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The single most important document your employer gives you every year.
Form 16 is a certificate your employer issues annually, summarizing your salary, the tax deducted at source (TDS) throughout the year, and the deductions you declared. It's the primary document used to file your ITR.
Why it matters
Nearly everything you need to file a simple salaried ITR is already summarized in this one document
Part A
A summary of TDS deducted and deposited with the government each quarter, along with your employer's and your own PAN details. Generated and downloadable from the TRACES portal.
Part B
Breaks down your salary structure, exemptions (like HRA), and deductions claimed (like 80C investments) in detail — this is where the actual tax calculation logic sits.
Cross-check the TDS shown in Form 16 against Form 26AS or the Annual Information Statement (AIS) on the income tax portal — these should match. A mismatch can point to a filing error on the employer's end that needs correcting before you file your return.
Form 26AS
A consolidated tax statement showing all TDS/TCS credited against your PAN across every deductor, not just your employer.
AIS
A broader statement covering not just TDS but also other financial transactions reported to the tax department, like large deposits or securities transactions.
💡 If Form 16 and Form 26AS don't match, resolve it with your employer's payroll/HR team before filing — the tax department's records rely on Form 26AS, not Form 16 alone.
You'll receive a separate Form 16 from each employer you worked for during the financial year. Both need to be accounted for when filing — combining the salary and TDS details from each, since your total income and applicable slab depend on your combined earnings across both employers.
Key Takeaway
Form 16 has two parts: Part A (TDS summary) and Part B (salary/deduction breakdown). It's the primary reference document for filing your ITR — always cross-check its TDS figures against Form 26AS/AIS before filing.