EuroGrossPay

Transparent net salary calculator for Europe — instantly estimate your real take-home pay from gross, with demo tax rates and a simple visual breakdown.

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Inspiration

Across Europe, people often struggle to understand how much of their gross salary turns into net take-home pay after taxes and deductions. Most calculators are opaque, country-specific, or hide the breakdown.
We wanted to make salary transparency simple, educational, and visually clear showing people where their money really goes.

What it does

EuroPay – Transparent Net Salary Calculator lets users instantly estimate their net income from a gross salary in different European countries.
It uses demo tax and social-security rates to show:

  • Gross vs. net comparison
  • Deductions breakdown
  • Country-to-country visualization
    All calculations run fully offline and client-side, ensuring privacy.

How we built it

We built a lightweight Progressive Web App (PWA) using:

  • HTML, CSS, JavaScript for a fast, offline-ready frontend
  • Chart.js for visual comparisons
  • Service Worker + Manifest for offline caching
  • A simple modular structure (no backend servers)

Challenges we ran into

  • Modeling simplified tax rules across multiple countries
  • Balancing accuracy with simplicity (demo rates vs. real data)
  • Ensuring the PWA works smoothly offline
  • Designing clear UX for complex financial data

Accomplishments that we're proud of

  • Created a functional, visually clean salary calculator that runs 100% locally
  • Built transparent tax visualization tools for education and awareness
  • Completed a full offline-first PWA during the hackathon timeframe

What we learned

  • How to design with transparency and usability in mind
  • How to implement progressive web features effectively
  • The importance of simplifying data so anyone can understand real-world finance

What's next for EuroPay – Smart Calculator for Net Salary

  • Integrate real tax APIs or official datasets for country-specific accuracy
  • Add currency conversion and cost-of-living insights
  • Extend to freelancer and contractor pay models
  • Publish as a mobile app for iOS/Android with localization
  • Explore partnerships for financial-literacy education across Europe

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