Financial calculators, analysis, and integrations

Direct access to individual Obolus calculators and technical interfaces.

OBOLUS TOOL HUB

All Obolus tools in one place

Calculators and analysis for net pay, tax, housing costs, budget, investing, and public finance.

Salary & tax

Gross-to-net calculator

Calculate take-home pay from gross salary for Germany and other countries.

Calculate net pay

Country tax comparison

Compare how much of the same gross salary remains as net pay across countries.

Compare countries

Joint filing simulation

Simulate how reforms to Germany's joint income-tax filing rules could change tax outcomes.

Open simulation

Relocation & living costs

Relocation Finance Flow

Check an offer, housing costs, disposable income, and savings rate in one guided flow.

Start flow

Cost of Living

Compare what remains after net pay, rent, living costs, and purchasing power across countries.

Compare costs

Rent vs Income

Test how strongly rent or a mortgage weighs on net income.

Check housing

Budget & wealth

Budget planner

Turn take-home pay into spending, free cash, and savings potential.

Build budget

Finance Cockpit

Save scenarios, budgets, and long-term planning in one place.

Open cockpit

Investment simulation

Simulate what a monthly savings rate could become over time.

Simulate savings

Data & public finance

Federal budget visualization

Explore German federal revenue and spending interactively.

View federal budget

Obolus Blog

Read analysis on tax, income, deductions, public budgets, and personal finance planning.

Read blog

Developer & integrations

Technical interfaces for developers, agents, and custom workflows.

Obolus API

Use tax and salary comparisons through a public API.

View API

OpenAPI & MCP

Integrate Obolus into agents, workflows, and your own apps.

Open developer docs

ChatGPT App

Compare international take-home pay directly in ChatGPT.

View app

What to watch before calculating

Quick orientation points for choosing the right individual tool.

A higher gross salary does not automatically create more disposable income after tax and housing.

Housing is often the biggest lever for monthly affordability in relocation scenarios.

Tax, private health costs, and living costs should always be considered together.