Germany Income Tax Calculator MCP Connector for Claude

This MCP server provides a precise computation engine for determining German income tax liabilities. Using the calculate_tax_breakdown tool, you can input your annual gross salary to receive a detailed breakdown of progressive income tax, solidarity surcharge (Soli), and church tax based on your federal state. Additionally, it accounts for mandatory social security contributions--including health, pension, unemployment, and long-term care insurance--while respecting the statutory contribution assessment ceilings. You can also use get_social_security_rates to check current employee contribution percentages or list_church_tax_regions to identify which German states apply an 8% vs 9% church tax rate.