VATTool
Accountants utilize this VAT Calculation Website to verify tax amounts, extract VAT from gross totals, and ensure the accuracy of invoices. By inputting net or gross amounts, the calculator provides accurate VAT breakdowns appropriate for accounting and reporting purposes.
https://vatcalc.onl/what-is-input-and-output-vat/
https://hackmd.io/@vattool/S1lcng-X-e
https://www.bandlab.com/user9016278593328447
https://stocktwits.com/vat_tool