciliation is not housekeeping, it is exposure management. A mismatch between GSTR-1 and GSTR-3B is among the most common triggers for a departmental notice, and interest on any short-paid tax runs at 18% per annum under Section 50 of the Central Goods and Services Tax Act, 2017. Because the QRMP quarterly GSTR-1 for July-September 2026 is not due until 13 October 2026, a business closing its September-quarter books earlier than that date is reporting revenue before its own outward-supply statement is formally filed, which is precisely why the internal reconciliation has to run ahead of the statutory clock rather than in step with it.

FAQ

When is quarterly GSTR-1 due under the QRMP scheme?

It is due on the 13th day of the month following the end of the quarter. For the July to September 2026 quarter, the quarterly GSTR-1 is due on 13 October 2026, and it captures every outward supply not already furnished through the Invoice Furnishing Facility in July and August.

Who is eligible to file under QRMP?

A registered person whose aggregate turnover did not exceed Rs 5 crore in the preceding financial year can opt for QRMP. The scheme lets the taxpayer file GSTR-1 and GSTR-3B quarterly while paying tax monthly through the PMT-06 challan for the first two months of each quarter.

Is the Invoice Furnishing Facility mandatory?

No. The IFF is optional and is meant to let a supplier report the first two months' B2B invoices — July invoices by 13 August 2026 and August invoices by 13 September 2026 — so buyers see the credit in GSTR-2B sooner. If a supplier does not use it, those invoices are simply reported in the quarterly GSTR-1 due on 13 October 2026.

What is the penalty for filing GSTR-1 late?

Late filing of GSTR-1 attracts a late fee of Rs 50 per day for a return with tax liability and Rs 20 per day for a nil return, subject to the prescribed cap. Because GSTR-1 must be filed before the corresponding GSTR-3B, a delay also blocks the summary return and can hold up a buyer's input-tax credit.

When is the second advance-tax instalment due?

The second instalment is due on 15 September 2026, by which date 45% of the year's estimated tax must have been paid under Section 211 of the Income-tax Act. The obligation applies to any taxpayer whose net liability for the year is expected to exceed Rs 10,000.

By when must July 2026 TDS be deposited?

Tax deducted at source in July 2026 must be deposited by 7 August 2026 under Rule 30 of the Income-tax Rules. A delay carries interest at 1.5% per month under Section 201(1A), calculated from the date of deduction, so even a one-day overrun triggers a full month's interest.

Do advance-tax due dates differ under the new tax regime?

No. The 15 June, 15 September, 15 December and 15 March instalment dates are identical under both regimes. What differs is the liability itself: under the new regime for FY 2025-26 the Section 87A rebate is Rs 60,000, which can reduce the estimated liability enough that a smaller-income taxpayer has no advance tax to pay at all.