Starting from the January 2026 tax period, the Goods and Services Tax Network (GSTN) will implement enhancements to the GSTR-3B form, focusing on interest computation and liability reporting. Interest will be auto-computed in Table 5.1 of GSTR-3B by considering the minimum cash balance in the Electronic Cash Ledger from the return filing due date to the tax payment date, as per Rule 88B(1). This interest will be non-editable downward, although taxpayers can increase it based on self-assessment. The auto-computed interest will indicate the minimum payable interest.
Additionally, the tax liability breakup table will be auto-populated for GSTR-3B filings from January 2026, using document dates reported in GSTR-1, GSTR-1A, or IFF from previous periods where tax is paid in the current return. This aims to streamline the reporting process. Moreover, the system will offer more flexibility in Input Tax Credit (ITC) utilisation by allowing payment of IGST liability using CGST and SGST ITC in any sequence, once IGST ITC is fully used, as noted in Table 6.1.
For taxpayers whose GST registration has been cancelled, if they file their final GSTR-3B late, the applicable interest will be recovered through the Final Return (GSTR-10). These updates are designed to enhance efficiency and accuracy in GST compliance.
Key Updates –
- Revised Interest Computation in Table 5.1 of GSTR-3B
From the January 2026 tax period onwards, interest will be auto-computed by giving credit for the minimum cash balance available in the Electronic Cash Ledger from the due date of return filing till the date of tax payment, in line with Rule 88B(1). - Non-Editable Auto-Populated Interest
The interest auto-populated in Table 5.1 will be non-editable downward. Taxpayers may, however, revise the amount upward based on self-assessment. The system-computed interest represents the minimum payable interest. - Auto-Population of Tax Liability Break-up Table
For GSTR-3B filed from January 2026 onwards, the portal will auto-populate the tax liability breakup table based on document dates reported in GSTR-1 / GSTR-1A / IFF pertaining to earlier tax periods, where tax is paid in the current return. - Flexible Cross-Utilisation of ITC in Table 6.1
Once IGST ITC is fully utilised, the system will allow payment of IGST liability using CGST and SGST ITC in any sequence, providing greater flexibility in ITC utilisation. - Interest Recovery through GSTR-10 for Cancelled Taxpayers
In cases where a cancelled taxpayer files the last applicable GSTR-3B belatedly, the applicable interest will now be collected through the Final Return (GSTR-10).
https://tutorial.gst.gov.in/downloads/news/advisory_on_interest_calculator.pdf
