How are the calculator numbers calculated?
Each calculator uses the same method that banks, India Post and the Income Tax Department use. The formula is shown on the page with a worked example, so you can verify the math yourself.
Calculators · India
Gainly
Free calculators for Indian financial planning, built on official rates and rules
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A collection of free financial calculators for SIPs, loans, deposits, taxes and retirement planning in India, with formulas shown and no sign-up required.
The story so far
Gainly provides free financial calculators designed for Indian users, covering investment planning, savings, loans, taxation and retirement. Each calculator uses the same methods as banks and government departments, with formulas displayed alongside worked examples so users can verify the calculations. The calculators are built on current Indian tax slabs, Post Office rates, RBI limits and GST rules, updated when government changes occur. Users can access all calculators without signing up or sharing personal information, and results include shareable links that preserve entered values. The site is ad-supported and run by Manoj from Rajkot, Gujarat.
Typeset features
- SIP calculator for monthly investment growth
- EMI calculator for loans
- Income tax calculator for new and old regime comparison
- Retirement and NPS calculators
- GST calculator
- Formulas shown with worked examples for verification
- Support for multiple languages: English, Gujarati and Hindi
- Updated with current tax slabs, rates and government rules
Pricing
Pricing model: Free
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Questions and answers
Are these results financial advice?
No, results are estimates to help you plan. They are not financial, tax or investment advice. If a decision involves a large amount or your tax situation is complicated, talk to a qualified adviser.
How does Gainly pay for itself?
Gainly is free to use and runs on ads from Google, which are clearly marked as ads. Advertisers have no say in how the site calculates anything or what is written.
Do you store the numbers I enter?
No, nothing you type is stored. You can share any result with a link that reopens it with your numbers.
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