Difference in tax comparison report


This query is : Resolved 

Quick Summary
A user found a difference in the GSTR-1 vs GSTR-3B comparison report during GST audit, though individual monthly values matched. The mismatch appeared as a doubled cumulative amount for October 2025. Suggestions included checking amendments, adjustments, and reconciliation logic.

04 July 2026 Sir
while checking book of account and gst statement for audit purpose , it found that one month there is difference in GSRT1 & GSRT3B. in comparison report . But individual checking each there is no difference in fount , only in comparison statement show there is difference and cumulative is showing .
Please advise
Binu

04 July 2026 Check Amendments and Adjustments: Discrepancies often arise from amendments made in subsequent months that impact the cumulative totals but may not be immediately obvious when spot-checking individual months.

Analyze Reconciliation Reports: Review the specific "comparison report" logic, as these tools sometimes aggregate data differently based on the filing date versus the tax period.

Re-run Reconciliation: If individual months are confirmed as correct, re-run the reconciliation process to ensure that all credit notes, debit notes, or late filings were correctly captured in the software’s cumulative calculation.

07 July 2026 sir,
Thanks for spending time for me .
I got this report from after login-return - tax liabilites& comparison . This mistake found by me in oct 2025 . Exactly double amount . I have not done any such amendment in my memory .
I check gst 1 and gstr 3b value is correct.
I have no other software for checking this and I not know " re- run reconciliation ".
Please advise
Binu

03 November 2026 Hi Binu,

Adding to the previous points, here are a few specific things to check regarding that October 2025 anomaly:

Check for Table 9A / Amendments: Even if you don't recall making an amendment, check if any previous period amendment (Table 9A of GSTR-1) was pushed or auto-adjusted in the October return cycle. This frequently skews cumulative portal views.

Portal Caching / System Glitch: The GSTR-1 vs GSTR-3B comparison report on the GST portal frequently suffers from dynamic computation lag where cumulative totals temporarily double. If your individual monthly tax liability and cash/credit ledger offsets match your books of accounts, you can safely rely on your books and filed returns.

Download Offline JSON/Excel: Instead of the online dashboard view, try downloading the detailed Excel/JSON files for October from the portal to see if a specific table row is triggering the duplicate computation.

Since your individual monthly filings are verified and correct, this is typically a portal-side reporting quirk rather than an actual tax short-payment.


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