calcbase.
Estimates for real decisions · 2026/27 rates

Can I afford it?

Type what you're weighing up. Every calculator on the site is free, works in your browser, and shows how it reached the number.

I want to work out ?

Everything on the site

3 live, more in the works

Money

What comes in, what the taxman takes, what you owe and what you're building.

Property

Buying, renting, moving and letting. The biggest numbers on the site.

  • Mortgage1
  • Rentingsoon
  • Moving & Buying Costssoon
  • Landlordsoon

Car

What a car costs to get and what it costs to keep.

Bills

The recurring outgoings that quietly set your monthly floor.

  • Energysoon
  • Water & Broadbandsoon
  • Insurancesoon
  • Council Taxsoon

Family

Costs you take on for other people, from a first pet to later-life care.

  • Childrensoon
  • Petssoon
  • Educationsoon
  • Weddingssoon
  • Care Costssoon

Lifestyle

Costs you choose. Worth knowing before you commit to them.

  • Holidays & Travelsoon
  • Hobbies & Subscriptionssoon
  • Health & Fitnesssoon

Where the numbers come from

Tax bands, National Insurance and student loan thresholds are taken from HMRC and gov.uk for 2026/27, and listed in full on every page that uses them.

What this is not

Arithmetic, not advice. Nothing here recommends a product, a lender or a course of action, and no result is a decision you should act on alone.

Nothing is stored

Every calculation runs in your browser. No account, no saved figures, no data sent anywhere.