Flowly

Tax invoices

Thai tax invoices, done right

VAT-registered? Flowly issues full tax invoices with auto-numbering and Revenue Dept-compliant fields.

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What it does

Every required field

Name/address + tax ID + HQ/branch + line items + VAT 7% + subtotal/total + invoice # + date.

Auto-incrementing numbers

No duplicates. Clean PND filing.

Full + abbreviated formats

B2B (full) and retail (abbreviated) both supported.

e-Tax Invoice by Email-ready

Download PDF → forward to csemail@rd.go.th per Revenue Dept guidance.

How it works

  1. 1

    Set business: VAT 7% on + tax ID entered

  2. 2

    Issue invoice as usual — VAT + tax invoice auto-generated

  3. 3

    Download PDF → email to client

Frequently asked questions

Tax invoice vs invoice?

Invoice = payment request. Tax invoice = legal VAT record. VAT-registered businesses must issue tax invoices on every sale.

Can non-VAT businesses issue tax invoices?

No. Only VAT-registered businesses can. Non-VAT businesses issue receipts instead.

How long to keep copies?

5 years by law. Flowly stores them indefinitely — download anytime.

Ready to try it?

Free plan: 15 invoices/month, no watermark, no credit card.

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