Your Data Stays
In Your Browser
Client-side calculations mean zero server-side data storage. Not one byte of your financial information leaves your device.
The 30-Second Version
Everything you need to know at a glance
What We DON'T Do
- Store your tax calculations on servers
- Sell, share, or monetize your data
- Track you across other websites
- Require account creation or login
- Use third-party advertising networks
- Employ dark patterns or deceptive practices
What We DO
- Calculate everything in your browser
- Use privacy-focused analytics (Umami)
- Respect Do Not Track settings
- Provide complete transparency
- Keep the site forever free
- Maintain open-source code
How We Protect Your Privacy
Four architectural decisions that make your data truly private
Client-Side Calculations
All tax calculations run in your browser using JavaScript. Your salary, tax code, and personal details never leave your device.
Zero Server Storage
We don't store your tax data on our servers. Calculations happen locally, results display instantly, nothing gets saved remotely.
Optional Analytics
Anonymous usage data (page views, device type) only with your consent. You can decline entirely - the calculator works exactly the same.
Privacy by Design
Your privacy isn't a feature we added - it's built into the architecture. We literally cannot see your tax calculations.
Where Your Tax Data Goes
Spoiler: Nowhere. Here's the technical breakdown.
Your Device
All calculations happen here in your browser. Your salary, tax code, and personal details never leave this device.
Our Servers
Only serve the website code (HTML, CSS, JS). No tax data, no personal information, no calculation results stored.
Analytics (Optional)
Privacy-focused Umami analytics tracks anonymous page views only if you consent. No personal data, no cross-site tracking.
What We Track (With Your Permission)
Anonymous analytics that respect your privacy
Privacy-Focused Analytics
We use Umami Analytics - a privacy-focused, GDPR-compliant alternative to Google Analytics. No cookies, no cross-site tracking, no personal data collection.
What We Track
Page views, referral sources, device types (mobile/desktop), and country-level location. Nothing personally identifiable. No IP addresses stored.
Your Control
You can decline analytics entirely via our cookie banner. The calculator works exactly the same. We also respect Do Not Track browser settings.