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A business pays an advance to a contractor and deducts TDS only when the final bill is booked, creating late deduction and interest.
TDS is triggered on the earlier of credit or payment, so deduct on the advance and deduct only on the balance at the final bill.
Advance ledger per vendor with TDS deducted, challan reference and the bill against which the advance is adjusted.
One TDS trail per contract whose total equals the rate on the full bill, deposited on time.
Yes. TDS (tax deducted at source) is due at the earlier of two moments: when you credit the vendor’s account in your books, or when you pay them. An advance is a payment, so it triggers TDS by itself. Deduct on the advance, then adjust the same TDS against the final bill so you do not deduct twice.
How does the “earlier of credit or payment” rule work?
Most business TDS sections, including Section 194C (contractors) and Section 194J (professional and technical fees) of the Income-tax Act 1961, say tax is deducted at credit or payment, whichever is earlier. The same timing carries into Section 393 of the Income-tax Act 2025 from 1 April 2026. So if money leaves your bank before the invoice is booked, the deduction happens on the advance.
Limits still apply. For contractors, TDS starts when a single payment is above ₹30,000 or the year’s total is above ₹1,00,000.
Worked example: an advance and a final bill
A furniture shop hires a contractor (a company) for its new showroom at an assumed 2%.
| Date | Event | Amount | TDS at 2% | Paid to contractor |
|---|---|---|---|---|
| 10 April 2026 | Advance paid | ₹1,00,000 | ₹2,000 | ₹98,000 |
| 20 June 2026 | Final bill booked | ₹4,00,000 | ||
| 20 June 2026 | Balance after advance | ₹3,00,000 | ₹6,000 | ₹2,94,000 |
| Total | ₹4,00,000 | ₹8,000 | ₹3,92,000 |
Check: ₹4,00,000 × 2% = ₹8,000, the same as ₹2,000 + ₹6,000. The ₹2,000 is deposited by 7 May and the ₹6,000 by 7 July.
How are different advance situations treated?
| Situation | TDS treatment |
|---|---|
| Advance paid by bank transfer | Deduct on the advance |
| Advance paid in cash | Deduct on the advance; also watch the cash limit under Section 40A(3) |
| Advance adjusted against a bill in the same month | You may deduct once on the bill, as both dates fall before the same deposit date |
| Advance cancelled and refunded | TDS already deposited stays as the vendor’s credit; ask your CA about any correction |
| Advance below the single-payment limit | No TDS yet, but count it towards the yearly total |
What if the invoice arrives after the advance: which date matters?
The first event matters. If you pay on 10 April and the invoice comes on 20 June, the 10 April payment triggers TDS on the advance. If you miss it, interest runs under Section 201(1A) of the 1961 Act at 1% per month from the date TDS was due to the date you actually deduct it.
How does the vendor’s Form 26AS show it?
The vendor sees two separate entries in their TDS credit statement (Form 26AS, or Form 168 from tax year 2026-27): ₹2,000 in the April to June quarter for the advance and ₹6,000 in the same quarter for the balance. If the advance and bill fall in different quarters, the entries appear in different quarters. Tell the vendor, so they do not think a credit is missing.
What to read next
- Next in the timing series: why TDS is due on a March provision.
- Contractor rates and limits: TDS on contractor payments under Section 194C.
- To catch missed advances each month, use the monthly and quarterly TDS runbook.
TransactIG reconciles TDS against your bank payments and books, so an advance paid without deduction shows up in the exception queue.