Free UK money calculators
Quick, private calculators that run in your browser. Nothing you type is stored or sent anywhere.
- £1,000 trading allowance calculator: should you claim the allowance or your actual expenses, and do you need to register for Self Assessment?
- Bills monthly cost calculator: turn weekly, quarterly and annual bills into one monthly figure.
Guides
- UK £1,000 trading allowance guide: plain-English overview of full and partial relief, allowance vs expenses, and Self Assessment — with links to GOV.UK.
- UK household bills & budget guide: how to list mixed-frequency bills, convert them to monthly, and stay ahead of renewals.
Want it all in a spreadsheet?
Tidy Sheets makes simple Excel and Google Sheets templates for UK side hustles and household budgets.
Browse the templates