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Form No. 122 (Earlier Form No. 12B) - Change of Employment - Somu & Associates
Taxation

Form No. 122 (Earlier Form No. 12B) - Change of Employment

Switched jobs mid-year? This is the one form that keeps your new employer's TDS calculation accurate - and the one most people forget to hand over.

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When you move employers within the same Tax year, your new employer has no visibility into what you earned - or what was already deducted - at your previous job. Form 122 closes that gap.

What is Form 122 (Earlier Form No. 12B)?

Form 122 is a document that captures your income and the tax already deducted by your previous employer in the current Tax year. If you change jobs mid-year, submitting it to your new employer is mandatory. It gives them the information they need to calculate your correct tax liability and deduct the right amount of TDS from your salary going forward. For a broader understanding of how TDS works and what slab rates apply, see our Income Tax FAQs.

Why It Matters

Accurate Tax Calculation

Your new employer factors in income from your previous job, so TDS is computed on your actual combined salary - not just what they're paying you.

Avoiding Interest

Without Form 122 (Earlier Form No. 12B), the new employer may under-deduct tax. That shortfall surfaces later as additional tax plus interest when you file your return. The consequences of late or short payment are covered in our ITR Filing Essentials guide.

Filing Your ITR With Multiple Form 130s (Earlier Form 16s), If You Skipped Form 122 (Earlier Form No. 12B)

If Form 122 wasn't submitted at the time and you now hold multiple Form 130s (Earlier Form 16s) for the year, filing your return takes a slightly different path. Form 122 and Form 130 reflect the renumbering introduced under the Income-tax Act, 2025 - see our Income Tax Act 2025 - Overview article for the full picture of what's changed:

  1. Combine income. Aggregate the total income earned from every employer during the tax year.

  2. Consolidate TDS. Add up the TDS amounts shown across all your Form 130s (Earlier Form 16s).

  3. Pay the differential tax, if any. Once income and TDS are reconciled, settle whatever tax shortfall remains before filing.

Why this catches people off guard: Previous employers have typically already deducted tax from your salary and deposited it with the department - so the department already knows about that income. When your combined salary across employers pushes you into a higher slab or past the basic exemption limit, the shortfall doesn't go unnoticed. It can trigger a penalty notice, which is avoidable simply by submitting Form 122 at the time of joining. For current slab rates under both regimes, see our New Tax Regime vs Old guide.

For broader context on how income tax slabs and TDS work, see our Income Tax FAQs.

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