Thai Monthly Tax Deadlines — PP.30, PND.1/3/53
Thailand has two main recurring monthly tax deadlines: PP.30 (VAT) by the 15th of the following month (online filing extends to around the 23rd), and PND.1/3/53 (withholding tax) by the 7th of the following month (online filing earns an extension). To avoid missing them, download the .ics calendar file from this page and import it into your own calendar app — it adds automatic monthly reminders with no email or push notifications needed. Always confirm the current dates with the Revenue Department (rd.go.th / hotline 1161) before filing, as deadlines can change.
These deadlines recur every month. The figures mirror our guides and can change — always confirm the current deadline with the Revenue Department (www.rd.go.th / hotline 1161) before filing.
Paper deadline by the 7th of the next month — online filing extends to ~the 15th
Paper deadline by the 15th of the next month — online filing extends to ~the 23rd
How freelancers use these deadlines in practice
Most freelancers and small shops have no accounting team to chase them, so they tend to fold these deadlines into their own routine like this:
- Every time you issue a tax invoice — log the VAT you collected (or let the app total it for you) so you can file PP.30 by the 15th of the following month.
- Every time a client withholds tax and gives you a 50 Bis — keep it as a credit for your annual return (P.N.D.90/91). If you are the one paying and withholding from someone else, remit it via P.N.D.1/3/53 by the 7th.
- At month-end — check for any invoice or 50 Bis that hasn't been logged yet, before next month's filing window opens.
BillsOS removes some of the manual logging — every tax invoice and 50 Bis you issue is automatically totalled for VAT and withholding. See the full set of documents a freelancer should issue in our freelancer documents guide and how to file P.N.D.3/53 in our P.N.D.3 / P.N.D.53 filing guide.
Add to your own calendar
Download the .ics calendar file and import it into your calendar app for automatic monthly reminders — we never email or push reminders for you.
Download reminder calendar (.ics)Frequently asked questions
What is the PP.30 (VAT) deadline?
By the 15th of the following month. Filing online earns an extension, typically to around the 23rd. Confirm the current deadline with the Revenue Department.
When must I remit withholding tax (PND.1 / 3 / 53)?
Within 7 days of the end of the month in which payment was made (i.e. by the 7th of the following month). Online filing earns an extension. Confirm the current deadline with the Revenue Department.
How can I get a reminder for these deadlines?
Download the calendar file (.ics) on this page and import it into your own calendar app — it adds recurring monthly reminders there. (BillsOS does not email or push reminders for you.)
Do freelancers who are not VAT-registered need to worry about PP.30?
If your income has not yet reached the VAT-registration threshold (generally ฿1.8 million/year) and you have not registered for VAT, you do not need to file PP.30 yet — but you should track your cumulative sales, since you must register once you cross the threshold, within the legally required timeframe. PND.1/3/53 (withholding) is a separate matter from VAT and can apply to a freelancer even before VAT registration.
Let BillsOS total your tax figures
Issue tax invoices that calculate VAT and withholding automatically, with monthly totals to help you file. (The filing itself is still done in the RD e-Filing system.)
Start free →Reviewed 2026-06-08. This page is general information, not specific tax advice. Deadlines may change — verify with the Revenue Department or your accountant before relying on this.