---
title: "GST Due Dates April 2026: GSTR-1, GSTR-3B, and Compliance Calendar"
description: "All GST filing deadlines for April 2026 in one place. GSTR-1, GSTR-3B, GSTR-9, TDS, TCS — never miss a deadline and avoid late fees."
author: "Himanshu"
published: 2026-03-23T15:21:39.000Z
updated: 2026-09-06T05:37:13.745Z
url: https://blog.mybillplease.com/gst-due-dates-april-2026
---
# GST Due Dates April 2026: GSTR-1, GSTR-3B, and Compliance Calendar

## Key takeaways

- Monthly filers file March GSTR-1 by April 11 and GSTR-3B by April 20; QRMP filers file Q4 returns by April 13 and April 22 or 24.
- The March GSTR-3B is the last return of FY 2025-26 and the cleanest place to claim pending ITC and make Rule 42/43 reversals.
- GSTR-7 and GSTR-8 are due April 10, CMP-08 April 18, PMT-06 and ITC-04 April 25, and GSTR-9 for FY 2025-26 by December 31.
- Late returns cost Rs 50 per day plus 18% interest, and a missed GSTR-3B blocks the next month's filing.

## April 2026 GST Compliance Calendar

April is one of the busiest months for GST compliance. It is the first month of the new financial year (FY 2026-27), which means filing the last returns of the previous year (March 2026) plus starting fresh for the new year. Miss a deadline and you pay Rs 50 per day in late fees — or Rs 20 for nil returns.

This calendar covers every GST deadline in April 2026 — from GSTR-1 for March to the annual return timeline. We update this page as the government issues any extensions or changes. Bookmark it and check back at the start of every month.

If you use [myBillPlease](https://www.mybillplease.com/signup), your GSTR-1 and GSTR-3B reports generate automatically from your invoices. Download them a few days before the deadline and file on the GST portal. No manual compilation needed. See our [GSTR-1 filing guide](/gstr-1-filing-guide) and [GSTR-3B filing guide](/gstr-3b-filing-guide) for step-by-step instructions.

## April 2026 GST Due Dates
Complete list of all GST filing and payment deadlines
| Return / Payment | Due Date |
| --- | --- |
| GSTR-7 (TDS) — March 2026 | April 10, 2026 |
| GSTR-8 (TCS by e-commerce operators) — March 2026 | April 10, 2026 |
| GSTR-1 (Monthly filers) — March 2026 | April 11, 2026 |
| GSTR-1 (QRMP — Q4 Jan-Mar 2026) | April 13, 2026 |
| CMP-08 (Composition scheme) — Q4 Jan-Mar 2026 | April 18, 2026 |
| GSTR-3B (Monthly filers) — March 2026 | April 20, 2026 |
| GSTR-3B (QRMP Cat A states) — Q4 Jan-Mar 2026 | April 22, 2026 |
| GSTR-3B (QRMP Cat B states) — Q4 Jan-Mar 2026 | April 24, 2026 |
| PMT-06 (QRMP monthly tax) — April 2026 | April 25, 2026 |
| ITC-04 (Job work) — Q4 Jan-Mar 2026 | April 25, 2026 |
| GSTR-5 (Non-resident taxable persons) — March 2026 | April 20, 2026 |
| GSTR-6 (ISD) — March 2026 | April 13, 2026 |

## For Monthly Filers (Turnover > Rs 5 Crore)

If your aggregate turnover exceeds Rs 5 crore, you must file GSTR-1 and GSTR-3B every month. For April 2026, here are your deadlines:

**GSTR-1 for March 2026 — Due April 11.** This is your last GSTR-1 of FY 2025-26. Ensure all March invoices, credit notes, and debit notes are included. The HSN summary in Table 12 is especially important for the year-end filing. myBillPlease generates this automatically from your invoice data — download Excel and upload to the portal.

**GSTR-3B for March 2026 — Due April 20.** Your final GSTR-3B of FY 2025-26. This is the last chance to claim any pending [input tax credit](/input-tax-credit-guide) for the financial year. ITC not claimed by the March GSTR-3B filing deadline must wait for amendment in the annual return. Reconcile your GSTR-2B carefully before filing.

**Important year-end note:** March GSTR-3B is your last opportunity to make adjustments for the financial year. Any ITC reversals under Rule 42/43, proportional credit corrections, and RCM reconciliation should be done in this return.

## For Quarterly Filers (QRMP Scheme — Turnover ≤ Rs 5 Crore)

If you opted for the QRMP (Quarterly Return Monthly Payment) scheme, April is a filing month for your Q4 (January-March 2026) returns:

**GSTR-1 for Q4 (Jan-Mar 2026) — Due April 13.** This quarterly GSTR-1 covers all sales invoices from January, February, and March 2026. Since this is the final quarter of FY 2025-26, include any missed invoices from earlier months that you reported via IFF (Invoice Furnishing Facility) during Jan and Feb.

**GSTR-3B for Q4 (Jan-Mar 2026) — Due April 22 or 24.** The due date depends on your state — Category A states file by April 22, Category B states by April 24. Check which category your state falls under on the GST portal.

**PMT-06 for April 2026 — Due April 25.** Even though you file GSTR-3B quarterly, you must pay tax monthly. For April 2026 (first month of FY 2026-27), pay using PMT-06 by April 25. Calculate using either the fixed sum method (35% of last quarter's liability) or self-assessment method.

## Other Returns Due in April 2026
- **GSTR-7 (TDS) — April 10** — If your business deducts TDS under GST (government departments, PSUs, certain entities), file GSTR-7 for March 2026 by April 10. Report all TDS deductions with deductee GSTIN and amounts.
- **GSTR-8 (TCS) — April 10** — E-commerce operators (Amazon, Flipkart, etc.) must file GSTR-8 reporting TCS collected from sellers during March 2026. Sellers see this data in their GSTR-2B for reconciliation.
- **CMP-08 — April 18** — Composition scheme dealers file CMP-08 for Q4 (Jan-Mar 2026). This is a simple challan-cum-statement showing total turnover and tax payable at the composition rate (1% for manufacturers, 5% for restaurants).
- **ITC-04 — April 25** — If you sent goods for job work during Q4, file ITC-04 reporting goods sent, received back, and any goods supplied from job worker premises. Required for job work ITC compliance.
- **GSTR-6 (ISD) — April 13** — Input Service Distributors must file GSTR-6 for March 2026, reporting how input tax credit was distributed across branches. Due by the 13th of the following month.
- **Annual Return Timeline** — GSTR-9 (annual return) for FY 2025-26 is due by December 31, 2026. Start compiling data now — the March filings complete your yearly data. Reconcile sales, purchases, and ITC early.

## Late Fee and Interest Rates for Missed Deadlines

Missing GST deadlines is expensive. Here is what you pay:

**GSTR-1 late fee:** Rs 50 per day (Rs 25 CGST + Rs 25 SGST), maximum Rs 10,000 per return. For nil returns: Rs 20 per day, maximum Rs 500.

**GSTR-3B late fee:** Same as GSTR-1 — Rs 50/day up to Rs 10,000. Plus, interest at 18% per annum on the unpaid tax amount from the due date to the actual payment date. On Rs 1 lakh tax paid 15 days late, interest is approximately Rs 739.

**CMP-08 late fee:** Rs 50 per day up to Rs 10,000 for regular returns, Rs 20 per day up to Rs 500 for nil.

> **Cascading impact of a missed deadline**
> 
> Late GSTR-1 filing blocks your customers from seeing your invoices in their GSTR-2B, which prevents them from claiming [input tax credit](/input-tax-credit-guide). This strains B2B relationships. Late GSTR-3B prevents you from filing subsequent months; it cascades into a compliance backlog.

Set calendar reminders for the 8th (prepare data), 10th (file GSTR-1), and 18th (file GSTR-3B) of every month. Or use [myBillPlease](https://www.mybillplease.com/signup) which generates both reports automatically from your invoices — so data is always ready days before the deadline.

> **FY 2025-26 to FY 2026-27: Year-End Checklist**
> 
> April is the transition month between financial years. Here is what to do:
> 
> **1. Reconcile FY 2025-26 data.** Match your sales register with GSTR-1 filings for all 12 months. Match purchase register with GSTR-2B. Any discrepancies should be corrected in the March returns.
> 
> **2. Claim all pending ITC.** ITC for FY 2025-26 invoices must be claimed by November 30, 2026 or the annual return date — but claiming it in March/April is ideal. Don't leave ITC on the table.
> 
> **3. Reset invoice series.** Many businesses reset invoice numbers for the new financial year. In [myBillPlease](https://www.mybillplease.com/signup), update your invoice prefix to include the new FY (e.g., MBP/26-27/001). The system auto-increments from the new starting number.
> 
> **4. Update GST rates.** If any [GST 2.0 rate changes](/new-gst-rates-2026) apply to your products and you haven't updated them yet, do it now. New year, correct rates.
> 
> **5. Review QRMP option.** If your turnover changed and you want to switch between monthly and quarterly filing, the option is available on the GST portal at the start of each quarter. Evaluate which works better for your cash flow.

**Never Miss a GST Deadline — Auto-Generate Returns**
myBillPlease creates your GSTR-1 and GSTR-3B from invoice data. Always ready days before the deadline. Free plan available.

[Get Started Free](/signup)

## FAQ

### What is the due date for GSTR-1 filing in April 2026?

For monthly filers (turnover above Rs 5 crore), GSTR-1 for March 2026 is due by April 11, 2026. For quarterly filers under the QRMP scheme (turnover up to Rs 5 crore), GSTR-1 for Q4 January to March 2026 is due by April 13, 2026. These dates apply to the previous period returns being filed in April. Missing the deadline attracts a late fee of Rs 50 per day up to Rs 10,000 for regular returns and Rs 20 per day up to Rs 500 for nil returns.

### What is the GSTR-3B due date for April 2026?

For monthly filers, GSTR-3B for March 2026 is due by April 20, 2026. For QRMP quarterly filers, GSTR-3B for Q4 January to March 2026 is due by April 22 for Category A states and April 24 for Category B states. Additionally, QRMP filers must pay April 2026 monthly tax via PMT-06 by April 25. The March GSTR-3B is critically important as it is the last return of FY 2025-26 and the final chance to claim any pending input tax credit for the financial year.

### Is April 2026 the last date to claim ITC for FY 2025-26?

Not exactly. The last date to claim ITC for FY 2025-26 invoices is November 30, 2026 or the date of filing the annual return for FY 2025-26, whichever is earlier. However, claiming ITC in the March GSTR-3B (filed in April) is recommended because it keeps your FY 2025-26 books clean. Any ITC claimed after March goes into FY 2026-27 books, which creates additional reconciliation work during annual return preparation. The sooner you claim all eligible ITC, the better.

### What happens if I miss the GSTR-3B deadline in April?

Missing the GSTR-3B deadline triggers two penalties. First, a late fee of Rs 50 per day of delay up to Rs 10,000 per return. For nil returns, the late fee is Rs 20 per day up to Rs 500. Second, interest at 18 percent per annum on the unpaid tax amount calculated from the due date to the actual payment date. Additionally, you cannot file the next month GSTR-3B until the previous month is filed, creating a cascading compliance backlog. Your electronic credit ledger also gets blocked, preventing you from using ITC for subsequent months until you catch up.

### Should I reset my invoice number series in April 2026?

It is common practice but not mandatory to reset invoice numbers at the start of a new financial year. Many businesses use a format like PREFIX/FY/NUMBER, for example MBP/26-27/0001 for the first invoice of FY 2026-27. This makes it easy to identify which financial year an invoice belongs to. Under GST rules, invoice numbers must be sequential within each series. Starting a new series for the new financial year is allowed as long as the new series is independent and sequential. In myBillPlease, you can update your invoice prefix in Settings to include the new financial year.

### What is the difference between Category A and Category B states for QRMP filing?

The GST portal classifies states into two categories for QRMP GSTR-3B quarterly filing dates. Category A states have a due date of the 22nd of the month following the quarter. Category B states have the 24th. Category A includes states like Chhattisgarh, Madhya Pradesh, Gujarat, Maharashtra, Karnataka, Goa, Kerala, Tamil Nadu, Telangana, Andhra Pradesh, and Union Territories of Daman and Diu and Dadra Nagar Haveli, Puducherry, Andaman and Nicobar, and Lakshadweep. Category B includes all remaining states. Check your state category on the GST portal before filing.

### How does myBillPlease help with April GST deadlines?

myBillPlease auto-generates both GSTR-1 and GSTR-3B reports from your invoice data. For the March 2026 filing, all invoices you created in March are automatically classified into B2B, B2C Large, and B2C Small for GSTR-1. Purchase invoices you recorded feed into the ITC calculation for GSTR-3B. Download the reports as Excel, verify against the GST portal auto-populated data, and file. The system also shows outstanding invoices and payment reminders to help with year-end reconciliation. Available on the free plan for basic reports and Starter plan for GSTR-2B reconciliation.