Official Sources
Every calculator and guide on CoinMind is verified against an official primary source. This page lists every source we use, what we use it for and which tools rely on it. We link directly to the source so you can verify the data yourself.
We do not use other finance websites as primary sources. Official government and regulatory publications are the only basis for the financial rules in our calculators.
Income Tax
Tax slabs, rebates, deductions, exemptions, TDS rates, capital gains rules
Investments & Mutual Funds
SIP methodology, NAV data, fund category definitions
Mutual fund regulations, capital market rules, investor protection guidelines
Banking & Deposits
Repo rate, FD interest methodology, EMI amortisation standards, bank lending rates
Savings Schemes
PPF interest rate, NSC, POMIS, Sukanya Samriddhi Yojana rules
Provident Fund & Pension
EPF interest rate, contribution rules, EPS, withdrawal conditions
NPS contribution rules, annuity provisions, tier-1 and tier-2 accounts
Tax (Indirect)
GST rates, GST calculation methodology, reverse charge, composition scheme
Gratuity & Salary
Inflation & Macroeconomics
CPI inflation data, WPI data
Missing a source? If you believe a calculator uses an outdated or incorrect source, email us at coinmindofficial@gmail.com. We investigate every report.
Related: Calculator methodology · Financial review process · Corrections log