GSTR-3B Filing Update Mandatory Tax Liability Breakup Explained
Why are GSTR-3B filings getting delayed
Many taxpayers are facing issues while filing GSTR-3B from the February 2026 tax period onwards.
The reason is a new system requirement to confirm the Tax Liability Breakup before filing. This is a procedural step, but it has become mandatory for completing the return.
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What is Tax Liability Breakup in GSTR-3B
As per Section 50 of the CGST Act, 2017, interest applies when tax for a previous period is paid in a later period.
To track this, GST introduced the Tax Liability Breakup tab in GSTR-3B.
This helps in
- Identifying delayed tax payments
- Tracking interest liability
- Ensuring correct period-wise reporting
What has changed from February 2026
GSTN has updated the system to improve compliance tracking.
- Tax liability breakup is now auto-populated
- Data is taken from GSTR-1, GSTR-1A and IFF
- Applies when past-period supplies are reported in the current period
New mandatory step before filing GSTR-3B
Taxpayers must complete the following steps
- Offset tax liability
- Open the Tax Liability Breakup tab
- Click SAVE to confirm details
- Proceed with filing using EVC or DSC
If this step is not completed, GSTR-3B cannot be filed.
Current system issue
GSTN has acknowledged a practical concern raised by taxpayers.
- Confirmation is required in all cases
- This includes cases where no previous period liability exists
- Ideally, it should apply only where relevant
The issue is under resolution.
Interim compliance requirement
Until the issue is resolved, taxpayers should
- Open the Tax Liability Breakup tab
- Click SAVE even if no changes are required
- Proceed with filing
This is a temporary but mandatory step.
Practical impact on businesses
This update introduces
- An additional step in return filing
- Risk of delay if overlooked
- Increased dependency on system validation
Businesses should ensure
- Proper reconciliation between GSTR-1 and GSTR-3B
- Timely reporting of invoices
- Internal review before filing returns
Expert insight from Preface Consulting
This update reflects a shift towards stronger system-based compliance.
- Increased linkage between outward supply reporting and tax payment
- Greater focus on interest tracking
- Reduced flexibility for delayed reporting
Businesses should strengthen internal GST processes to avoid future risks.
Conclusion
The Tax Liability Breakup confirmation is now a required step in GSTR-3B filing.
Until GSTN updates the system, taxpayers must follow this process to avoid filing delays.
How Preface Consulting can help
Preface Consulting supports businesses with
- GSTR-3B filing and review
- GST reconciliation
- Advisory on system updates
End to end compliance support