Can the book issue legally valid Thai tax invoices?
Yes, for VAT-registered companies. Before issuing, every tax invoice is checked for the items in section 86/4 of the Revenue Code: the words tax invoice, seller name, address and tax ID, head office or branch, buyer name and address, a running number, the goods or services, VAT shown separately and the date. Tax invoices always print in Thai. For a company that is not VAT-registered the tax invoice is hidden, because issuing one is prohibited. The PDF is a paper document, not an e-Tax Invoice: print the original for the customer, and ask your accountant when unsure.
Where is the data kept? Is it uploaded?
Free use keeps the book and attached images in your browser; PDFs are created on your device. With Pro, you can choose cloud sync after reading the notice and agreeing. Book data and images are encrypted on your device before upload. For GPS check-ins, employees use their personal link, press Check in or Check out, and allow location access; the phone encrypts the location and attendance entry before sending it for the employer to read. Clearing browser data or losing a device can lose records that have not been backed up or synced. Download .itlbook backups regularly; password protection is optional.
Why can I not edit or delete an issued document?
Tax invoice numbers must run without gaps and documents must be kept for at least five years, so an issued document is locked. To correct one, void it (the number stays and VOID is printed) and issue a replacement, or issue a credit or debit note that refers to the original tax invoice with a lawful reason. Drafts can be edited and deleted freely.
What is free?
Every document type, automatic running numbers, voiding, credit notes, backup files and Excel export are free, with 30 issued documents a month, one company, 100 customers, 100 products and two colour themes. iToolers Pro makes documents unlimited, allows three companies and all six themes. You can also choose encrypted cloud sync with Pro. Backup and export stay free even after a pass ends.
How is this different from the original quotation maker?
The original tool makes one document at a time and stores nothing; it stays free as before. The book remembers every document, numbers each type per branch and year without gaps, converts a quotation into an invoice, tax invoice and receipt following the tax point (goods on delivery, services on payment), tracks what customers owe and links to the 50 tawi, PromptPay QR and shipping label tools.
Can I record expenses, issue the 50 tawi and make tax reports?
Yes. Record the bills and tax invoices you receive, with a photo attached to the book. When you withhold tax, one button opens the 50 tawi tool on the Revenue Department form with the payer, payee, amount and tax filled in. The reports page makes the sales tax report, the purchase tax report, the PND3/53 withholding summary and receivables by age, as PDF or Excel. The overview shows revenue, expenses and the estimated VAT due, and warns a company that is not VAT-registered when 12-month revenue nears 1.8 million baht. The book prepares the numbers; you or your accountant still file the returns.
