Guides
200 plain-English guides with worked examples, each linked to a free calculator.
Tax and pay
- How to Calculate Income Tax in the UK: Step-by-Step Guide
- Income Tax: Common Mistakes, Tips and FAQs
- How to Calculate Take-Home Pay in the UK: Step-by-Step Guide
- Take-Home Pay: Common Mistakes, Tips and FAQs
- How to Calculate National Insurance in the UK: Step-by-Step Guide
- National Insurance: Common Mistakes, Tips and FAQs
- How to Calculate Scottish Income Tax in the UK: Step-by-Step Guide
- Scottish Income Tax: Common Mistakes, Tips and FAQs
- How to Calculate Student Loan Repayments in the UK: Step-by-Step Guide
- Student Loan Repayments: Common Mistakes, Tips and FAQs
- How to Calculate Pension Tax Relief in the UK: Step-by-Step Guide
- Pension Tax Relief: Common Mistakes, Tips and FAQs
- How to Calculate Dividend Tax in the UK: Step-by-Step Guide
- Dividend Tax: Common Mistakes, Tips and FAQs
- How to Calculate Capital Gains Tax in the UK: Step-by-Step Guide
- Capital Gains Tax: Common Mistakes, Tips and FAQs
- How to Calculate Salary Sacrifice in the UK: Step-by-Step Guide
- Salary Sacrifice: Common Mistakes, Tips and FAQs
- How to Calculate Hourly Rate to Salary in the UK: Step-by-Step Guide
- Hourly Rate to Salary: Common Mistakes, Tips and FAQs
- How to Calculate Pro Rata Salary in the UK: Step-by-Step Guide
- Pro Rata Salary: Common Mistakes, Tips and FAQs
- How to Calculate Overtime Pay in the UK: Step-by-Step Guide
- Overtime Pay: Common Mistakes, Tips and FAQs
- How to Calculate a Pay Rise in the UK: Step-by-Step Guide
- A Pay Rise: Common Mistakes, Tips and FAQs
- How to Calculate VAT in the UK: Step-by-Step Guide
- VAT: Common Mistakes, Tips and FAQs
- How to Calculate Self-Employed Tax in the UK: Step-by-Step Guide
- Self-Employed Tax: Common Mistakes, Tips and FAQs
Property and mortgages
- How to Calculate Stamp Duty in the UK: Step-by-Step Guide
- Stamp Duty: Common Mistakes, Tips and FAQs
- How to Calculate LBTT in Scotland in the UK: Step-by-Step Guide
- LBTT in Scotland: Common Mistakes, Tips and FAQs
- How to Calculate Land Transaction Tax in Wales in the UK: Step-by-Step Guide
- Land Transaction Tax in Wales: Common Mistakes, Tips and FAQs
- How to Calculate Mortgage Repayments in the UK: Step-by-Step Guide
- Mortgage Repayments: Common Mistakes, Tips and FAQs
- How Much You Can Borrow for a Mortgage in the UK: Step-by-Step Guide
- How Much You Can Borrow for a Mortgage: Common Mistakes, Tips and FAQs
- How to Calculate Loan to Value in the UK: Step-by-Step Guide
- Loan to Value: Common Mistakes, Tips and FAQs
- How to Calculate Rental Yield in the UK: Step-by-Step Guide
- Rental Yield: Common Mistakes, Tips and FAQs
- How to Calculate Mortgage Overpayments in the UK: Step-by-Step Guide
- Mortgage Overpayments: Common Mistakes, Tips and FAQs
- How to Calculate Saving for a House Deposit in the UK: Step-by-Step Guide
- Saving for a House Deposit: Common Mistakes, Tips and FAQs
- How to Calculate Council Tax Discounts in the UK: Step-by-Step Guide
- Council Tax Discounts: Common Mistakes, Tips and FAQs
- How to Calculate Remortgage Savings in the UK: Step-by-Step Guide
- Remortgage Savings: Common Mistakes, Tips and FAQs
Savings and loans
- How to Calculate Compound Interest in the UK: Step-by-Step Guide
- Compound Interest: Common Mistakes, Tips and FAQs
- How to Calculate a Savings Goal in the UK: Step-by-Step Guide
- A Savings Goal: Common Mistakes, Tips and FAQs
- How to Calculate ISA Growth in the UK: Step-by-Step Guide
- ISA Growth: Common Mistakes, Tips and FAQs
- How to Calculate Loan Repayments in the UK: Step-by-Step Guide
- Loan Repayments: Common Mistakes, Tips and FAQs
- How to Calculate PCP Car Finance in the UK: Step-by-Step Guide
- PCP Car Finance: Common Mistakes, Tips and FAQs
- How to Calculate Paying Off a Credit Card in the UK: Step-by-Step Guide
- Paying Off a Credit Card: Common Mistakes, Tips and FAQs
- How to Calculate APR and Monthly Interest in the UK: Step-by-Step Guide
- APR and Monthly Interest: Common Mistakes, Tips and FAQs
- How to Calculate Inflation in the UK: Step-by-Step Guide
- Inflation: Common Mistakes, Tips and FAQs
- How to Calculate Your Pension Pot in the UK: Step-by-Step Guide
- Your Pension Pot: Common Mistakes, Tips and FAQs
- How to Calculate an Emergency Fund in the UK: Step-by-Step Guide
- An Emergency Fund: Common Mistakes, Tips and FAQs
- How to Calculate a 50/30/20 Budget in the UK: Step-by-Step Guide
- A 50/30/20 Budget: Common Mistakes, Tips and FAQs
Home and energy
- How to Calculate Your Energy Bill in the UK: Step-by-Step Guide
- Your Energy Bill: Common Mistakes, Tips and FAQs
- How to Calculate Appliance Running Costs in the UK: Step-by-Step Guide
- Appliance Running Costs: Common Mistakes, Tips and FAQs
- How to Calculate Gas Units to kWh in the UK: Step-by-Step Guide
- Gas Units to kWh: Common Mistakes, Tips and FAQs
- How to Calculate Solar Panel Payback in the UK: Step-by-Step Guide
- Solar Panel Payback: Common Mistakes, Tips and FAQs
- How to Calculate Heat Pump vs Gas Boiler Running Costs in the UK: Step-by-Step Guide
- Heat Pump vs Gas Boiler Running Costs: Common Mistakes, Tips and FAQs
- How Much Paint You Need in the UK: Step-by-Step Guide
- How Much Paint You Need: Common Mistakes, Tips and FAQs
- How Many Tiles You Need in the UK: Step-by-Step Guide
- How Many Tiles You Need: Common Mistakes, Tips and FAQs
- How to Calculate Flooring Quantities in the UK: Step-by-Step Guide
- Flooring Quantities: Common Mistakes, Tips and FAQs
- How Many Rolls of Wallpaper You Need in the UK: Step-by-Step Guide
- How Many Rolls of Wallpaper You Need: Common Mistakes, Tips and FAQs
- How to Calculate Concrete Volume in the UK: Step-by-Step Guide
- Concrete Volume: Common Mistakes, Tips and FAQs
Motoring
- How to Calculate Fuel Costs for a Journey in the UK: Step-by-Step Guide
- Fuel Costs for a Journey: Common Mistakes, Tips and FAQs
- How to Calculate MPG Conversions in the UK: Step-by-Step Guide
- MPG Conversions: Common Mistakes, Tips and FAQs
- How to Calculate Car Running Cost Per Mile in the UK: Step-by-Step Guide
- Car Running Cost Per Mile: Common Mistakes, Tips and FAQs
- How to Calculate Journey Times in the UK: Step-by-Step Guide
- Journey Times: Common Mistakes, Tips and FAQs
- How to Calculate EV Charging Costs in the UK: Step-by-Step Guide
- EV Charging Costs: Common Mistakes, Tips and FAQs
- How to Calculate EV vs Petrol Running Costs in the UK: Step-by-Step Guide
- EV vs Petrol Running Costs: Common Mistakes, Tips and FAQs
- How to Calculate Car Depreciation in the UK: Step-by-Step Guide
- Car Depreciation: Common Mistakes, Tips and FAQs
- How to Calculate Company Car Tax in the UK: Step-by-Step Guide
- Company Car Tax: Common Mistakes, Tips and FAQs
- How to Calculate Mileage Allowance Relief in the UK: Step-by-Step Guide
- Mileage Allowance Relief: Common Mistakes, Tips and FAQs
- How to Calculate Average Speed in the UK: Step-by-Step Guide
- Average Speed: Common Mistakes, Tips and FAQs
Health and fitness
- How to Calculate BMI in the UK: Step-by-Step Guide
- BMI: Common Mistakes, Tips and FAQs
- How to Calculate BMR in the UK: Step-by-Step Guide
- BMR: Common Mistakes, Tips and FAQs
- How to Calculate Daily Calorie Needs in the UK: Step-by-Step Guide
- Daily Calorie Needs: Common Mistakes, Tips and FAQs
- How to Calculate Body Fat Percentage in the UK: Step-by-Step Guide
- Body Fat Percentage: Common Mistakes, Tips and FAQs
- How to Calculate a Healthy Weight Range in the UK: Step-by-Step Guide
- A Healthy Weight Range: Common Mistakes, Tips and FAQs
- How to Calculate Daily Water Intake in the UK: Step-by-Step Guide
- Daily Water Intake: Common Mistakes, Tips and FAQs
- How to Calculate Alcohol Units in the UK: Step-by-Step Guide
- Alcohol Units: Common Mistakes, Tips and FAQs
- How to Calculate Your Pregnancy Due Date in the UK: Step-by-Step Guide
- Your Pregnancy Due Date: Common Mistakes, Tips and FAQs
- How to Calculate Ovulation Dates in the UK: Step-by-Step Guide
- Ovulation Dates: Common Mistakes, Tips and FAQs
- How to Calculate Heart Rate Zones in the UK: Step-by-Step Guide
- Heart Rate Zones: Common Mistakes, Tips and FAQs
- How to Calculate Running Pace in the UK: Step-by-Step Guide
- Running Pace: Common Mistakes, Tips and FAQs
Maths
- How to Calculate Percentages in the UK: Step-by-Step Guide
- Percentages: Common Mistakes, Tips and FAQs
- How to Calculate Percentage Change in the UK: Step-by-Step Guide
- Percentage Change: Common Mistakes, Tips and FAQs
- How to Calculate Reverse Percentages in the UK: Step-by-Step Guide
- Reverse Percentages: Common Mistakes, Tips and FAQs
- How to Calculate Ratios in the UK: Step-by-Step Guide
- Ratios: Common Mistakes, Tips and FAQs
- How to Calculate the Mean, Median and Mode in the UK: Step-by-Step Guide
- The Mean, Median and Mode: Common Mistakes, Tips and FAQs
- How to Calculate Standard Deviation in the UK: Step-by-Step Guide
- Standard Deviation: Common Mistakes, Tips and FAQs
- How to Calculate the Area and Circumference of a Circle in the UK: Step-by-Step Guide
- The Area and Circumference of a Circle: Common Mistakes, Tips and FAQs
- How to Calculate Pythagoras' Theorem in the UK: Step-by-Step Guide
- Pythagoras' Theorem: Common Mistakes, Tips and FAQs
- How to Calculate Area in the UK: Step-by-Step Guide
- Area: Common Mistakes, Tips and FAQs
- How to Calculate Fractions to Decimals in the UK: Step-by-Step Guide
- Fractions to Decimals: Common Mistakes, Tips and FAQs
Conversions
- How to Calculate Stone to Kg Conversions in the UK: Step-by-Step Guide
- Stone to Kg Conversions: Common Mistakes, Tips and FAQs
- How to Calculate Height in Feet to Cm in the UK: Step-by-Step Guide
- Height in Feet to Cm: Common Mistakes, Tips and FAQs
- How to Calculate Celsius to Fahrenheit in the UK: Step-by-Step Guide
- Celsius to Fahrenheit: Common Mistakes, Tips and FAQs
- How to Calculate Miles to Kilometres in the UK: Step-by-Step Guide
- Miles to Kilometres: Common Mistakes, Tips and FAQs
- How to Calculate UK Pints to Litres in the UK: Step-by-Step Guide
- UK Pints to Litres: Common Mistakes, Tips and FAQs
- How to Calculate Ounces to Grams in the UK: Step-by-Step Guide
- Ounces to Grams: Common Mistakes, Tips and FAQs
- How to Calculate Square Feet to Square Metres in the UK: Step-by-Step Guide
- Square Feet to Square Metres: Common Mistakes, Tips and FAQs
Dates and time
- How to Calculate Your Exact Age in the UK: Step-by-Step Guide
- Your Exact Age: Common Mistakes, Tips and FAQs
- How to Calculate the Days Between Two Dates in the UK: Step-by-Step Guide
- The Days Between Two Dates: Common Mistakes, Tips and FAQs
- How to Calculate UK Working Days in the UK: Step-by-Step Guide
- UK Working Days: Common Mistakes, Tips and FAQs
- How to Calculate Holiday Entitlement in the UK: Step-by-Step Guide
- Holiday Entitlement: Common Mistakes, Tips and FAQs
- How to Calculate a Date in the Future in the UK: Step-by-Step Guide
- A Date in the Future: Common Mistakes, Tips and FAQs
Business
- How to Calculate Profit Margin in the UK: Step-by-Step Guide
- Profit Margin: Common Mistakes, Tips and FAQs
- How to Calculate Markup and Selling Price in the UK: Step-by-Step Guide
- Markup and Selling Price: Common Mistakes, Tips and FAQs
- How to Calculate Break-Even Point in the UK: Step-by-Step Guide
- Break-Even Point: Common Mistakes, Tips and FAQs
- How to Calculate Return on Investment in the UK: Step-by-Step Guide
- Return on Investment: Common Mistakes, Tips and FAQs
- How to Calculate Discounts and Sale Prices in the UK: Step-by-Step Guide
- Discounts and Sale Prices: Common Mistakes, Tips and FAQs
- How to Calculate Late Payment Interest in the UK: Step-by-Step Guide
- Late Payment Interest: Common Mistakes, Tips and FAQs
- How to Calculate Statutory Redundancy Pay in the UK: Step-by-Step Guide
- Statutory Redundancy Pay: Common Mistakes, Tips and FAQs
- How to Calculate Statutory Sick Pay in the UK: Step-by-Step Guide
- Statutory Sick Pay: Common Mistakes, Tips and FAQs
- How to Calculate Statutory Maternity Pay in the UK: Step-by-Step Guide
- Statutory Maternity Pay: Common Mistakes, Tips and FAQs
- How to Calculate Minimum Wage in the UK: Step-by-Step Guide
- Minimum Wage: Common Mistakes, Tips and FAQs