Free Calculators — Tax, GST, HRA, Gratuity & More
Open Free Calculators — free →
What you can do here
- Income tax calculator (AY 2026-27) — old vs new regime with 87A rebate
- HRA exemption calculator — Section 10(13A) with metro/non-metro
- Gratuity calculator — Payment of Gratuity Act
- Reverse GST and GST calculator (5%, 12%, 18%, 28%)
- SIP, EMI, PPF, FD, NPS and salary CTC calculators
- Capital gains (LTCG/STCG), stamp duty and GST late-fee calculators
- Section 234F late fee and 234A interest calculators
Frequently asked questions
Are all the calculators really free?
Yes — every calculator is 100% free with no signup. They are for estimation; verify with a licensed CA for your specific figures.
Which calculator compares the two tax regimes?
Use the Income Tax Calculator (AY 2026-27) — it computes your tax under both the old and new regimes and shows which saves you more.
How do I calculate HRA exemption?
HRA exemption under Section 10(13A) is the minimum of: (a) actual HRA received, (b) rent paid minus 10% of basic salary, (c) 50% of basic salary (metro) or 40% (non-metro). Our HRA calculator computes this in seconds.
What is the GST rate on most services?
Most services attract 18% GST. Some services (healthcare, education) are exempt. Goods rates vary from 0% to 28%. Use our GST calculator to check the exact rate for your product or service.
Related reading
India Law Simplified is an AI-assisted research & drafting tool, not a substitute for a licensed advocate or CA. Verify all figures and steps with a professional before acting.