15 May 2026 · 49Tax
7 Common Form 16 Errors by Employers: How to Spot and Fix Them Before Filing ITR
Your Form 16 may have mistakes. Learn the 7 most common Form 16 errors employers make and how to correct them before filing your ITR for AY 2026-27.
Your employer is legally required to issue Form 16 by 15 June after every financial year. Most salaried employees treat it as gospel and file their ITR based on it without a second glance. That is a mistake.
Form 16 is prepared by your company's payroll or HR team — and they make errors more often than you would expect. A wrong deduction amount, a missing exemption, or a TDS mismatch can lead to an inflated tax liability, a stuck refund, or worse — an income tax notice under Section 143(1).
Here are the seven most common Form 16 errors and exactly how to catch and fix each one before you file for AY 2026-27.
1. HRA Exemption Not Calculated or Calculated Incorrectly
This is the single most frequent error, especially at mid-size companies where payroll is handled manually or through basic software.
What goes wrong
- Employer does not apply HRA exemption at all, even though you submitted rent receipts
- The exemption is calculated using the wrong city classification (metro vs non-metro)
- Actual rent paid by you was higher than what was considered
How HRA exemption should be calculated
The exempt amount is the lowest of:
| Component | Formula |
|---|---|
| Actual HRA received | As per your salary structure |
| Rent paid minus 10% of basic salary | Actual rent - (10% x Basic + DA) |
| 50% of basic salary (metro) or 40% (non-metro) | Metro cities: Delhi, Mumbai, Kolkata, Chennai |
How to spot it
Compare the HRA exemption in Part B of your Form 16 (under Section 10) with your own calculation using your rent receipts and salary slips. If you paid Rs 20,000/month rent in Bengaluru (non-metro for HRA purposes) with a basic salary of Rs 50,000/month and HRA of Rs 25,000/month, your annual exemption should be Rs 1,80,000 — not zero.
How to fix it
Contact your payroll team with your rent receipts and ask them to issue a revised Form 16. If they refuse or delay, you can still claim the correct HRA exemption in your ITR by calculating it yourself. Use your Form 16's Part B breakdown to identify the discrepancy and adjust accordingly.
2. TDS Amount Does Not Match Form 26AS or AIS
This is the error most likely to cause real problems after filing.
What goes wrong
- Employer deducted TDS from your salary but deposited it late, so the quarterly TDS return was filed with different amounts
- Employer filed a correction statement but did not update your Form 16
- Multiple TAN numbers were used (common when companies restructure mid-year)
How to spot it
Download your Form 26AS and AIS from the income tax portal. Compare the total TDS shown in Part A of Form 16 against what appears in Form 26AS under Section 192. The numbers must match exactly — to the rupee.
Why this matters
When you file your ITR, the income tax department validates your TDS claim against Form 26AS — not against your Form 16. If you claim Rs 1,50,000 in TDS based on Form 16 but only Rs 1,35,000 appears in 26AS, the department will allow only Rs 1,35,000. You will receive a notice and your refund will be reduced.
How to fix it
If there is a mismatch, ask your employer to verify their TDS return filings on the TRACES portal. They may need to file a correction statement (Form 24Q revised). Wait for the corrected data to reflect in your 26AS before filing.
3. Section 80C Deductions Not Fully Reflected
What goes wrong
- You submitted investment proofs for PPF, ELSS, life insurance, or tuition fees, but payroll only captured some of them
- Your employer applied the old Rs 1,50,000 limit correctly but missed a specific component — for example, they included your EPF contribution but forgot the VPF or PPF proof you submitted
- Home loan principal repayment proof was submitted but not included under 80C
How to spot it
Add up all your 80C-eligible investments independently: EPF (employee share), PPF, ELSS, life insurance premiums, tuition fees, home loan principal, NSC, SCSS, 5-year FD. Compare this total (capped at Rs 1,50,000) with what appears in Part B of Form 16 under Chapter VI-A deductions.
How to fix it
If the Form 16 shows a lower 80C amount, send your employer the specific proof that was missed and request a revision. If the revised Form 16 cannot be issued in time, you can still claim the correct amount in your ITR — just make sure you retain the investment proofs for your records in case of scrutiny.
4. Wrong Assessment Year or Financial Year
This sounds too basic to happen, but it does — particularly when payroll teams generate Form 16 using templates from the previous year.
What goes wrong
- Form 16 mentions AY 2025-26 instead of AY 2026-27
- The "Period with the employer" dates fall outside FY 2025-26
How to spot it
Check the top of Part A and Part B. The assessment year should read 2026-27 and the financial year should be 2025-26. The period of employment should fall between 1 April 2025 and 31 March 2026.
How to fix it
This requires a reissue. Use this Form 16 as-is and the income tax portal may reject your filing or flag it during processing. Inform payroll immediately.
5. Standard Deduction Not Applied or Applied at Wrong Amount
What goes wrong
For AY 2026-27, the standard deduction under Section 16(ia) is Rs 75,000 under both the old and new tax regimes. Some employers still apply the old Rs 50,000 figure. Others skip it entirely when generating Part B for employees who joined mid-year, incorrectly assuming it should be pro-rated (it should not — the standard deduction is a flat annual amount regardless of months worked).
How to spot it
Look at Part B of Form 16 under "Deductions under Section 16." The standard deduction line should show exactly Rs 75,000.
How to fix it
If it shows Rs 50,000 or zero, request a corrected Form 16. Alternatively, claim the correct Rs 75,000 deduction in your ITR directly — this is a straightforward adjustment that does not require employer cooperation.
6. Professional Tax Deduction Incorrect
What goes wrong
Professional tax is a state-level tax deducted by your employer and allowed as a deduction under Section 16(iii). The maximum is Rs 2,500 per year in most states, but the actual amount depends on your state and salary slab.
Common errors:
- Employer deducted professional tax from your salary every month but did not reflect the full annual total in Form 16
- The professional tax amount in Form 16 does not match your salary slips
- For employees who relocated between states mid-year, the combined professional tax from both states is not captured
How to spot it
Add up the professional tax deducted from all 12 (or however many) salary slips. This total should appear under Section 16(iii) in Part B of Form 16.
How to fix it
If there is a shortfall, provide your salary slips as evidence to your payroll team. The correction is simple and most payroll teams will revise quickly.
7. Previous Employer Income Not Included (Job Switchers)
This error catches the most people off guard and often results in a large tax demand after filing.
What goes wrong
When you switch jobs mid-year, your new employer is supposed to include your previous employer's salary and TDS details in your Form 16 — but only if you reported them. If you did not submit your previous employer's Form 12B (or the previous Form 16), your new employer calculates TDS only on the salary they paid you, without knowing your total annual income.
The result: each employer applies the basic exemption limit and lower slab rates independently, and your total TDS deducted across both employers is less than your actual tax liability.
Example
| Previous employer (Apr-Aug) | New employer (Sep-Mar) | |
|---|---|---|
| Salary | Rs 5,00,000 | Rs 7,00,000 |
| TDS deducted | Rs 15,000 | Rs 25,000 |
Total income: Rs 12,00,000. Total TDS: Rs 40,000. But actual tax liability at this income level is significantly higher. The shortfall means you owe additional tax when filing, plus potential interest under Section 234B and 234C.
How to spot it
If you changed jobs during FY 2025-26, check whether your new employer's Form 16 includes your previous salary in the gross salary computation. Look at Part B — the "Salary as per Section 17(1)" should reflect your combined salary from both employers.
How to fix it
If it is missing, you must report the combined income in your ITR yourself. Download Form 16 from your previous employer separately and enter both sets of salary and TDS details when filing. If you underpaid tax, calculate and pay the balance using a self-assessment challan (Challan 280) before filing to avoid interest charges.
What to Do If Your Employer Won't Issue a Corrected Form 16
In most cases, a polite email to your HR or payroll team with specific evidence of the error will get it fixed. But if they refuse or cannot revise in time:
- You are not stuck. Form 16 is a TDS certificate — it is not your tax return. You can file your ITR with the correct figures even if Form 16 has errors.
- Use Form 26AS and AIS as your baseline. The income tax department relies on these, not on Form 16.
- Keep all supporting documents. Rent receipts, investment proofs, salary slips, and previous employer Form 16 — retain these for at least 7 years in case of scrutiny.
- File on time regardless. Do not delay your filing waiting for a corrected Form 16. The penalty for late filing is real and avoidable.
Quick Checklist Before You File
| Check | What to verify | Source document |
|---|---|---|
| TDS match | Form 16 Part A = Form 26AS Section 192 | Form 26AS / AIS |
| Gross salary | Includes all employers if you switched jobs | Salary slips / previous Form 16 |
| Standard deduction | Rs 75,000 applied | Form 16 Part B |
| HRA exemption | Correctly calculated per the three-part formula | Rent receipts + salary structure |
| 80C total | All submitted proofs reflected, capped at Rs 1,50,000 | Investment proof copies |
| Professional tax | Matches total from salary slips | Monthly salary slips |
| Assessment year | Shows AY 2026-27 / FY 2025-26 | Form 16 header |
The Bottom Line
Form 16 is the starting point for your ITR — not the final word. Spend 15 minutes cross-checking it against your salary slips, Form 26AS, and investment proofs before you file. Catching an error now is far easier than responding to a tax notice six months later.
49Tax's AI automatically cross-references your Form 16 with your AIS and 26AS data to flag discrepancies before you submit. If something doesn't add up, you will know about it before the tax department does.