How Tax and GST Records Should Work Together
Income tax and GST are filed on different portals, on different timelines, by different teams — but they describe the same business. When the two don’t reconcile, both invite scrutiny.
Why Two Filing Systems Create One Risk
GST turnover and income tax turnover describe the same underlying revenue, reported to two different authorities that increasingly cross-check each other’s data. A gap that looks harmless inside one system reads as a discrepancy the moment both are compared.
Matching Turnover Across GST and Income Tax
The turnover declared in your GSTR-9 annual return should reconcile with the revenue in your profit and loss account, and both should tie back to what shows in your Annual Information Statement. A mismatch here is one of the most common triggers for a scrutiny notice.
- Reconcile GSTR-9 turnover against the audited P&L every year
- Explain timing differences — advances, exports, exempt supplies — in writing
- Check AIS turnover figures against both GST and books before filing
- Keep a standing reconciliation statement, not a one-time exercise
Reconciling ITC with Books and TDS
Input tax credit claimed under GST should tie back to purchase entries in the books, which in turn should align with TDS deducted on those same vendor payments under income tax. When these three don’t match, each filing raises a question the others can’t answer on their own.
- Match ITC claims to purchase register entries monthly
- Cross-check vendor TDS deductions against the same invoices
- Flag any vendor where GST and TDS records disagree on the amount
- Resolve mismatches within the month, not at year-end
Where Mismatches Usually Originate
Most reconciliation gaps trace back to a small set of recurring causes, each fixable once identified.
Building a Monthly Reconciliation Routine
Reconciliation is far cheaper as a monthly habit than as an annual investigation.
- Reconcile GST turnover against books at the end of every month
- Match TDS deducted against GST-reported vendor payments
- Review debit and credit notes across both systems together
- Document explanations for any recurring timing difference
A Records System That Serves Both Filings
The businesses that never dread a cross-departmental query are the ones that maintain one records system built to answer both filings, not two separate ones stitched together at year-end.
- Days 1–30: Map every field that both GST and income tax filings require
- Days 30–60: Consolidate books, GST, and TDS data into one reconciled source
- Days 60–90: Build the monthly close routine that keeps it that way
Once the two systems are built to agree by default, reconciliation stops being a project and becomes a by-product of how the books are kept.
"A business with two sets of numbers that don’t agree doesn’t have two problems — it has one, twice."
N D Savla & Associates — Advisory Practice