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—gstr-1a-amendment-outward-supply-india [2026/07/22 17:47] (current) – created - external edit 127.0.0.1
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 +{{htmlmetatags>metatag-description=(GSTR-1A lets a supplier add or fix same-period outward supplies after filing GSTR-1 and before GSTR-3B, keeping your locked GSTR-3B liability accurate.)&metatag-keywords=(GSTR-1A, GST amendment return, GSTR-1 correction, GSTR-3B lock)&metatag-robots=(index,follow)&metatag-og:title=(GSTR-1A: Fix GSTR-1 Errors Before GSTR-3B)&metatag-og:description=(GSTR-1A lets a supplier add or fix same-period outward supplies after filing GSTR-1 and before GSTR-3B, keeping your locked GSTR-3B liability accurate.)&metatag-og:type=(article)}}
 +====== GSTR-1A: Fix GSTR-1 Errors Before GSTR-3B 2026 ======
 +
 +
 +
 +{{ :social:auto:gstr-1a-amendment-outward-supply-india.png?direct&1200 |GSTR-1A: Fix GSTR-1 Errors Before GSTR-3B 2026 — RTI Wiki}}
 +
 +<WRAP center round info 95%>
 +**Quick Reply:** GSTR-1A lets a supplier add or fix same-period outward supplies after filing GSTR-1 and before GSTR-3B, keeping your locked GSTR-3B liability accurate.
 +</WRAP>
 +
 +^ Feature ^ GSTR-1 ^ GSTR-1A ^ GSTR-3B ^
 +| Purpose | Declare all outward supplies (sales) for the tax period | Add or amend outward-supply records of the same period already filed in GSTR-1 | Summary return that pays the net tax liability |
 +| Timing | By the monthly or quarterly due date (11th or 13th) | After GSTR-1 is filed and before GSTR-3B of the same period | By the 20th (or 22nd/24th for QRMP) of the next month |
 +| Mandatory? | Yes | No, fully optional | Yes |
 +| Can add missed invoices? | Yes | Yes, for the current period only | No |
 +| Can amend recipient GSTIN? | Yes (in a later period) | No, never | No |
 +| How often | One per period | One per period | One per period |
 +| Feeds | GSTR-3B and recipient GSTR-2B | GSTR-3B and recipient GSTR-2B | Cash and credit ledgers |
 +
 +If you filed GSTR-1 in a hurry and then spotted a wrong taxable value, a missed sales invoice, or a tax-rate slip, GSTR-1A is the return that lets you fix it for the same tax period before you file GSTR-3B. It is an optional amendment facility that keeps your auto-populated GSTR-3B liability correct, which matters now that the GSTR-3B tax tables are locked. This guide explains exactly when to use it, what it can and cannot change, and how to file it on the portal.
 +
 +===== When you need GSTR-1A =====
 +
 +GSTR-1A is the right tool whenever the error sits in the outward-supply data of the **current** period and you have already filed GSTR-1 but not yet GSTR-3B. Typical situations include:
 +
 +  * You forgot to report a B2B invoice issued during the period.
 +  * You entered a wrong taxable value, tax rate, or place of supply.
 +  * You reported a B2C supply that should have been B2B, or the reverse.
 +  * You missed a credit note or debit note of the current period.
 +  * The auto-populated liability in GSTR-3B looks wrong and you traced it to a GSTR-1 mistake.
 +
 +Because GSTR-3B tax tables can no longer be hand-edited, GSTR-1A has become the practical correction window. The facility was reintroduced by Notification No. 12/2024-Central Tax dated 10 July 2024, which inserted a proviso to Rule 59(1) of the CGST Rules, and it is available from the July or August 2024 return period onward.
 +
 +===== What you CAN amend through GSTR-1A =====
 +
 +  * Add any outward-supply record of the current period you missed in GSTR-1.
 +  * Correct the taxable value, tax amount, or tax rate of a reported invoice.
 +  * Fix the place of supply or the supply type (B2B, B2C, exports, SEZ).
 +  * Amend current-period credit notes and debit notes.
 +  * Adjust advances received and adjustments of advances for the same period.
 +
 +===== What you CANNOT amend through GSTR-1A =====
 +
 +  * You **cannot** change the recipient GSTIN. Per the GST portal FAQ, a wrong counter-party GSTIN must be corrected in the GSTR-1 of a following tax period, not in GSTR-1A.
 +  * You cannot fix any earlier period. GSTR-1A is strictly for the current period; older mistakes go through the amendment tables of a regular GSTR-1.
 +  * You cannot file more than one GSTR-1A for a single tax period.
 +  * You cannot file GSTR-1A after GSTR-3B for that period is filed. Once GSTR-3B goes in, the window shuts.
 +
 +===== Step-by-step: filing GSTR-1A on the portal =====
 +
 +  - Log in to the GST portal and open **Services > Returns > Returns Dashboard**.
 +  - Select the financial year and the relevant tax period, then file your GSTR-1 first. GSTR-1A only opens after the GSTR-1 due date or the actual filing date, whichever is later.
 +  - On the dashboard, locate the **GSTR-1A** tile, which appears once GSTR-1 is filed and stays open until GSTR-3B is filed.
 +  - Click **Prepare Online**. The relevant tables mirror GSTR-1 so you can add new records or amend existing ones.
 +  - Enter the corrected or additional invoices. Leave the recipient GSTIN field as originally reported, since it cannot be changed here.
 +  - Use **Generate Summary** to review the revised totals and confirm the net effect on your liability.
 +  - File GSTR-1A with DSC or EVC. The corrected figures then flow into the auto-populated GSTR-3B.
 +  - Proceed to file GSTR-3B for the same period, where the liability now reflects both GSTR-1 and GSTR-1A.
 +
 +===== How it affects the recipient's ITC =====
 +
 +Amendments and additions you make through GSTR-1A do not vanish for your buyer. They flow to the recipient, but generally in the **following** period's GSTR-2B rather than the same one. So if you add a missed June invoice through June GSTR-1A, your buyer typically sees that input tax credit reflected in their July GSTR-2B. This is why prompt use of GSTR-1A protects your customer relationships: a missed invoice fixed quickly still lets the buyer claim credit, just one cycle later. Buyers tracking these movements should understand the [[https://righttoinformation.wiki/gst-invoice-management-system-ims-itc-india|GST Invoice Management System and ITC]], since IMS is where accepted, rejected, and pending records ultimately settle a recipient's credit.
 +
 +===== The GSTR-3B lock context =====
 +
 +From the July 2025 tax period (the return filed in August 2025), the GST Network hard-locked the auto-populated liability in GSTR-3B Tables 3.1 and 3.2. These tables now draw straight from GSTR-1, IFF, and GSTR-1A, and the taxpayer can no longer overwrite them by hand. Before this change, many businesses simply typed the correct figure into GSTR-3B and moved on. That shortcut is gone. The only clean way to correct an outward-supply number for the current period is GSTR-1A; otherwise the mistake either gets paid as-is or waits for a next-period amendment. Treat GSTR-1A as a routine pre-3B check rather than an emergency tool.
 +
 +===== Common mistakes to avoid =====
 +
 +  * **Trying to fix the recipient GSTIN here.** It will not work; plan a next-period GSTR-1 amendment instead.
 +  * **Waiting too long.** Once GSTR-3B is filed, GSTR-1A for that period is permanently closed.
 +  * **Expecting same-period ITC for the buyer.** The credit generally appears in the buyer's next GSTR-2B.
 +  * **Using it for old errors.** Earlier-period corrections belong in regular GSTR-1 amendment tables, not GSTR-1A.
 +  * **Skipping the summary.** Always generate and read the summary so the revised liability is what you expect before filing GSTR-3B.
 +
 +A consultancy such as Sunrise Advisory, for example, that issued a ₹50,000 invoice but typed ₹5,000 in GSTR-1 can add the corrected value through GSTR-1A the same month, so its locked GSTR-3B liability is right the first time.
 +
 +===== Frequently asked questions =====
 +
 +==== Is filing GSTR-1A mandatory? ====
 +No. GSTR-1A is entirely optional. You file it only when you need to add or amend an outward-supply record of the current period before filing GSTR-3B.
 +
 +==== Can I file GSTR-1A after submitting GSTR-3B? ====
 +No. The GSTR-1A window for a period closes the moment you file GSTR-3B for that same period. After that, corrections move to the next period's GSTR-1.
 +
 +==== How many times can I file GSTR-1A in a tax period? ====
 +Only once per tax period. Plan all your corrections together so the single GSTR-1A captures every change you need for that period.
 +
 +==== Will my buyer get the input tax credit if I add an invoice through GSTR-1A? ====
 +Yes, but generally in the following period's GSTR-2B rather than the current one. The credit still reaches the buyer, just one cycle later.
 +
 +==== Does GSTR-1A work for QRMP quarterly filers? ====
 +Yes. QRMP taxpayers who file GSTR-1 quarterly can use GSTR-1A to amend quarterly outward supplies before filing the quarterly GSTR-3B, subject to the same one-per-period and pre-3B rules.
 +
 +==== Can GSTR-1A change the place of supply? ====
 +Yes. Place of supply, taxable value, tax rate, and supply type can all be corrected through GSTR-1A. Only the recipient GSTIN is off limits.
 +
 +===== Related guides and tools =====
 +
 +  * [[https://righttoinformation.wiki/gstr-7-tds-under-gst-deductor-return-india|GSTR-7: TDS under GST deductor return]]
 +  * [[https://righttoinformation.wiki/gstr-9-annual-return-filing-guide-india|GSTR-9 annual return filing guide]]
 +  * [[https://righttoinformation.wiki/apply-gst-registration-2026|How to apply for GST registration in 2026]]
 +  * [[https://righttoinformation.wiki/tools/ai-rti-draft-app.html|AI RTI draft tool]] for filing an RTI on a stuck GST grievance
 +  * [[https://righttoinformation.wiki/book|The RTI Playbook]] for using the Right to Information Act to push pending tax matters
 +
 +===== Sources =====
 +
 +  * Notification No. 12/2024-Central Tax dated 10 July 2024, proviso to Rule 59(1), CGST Rules.
 +  * GST portal FAQs on Form GSTR-1A, tutorial.gst.gov.in.
 +  * GSTN advisory on hard-locking of auto-populated GSTR-3B liability from July 2025.
 +  * CBIC introduction of Form GSTR-1A, 2024 CGST Amendment Rules.
 +
 +{{tag>gst gst gstr fix errors}}
  
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