Business System ProVAT return due soon — do you know how much VAT you owe?
Tax invoices, VAT return, WHT, 50 Tawi, receivables and P&L
For: Small VAT-registered companies and partnerships · Online shops and freelancers who issue tax invoices · Owners who want to see the books before sending them to the accountant
฿1,990
ExcelGoogle Sheets
Q&A with real numbers from the sample file
What are sales and profit this year?Sample data: revenue 6,463,040 baht, expenses 3,178,324 baht, pre-tax profit 3,284,716 baht (50.8%)
How much VAT is payable?Output VAT 452,413, input VAT 127,633, payable 324,780 baht, by month on the P.P.30 tab
How much do customers owe?Receivables 1,281,140 baht, 785,589 overdue, split into 1–30 / 31–60 / 61–90 / 90+ days
FAQ about this system
Does it work in Excel and Google Sheets?Both. Open it in Excel 2016 or later / Microsoft 365, or upload it to Google Drive and open it with Google Sheets
Do I need to be good at Excel?No. Fill in the white cells only; dark cells are formulas, and a 5-step guide is inside the file
Can I change the business name and address on the forms?Yes. Edit them once in Settings and every form updates
How do I clear the sample data?Delete only the white cells on the data tabs; formulas and forms stay in place
How much data can it hold?Up to 2,000 invoices and 3,000 sales lines, tested with full tables and no formula errors
Can I print or save the forms as PDF?Yes. Forms are set up for A4; pick the document number and print or save as PDF
What happens if I type the wrong kind of value?Number and date cells are validated and show a message, and formulas are guarded against error values
Is the tax invoice a proper full-form invoice?It is a full tax invoice with seller and buyer names, addresses, tax IDs and branch, number, date, items and separate VAT
Does it separate P.N.D.3 and P.N.D.53?Yes, by supplier type: individuals go to P.N.D.3 and companies to P.N.D.53, summarised monthly
Can I issue 50 Tawi certificates?Yes. Pick the expense number and the withholding certificate fills with the amount and rate
Can a non-VAT business use it?Yes. Switch "VAT registered" off in Settings and documents skip VAT