Learn Financial & Business — Calculator Tutorials & Guides
18 step-by-step guides for financial & business. Master calculation methods with detailed examples and practical tips.
50/30/20 Budget Calculator & Guide | UK Personal Finance
Use our 50/30/20 budget calculator to split your income into needs, wants & savings. Plan your monthly budget smartly in the UK.
Compound Interest Calculator | Growth & Savings Tool
Use this compound interest calculator to project growth, returns & future value with or without monthly contributions. Perfect for savings/investment planning.
Credit Card Payoff Calculator & Debt Repayment Plan
Use our credit card payoff calculator to plan faster repayment. Compare minimum payments, interest, and payoff time with ease.
Currency Converter – Live Rates & Multi-Currency Tool
Convert currencies in real time. Supports USD, GBP, EUR and more. Use our live currency converter with historical rates and multiple currencies.
Depreciation Calculator – Straight Line, DDB & MACRS
Calculate depreciation using straight-line, double declining balance, SYD, or MACRS methods. Useful for accounting, tax, and asset management.
Discount Calculator – Sale Price & Savings Tool
Quickly calculate discount, sale price and savings. Perfect for shoppers, marketers, and e-commerce pricing decisions.
Interest Calculator – Simple, Compound, APR ↔ APY
Calculate simple and compound interest. Compare APR vs APY for savings, loans, and credit cards using our interest calculator.
Investment Calculator – Growth & Future Value Tool
Calculate investment growth with contributions, inflation, and compounding. Plan savings and retirement with our investment calculator.
Loan Calculator – Payments & Amortization Schedule
Calculate loan payments, amortization schedules, and interest savings. Use our loan calculator for mortgages, auto, and personal loans.
How to Calculate Mortgage Payments - P&I, PMI & Amortisation
Learn how to calculate your total monthly mortgage payment including principal, interest, taxes, insurance, and PMI. Step-by-step amortisation guide with examples.
NPV & IRR Calculator – Investment Analysis Tool
Calculate Net Present Value (NPV) and Internal Rate of Return (IRR) with our investment calculator. Evaluate projects using discounted cash flow analysis.
Refinance Calculator – Savings & Break-Even Tool
Calculate savings, break-even point, and interest reduction with our refinance calculator. Compare mortgage refinance options easily.
Retirement Calculator – Savings & Income Planning
Plan retirement savings and income with our retirement calculator. Estimate nest egg, withdrawals, and pension needs using the 4% rule.
ROI Calculator – Return on Investment Tool
Calculate return on investment (ROI) with simple and annualized methods. Evaluate business projects with our ROI calculator.
Salary Calculator – Hourly, Annual & Overtime Pay
Convert hourly to annual salary, calculate overtime, and compare pay structures. Use our salary calculator for UK and global jobs.
How to Calculate Income Tax - Brackets, Deductions & Credits
Learn how to manually calculate U.S. federal income tax using AGI, deductions, tax brackets, and credits. Step-by-step guide with real examples.
Car Lease Guide
Learn how car lease calculator works with formulas, examples, and pro tips. Understand inputs, outputs, and common mistakes in one practical guide.
Auto Loan Guide
Learn how auto loan calculators work, with the amortisation formula, examples, overpayment tips, and common pitfalls explained in plain English.