Rohit joined a ₹40.5 lakh role as a software engineer in Bengaluru and had to pick a tax regime on the joining form. New regime: ₹2,30,584 a month, income tax of ₹6,97,194 a year. Old regime with no real deductions: ₹2,09,784 a month, because ₹40.5 lakh gets taxed ₹9,46,794 there. Same CTC, ₹20,800 a month difference, decided by one checkbox.
What ₹40.5 lakh CTC actually contains
Standard 50% basic structure at ₹40.5L:
| Component | Annual | Monthly |
|---|---|---|
| Basic salary | ₹20,25,000 | ₹1,68,750 |
| HRA (50% of basic) | ₹10,12,500 | ₹84,375 |
| Special allowance | ₹6,72,098 | ₹56,008 |
| Employer PF (12% of basic) | ₹2,43,000 | ₹20,250 |
| Gratuity provision (4.81%) | ₹97,403 | ₹8,117 |
| Total CTC | ₹40,50,000 | ₹3,37,500 |
Employer PF plus gratuity comes to ₹3,40,403. That money sits inside the ₹40.5 lakh CTC and never lands in your salary account. Your gross salary, the part payroll actually pays, is ₹37,09,598 a year.
Take-home calculation (new regime)
| Item | Annual | Monthly |
|---|---|---|
| Gross salary (excl. employer PF + gratuity) | ₹37,09,598 | ₹3,09,133 |
| Less: Employee PF | ₹2,43,000 | ₹20,250 |
| Less: Professional tax (Karnataka) | ₹2,400 | ₹200 |
| Less: Income tax | ₹6,97,194 | ₹58,100 |
| In-hand | ₹27,67,003 | ₹2,30,584 |
Tax working: gross ₹37,09,598 minus the ₹75,000 standard deduction leaves taxable income of ₹36,34,598. Slab tax works out to ₹6,70,379, and after cess the final income tax is ₹6,97,194.
New regime vs old regime at this salary
Under the new regime, income tax works out to ₹6,97,194 a year. Switch to the old regime with no major deductions and the same ₹40.5 lakh is taxed ₹9,46,794 a year, pulling monthly in-hand down to ₹2,09,784. That’s a gap of ₹2,49,600 a year, gone for ticking the wrong box.
The old regime only catches up if you genuinely stack deductions: the full ₹1.5 lakh under 80C, ₹25,000 of 80D health cover, ₹50,000 of NPS under 80CCD(1B), and real HRA exemption from rent paid. Without most of that, stay on the new regime. Run your actual numbers both ways in the take-home calculator before you commit on the joining form.
How take-home moves across the salary ladder
| CTC | Monthly take-home | Income tax / year |
|---|---|---|
| ₹39L | ₹2,23,456 | ₹6,54,328/yr |
| ₹40L | ₹2,28,208 | ₹6,82,906/yr |
| ₹41L | ₹2,32,959 | ₹7,11,483/yr |
| ₹42L | ₹2,37,711 | ₹7,40,061/yr |
| ₹40.5L | ₹2,30,584 | ₹6,97,194/yr |
All figures: new regime, Karnataka professional tax, 50% basic structure, FY 2025-26. Plug your own CTC and city into the take-home salary calculator for an exact number.
Sources
- Income Tax Act 1961: Section 115BAC new regime slabs, ₹75,000 standard deduction, Section 87A rebate (FY 2025-26)
- EPFO: 12% employee plus 12% employer PF contribution on basic salary
- Payment of Gratuity Act 1972: 4.81% gratuity provision formula
- State Professional Tax Acts (Karnataka rate used as the representative figure)