A transition checklist for salary, vendor, rent, professional-fee, and contractor TDS around March 2026 and April 2026 under old and new law references.
For payroll managers and finance teams handling vendor payments, the March-April 2026 window is genuinely tricky. The Income-tax Act, 2025 and Finance Act 2025 have shifted section references and compliance timelines, and both old and new law touchpoints can land on the same desk in the same week. This note is intended to help you sort that out — it is not a substitute for a case-specific review of complex transactions.
What actually changes at this boundary
The risk in this transition is not just renumbered sections. It runs through every step of the TDS chain: which month a payment falls in, when deduction happens, when the challan is deposited, which return period captures it, and which certificate the deductee eventually receives.
| Point | Practical meaning |
|---|---|
| 1 | March 2026 and April 2026 payments should be tagged by date and period. |
| 2 | Payroll, vendor, and rent TDS should not be mixed in one transition bucket. |
| 3 | Challans, returns, certificates, and books should reconcile monthly. |
Why this period is particularly sensitive
The current AY 2026-27 return, Tax Year 2026-27 current-period compliance, unresolved notices from earlier years, and newly notified forms can all arrive in the same month. That concentration makes year-selection errors easy to make. A clean file should clearly show the period, the applicable law reference, the portal form used, the nature of the payment or return, and the supporting evidence behind the position taken.
A practical scenario
Consider a March invoice that gets paid in April. The deductor needs to check whether the deduction timing follows the March billing date or the April payment date, then ensure the challan, accounting entry, and TDS return all tell the same story. Mixing up the period here creates credit mismatches for the vendor and correction work for the deductor.
Records to maintain
- March and April payment ledgers, separated by category
- Payroll registers showing salary period and deduction date
- Vendor invoices with payment date and deduction details
- TDS challans with BSR code, serial number, and deposit date
- TDS return workings and filed acknowledgements
Split March and April withholding by transaction date
- Separate March payroll and vendor entries from payments or credits arising in April 2026.
- Map each item to the applicable period, provision, rate check, challan, and return form.
- Reconcile payroll registers and vendor ledgers with deductions, deposits, and certificates.
- Maintain separate period workbooks so a correction does not alter the wrong quarter or law reference.
Official sources
| Reference | Link |
|---|---|
| Income Tax Department - TDS compliance under 2025 Act | Open source |
| Income Tax Department - New Act transition FAQs | Open source |
Errors that tend to show up in this period
- Pulling up an old form number without verifying it is the currently notified form for the applicable period.
- Posting March TDS data into April returns, or vice versa, without checking the deduction date rule.
- Treating a section headline — rate, threshold, or slab — as a complete computation rather than a starting point.
- Depositing or reporting March and April deductions before matching payroll or vendor ledgers to challans, statements, and the correct deduction period.
- Not retaining the official source and computation note that supported the decision taken.
Where TDS March transition needs a document-based review
Businesses should organise payment records, identify which TDS period applies to each transaction, resolve challan mismatches, and build a filing-ready archive. Obtain advice on complex facts such as non-resident vendors, large professional fees, or multiple payment legs before depositing or reporting tax under the wrong period.
TDS March transition: Before closing the TDS March transition file
Confirm the applicable period and law reference. Collect supporting documents. Prepare a short computation note. Verify the payment or return route. And once filed or deposited, preserve the acknowledgement and working papers in a single accessible folder.