About CalcMantra
CalcMantra (calcmantra.com) is a free online destination for EMI, SIP, tax, GST, and salary calculators built for India. Enter your numbers, see instant estimates, and read the formula and assumptions on the same page.
What we publish
CalcMantra currently offers 40+ calculators across loans, savings, salary, tax, and everyday math — plus guides and popular finance question pages with worked examples in INR.
- Home loan EMI calculator — monthly instalment, interest, and amortization style estimates
- SIP calculator — projected corpus from monthly investing (assumed returns)
- Income tax calculator — old vs new regime comparison for India
- GST calculator — inclusive and exclusive GST amounts
How CalcMantra is different
CalcMantra is a calculator website focused on personal finance math for India. It is not a phone dialler, IVR platform, or workplace ergonomics product. If you searched for “CalcMantra” or typed calcmantra.com, you are in the right place for free online EMI, SIP, and tax tools.
Content was last reviewed on 2026-09-18. Rates, slabs, and statutory rules change — always confirm critical decisions with your lender, CA, or official government sources.
Common questions
- What is CalcMantra?
- CalcMantra is a free website of online financial calculators for India. It covers home loan EMI, SIP, income tax (old vs new regime), GST, PPF, gratuity, CTC to in-hand salary, and related tools. Calculations run in your browser.
- Is CalcMantra the same as CallMantra?
- No. CalcMantra (calcmantra.com) is a calculator and personal-finance tools site. It is not a calling, IVR, or business-communication product. The names sound similar; the products are unrelated.
- Do I need an account to use the calculators?
- No. You can open any calculator and get instant estimates without signing up. Optional accounts are only for saved preferences if you choose to register later.
- Are the results advice or a loan / tax offer?
- No. Results are educational estimates based on the formulas and assumptions shown on each page. They are not financial advice, a loan sanction, or a tax filing.