ExpressGST || GSTR-1 IFF Filing Process
The Invoice Furnishing Facility (IFF) is an optional feature for small taxpayers who have opted for quarterly GST returns under the QRMP scheme. Using the IFF, taxpayers can furnish details of outward supplies for the first two months of the quarter.
Below is a step-by-step guide to filing GSTR-1 IFF using ExpressGST:
Step 1: Open GSTR-1 Summary Details
- Navigate to the Return Summary page, which lists various GSTR filings such as GSTR-1, GSTR-3B, GSTR-9 and GSTR-9C.
- Under GSTR-1 IFF, click on Prepare IFF to open the GSTR-1 summary details page.
Step 2: Import Data
- Select the file containing your GSTR-1 data.
- Click Import to upload the file.
- A confirmation window will appear, displaying the imported GSTR-1 data. Click Okay to proceed.
Step 3: Review and Edit GSTR-1 Details
- Review and verify the details related to outward supplies and any amendments.
- Ensure all data is accurate and complete before proceeding.
Invoice Status Categories:
- Uploaded: Invoices match the portal records or are already uploaded.
- Ready For Upload: Invoices are not yet uploaded to the portal but are ready.
- Error: Data errors found. Click on the Error option to review and correct them.
- Warning: Mismatch detected between taxable and tax amounts. Requires attention.
Note: You can download an Error Report by clicking on the Errored Data option.
Step 4: Upload Details to GST Portal
- Click on the Save Data on Portal option.
- Click on Upload on GSTN and wait for the upload to complete. The status will update to Successful once completed.
Step 5: File the IFF
- Choose one of the two methods to file your return.

File with EVC (Electronic Verification Code):
This method uses a code sent to your registered mobile or email for verification.
- Click on File IFF (EVC & DSC Available) and select File with EVC.
- A prompt will appear; click Yes to proceed.
- The GST portal will open, where you can finalize the filing.
- Enter the OTP sent to your registered mobile or email on the GST portal.
- After OTP verification, the GSTR-1 return is submitted, and an Acknowledgment Reference Number (ARN) is generated.

File with DSC (Digital Signature Certificate):
This method is mandatory for companies and LLPs.
- Click on File IFF (EVC & DSC Available) and select File with DSC.
- A prompt will appear; click Yes to proceed.
- Ensure the DSC utility is installed, and the DSC token is connected to your system.
- On the GST portal, select the appropriate registered DSC.
- Enter the PIN or password associated with your DSC.
- Once authenticated, the GSTR-1 return is submitted, and an Acknowledgment Reference Number (ARN) is generated.
Notes: After submission, your GSTR-1 return is successfully filed, regardless of whether you used EVC or DSC. Retain the ARN for future reference as proof of submission.
By following these steps, you can efficiently file your GSTR-1 return using ExpressGST and the Invoice Furnishing Facility (IFF).
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