TDS on Salary: How Section 192 Actually Works (2026)

If you are a salaried employee in India, there is a single line on your payslip — "TDS" or "Income Tax" — that quietly removes tens of thousands of rupees from your monthly pay. Your employer is legally required to do this under Section 192 of the Income Tax Act. This guide walks through exactly how they calculate that number, how your investment declarations influence it, what Form 16 is really for, and how to recover excess TDS when your employer deducts more than needed.

What is TDS on salary?

TDS stands for "Tax Deducted at Source." Under Section 192, every employer paying salary income that exceeds the basic exemption limit (Rs. 3 lakh under the New Regime default) must deduct income tax every month and deposit it with the government on your behalf. At the end of the year, your employer issues Form 16 summarising the year's salary, deductions, and TDS paid — and you then claim credit for this TDS when you file your ITR.

Unlike TDS on fixed deposits or professional fees (Section 194/194J), Section 192 TDS is calculated on your estimated full-year tax liability, not on a flat percentage. That is why two colleagues at identical salaries can have very different TDS if one has declared home loan interest and the other has not.

How employers calculate monthly TDS

1. Estimate annual salary — Basic + HRA + LTA + special allowances + bonus + perquisites.
2. Apply standard deduction — Rs. 50,000 for Old Regime, Rs. 75,000 for New Regime (salaried).
3. Apply declared exemptions and deductions — HRA exemption, 80C, 80D, 80CCD(1B), home loan interest, etc. (Old Regime only).
4. Apply tax slabs — compute tax liability for the full year.
5. Add 4% cess on the tax amount.
6. Divide by 12 — that's your monthly TDS. Any shortfall from earlier months is spread across remaining months.

Investment declarations (Form 12BB)

At the start of each financial year your employer asks you to submit Form 12BB — essentially a plan of your likely deductions. The amounts you enter there reduce your monthly TDS. The twist: these numbers are provisional. In January or February the employer asks for actual proofs — rent receipts, insurance premium certificates, 80C investment statements, home loan interest certificate — and adjusts TDS accordingly.

Practical tips:

• Declare only what you will actually invest. Over-declaring inflates cash flow but causes a painful March TDS recovery.
• Under-declaring is equally expensive — you give the government an interest-free loan until your refund arrives six months after filing.
• If you join mid-year, give your new employer Form 12B with earlier employer's salary and TDS to avoid double-deduction or under-deduction.

Form 16 — your tax summary

Form 16 has two parts:

• Part A — Issued from the TRACES portal, shows PAN, TAN, and quarterly TDS deposits.
• Part B — Prepared by employer, shows gross salary, exemptions, deductions, computed tax, and actual TDS.

Your employer must issue Form 16 by 15 June of the following financial year. Cross-check Form 16 Part A against Form 26AS (available on the income tax portal) — the TDS numbers must match. If they don't, raise it with HR immediately; this is where lakhs of rupees disappear every year due to wrong PAN on TDS returns.

TDS for employees with multiple employers

If you switch jobs during the year, both employers apply the basic exemption limit independently. Without Form 12B disclosure, your combined annual salary often crosses the slab boundaries and the total TDS falls short of actual tax. The shortfall becomes "self-assessment tax" payable before filing the ITR — often a shock of Rs. 50,000-2 lakh depending on salary.

When joining a new employer mid-year, give them (a) your earlier Form 16 or Form 12B, (b) TDS certificates already issued, and (c) any rent-free or perquisite details. They will consolidate and apply the correct TDS.

Recovering excess TDS

If your employer deducted more TDS than your actual liability (common when you forget to declare an exemption on time, or when a bonus that was estimated never came through), the excess is recovered only through your ITR refund. The process:

1. File ITR with actual income and deductions.
2. The system computes your real tax and compares with total TDS shown in Form 26AS/AIS.
3. Refund is processed after ITR processing — typically 15-60 days for pre-validated bank accounts with e-verified returns.

Old vs New Regime impact on TDS

From FY 2023-24, the New Tax Regime is the default for TDS purposes. If you want your employer to compute TDS under the Old Regime (because of HRA, home loan, etc.), you must explicitly declare the Old Regime at the start of the year. This choice is only for TDS calculation — you can still switch back to the New Regime when filing ITR.

Salaried employees without business income can switch regimes every year. Those with business income can switch only once in their lifetime.

What if your employer did not deduct TDS?

Small employers sometimes fail to deduct TDS on salary. This does not let you off the hook — you are still liable to pay the tax, and possibly interest under Section 234B/234C. Use the advance tax mechanism (four instalments in June, September, December, and March) to discharge the liability yourself.