Institutional-Grade Financial Calculators. Built with Engineering Precision.
RupeeTools combines rigorous software engineering with certified financial planning frameworks to give Indian taxpayers, salaried professionals, and DIY investors accurate, privacy-first wealth tools.
Why RupeeTools Exists
Most financial calculators in India suffer from two major problems: they are either lead-generation funnels masquerading as tools—forcing you to surrender your phone number and email only to bombard you with insurance telemarketers and loan spam—or they are outdated web widgets running simplistic high-school math that completely ignore real-world financial nuances.
Real Indian financial life is rarely a straight line. Salaried earners need accurate calculations for step-up SIPs that keep pace with annual appraisals, marginal tax relief under Section 87A, presumptive taxation under Section 44ADA, and rolling returns that reveal historical volatility rather than deceptive point-to-point gains.
RupeeTools was built to solve this once and for all: 100% free forever, zero ad-clutter, and powered exclusively by client-side browser execution. Your sensitive financial data—whether it is your take-home salary breakdown, tax deductions, or imported CAS statements—runs locally in your browser memory and never gets stored or transmitted to our servers.
- ✕Capturing your phone number or email for sales calls
- ✕Simplistic linear math that ignores taxes, inflation, and step-ups
- ✕Distracting banner ads, paywalls, and sponsored pop-ups
- ✓100% client-side execution—your data stays in your browser
- ✓Formulas updated for FY 2026-27 (AY 2027-28) tax rules
- ✓Engineering precision with clean, responsive, open access
Created & Maintained By
Ganamurthy N N
Creator & Author, RupeeTools.in | Software Engineering Leader
“I am a Software Engineering Manager with an M.S. in Software Engineering from BITS Pilani and a decade of hands-on experience investing in Indian equities and mutual funds. Out of a deep personal interest in structured wealth management, I have completed three specialist levels of the Certified Financial Planner (CFP) certification pathway with FPSB (covering Investment Planning, Retirement & Tax Planning, and Risk & Estate Planning). I created RupeeTools.in as an independent, non-commercial, weekend passion project to give fellow Indian retail investors and salaried professionals access to fast, privacy-first, institutional-grade financial calculators—completely free of ads, paywalls, or spam.”
Engineering Rigor
Deterministic algorithms, edge-case testing, and unit-tested financial formulas.
Zero Commercial Bias
No affiliate commissions, no sponsored product placement, and no distributor kickbacks.
Strict Privacy
Your data never touches our backend. Calculations occur strictly on your machine.
Calculation Methodology & Data Sources
Financial algorithms must be verifiable. We anchor every formula and data point in official Indian statutes and regulatory benchmarks.
Tax & Salary Logic
FY 2026-27Updated for FY 2026-27 (AY 2027-28) based on the Income Tax Act, 1961, Finance Act amendments, and official CBDT circulars. Accurately handles revised tax slabs, standard deduction, Section 87A rebate thresholds, marginal relief, and Section 44ADA presumptive income rules.
Mutual Fund & ETF Analytics
Official FeedsSourced from official AMFI NAV feeds, NSE/BSE index disclosures, and SEBI categorization norms. Historical returns, rolling return distributions, and expense ratio impact models are calculated using standard time-weighted and money-weighted (XIRR) quantitative methods.
Government Schemes
Quarterly BenchmarkedInterest rates for EPF, PPF, SSY, and NPS are benchmarked against quarterly Ministry of Finance, Reserve Bank of India (RBI), and EPFO notifications. Compounding frequencies (annual for PPF/SSY, monthly for EPF) precisely reflect statutory deposit rules.
100% Client-Side Privacy
Zero-Server StorageEven on data-heavy tools like our CAS Portfolio X-Ray, parsing happens locally in your browser memory via WebAssembly and JavaScript. No financial documents, PAN identifiers, or PII are uploaded, stored, or transmitted to external servers.
Editorial & Regulatory Disclaimer (FPSB & SEBI Compliance)
RupeeTools.in is an independent financial education and analytics platform. While the creator has cleared 3 levels of the CFP certification examination, RupeeTools is not a SEBI-Registered Investment Advisor (RIA) and does not provide personalized investment advice. All calculators, fundamental scores, and strategy screens (such as Coffee Can or Magic Formula) are strictly for educational and informational modeling. Please consult a SEBI-registered advisor or Chartered Accountant before executing financial decisions.
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