Financial calculators for smart investors
Calculate your financial future with our free, professional calculator tools. From compound interest to retirement – all the tools you need for smart financial decisions.
Investing & Saving
Compound Interest Calculator
Calculate the power of compound interest and see how your wealth grows exponentially over the years.
Return Calculator
Calculate your return (IRR) from starting capital, savings rate, duration, and final value – optionally with costs/taxes.
Dividend Calculator
Plan your dividend income: portfolio value, growth, reinvestment, and taxes (simplified).
Withdrawal Plan / FIRE Calculator
Simulate withdrawals (4% rule), inflation, and returns – including simple Monte Carlo scenarios.
Savings Goal Calculator
How much do you need to save to reach target amount X? Solve for savings rate or duration.
Cost Average Calculator
Compare lump sum vs. regular investment over simulated price paths (return/volatility).
Portfolio Rebalancing Calculator
Calculate buy/sell recommendations to bring your portfolio back to target allocation.
Risk Profile / Asset Allocation
Questions → risk score → allocation recommendation (stocks/bonds/cash) with ranges.
Taxes & Salary (DE)
Gross-Net Calculator
Estimate your net from gross: tax class, social contributions, childless surcharge (simplified model).
Capital Gains Tax Calculator
Capital gains tax + solidarity surcharge + church tax, incl. savings allowance.
ETF Tax Calculator
Partial exemption + sale/withdrawal + simplified advance lump sum (adjustable parameters).
Savings Allowance Calculator
Optimize exemption orders across multiple banks based on expected earnings.
Inflation Calculator
Purchasing power loss, value in X years, and real return – quickly calculated.
Real Estate
Real Estate Calculator
Financing + rough buy-vs-rent comparison.
Amortization Schedule Calculator
Monthly plan, remaining debt, interest costs – incl. annual special repayment.
Annuity Calculator
Rate ↔ loan amount ↔ duration – choose mode and calculate quickly.
Purchase Costs Calculator
Transfer tax by state + notary/land registry + broker (customizable).
Rental Yield / Cash Flow Calculator
Gross/net rental yield, financing, operating costs, cash flow.
Purchase Price Factor Calculator
Purchase price factor = purchase price / annual cold rent – including interpretation.
Loans & Everyday
Loan Calculator
Rate, duration, total interest, and amortization schedule for installment loans.
Overdraft Calculator
Interest costs on overdraft and comparison to installment loan (simple).
Leasing vs. Purchase Calculator (Car)
Compare total costs over the holding period: leasing vs. financing/purchase.
Energy Cost Comparison
Annual costs old vs. new based on base price + unit price + consumption.
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