About FinHub's calculators
FinHub is a free collection of financial calculators built for everyday money decisions in India — working out an EMI before visiting a bank, checking whether a SIP will reach a goal, comparing two tax regimes, or finding out what a home really costs once stamp duty and interest are counted. Every tool runs in your browser, requires no account, and shows the arithmetic behind the answer rather than just the answer.
Who these calculators are for
Most people meet these numbers at a moment when they are also being sold something. A loan officer quotes an EMI, a relationship manager suggests a product, a builder presents a payment plan. Having your own figure beforehand changes that conversation entirely, because you already know what is reasonable and what the trade-offs are.
The tools assume no financial background. Each one starts with sensible defaults, explains what every input means, and sets out the formula it uses so you can check the result rather than take it on trust. If you want to go deeper, each calculator page carries a detailed explanation of the underlying method and the assumptions it makes.
How to get a useful answer
A calculator can only be as accurate as its inputs, and the most common source of a misleading result is an optimistic assumption rather than a mistake in the arithmetic. Enter the interest rate you have actually been quoted, not the teaser rate in an advertisement. Use the mileage your car actually returns, not the brochure figure. Assume an investment return you would be comfortable defending to someone sceptical.
A habit worth adopting is to run every calculation twice, once with your expected numbers and once with a pessimistic set. If a plan only works under the optimistic scenario, it is worth knowing that before you commit rather than afterwards.
How the calculators are built
All of the tools share a single, tested library of financial functions, so an EMI computed on the home loan page uses exactly the same code as the one on the car loan page. The formulas follow standard conventions: reducing-balance interest for loans, monthly compounding for EMIs, quarterly compounding for fixed deposits as most Indian banks apply it, and beginning-of-period instalments for SIPs, which is how mandates are normally debited.
Where a convention could reasonably go either way, the choice is stated on the page rather than hidden. Tax calculations use published slab structures, rebate limits, and cess rates, and the pages note which provisions are modelled and which are not.
What these tools deliberately do not do
FinHub does not recommend products, rank banks, generate leads, or pass your details to lenders. There is no signup, no comparison table pointing at a preferred partner, and no mechanism by which anyone pays us to be suggested to you. The calculators also do not model every edge case — surcharge on very high incomes, marginal tax relief, broken-period interest, and construction-linked disbursement are examples of real-world complications that a general-purpose tool cannot capture.
What you get is transparent arithmetic on the numbers you supply. The decisions, and the professional advice that the larger ones deserve, remain yours.
Reading the results sensibly
Treat an output as a well-grounded estimate rather than a quotation. A bank will apply its own credit assessment, a fund will deliver whatever markets deliver, and tax law changes with each Finance Act. The value of a calculation lies less in the exact figure than in the relationships it exposes: how sharply total interest responds to tenure, how much of a long-term corpus comes from growth rather than contributions, how large inflation looms over a fifteen-year goal.
Those relationships hold even when the precise numbers shift, and they are what make a decision easier to reason about.