How to Calculate Investment Return and Annualized Return
Learn how to calculate investment gain and total return, why time matters, and when annualized return is more useful for comparison.
Read guideGuide Category
Finance & Money Guides
Detailed guides for loans, EMI, interest, investments, savings, tax, salary, pricing and everyday financial calculations.
Salary Calculator Guide: Annual, Monthly, Bi-weekly and Hourly Pay
Learn how to convert gross salary between common pay frequencies and understand the difference between bi-weekly and semi-monthly pay.
Read guideHow to Calculate Investment Growth With Regular Contributions
Learn how starting capital, recurring contributions, return assumptions, contribution timing and compounding interact when projecting investment growth.
Read guideHow to Calculate VAT: Formula, Inclusive Price and Total
Learn how to calculate VAT on a tax-exclusive amount, extract VAT from a tax-inclusive price, and understand the assumptions behind the calculation.
Read guideHow to Calculate Profit Margin: Formula, Gross Profit and Example
Learn how to calculate profit and profit margin, distinguish margin from markup, and choose the cost definition that matches the business question.
Read guideHow to Calculate the Inflation-Adjusted Value of Money
Learn how to estimate future cost and purchasing-power changes using an assumed inflation rate, with formulas, examples and important limitations.
Read guideHow to Calculate Simple Interest: Formula, Examples and Total Amount
Learn the simple-interest formula, calculate interest and total amount from principal, rate and time, and understand when the model is appropriate.
Read guideHow to Read a Loan Amortization Schedule: Principal, Interest and Balance
Learn how to read each payment in an amortization schedule, identify principal and interest, track the remaining balance and compare the cost of different loan terms.
Read guideHow to Calculate Break-Even Point: Units, Revenue, Formula and Example
Learn how to calculate the break-even point in units and revenue using fixed costs, variable cost per unit and selling price, with a practical business example.
Read guideHow to Calculate Compound Interest: Formula, Examples and Compounding Frequency
Learn how compound interest is calculated, how compounding frequency changes growth, and how regular contributions affect a future balance.
Read guideHow to Calculate a Mortgage Payment: Formula, Taxes, Insurance and Examples
Learn how to estimate a mortgage principal-and-interest payment, account for down payment and recurring housing costs, and compare different rates and terms.
Read guideHow to Calculate Loan EMI: Formula, Example & Total Interest
Learn how to calculate loan EMI step by step, convert an annual interest rate to a monthly rate, compare loan terms, and estimate total interest and repayment.
Read guideHow to Calculate GST: Formula, Examples, Inclusive and Exclusive Prices
Learn how to calculate GST on a tax-exclusive amount, work backward from a tax-inclusive price, and check the assumptions before using the result on an invoice.
Read guideSales Tax Calculator Guide: Before-Tax Price, Tax Amount and Final Price
Learn how to calculate sales tax from a before-tax price, recover the tax component from an inclusive total, and avoid common rate and rounding mistakes.
Read guideCompound Interest Calculator Guide: How to Use It, Scenarios & Assumptions
Learn how to use the compound interest calculator, choose assumptions, model contributions and compare growth scenarios without treating the result as a guarantee.
Read guideHow to Use a Mortgage Calculator: Payment, Interest, Taxes and Extra Payments
Learn how mortgage calculators model principal and interest, recurring housing costs, loan terms and extra payments, and how to compare scenarios without treating an estimate as a lender quote.
Read guideHow to Calculate the Interest Rate Implied by a Loan Payment
Learn how a loan amount, regular payment and term can be used to estimate the mathematical interest rate, and why the result is not necessarily a lender-disclosed APR.
Read guideGlobal Income Tax Calculator Guide: Why Tax Rates Must Be Local
Understand why a universal tax formula does not exist and how a transparent user-supplied-rate model can be used for general planning.
Read guideTime Value of Money Calculator Guide: PV, FV, PMT, Rate and Number of Periods
Learn how present value, future value, periodic payment, rate and number of periods work together in time-value-of-money calculations.
Read guideInvestment Calculator Guide: Future Value, Contributions, Return and Time
Learn how to use an investment calculator to solve for future value, contributions, starting amount, return or time and compare planning scenarios.
Read guideRetirement Calculator Guide: Estimate a Savings Target, Contributions and Retirement Income
Learn how retirement calculators estimate a savings target from age, retirement timing, income needs, savings, contributions, return and inflation assumptions.
Read guidePayment Calculator Guide: Find a Loan Payment or Estimate Payoff Time
Understand the two common payment questions: the payment required for a chosen loan term and the payoff time produced by a chosen regular payment.
Read guideHow to Use an Interest Calculator: Contributions, Compounding and Inflation
Learn how to use an interest calculator, choose assumptions, model contributions and understand inflation-adjusted results.
Read guideHow to Calculate an Auto Loan Payment: Price, Trade-In, Tax, Fees and Interest
Learn how to build the amount financed for a vehicle and estimate the payment after down payment, trade-in, taxes, fees, interest and loan term.
Read guideLoan Calculator Guide: How to Compare Payments, Interest and Total Cost
Learn how loan amount, interest rate, term and payment frequency affect a modeled payment and total repayment, with a practical way to compare borrowing scenarios.
Read guideSimple Interest vs Compound Interest: Formulas, Examples and Differences
Compare simple and compound interest with formulas, examples, compounding effects and guidance on when each calculation applies.
Read guideHow to Plan a Savings Goal With Regular Contributions
Learn how to turn a savings target and deadline into a practical contribution plan and how interest assumptions affect the projection.
Read guideSales Tax and VAT Calculator Guide: Exclusive vs Inclusive Prices
Learn the difference between tax-exclusive and tax-inclusive calculations and how to work with sales tax or VAT when the applicable rate is already known.
Read guideContinue exploring