DocMason is designed around how UK small businesses work: UK VAT rates, sort codes and account numbers, prices in pounds, and dates written day first.
That said, the pieces are there if you trade elsewhere. Set your currency to GBP, EUR or USD in Settings. Payment details accept IBAN and BIC or a US routing number as well as UK sort codes. Dates can print UK-style or US-style on every document. The AI creator writes in UK English.
If your country's tax rules need something the VAT rates here do not cover, tell us through the contact page - it helps decide what gets built next.