Every salaried Indian has TDS deducted from their salary every month — yet most have no idea how their employer arrives at that number, what Form 16 actually contains, or how to legally reduce the TDS deducted each month by submitting the right proofs at the right time. This guide explains the complete TDS on salary process — how it is calculated, how to read Form 16 and 26AS, what proofs to submit and when, and how to claim a refund if too much was deducted.
TDS (Tax Deducted at Source) on salary is the mechanism by which your employer deducts income tax from your monthly salary and deposits it with the government on your behalf — before crediting the net amount to your bank account. This is governed by Section 192 of the Income Tax Act.
The logic is simple: instead of waiting for you to pay your entire annual tax liability at year-end, the government collects it throughout the year in monthly instalments via your employer. This ensures steady tax revenue for the government and prevents large year-end tax bills for employees.
TDS vs advance tax: TDS is deducted by your employer — you have no direct action needed. Advance tax is self-assessed tax paid directly by you when you have income beyond salary (freelance, capital gains, rental income). If your total tax liability after TDS exceeds ₹10,000, you must also pay advance tax in quarterly instalments. Most pure salaried employees with no other income do not need to worry about advance tax.
The employer adds up all salary components for the full year: basic salary, HRA, special allowances, bonus, overtime, and any other taxable components. This is the starting gross total income from salary for the year.
Deduct tax-exempt components: HRA exemption (if employee submits rent proof), LTA (Leave Travel Allowance — twice in a 4-year block), and other specific allowances. The standard deduction of ₹75,000 (new regime) or ₹50,000 (old regime) is also subtracted here automatically.
Under the old regime: subtract 80C investments (up to ₹1.5L), 80D medical insurance premiums, NPS contribution 80CCD(1B) (up to ₹50K), home loan interest Section 24b (up to ₹2L), and any other deductions the employee has declared and provided proof for. Under the new regime: no deductions applied here.
Apply the applicable slab rates (old or new regime, as chosen by employee) to the taxable income arrived at after steps 2 and 3. Apply the 87A rebate if applicable. Add 4% health and education cess. The result is the estimated annual tax liability.
Divide the annual tax liability by 12 (or by remaining months in the year if the employee joined mid-year). Deduct this amount from each monthly salary. Adjustments are made throughout the year as investment proofs are submitted or salary changes.
TDS recalculation happens throughout the year. Your employer recalculates TDS whenever you submit investment proofs, get a salary hike, or declare a regime change. This is why TDS deducted in January–March is often different from April–June — the employer is correcting the annual estimate based on actual proof submissions. Sudden higher TDS in the last quarter usually means you did not submit proofs on time.
Impact of submitting proofs on time: In Example 2, the employee submitting full proofs (HRA + 80C + NPS + 80D) reduced taxable income by ₹5,15,000 — saving approximately ₹1,54,500 in annual tax compared to if no proofs were submitted. That is ₹12,875 more in-hand every month. Proof submission is the single most impactful TDS-reduction action for salaried employees.
Form 16 is your annual TDS certificate from your employer. It is the most important tax document a salaried employee receives and is essential for filing your ITR. Your employer must issue it by 15 June of the assessment year.
| Part | What it Contains | Generated By | Key Details |
|---|---|---|---|
| Part A | TDS deducted and deposited confirmation | TRACES portal (government) | Employer TAN, PAN, quarterly TDS amounts, challan details |
| Part B | Salary breakup and tax computation | Employer (self-generated) | Gross salary, exemptions, deductions, taxable income, tax computed, TDS deducted |
Never use a fake or altered Form 16. Form 16 Part A is digitally signed and verifiable on the TRACES portal. The IT Department cross-checks all Form 16 data against TDS returns filed by employers. Any discrepancy — or an attempt to submit altered figures — constitutes tax fraud and carries severe penalties including prosecution under Section 276C of the Income Tax Act.
Form 26AS is a consolidated tax credit statement available on the Income Tax e-filing portal (incometax.gov.in). It shows every rupee of TDS deducted from any source on your behalf — salary, FD interest, contract payments, and more — and deposited with the government.
Your employer's proof submission window is typically December to January each financial year. Missing this window means your employer cannot reduce TDS for the remaining months — resulting in higher monthly deductions and a refund claim at ITR filing instead.
| Deduction / Exemption | Proof Required | Deadline |
|---|---|---|
| HRA (rent paid) | Monthly rent receipts + landlord PAN (if above ₹1L/year) + rental agreement | Jan 31 (typically) |
| 80C — LIC premium | Premium receipt for current year | Jan 31 |
| 80C — ELSS mutual fund | SIP statement or investment statement for current year | Jan 31 |
| 80C — PPF deposit | PPF passbook showing current year deposit | Jan 31 |
| 80C — Home loan principal | Provisional certificate or repayment statement from bank | Jan 31 |
| Section 24b — Home loan interest | Interest certificate for FY from bank/NBFC | Jan 31 |
| 80D — Medical insurance | Premium receipt for health insurance policy | Jan 31 |
| 80CCD(1B) — NPS | NPS transaction statement showing contribution amount | Jan 31 |
Missed the proof submission deadline? Submit proofs to your employer anyway — some employers accept late submissions and adjust TDS in the final months (February–March). Even if they cannot, claim all eligible deductions directly in your ITR filing. The deduction is your legal right regardless of whether your employer processed it — TDS adjustment will come as a refund after ITR is processed.
If your employer deducted more TDS than your actual tax liability — because you did not submit proofs, or because of regime mismatch — you get the excess back as a tax refund when you file your ITR accurately.
Include all eligible deductions and exemptions in your ITR — even if your employer did not apply them. The ITR is your final declaration; deductions claimed here override whatever your employer applied for TDS purposes.
Ensure all TDS deducted by your employer appears in Form 26AS. Claim only TDS amounts visible in 26AS — claiming undeposited TDS results in demand notices.
ITRs filed before the due date (31 July for most individuals) are processed faster. Refunds for timely filed returns are typically credited within 3–6 months. Late filed returns may face longer refund processing times.
The refund is credited to the bank account linked and pre-validated on the Income Tax e-filing portal. Verify that your account IFSC and account number are correct and the account is pre-validated before filing.
Refund interest: If your refund is delayed beyond 3 months from the end of the assessment year, the IT Department pays you interest at 6% per annum on the refund amount under Section 244A. This interest is taxable in the year received — but it compensates you for the delay. Keep a record of your ITR filing date and track refund status on the e-filing portal.
If you do not inform your employer of your preferred regime at the start of the year, most employers default to the new regime. If the old regime would have saved you more — because you have HRA, home loan, 80C — you end up with insufficient TDS reduction all year. You can still claim the correct deductions in your ITR, but you will have paid excess TDS throughout the year and must wait for the refund.
Most employers set a January deadline for investment proofs. Missing it means your employer cannot apply your deductions for the remaining months — typically February and March — resulting in higher TDS in those months. Set a calendar reminder every December to gather and submit all proofs before your employer's deadline. A few hours of effort can save ₹10,000–₹50,000 in February-March TDS.
Thousands of Indians file ITR without checking Form 26AS first — then discover that the TDS shown in their Form 16 does not match 26AS. This causes ITR processing failures and demand notices. Always download and verify Form 26AS at least 2 weeks before filing. Discrepancies must be resolved with your employer before the ITR is submitted.
Many employees with excess TDS — especially those in lower tax brackets — do not file ITR because they assume TDS is the final tax and there is nothing left to do. This is wrong. If TDS deducted exceeds your actual tax liability, filing an ITR is the only way to get the excess back. The refund does not happen automatically — you must file and claim it.
Your employer's TDS covers only salary income. If you also have FD interest (TDS at 10%), freelance income, or capital gains — these are separate income sources that must be declared in your ITR. Not declaring non-salary income results in AIS mismatches and automatic notices from the IT Department. Use Form 26AS and AIS together to identify all income and TDS before filing.