Show HN: ObolusFinanz – Simple finance tools (German tax and investment)

💶 Tax calculation Germany

Gross net, income tax and spouse splitting – simply explained and calculated immediately.

📈 Savings plan simulation

Simulate returns, savings plans, dividends and taxes with real market data to plan your wealth creation rationally.

Obolus Finanz is a growing ecosystem of apps for taxes, investments, and wealth planning. Our tools help you understand your finances transparently and based on data.

You can currently use the gross-net calculator with tax forecast and the new savings plan simulator. Additional tools for household and wealth planning are in development.

No. All tools are available directly in your browser – free of charge and without registration.

Our platform combines tax and investment logic in one interactive simulation – realistic, transparent, and scientifically grounded.

🧮 gross net calculator

Calculate the deductions from your salary according to German tax law 2025, taking into account detailed setting options.

⚖️ spouse splitting & forecast of compensation

Calculate the common assessment in the app by you and your spouse including child allowance, income tax classes 4.5.6 and 4 with a factor

📊 portfolio strategies

Compare up to five investments in parallel - including risk, drawdown and performance KPIs.

💰 Financial planning

Create long-term scenarios with Monte Carlo forecasts, reinvestments and savings plan timing.