Data last verified: June 2026
TDS on Salary: How Your Employer Deducts Tax (And How to Reduce It)
Understand how TDS on salary works under Section 192 — how employers calculate monthly deductions, how to submit investment proofs, what happens if you don't declare, how to get excess TDS refunded, and Form 16 explained.
Jashmin covers personal finance topics including loans, taxes, and investment planning for Indian households.
Every month, your employer deducts some amount from your salary as TDS before it hits your bank account. For many people, especially in their first job, this feels like money disappearing into a black hole. You see your CTC is ₹8 lakh but only ₹52,000 lands in your account instead of the ₹55,000 you expected. Where did that ₹3,000 go? That's TDS — and understanding how it works can literally save you ₹20,000-₹80,000 per year in unnecessary deductions.
I've helped several friends and colleagues reduce their TDS by properly declaring investments they'd already made. The most common situation? People who have PPF accounts, pay health insurance premiums, or pay home loan EMI but never submit proofs to their employer — so the employer deducts tax as if they have zero deductions.
Tax laws change annually with each Union Budget. The information in this article is based on rules applicable for FY 2026-27. Always cross-check with your employer's HR/payroll team or a qualified CA for your specific situation.
How TDS on Salary Works: The Basics
TDS stands for Tax Deducted at Source. Under Section 192 of the Income Tax Act, your employer is legally required to estimate your total annual tax liability and deduct it equally across your monthly salary payments. Think of it as 'paying tax in advance' — instead of one big tax payment at year-end, it's spread across 12 months.
How your employer calculates monthly TDS:
- Step 1: Estimates your gross annual income (salary + allowances + bonuses + perquisites)
- Step 2: Subtracts exemptions you've declared (HRA, LTA, standard deduction of ₹75,000)
- Step 3: Subtracts deductions you've declared (80C, 80D, 80E, 24b, NPS, etc.)
- Step 4: Calculates total tax on the remaining taxable income using applicable slab rates
- Step 5: Adds 4% cess on the calculated tax
- Step 6: Divides total annual tax by 12 (or remaining months) = your monthly TDS
The key word here is 'declared.' Your employer can only consider deductions and exemptions that you've formally declared to them. If you have a PPF account but never told payroll about it, they'll calculate TDS as if you have no Section 80C investment. You're not losing that money permanently (you'll get it back as a refund when you file your ITR), but why wait 6-12 months for a refund when you can avoid the excess deduction upfront?
The Investment Declaration Form: Your First Chance to Reduce TDS
At the start of every financial year (usually April-May), most companies ask you to fill an 'Investment Declaration' or 'Tax Declaration' form. This is where you tell your employer what tax-saving investments you plan to make during the year.
What to declare in your investment declaration:
- Section 80C investments: PPF, ELSS, life insurance premium, EPF (auto-declared), home loan principal, SSY, NSC, children's tuition fees
- Section 80D: Health insurance premium (self/family up to ₹25,000 + parents up to ₹25,000-50,000)
- Section 80E: Education loan interest (no limit)
- Section 24(b): Home loan interest (up to ₹2 lakh for self-occupied property)
- Section 80CCD(1B): NPS contribution (additional ₹50,000 beyond 80C limit)
- HRA: Monthly rent amount and city of residence
- LTA: Planned travel claims (if applicable)
Here's the important part — this is a planned declaration. You're telling the employer what you intend to invest. You don't need proofs at this stage. But you MUST actually make these investments before March 31st, because proofs will be required in January-February.
Pro tip: Always declare the full ₹1.5 lakh under Section 80C in April even if you haven't invested yet. This reduces TDS from month 1. Just make sure you actually invest ₹1.5 lakh by March 31st. If you don't, your employer will deduct the shortfall from January-March salary — but at least your cash flow was better through the year.
Submitting Investment Proofs: The January-February Window
Between January and February (exact dates vary by company), your employer asks you to submit actual proof of the investments you declared. This is the proof submission or 'tax proof' window.
Common proofs required for each deduction:
- 80C - PPF: Passbook copy or deposit receipt
- 80C - ELSS: Mutual fund statement showing ELSS investments during the FY
- 80C - Life insurance: Premium payment receipt
- 80C - Home loan principal: Provisional certificate from bank (usually available on net banking)
- 80D - Health insurance: Premium payment receipt (only paid via non-cash modes)
- Section 24(b) - Home loan interest: Provisional interest certificate from bank
- HRA: Rent receipts (all 12 months) + rent agreement + landlord PAN (if rent > ₹1 lakh/year)
- 80E - Education loan: Interest certificate from the lending bank
- 80CCD(1B) - NPS: NPS contribution statement from CRA (NSDL/KFintech)
If you miss the company's proof submission deadline, your employer will recalculate TDS without those deductions and deduct the shortfall from your February-March salary. This creates a cash crunch where your March salary might be significantly lower. I've seen people get ₹15,000-20,000 less in their March salary just because they missed the proof deadline.
What Happens If You Don't Submit Declarations at All?
If you never submit any investment declaration, your employer calculates TDS assuming you have ZERO deductions beyond the standard deduction of ₹75,000 and basic exemptions. This means significantly higher TDS throughout the year.
Let's see the impact. If Vikram earns ₹10 lakh gross and makes no declaration (old regime), his employer assumes taxable income of ₹9.25 lakh (₹10L - ₹75K standard deduction). Tax on this is approximately ₹1,01,400. But if Vikram had declared ₹1.5 lakh (80C) + ₹25,000 (80D) + ₹50,000 (NPS 80CCD1B), his taxable income drops to ₹7 lakh — below the effective tax threshold under new regime or about ₹54,600 in old regime. That's almost ₹47,000 in TDS he could have avoided upfront.
You'll eventually get this money back as a refund when you file your ITR, but that refund comes 3-6 months after filing. Why give the government an interest-free loan of your money for a year when you can keep it in your own bank account?
How to Get Excess TDS Refunded
If your employer has deducted more TDS than your actual tax liability (because you forgot to declare, or your investments were more than declared), you can claim the excess back:
Getting your TDS refund:
- File your Income Tax Return (ITR) by July 31st of the assessment year
- Declare all your actual deductions/exemptions in the ITR (even if not submitted to employer)
- The system automatically calculates if TDS deducted > actual tax liability
- Excess amount is processed as a refund (credited directly to your bank account)
- Refund typically arrives within 15-45 days of ITR processing
- You also receive interest on delayed refunds at 0.5% per month under Section 244A
Pro tip: Always verify your Form 26AS (Annual Tax Statement) on the income tax portal before filing your ITR. This shows all TDS deducted by your employer and should match your Form 16. If there's a mismatch, contact your employer's payroll team before filing.
Understanding Form 16: Your Employer's Tax Certificate
Form 16 is the TDS certificate issued by your employer after the financial year ends (usually by June 15th). It's your most important document for filing ITR. Here's what it contains:
Form 16 has two parts:
- Part A: Certificate from the employer showing TDS deducted and deposited (quarter-wise) — generated from TRACES portal
- Part B: Detailed breakup of salary, exemptions claimed, deductions allowed, and net tax calculated
- It shows your total income, all exemptions (HRA, LTA, standard deduction), and deductions (80C, 80D, etc.)
- The tax calculated in Form 16 may differ from your actual liability if you have other income sources
- Form 16 is essential for filing ITR — most ITR filing platforms auto-populate data from Form 16
- If your employer doesn't provide Form 16, you can still file ITR using salary slips and Form 26AS data
Switching Between Old and New Tax Regime: Impact on TDS
Since FY 2023-24, the new tax regime is the default. Your employer will calculate TDS under the new regime unless you specifically opt for the old regime. This choice affects your monthly TDS significantly.
Key regime differences for TDS:
- New regime (default): Lower tax rates but NO deductions (no 80C, 80D, HRA, etc.) — only ₹75,000 standard deduction
- Old regime: Higher tax rates but allows all deductions — beneficial if total deductions exceed ₹3-4 lakh
- Salaried employees can choose regime at the time of investment declaration (April)
- You can switch between regimes every year (for salary TDS purposes)
- Final regime choice is made while filing ITR — if different from what employer used, refund/additional tax applies
- Quick rule: If total deductions (80C + 80D + HRA + home loan interest + NPS) exceed ₹3.75 lakh, old regime is usually better
If you're unsure which regime is better for you, tell your employer to use the old regime at the beginning of the year (assuming you plan to invest in 80C etc.). You can always switch to new regime while filing ITR if it turns out to be more beneficial. But switching from new to old after the year ends requires you to verify that employer TDS was correctly adjusted.
Smart TDS Planning: Month-by-Month Approach
Annual TDS planning calendar:
- April: Submit full investment declaration to employer — declare all planned 80C, 80D, HRA, home loan
- April-December: Actually make the investments (SIP in ELSS, PPF deposits, insurance premium payments)
- October: Review your Form 26AS — check if TDS credited matches your salary slips
- January-February: Submit all investment proofs to employer before their deadline
- March: Verify your March salary reflects correct TDS after proof verification
- April (next FY): Collect Form 16 from employer by June 15th
- July: File ITR claiming any additional deductions not submitted to employer
The bottom line: your employer is just an intermediary between you and the Income Tax Department. They deduct based on what you tell them. The more accurately you declare, the less hassle you'll have with refunds or unexpected deductions. Take those 15 minutes in April to fill your declaration form properly — it's worth thousands of rupees in better monthly cash flow.
Calculate your exact tax liability under both old and new regime to choose the better option for TDS planning.
Use Income Tax CalculatorFrequently Asked Questions
Your employer estimates your total annual tax liability by considering gross salary minus all declared exemptions (HRA, standard deduction) and deductions (80C, 80D, etc.). The resulting annual tax is divided by 12 (or remaining months in the year) to arrive at your monthly TDS. This is recalculated whenever you submit new declarations or proofs.
If you don't submit proofs by the company deadline (usually January-February), your employer will recalculate TDS without those deductions and deduct the entire shortfall from your February and March salary. You'll get the excess TDS back as a refund when you file your ITR, but it creates a significant cash crunch in those months.
Yes, absolutely. You can claim any legitimate deduction while filing your ITR regardless of whether you declared it to your employer. If this results in your actual tax being lower than TDS deducted, you'll receive a refund. Common examples: investments made after the proof submission deadline, new health insurance purchased mid-year, or education loan interest.
File your ITR claiming all applicable deductions. If your actual tax liability is less than TDS deducted, the Income Tax Department will process a refund directly to your bank account. This typically takes 15-45 days after ITR processing. Ensure your bank account details are updated on the income tax portal and are pre-validated.
If your total deductions and exemptions (80C + 80D + HRA + home loan interest + NPS) exceed approximately ₹3.75 lakh, the old regime typically results in lower tax. If your deductions are minimal (e.g., you don't pay rent, have no home loan, limited investments), the new regime with its lower slab rates is usually better. Use a tax calculator to compare both scenarios with your exact numbers.