Calculadora CapitalYour money,
in numbers.
75 calculators and 81 guides for people living in Spain, with the formula and the sources in plain sight. No sign-up, nothing to sell.
- Official sources cited
- No sign-up
75
calculators
81
guides
7
topics
Try it
Drag the numbers. The result updates as you go.
Save €150 a month, for 20 years, at 5 % a year, and you end up with
Drag the numbers to adjust
€61,655
Gross estimate, before tax and inflation. Not financial advice.
Pick a topic
Each topic gathers the calculators and the guides that explain them. Pick where to start.
Start with one of these
A selection to get going: from saving to percentages, discounts and VAT.
Savings and InvestmentCompound Interest CalculatorWork out how your money grows with compound interest: enter the starting amount, the monthly contribution, the annual interest rate and the term, and see the future value with a year-by-year breakdown.Calculate →
TaxSpanish VAT Calculator (IVA)Add or remove Spanish VAT from any amount: pick the rate (21%, 10% or 4%) and see the net amount, the VAT and the final price, with a line-by-line breakdown.Calculate →
MathsPercentage CalculatorWork out percentages, discounts and increases in one place: what a percentage of a value is, what percentage one figure is of another, and what happens to a price when it rises or falls by a given percentage.Calculate →
Compound Interest CalculatorInflation CalculatorTAE – TIN Calculator (Spain)Spanish Inheritance Tax CalculatorSpanish forced heirshipSpanish form 600Spanish form 720 calculatorForm 211: the 3% withholdingSpanish form 030Form 216: withholding for non-residentsSpanish personal allowanceSpanish Road Tax (IVTM) CalculatorSpanish electric car grant calculatorCanary Islands IGIC calculatorSpanish Self-Employed Contribution CalculatorFamily collaboratorSpanish Quarterly Income-Tax Instalment (Modelo 130) CalculatorSpanish Withholding Tax Return (Modelo 111) CalculatorSpanish form 390 calculatorSpanish form 349 calculatorSpanish business activity taxSpanish equivalence surchargeSpanish form 200 calculatorSpanish form 232 checkerSpanish Municipal Capital Gains Tax CalculatorSpanish Property Tax (IBI) CalculatorSpanish Rent Withholding Return (Modelo 115) CalculatorSpanish rent increase calculatorSpanish arras depositFiniquito Calculator (Spain)Vacation Days Calculator (Spain)Spanish IPREM calculatorSpanish leave of absenceSpanish paid leave calculatorSpanish training contractPercentage CalculatorDiscount CalculatorSpanish statutory and late-payment interest calculatorCompound Interest CalculatorInflation CalculatorTAE – TIN Calculator (Spain)Spanish Inheritance Tax CalculatorSpanish forced heirshipSpanish form 600Spanish form 720 calculatorForm 211: the 3% withholdingSpanish form 030Form 216: withholding for non-residentsSpanish personal allowanceSpanish Road Tax (IVTM) CalculatorSpanish electric car grant calculatorCanary Islands IGIC calculatorSpanish Self-Employed Contribution CalculatorFamily collaboratorSpanish Quarterly Income-Tax Instalment (Modelo 130) CalculatorSpanish Withholding Tax Return (Modelo 111) CalculatorSpanish form 390 calculatorSpanish form 349 calculatorSpanish business activity taxSpanish equivalence surchargeSpanish form 200 calculatorSpanish form 232 checkerSpanish Municipal Capital Gains Tax CalculatorSpanish Property Tax (IBI) CalculatorSpanish Rent Withholding Return (Modelo 115) CalculatorSpanish rent increase calculatorSpanish arras depositFiniquito Calculator (Spain)Vacation Days Calculator (Spain)Spanish IPREM calculatorSpanish leave of absenceSpanish paid leave calculatorSpanish training contractPercentage CalculatorDiscount CalculatorSpanish statutory and late-payment interest calculator
Simple Interest CalculatorSpanish Treasury Bill CalculatorSpanish VAT Calculator (IVA)Spanish Gift Tax CalculatorSpanish usufructSpanish wealth tax calculatorSpanish form 210 calculatorSpanish form 840Form 151: the Beckham lawSpanish form 296: the annual IRNR summarySpanish form 140 and the maternity deductionSpanish registration taxSpanish mutualist pension refundRecovering VAT on an unpaid invoiceCompany-owner autónomoSpanish Quarterly VAT Return (Modelo 303) CalculatorSpanish form 131 checkerSpanish form 190 calculatorSpanish form 347 calculatorSpanish form 184 calculatorSpanish Verifactu checkerSpanish corporation tax calculatorSpanish form 202 calculatorSpanish capital gains taxSpanish Property Transfer Tax CalculatorSpanish building taxSpanish form 180 calculatorSpanish waste fee calculatorSpanish youth rent aid calculatorDismissal Severance Calculator (Spain)Spanish form 145 calculatorSpanish student grant calculatorSpanish resignation notice calculatorSpanish seasonal work calculatorPart-time complementary hoursRule of Three CalculatorSpanish working daysSimple Interest CalculatorSpanish Treasury Bill CalculatorSpanish VAT Calculator (IVA)Spanish Gift Tax CalculatorSpanish usufructSpanish wealth tax calculatorSpanish form 210 calculatorSpanish form 840Form 151: the Beckham lawSpanish form 296: the annual IRNR summarySpanish form 140 and the maternity deductionSpanish registration taxSpanish mutualist pension refundRecovering VAT on an unpaid invoiceCompany-owner autónomoSpanish Quarterly VAT Return (Modelo 303) CalculatorSpanish form 131 checkerSpanish form 190 calculatorSpanish form 347 calculatorSpanish form 184 calculatorSpanish Verifactu checkerSpanish corporation tax calculatorSpanish form 202 calculatorSpanish capital gains taxSpanish Property Transfer Tax CalculatorSpanish building taxSpanish form 180 calculatorSpanish waste fee calculatorSpanish youth rent aid calculatorDismissal Severance Calculator (Spain)Spanish form 145 calculatorSpanish student grant calculatorSpanish resignation notice calculatorSpanish seasonal work calculatorPart-time complementary hoursRule of Three CalculatorSpanish working days
How it works
- 1
Pick a calculator
Choose the right tool for your question from the ones available.
- 2
Enter your numbers
Fill in the fields. The result updates as you type — no buttons, no sign-up.
- 3
See the result and the formula
Every page shows the working, the official sources, and a guide that goes deeper.
Learn the concepts
Each calculator links to a guide that explains the concept in plain language: what compound interest is, how VAT is calculated, or how percentages work. 81 guides, reviewed and dated.
See all guidesWhy you can trust the numbers
Tested formulas
the maths lives in functions with automated tests, not in hand-written prose.
Official sources
every rate or rule cites its source, such as the Agencia Tributaria, the Banco de España or the INE.
Dates in plain sight
each page shows when it was published, updated and reviewed.
No advice
these are educational estimates, not investment recommendations.
Start understanding your money.
Explore the calculatorsFree. No sign-up. Sources cited on every page.