Compare scenarios side-by-side
Pick a calculator, set up two scenarios, and see which wins on the numbers that actually matter.
Charity Donation Tax
Donate £100 vs £500 — see who delivers more per pound.
Start comparing →Compound Interest
20 years vs 30. Big lump sum vs steady drip. Which ends bigger?
Start comparing →FIRE Number
Save 40% vs 60% — how many years sooner is the finish line?
Start comparing →Mortgage Affordability
Stretch your deposit or stay safe — what's the payment cost?
Start comparing →True Cost of a Car
New vs used. Petrol vs EV. Who pays less per mile?
Start comparing →VAT / Sales Tax
Standard rate vs reduced — see the breakdown both ways.
Start comparing →US Capital Gains
Sell now vs hold for long-term — which keeps more after tax?
Start comparing →UK Capital Gains
Two disposal scenarios — see which CGT bill is smaller.
Start comparing →Self-Employed Tax
Different revenue / SEP-IRA / QBI setups — keep more after tax.
Start comparing →Freelance vs Employed
Two day-rate offers — which actually puts more in the bank?
Start comparing →Rent vs Buy
London buy vs Manchester buy — net worth in 30 years.
Start comparing →