Standard formulas
Our tools use standard UK financial formulas commonly used across the industry.
Use practical calculators and plain-English guidance to pressure-test debt plans, mortgage choices, tax estimates and savings goals before you act. Results are general estimates for planning, not personal financial advice.
Each area combines estimates with context so you can compare options, understand trade-offs and decide what to check next.
Work out whether the payment, deposit and upfront costs fit the purchase you are considering before you start comparing products.
Pages are built to show assumptions, limits and follow-up checks clearly so you can use the result as a decision aid rather than a black-box answer.
See how interest, payment size, fees and product changes alter the real cost of borrowing before you choose a repayment route.
Use focused tools for common checks when you already know the question and just need a reliable estimate.
Choose a category below to explore tools and practical guides designed to help you make better financial decisions.
How our calculations work
Our tools use standard UK financial formulas commonly used across the industry.
Where assumptions are required, we state them clearly within each tool.
Calculations are designed to help you compare scenarios and understand potential outcomes.
Our calculators are educational in nature and not a substitute for advice.
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Explore toolsBuilt for UK financial planning
Financial decisions in the UK are shaped by changing rules, rates and regulations. Our tools reflect the factors that matter most.
We factor in current UK tax thresholds, which can change each tax year.
Affordability assessments and lending criteria differ between providers.
Interest rates and terms vary across banks and building societies.
Rates depend on your credit profile and market conditions.
Our tools help you estimate, compare and plan with more confidence.
We reference official UK sources to help keep our information accurate and reliable.
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