Changed Jobs Mid-Year? Salary Tax and Previous-Employer TDS

A job change does not start a new tax year. Salary from both employers can affect your annual tax estimate, even when each employer's individual salary calculation looks correct.

Reviewed 30 October 2026. This guide explains the optional previous-employer section in the India CTC to In-Hand Salary Calculator, with an example for Tax Year 2026-27, April 2026 to March 2027. It is an educational estimate for ordinary resident salary income, not a tax return or payroll instruction.

Why can TDS increase after changing jobs?

If a new employer estimates tax using only its own salary payments, the estimate may leave out income earned earlier in the same year. Combining both salaries can change the applicable tax, rebate and remaining withholding. A higher deduction from your new monthly salary is not necessarily a second tax on the same income: it may reflect the remaining annual tax after crediting TDS already paid.

The Income Tax Department's Form 122 explanatory note describes reporting other-employer salary and tax deducted during the same Tax Year to the current employer. Payroll needs accurate records, not just your previous CTC.

Form 12B or Form 122: which name applies?

For the current rules, the Department identifies Form 122 as the successor to Forms 12B and 12BAA. Older payroll articles and historical-year records may still refer to Form 12B. Confirm the applicable period and declaration process with payroll rather than treating the old and new names as different tax benefits. See the official form mapping and purpose.

Declarations for deduction and exemption claims are separate: the Department's Form 124 FAQ identifies it as the successor to Form 12BB and explains that a job changer should also provide previous-employer income and TDS through Form 122. Our calculator does not generate or submit either declaration.

If you are reviewing earlier income, first read Tax Year 2026-27 versus FY 2025-26 / AY 2026-27. Do not combine employers from different April-to-March income periods.

What previous salary should you enter?

The calculator's Previous-employer salary (INR) means salary after eligible salary exemptions for the selected regime, but before standard deduction, professional-tax deduction and annual deduction claims.

Do not use these amounts interchangeably:

• CTC: may include employer PF and gratuity provision that are not ordinary salary paid to you.
• Bank credits or net pay: already exclude payroll deductions and TDS.
• Final taxable salary: may already subtract standard deduction or professional tax, which this calculation applies separately.

Use the previous employer's salary tax computation and payslips to identify the correct figure; ask payroll if the labels are unclear. Where relevant, include taxable allowances or benefits in the salary figure confirmed by payroll. Do not simply copy a total without checking what has already been deducted.

If you switch regimes, check whether the previous salary amount needs to change because exemptions differ. In particular, do not carry an old-regime HRA exemption into a new-regime salary figure. The calculator cannot infer prior-employer exemptions from a single amount.

Worked example: joining the new employer in October

These are deliberately simplified, custom inputs, not the default PF settings or a recommended salary structure:

• Resident individual below 60, new regime, Tax Year 2026-27.
• Previous-employer salary for April to September: Rs 8,00,000, using the definition above.
• Previous-employer TDS: Rs 20,000.
• Current annual CTC: Rs 12,00,000; current employment October to March, six inclusive months.
• Employer PF and employee PF both explicitly set to custom Rs 0; gratuity excluded, no bonus or other payroll deductions.
• Delhi, with professional tax Rs 0 for this illustration.
• Current-employer TDS already paid: Rs 0; remaining payroll months: 6.
• No other income, special-rate income, exemptions or additional deductions.

The calculator's combined-year result is:

1. Current-employer gross for six months: Rs 12,00,000 multiplied by 6/12 = Rs 6,00,000.
2. Combined salary: Rs 8,00,000 plus Rs 6,00,000 = Rs 14,00,000.
3. One new-regime standard deduction: Rs 75,000.
4. Combined taxable income: Rs 13,25,000.
5. Slab tax: Rs 20,000 on the Rs 4-8 lakh band, Rs 40,000 on the Rs 8-12 lakh band, and Rs 18,750 on the next Rs 1,25,000 = Rs 78,750. No rebate or marginal relief applies in this example.
6. Cess: Rs 3,150; total estimated annual income tax: Rs 81,900.
7. Less previous TDS Rs 20,000 and current TDS Rs 0: Rs 61,900 remaining estimated tax.
8. Across six remaining payroll months: approximately Rs 10,317 TDS per month.
9. With the example's Rs 1,00,000 current gross per month and no other payroll deductions, estimated remaining-month take-home is approximately Rs 89,683.

Monthly figures are rounded independently; actual payroll rounding can differ. The Department's salary deductions guide describes the standard deduction; the official new-regime budget FAQ explains the slab and rebate framework underlying this example. Calculator regression tests check the published totals against the selected-year engine.

How to reproduce the estimate

1. Open the India salary calculator, choose the income period and enter your annual current CTC. Do not enter six-month CTC and then prorate it again.
2. Enable Joined or left during this financial year and select the current employer's first and last employed months. For this example, select October and March.
3. Check the current salary structure, PF policies, gratuity and professional tax. For the simplified example only, use the custom settings listed above.
4. Enable Include previous-employer salary and TDS. Enter prior salary and actual TDS, plus current-employer TDS already deducted if any.
5. Select how many payroll months remain available for withholding. This is not automatically calculated from today's date.
6. Read Combined tax-year estimate. The main salary tables, chart, regime comparison and downloaded payslip remain annualized single-employer illustrations; they do not incorporate this optional adjustment.

What about PF, HRA and old-regime deductions?

Under the old-regime calculation, previous employee PF and current-period employee PF are combined with other entered annual 80C claims under one cap. Do not repeat employee PF in the separate non-PF annual 80C field. Other annual deduction inputs should represent eligible totals across both employers, not a fresh claim for each job.

Enter previous professional tax actually paid separately. Current professional tax follows the selected employment months where supported; unresolved local or annual schedules require an actual period payroll amount. A missing amount can leave the estimate incomplete.

For related assumptions, read the PF policy guide, HRA exemption guide and old versus new tax regime comparison. When comparing regimes, review prior salary exemptions for each regime separately; the existing annualized comparison is not a combined-employer recommendation.

What if too much TDS has already been deducted?

The calculator sets remaining estimated tax to zero and shows excess TDS separately. It does not turn excess TDS into extra monthly salary or guarantee a refund. Final treatment depends on your complete income, tax credits and return assessment; reconcile your records with payroll and a qualified professional.

If no payroll months remain, the calculator does not divide tax by zero or invent another salary payment. Any outstanding liability needs separate review. The tool does not calculate advance-tax deadlines, interest or payment instructions.

Limits to keep in mind

Current employment is modeled in whole months with average earnings and deductions. Joining mid-month, a delayed bonus, overlapping jobs, severance, arrears, taxable benefits, special relief, other income and capital gains can need additional treatment. A single prior-salary amount does not independently validate those details.

All results are estimates for general informational and educational purposes, not tax, legal, accounting or financial advice. Tax rules and individual circumstances can change the outcome. Consult a qualified professional before filing or making financial decisions. PaySliceCalc is not affiliated with the Income Tax Department of India or any government agency.

Ready to check your figures? Use the India CTC to In-Hand Salary Calculator and its optional previous-employer section.