Finance

Plan, budget and decide with confidence.

Currency, tax, interest and savings calculators with transparent formulas you can verify.

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How Loan EMI Is Calculated: The Formula Explained
Finance

How Loan EMI Is Calculated: The Formula Explained

How the EMI formula turns a loan amount, rate and term into a monthly payment, plus tips for borrowing at a lower cost.

2 min readUpdated
How Compound Interest Works: Formula and Examples
Finance

How Compound Interest Works: Formula and Examples

How compound interest grows money, the formula behind it, how it compares with simple interest, and tips for getting more from it.

2 min readUpdated
How Simple Interest Works: Formula and Worked Example
Finance

How Simple Interest Works: Formula and Worked Example

The simple interest formula, a worked example, and when simple interest applies in place of compound interest.

2 min readUpdated
How to Calculate Sales Tax (and Remove It From a Total)
Finance

How to Calculate Sales Tax (and Remove It From a Total)

How to add sales tax to a price, how to work backwards from a tax-inclusive total without the common mistake, and a worked example.

2 min readUpdated
How to Calculate Profit Margin (with a Worked Example)
Finance

How to Calculate Profit Margin (with a Worked Example)

The formulas for profit margin and markup, a worked example, and how to price with the right number.

2 min readUpdated
How Long Will It Take to Reach a Savings Goal?
Finance

How Long Will It Take to Reach a Savings Goal?

How to work out the months needed to hit a savings target, a worked example, and why inflation moves the goal.

2 min readUpdated
Hourly to salary: the 2,080-hour rule and its limits
Finance

Hourly to salary: the 2,080-hour rule and its limits

How yearly salary is derived from an hourly rate, when the calculation oversimplifies, and how to compare two job offers fairly.

2 min readUpdated
VAT explained: adding and removing tax the right way
Finance

VAT explained: adding and removing tax the right way

The formula for adding VAT to a net price and removing it from a gross price — plus the one mistake everyone makes in reverse.

2 min readUpdated
GST rates in India: slabs, CGST and SGST explained
Finance

GST rates in India: slabs, CGST and SGST explained

How India’s four GST slabs split between centre and state, when IGST applies, and how to add or remove GST from a price.

2 min readUpdated
What is CAGR: annualized growth without the jargon
Finance

What is CAGR: annualized growth without the jargon

The compound annual growth rate formula, a worked example, and why it disagrees with simple averages when returns are volatile.

2 min readUpdated

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