TDS

TDS explained: how tax deducted at source works

What TDS is, who deducts it and why, how Form 16 and Form 16A fit in, and how to reconcile TDS with Form 26AS so mismatches do not cost you.

8 min readLast reviewed: 15 October 2026For: Salaried people, freelancers and small deductors

Key points

  • TDS is tax collected in advance by deducting it from certain payments at the time they are made.
  • The payer (deductor) withholds the tax and deposits it against your PAN; you get credit for it.
  • Form 16 is the TDS certificate for salary; Form 16A is for non-salary payments like interest or fees.
  • All TDS against your PAN appears in Form 26AS — reconcile your certificates against it.
  • A mismatch usually means the deductor has not deposited or reported correctly; raise it with them.

TDS stands for tax deducted at source. The idea is simple: instead of waiting for you to pay all your tax at the end of the year, the law requires certain payers to deduct a slice of tax when they pay you and deposit it with the government on your behalf. It keeps tax collection steady and creates a record of your income.

How it works

  1. A payer (the deductor) makes a payment to you — salary, interest, professional fees, rent, and so on.
  2. They deduct tax at the applicable rate before paying you the balance.
  3. They deposit the deducted tax with the government against your PAN.
  4. They file a TDS return and issue you a TDS certificate.
  5. The credit shows up in your Form 26AS, and you claim it when you file.

Crucially, TDS is your tax paid in advance, not an extra charge. At filing, your actual tax is computed and the TDS is set off against it.

Form 16 and Form 16A

  • Form 16 — the TDS certificate for salary, issued by your employer.
  • Form 16A — the TDS certificate for non-salary payments such as bank interest or professional fees, issued by the respective deductor.

Both are generated through TRACES, so their figures tie back to what the deductor reported — which is why they should match your Form 26AS.

Reconciling with Form 26AS

Your Form 26AS is the consolidated record of all TDS/TCS and taxes against your PAN. Before filing, line up each certificate against it:

  • Does every TDS entry in Form 16/16A appear in 26AS?
  • Do the amounts and the deductor’s details match?
  • Is the income shown consistent with your AIS?

When there is a mismatch

Mismatches are common and usually fixable. Typical causes and actions:

SymptomLikely causeWhat to do
TDS in certificate not in 26ASDeductor did not deposit / reportAsk the deductor to correct their TDS return
Wrong PAN against the entryDeductor used an incorrect PANGive the correct PAN; ask for a correction
Amount differsData-entry or timing issueReconcile dates; ask the deductor to revise

You can only claim TDS that appears against your PAN. So if an entry is missing, the fix is to get the deductor to correct their return — not to simply claim it anyway.

Not tax advice

General information only. TDS rates, thresholds and the certificate process change — confirm current details on the Income Tax Department portal and TRACES. See our Form 26AS, AIS and TIS guide to go deeper.

Frequently asked questions

Is TDS an extra tax?
No. TDS is not an additional tax — it is your own tax collected in advance. When you file, your total tax is computed and the TDS already deducted is credited against it. If too much was deducted, you get a refund; if too little, you pay the balance.
Why is there TDS on my bank interest?
Banks deduct TDS on interest above a threshold. It is credited against your PAN and shown in Form 26AS and AIS. If your total income is below the taxable limit, you may be able to submit Form 15G/15H to the bank to avoid deduction — check eligibility and the current rules first.
The TDS in my certificate is not showing in Form 26AS. What should I do?
Do not file assuming the credit will appear. A missing entry usually means the deductor has not deposited the tax or filed their TDS return correctly. Contact the deductor and ask them to correct it. Only the TDS that appears against your PAN can be claimed.

Official sources

Not professional advice

This guide is general information for understanding only — not personalised tax, legal or financial advice. Tax rules change; always confirm figures on official sources and consider a qualified professional before acting. Union of Taxpayers is an independent platform and not a government body.