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Craftkite

Shops

VAT Calc (Ruby)

Tax maths for shops and invoices: add or extract VAT in minor units, look up EU standard and reduced rates, and total invoice lines with one VAT line per rate.

Web appStandard
Use this template

Free to sign up. You approve the plan before anything is built.

A working demo with sample data: add, edit and filter. Your changes stay in your browser.

How it works

  1. VAT Calc (Ruby): the VAT Calc screen

    Step 1 · VAT Calc

    Net to gross and back

  2. VAT Calc (Ruby): the Reference screen

    Step 2 · Reference

    EU standard and reduced rates

  3. VAT Calc (Ruby): the Quality screen

    Step 3 · Quality

    Invoice totals grouped by rate

Start in three steps

  1. Step 1

    Start from this template

    Sign up free and open the template in the studio. Change the description to fit your idea if you like.

  2. Step 2

    Approve the plan

    The agent shows you what it will build: screens, data and features. Nothing is built until you agree.

  3. Step 3

    Test and publish

    The app is built, tested in a real browser and ready to publish on your own address.

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