I work in data science, and I got tired of Indian finance calculators that give you one number with no explanation. So I built RupeeCheck (https://rupeecheck.in): free calculators that show where every rupee goes. Building them changed how I think about a few things: 1. ₹12 LPA isn't ₹1 lakh a month. It's about ₹88,276. But here's the part I didn't expect: of the ₹1.4 L that never reaches your bank, ₹1.38 L is your own PF and gratuity. Only ₹2,400 (professional tax) actually leaves. Income tax is zero at that salary under the new regime. 2. The old regime loses even when you'd expect it to win. ₹18 LPA in Pune, paying ₹30k rent, maxing 80C, with health insurance. That's the old regime's best case. The new regime still comes out about ₹42k a year ahead. 3. For NRIs, the Indian job matters more than the US savings. On the return-to-India calculator, one sample profile needed ~₹3.3 Cr to move back with no job. With a ₹10 LPA job in India, that dropped to ~₹1.8 Cr. (Long-range projection, so an illustration rather than a forecast.) About the site: 14 calculators (salary, tax regime, HRA, SIP, EMI, FD, FIRE, rent vs buy, moving abroad, returning to India, and more), plus a life simulator that [one line on what it does]. No signup, and calculations run in your browser, so what you type isn't sent to my servers. It's an estimate tool, not tax advice, and it hasn't had a chartered accountant's review yet. What I'd love from you: if any number doesn't match your actual payslip, tell me. That's genuinely the best way I find mistakes. And if there's a calculator you wish existed, I'm listening.   submitted by   /u/ychakri123 [link]   [comments]