Calculators
Simple, free tools for your finances. Pick a calculator to start: they run in your browser, with no sign-up and nothing stored.
Savings and Investment Calculators
Free tools to see how your money grows. Start with compound interest.
5 calculators →Tax Calculators
Work out what you owe the Spanish tax office, with current rates and rules.
23 calculators →Calculators for the Self-Employed
Your contributions, instalments and the quarterly returns you have to file.
15 calculators →Company Calculators
Corporation tax and the returns a company files, as opposed to a sole trader.
4 calculators →Property Calculators
What it costs to buy, let and keep a home, starting from the cadastral value.
11 calculators →Employment Calculators
What you are owed when a job ends, and the holiday days you have accrued.
12 calculators →Maths Calculators
Everyday operations solved step by step: percentages, rule of three and discounts.
5 calculators →
How they work
Each calculator does one thing and explains the result: you see the working, not just the final figure. They all run in your browser, so the amounts you enter never leave your device. Alongside each one you will find articles explaining the formula. They are educational estimates, not financial advice.
The calculators provide educational estimates and do not constitute financial advice.