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Dev.to
7/2/2026
I built a 163-page paycheck calculator that costs $0 a month to run

I built a 163-page paycheck calculator that costs $0 a month to run

Short summary

A developer built PayBrackets, a free paycheck calculator covering all 50 US states plus DC with zero backend costs by encoding tax rules in TypeScript and generating 163 static pages at build time. The privacy-first design keeps salary data in the browser, and pages are optimized for AI crawler citation. Even the marketing video renders from React components using the same tax engine.

  • •Built a 163-page static paycheck calculator with $0 monthly running costs
  • •Encoded all US tax rules in TypeScript once, generated all pages at build time
  • •Privacy-first: salary data never leaves the browser, optimized for AI assistant citations

Generated with AI, which can make mistakes.

#ai-tools#product-launch
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