adulting-invoicing-app-demo

UK self-employed (sole trader) tax rules for this invoicing app - income tax bands, personal allowance taper, Class 2/4 NIC, cash basis, payments on account, more than one trade, trading allowance, Making Tax Digital, invoice content. Use before changing anything under src/utils/taxCalculator.ts, the Dashboard or Accounting pages, expense handling, or PDF invoice content, and when writing or reviewing tax tests.