Bookkeeping
Daily and weekly journal entries, bank and credit card reconciliations, and a clean general ledger you can trust.
Thai accounting and tax move in the same rhythm – entries, close, VAT, withholding, corporate income tax. We run them together so your books are audit-ready and the Revenue Department never has to chase you.

When your books and your tax filings live in the same operation, period close becomes a checkpoint instead of a fire drill.
Books
Tax
P&L, balance sheet, and cash position – current to the most recent closed period, not a quarter behind.
Profit & loss
YTD net income
Six disciplines, one team. From the first journal entry to the last tax submission, every part of your financial cycle is covered.
Daily and weekly journal entries, bank and credit card reconciliations, and a clean general ledger you can trust.
Accruals, prepayments, depreciation, FX revaluation, and balance sheet review – finished on a predictable schedule.
P&L, balance sheet, and cash flow delivered monthly with management commentary. Annual statements ready for audit.
Monthly VAT computation, input tax matching, supplier invoice review, and PP.30 submission via Revenue Department e-Filing.
PND.50 annual return and PND.51 mid-year filing prepared from your financials, with deductible reviews and BOI considerations.
PND.3 and PND.53 prepared from supplier transactions every month, with WHT certificates issued to vendors on request.
The Revenue Department's deadlines repeat every month and every year. This is the summary Settlr tracks against for every client, with e-filing extensions where they apply.
| Form | Frequency | Due date | Covers |
|---|---|---|---|
| PND.1 | Monthly | 7th (15th if e-filed) | Withholding tax on employment income |
| PND.3 / PND.53 | Monthly | 7th (15th if e-filed) | Withholding tax on payments to individuals and companies |
| PP.30 | Monthly | 15th (23rd if e-filed) | VAT return on sales and purchases |
| Social security | Monthly | 15th | Employee and employer SSO contributions |
| PND.51 | Annual (half-year) | Within 2 months of half-year end | Mid-year corporate income tax estimate and payment |
| PND.50 | Annual | Within 150 days of fiscal year end | Annual corporate income tax return |
| Kor Tor 11 | Annual | End of February | Annual summary of employee salaries and withholding |
| Audited financial statements | Annual | Within 5 months of fiscal year end | Filed with the DBD following the AGM |
Deadlines shift when they fall on a weekend or public holiday. Settlr's platform tracks the exact date for your fiscal year and files ahead of the deadline, not on it.
Most SMEs switch accountants mid fiscal year, worried about losing continuity. Here is exactly how the handover works so no filing is ever missed in the transition.
You grant read access to your current bookkeeping file (or export it) plus the last 12 months of filed PND and PP.30 returns, bank statements, and the latest audited financials.
Our team rebuilds the trial balance from your existing records and reconciles it against bank statements and prior filings before touching anything new.
We verify there are no outstanding filings, penalties, or open queries on your tax ID before assuming responsibility for the next filing cycle.
Whichever filing is next due — PND.1, PP.30, or PND.50 — it goes onto the Settlr platform calendar immediately, with the current provider's numbers as the baseline.
We coordinate a clean handover date with your outgoing accountant so there is no double-filing, no missed month, and no ambiguity about who owned which filing.
Typical handover takes 1 to 2 weeks and can start at any point in your fiscal year.
How we keep your accounting and tax operation steady – so audits, board meetings, and Revenue Department reviews are non-events.
Every entry traced to a source document. When the auditors arrive, the package is already prepared and the supporting files are linked, not scattered.
Books are closed within five business days of period end. You see this month's revenue and margin while it still matters, not after the next quarter is half over.
Every PP.30, PND.50, PND.51, PND.3, and PND.53 tracked against statutory due dates. Penalties and surcharges never land on your desk.
Questions
The standard corporate income tax rate is 20 percent of net profit. Qualifying SMEs pay 0 percent on the first 300,000 THB, 15 percent up to 3 million THB, and 20 percent above that. BOI promoted companies can receive corporate income tax holidays of up to 13 years depending on activity.
VAT registration is mandatory once annual revenue exceeds 1.8 million THB. The standard VAT rate is 7 percent, and registered companies file the PP.30 return monthly by the 15th of the following month (23rd if e filed). Settlr handles registration and every monthly filing.
Join finance teams who trust Settlr for bookkeeping, month-end close, VAT, corporate income tax, and withholding tax – all in one operation.