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Finance calculators

Loan EMI and mortgage payments, compound interest, SIP and retirement plans, NPV and IRR, bond yields, option prices and income tax for India, the US and the UK, with full schedules and charts.

49 calculators, 291 checked worked examples.

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Loans

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Income

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Tax

Retirement

How to choose a finance calculator

Match the question to the cash flows

Use EMI for a loan's scheduled principal-and-interest payment. Use the mortgage calculator when taxes, insurance and other housing costs belong in the monthly budget. A refinance comparison answers a different question: whether changing loans helps over your planned holding period after fees and remaining balances. Compare scenarios with the same dates and assumptions. A lower monthly payment can come from extending the term and can increase total interest.

Loan payments · Mortgage budget and guide · Refinance timing

Separate assumptions from guarantees

Compounding frequency, contribution timing, fees and inflation all affect a growth projection. Enter an annual rate in the field intended for it, and check whether the result is nominal or adjusted for inflation. Tax and retirement tools identify the jurisdiction and year they model. Use a range of plausible inputs and read the limitations before comparing plans. These calculations illustrate a model; they do not predict returns or determine which product you should buy.

Compound interest guide · Retirement scenarios

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