Salary Calculator Guide: How to Use CTC, PF, HRA and Tax Inputs
Learn how to use SmartFintool’s salary calculator correctly, what each CTC input means, and how PF, HRA, professional tax and income tax affect in-hand salary.
Direct answer
Use the salary calculator by entering CTC, basic salary percentage, HRA, rent paid, professional tax and tax regime. It estimates in-hand salary after employee PF, tax and other deductions, but no calculator can replace your actual payslip because employer structures differ.
Inputs you need
| Input | What it means | Where to find it |
|---|---|---|
| Annual CTC | Total annual employer cost | Offer letter or CTC breakup |
| Basic salary | Base used for HRA and PF | Payslip or salary structure |
| HRA received | House rent allowance component | Payslip |
| Rent paid | Actual annual rent paid | Rent receipts or rental agreement |
| Professional tax | State-specific payroll deduction | Payslip |
| Tax regime | New or old income tax regime | Your declaration or tax estimate |
How the estimate is calculated
- Start with CTC and remove employer-side components such as employer PF and gratuity accrual.
- Arrive at annual gross salary.
- Subtract employee PF, professional tax, other deductions and estimated income tax.
- Divide the remaining annual amount by 12 for monthly in-hand salary.
Example
For ₹12 lakh CTC with 40% basic and default settings, the calculator shows an illustrative monthly in-hand figure. If you pay rent and choose the old regime, HRA exemption can reduce taxable income. If you choose the new regime, HRA exemption is generally not available for most salaried taxpayers.
Common mistakes
- Treating CTC as take-home salary.
- Forgetting employer PF and gratuity in CTC.
- Using HRA exemption without paying actual rent.
- Using the same professional tax for every state.
- Comparing new and old regime without entering actual deductions.
Last reviewed: 24 August 2026. This is an educational estimator, not payroll or tax advice.
Article FAQ
What is a good basic salary percentage?
Basic salary is often 30–50% of CTC, but there is no universal rule. Use your offer letter or payslip.
Does the salary calculator include TDS exactly?
It estimates income tax using the centralized tax engine, but actual TDS depends on declarations, employer policy and deductions.
Can I use this for offer comparison?
Yes, but compare all benefits, PF, gratuity, variable pay, leave policy and reimbursements—not only in-hand salary.
Run the numbers yourself
Use the free SmartFintool calculators to apply this guide to your own money.