A Tool for Self-Employed Entrepreneurs

I recently built a tax calculator app that makes calculating taxes quick and simple. I used React 19, Tailwind v4, and shadcn/ui to create a smooth experience without overcomplicating the tech details.

Here is a link to the web app: SP Kalkulator

What It Does

• Multiple Currencies: You can choose from currencies like BAM, USD, CHF, GBP, and RSD.
• Instant Calculations: The calculations are done on the fly—no need to click a submit button.
• Local Storage: Your selected currency, input value, and theme are saved locally, so you always see your settings when you come back.
• Live Exchange Rates: Every time you load the page, the app fetches the latest currency exchange rates from a public API.

Future Plans

I plan to add a chart that will show how much tax you pay versus how much you earn. This will help you get a clearer picture of your financial situation.

A Note on Limitations

Right now, the app is perfect for everyday tax calculations. However, it’s not fully ready for “big tax payer” scenarios—if you are dealing with amounts over 100k BAM, you might need a more robust solution.

I’m excited about the progress so far and look forward to improving the app even more!