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What Will This Actually Cost Me?
Figure out the real monthly cost of running your product — including the stuff nobody warns you about. How many customers before this stops being an expensive hobby?
Your setup
Monthly costs
€/mo
€/yr
Annual cost \u2014 calculator divides by 12
€/mo
Stripe, email, analytics, etc.
€/mo
%
Stripe default: 2.9%
€
Stripe default: 0.30
Your time
hrs/wk
€/hr
Optional \u2014 for opportunity cost
Your pricing
€
What you plan to charge
Tax estimates are rough approximations for planning purposes only. They do not constitute tax advice. Actual tax liability depends on your full financial situation, deductions, and local regulations. Consult a Steuerberater (Germany) or CPA (United States) before making financial decisions.
Enter your price to see results
Go deeper
Want to pressure test the whole idea, not just the numbers?
Cat the Arbiter runs your startup idea through six phases of brutally honest validation. You get a verdict, specific weaknesses, and a plan to fix them.