Every salaried employee in India has Tax Deducted at Source (TDS) deducted from their monthly salary before it reaches their bank account. This happens under Section 192 of the Income Tax Act, 1961. While the employer handles the mechanics, understanding how TDS on salary is calculated, what deductions reduce it, and how Form 16 works gives you the information you need to plan your taxes effectively and avoid surprises at year-end.
Key Takeaways
- Section 192: employer deducts TDS monthly based on estimated annual tax liability divided by 12 (or remaining months)
- New tax regime is the default — declare old regime preference in writing to claim HRA, 80C etc. in TDS calculation
- Submit Form 12BB with estimated investments in April; submit actual proofs in January-February
- Form 16 (Part A + Part B) is your TDS certificate — issued by 15 June each year
- HRA exemption, 80C (₹1.5L), 80D (₹25K), and NPS 80CCD (₹50K) are key tools to reduce salary TDS under the old regime
- Excess TDS deducted = refund when you file ITR
How Employers Calculate TDS on Salary (Section 192)
The employer is responsible for estimating your annual income tax liability and deducting it equally from your salary over the financial year. Here is the step-by-step process:
Step 1: Estimate Annual Taxable Salary
The employer takes your salary as of April (or date of joining) and projects it for the full year, accounting for:
- Basic salary, HRA, special allowance, bonus, LTA, medical reimbursement
- Exempt components (HRA, LTA, uniform allowance where applicable)
- Standard deduction of ₹75,000 (new regime) or ₹50,000 (old regime)
Step 2: Collect Investment Declarations (Form 12BB)
Employees submit Form 12BB declaring:
- HRA details: rent paid, landlord name and address (and PAN if rent exceeds ₹1 lakh/year)
- LTA: expected travel details
- Home loan interest: lender name, account number, interest certificate amount
- 80C investments: PPF contribution, ELSS, LIC premium, EPF (own contribution), home loan principal
- 80D: health insurance premium paid
- Other deductions: NPS (80CCD), donations (80G), education loan (80E)
Based on these declarations, the employer computes projected taxable income.
Step 3: Compute Annual Tax
The employer applies the applicable tax slabs (under whichever regime the employee has chosen), adds surcharge and cess, and arrives at total annual tax.
Step 4: Divide by Remaining Months
Annual tax ÷ number of remaining months in the financial year = monthly TDS amount.
If an employee joins in October, the annual tax is divided by 6 (October to March).
Mid-Year Revisions
TDS is recalculated periodically — when salary changes (increment, promotion, bonus), when additional deduction proofs are submitted, or when the employee declares a different regime. This is why some employees see varying TDS amounts month to month.
Understanding Your Pay Slip: What Each Component Means for TDS
Taxable Components
- Basic salary: Fully taxable
- Dearness Allowance (DA): Fully taxable
- Special allowance: Fully taxable
- Performance bonus: Fully taxable in the year received
- Leave encashment (during service): Fully taxable
Partially or Fully Exempt Components
- HRA (House Rent Allowance): Partially exempt if you pay rent (see formula below)
- LTA (Leave Travel Allowance): Exempt for actual travel expenses for 2 journeys in a 4-year block
- Children education allowance: ₹100/month per child, maximum 2 children
- Hostel allowance: ₹300/month per child, maximum 2 children
HRA Exemption Calculation
HRA exemption under the old regime is the lowest of three amounts:
- Actual HRA received from employer
- Rent paid minus 10% of basic salary
- 50% of basic salary (if the employee resides in a metro: Delhi, Mumbai, Chennai, Kolkata); 40% of basic salary for other cities
Example: Basic ₹40,000/month; HRA received ₹20,000/month; rent paid ₹18,000/month; non-metro city.
- HRA received: ₹20,000
- Rent paid − 10% of basic: ₹18,000 − ₹4,000 = ₹14,000
- 40% of basic: ₹16,000
HRA exemption = ₹14,000/month (the lowest of the three).
Form 12BB: The Investment Declaration Form
Form 12BB is the standard form (notified by CBDT) for employees to declare investments and deductions to their employer. It covers four sections:
| Section | What to Declare |
|---|---|
| A — HRA | City (metro/non-metro), monthly rent, landlord name, address, PAN (if rent > ₹1 lakh/year) |
| B — LTA | Details of journey (mode, fare amount, travel dates) |
| C — Home loan interest | Lender name, address, account number, interest payable for the year |
| D — Chapter VI-A deductions | 80C, 80CCC, 80CCD, 80D, 80E, 80G, 80TTA, other deductions |
Two-Stage Submission Process
- April (beginning of year): Submit estimated declarations based on planned investments. Employer uses these to compute TDS.
- January–February: Submit actual investment proofs — LIC policy receipts, PPF passbook, ELSS statements, home loan certificate, health insurance receipts. Employer adjusts TDS for remaining months based on actual vs estimated.
Consequence of not submitting: Employer deducts TDS without considering your deductions, resulting in excess TDS and a refund when you file ITR.
Key Deductions That Reduce Salary TDS (Old Regime)
These are the primary instruments to reduce TDS if you opt for the old regime:
Section 80C — Maximum ₹1,50,000
| Instrument | Benefit |
|---|---|
| Employee Provident Fund (EPF) — own contribution | Included automatically from salary |
| Public Provident Fund (PPF) | Deposits in PPF account |
| ELSS (Equity Linked Savings Scheme) | Mutual fund with 3-year lock-in |
| LIC or term insurance premium | Life insurance premiums (own, spouse, children) |
| 5-year bank FD | Tax-saving fixed deposits |
| Home loan principal repayment | Principal component of EMI |
| Children's tuition fees | Up to 2 children |
| NSC (National Savings Certificates) | Post office savings scheme |
| Sukanya Samriddhi Yojana | For girl child |
Section 80D — Health Insurance Premiums
| Category | Deduction Limit |
|---|---|
| Self, spouse, and children (below 60) | Up to ₹25,000 |
| Parents (below 60) | Additional up to ₹25,000 |
| Self/spouse/children (senior citizen 60+) | Up to ₹50,000 |
| Parents (senior citizen 60+) | Additional up to ₹50,000 |
Maximum combined deduction: ₹1,00,000 (when both self/family and parents are senior citizens).
Section 80CCD(1B) — Additional NPS Deduction
An additional deduction of up to ₹50,000 over and above 80C for contributions made to the National Pension System (NPS). This is only available under the old regime.
Section 24(b) — Home Loan Interest
For a self-occupied property: deduction on home loan interest up to ₹2,00,000 per year. For let-out property: actual interest (no cap), but can be offset only up to ₹2,00,000 against other income (balance carried forward).
Section 80E — Education Loan Interest
Full deduction (no limit) on interest paid on education loan for higher education. Available for 8 years from the year of first repayment.
Form 16: Understanding Your TDS Certificate
Form 16 is issued by your employer every year by 15 June. It has two parts:
Part A — TDS Certificate (Generated from TRACES)
- Tax Deduction Account Number (TAN) and PAN of employer
- Your PAN
- Period of employment
- Month-wise details of TDS deducted and deposited with the government
You can verify Part A details against your Form 26AS on the income tax portal. Mismatches between Form 16 Part A and Form 26AS must be resolved with your employer.
Part B — Salary Computation (Prepared by Employer)
- Complete salary breakup (gross, allowances, deductions)
- HRA and other exemptions applied
- Standard deduction claimed
- Net taxable salary
- Chapter VI-A deductions (80C, 80D, etc.) claimed
- Taxable income
- Tax computation (rate-wise)
- Total tax, TDS deducted
Part B is used to verify the accuracy of your employer's TDS calculation and to file your ITR correctly.
What to Do if Excess TDS is Deducted
Excess TDS happens when:
- You submitted investment declarations but didn't claim them in ITR
- You changed jobs mid-year and both employers deducted TDS independently
- Your employer used the new regime (without your declaration), but you file under old regime
- Advance tax was not considered by the employer
To claim excess TDS as a refund:
- File your ITR on time (before 31 July)
- In the ITR, declare all deductions you are entitled to
- The income tax portal computes refund = TDS deducted − actual tax payable
- Verify return; refund is credited to your pre-validated bank account
For complex salary tax situations — multiple employers, perquisites, ESOP taxation, foreign employer income — professional income tax filing assistance ensures accuracy and avoids notices.
Practical Checklist for Salaried Employees
- At start of financial year: inform employer of regime choice (old/new)
- Submit Form 12BB with estimated investments in April
- Ensure landlord's PAN is collected if monthly rent exceeds ₹8,333 (annual ₹1 lakh)
- In January-February: submit actual investment proofs to HR / payroll team
- Verify TDS in Form 26AS each quarter — it should match your pay slips
- Collect Form 16 (Part A + B) from employer by 15 June
- Cross-check Form 16 Part A against Form 26AS before filing ITR
- File ITR before 31 July and verify (e-verify within 30 days)
For broader TDS compliance at the employer/business level — including TDS on contractor payments, professional fees, and rent — our compliance services cover all TDS obligations under Chapter XVII-B of the Income Tax Act.
This article is for general informational purposes only and does not constitute professional advice. TDS rates, deduction limits, and due dates are subject to change through annual finance acts and CBDT circulars. Consult a qualified Chartered Accountant for advice specific to your situation.
Frequently Asked Questions
Can I change my tax regime choice mid-year for TDS purposes?
You can declare a change in regime to your employer at the beginning of the financial year. Mid-year changes are generally not permitted for the purpose of employer TDS calculation. However, when filing your ITR, you can choose a different regime from what your employer used, and the difference (TDS excess deducted or shortfall) is adjusted as a refund or self-assessment tax.
What should I do if my employer has deducted excess TDS on salary?
If excess TDS has been deducted, you will receive a refund when you file your ITR. Do not delay filing — the sooner you file, the sooner the refund is processed. Verify the TDS credit in Form 26AS or the AIS on the income tax portal before filing to ensure all deductions are correctly reflected.
What is Form 12BB and when do I submit it?
Form 12BB is the investment declaration form submitted by an employee to their employer, typically in April at the start of the financial year, and again in January-February with actual proof. It informs the employer about HRA, LTA, home loan interest, and Section 80 deductions so TDS can be calculated accurately. Failure to submit can result in excess TDS deduction.
Does my employer deduct TDS under the new or old tax regime?
From FY 2023-24 onward, the new tax regime is the default. If you want TDS to be calculated under the old regime (so you can claim HRA, 80C etc.), you must explicitly inform your employer in writing at the beginning of the year. Without this declaration, your employer will use the new regime.
What is the deadline for my employer to issue Form 16?
The employer must issue Form 16 (Part A and Part B) by 15 June of the assessment year — i.e., by 15 June 2025 for FY 2024-25. Form 16 Part A is generated from TRACES (TDS reconciliation portal) and Part B is prepared by the employer based on salary calculations.