Monthly accounting and tax for small Thai companies, filed on time and traceable

The base set: sales tax invoices, purchase receipts and tax invoices, invoices issued and received, bank statements for every company account, payroll and social-security submissions, and evidence of payments with withholding tax. If you hold stock, send month-end balances. One folder per month with readable filenames cuts review time and errors substantially.

A company must withhold tax on certain payments — services, contract work, rent, advertising, transport and professional fees. Rates differ by income type and whether the payee is an individual or a company, so each item is checked on its own. After withholding you issue a withholding certificate to the payee and remit to the Revenue Department by next month's deadline. We verify rates against the current notifications every time rather than from memory.

Expenses without documents naming the seller and the items, directors' personal spending unrelated to the business, payments with no verifiable proof, and figures dressed up to fit a total. In practice, fuel, entertainment and large cash payments draw the most scrutiny. The safe habit is paying from the company account, always asking for documents in the company's name, and keeping personal and company accounts separate from day one.

Monthly: withholding tax returns, VAT returns if registered, and social-security remittances. Half-year: the mid-year corporate income tax return based on estimated profit. Annually: the close, the audit, the corporate income tax return and submission of the financial statements to the Department of Business Development. Each has its own due date, so we build a month-by-month calendar for your company and remind you ahead of every deadline.

If the estimate understates actual profit beyond the statutory allowance, a surcharge can apply. The right approach is estimating from real first-half figures plus the second-half plan, not guesswork. We prepare the calculation, explain the assumptions and keep the supporting documents in case of questions.

In a tax-loss year there is no corporate income tax on profit, but the duties to file, close the books and be audited remain. A tax loss can be set against later years' profit within the conditions and period the law allows. What matters is that the loss comes from properly kept books with complete documents, not from unprovable expenses, which get adjusted on audit.

Salary is a company expense and income to the recipient, subject to withholding and to personal income tax. Dividends are paid from profit after corporate tax, so they are not a company expense, and the recipient has options for how they are taxed subject to conditions. The right mix depends on profit, personal income level and cash-flow plans. We model the comparison on your real numbers before you decide, and we never recommend a structure that misrepresents the actual work performed.

We assemble the documents the notice asks for, write explanations of the items in question, reconcile the statement figures to source documents, and attend to explain alongside your authorised person. Common issues are expenses with incomplete documents, unexplained cash balances, and input VAT credited on the wrong category. We do not guarantee an audit outcome, and we do not create back-dated documents that do not match the facts.

We work on standard accounting software widely used in Thailand, chosen to fit your business and transaction volume. The books are your company's: at the end of a term or on a change of accountant we hand over ledger files, trial balance, fixed-asset register and filed returns in full. Access to the tax-filing portals and bank systems should always sit with your directors, never solely with the accountant.

Register as an employer with the Social Security Office and enrol the employee, prepare the employment contract and staff register, run payroll with withholding tax and social-security contributions, remit monthly by the deadline, and issue withholding certificates to staff. At year end there is an annual summary of employee income. We set this up from the very first hire, because fixing it retroactively is harder and carries fines.

The principles are the same, but income arrives through several channels and platform fees are deducted before payout, so each platform's sales report must be reconciled to the money actually received every month. Fees, advertising and shipping are recorded as expenses with documents. Total receipts across all channels count towards the VAT threshold, and taking payment into the owner's personal account makes reconciliation hard and invites questions — keep a clear company account.

No. A registered company must close its books and file every year even with no transactions, and fines accumulate. Proper closure means registering the dissolution, liquidating, closing the books at the dissolution date, having them audited, filing all returns, cancelling VAT and social security where applicable, then registering completion of the liquidation. If several years are outstanding, those must be brought up to date first. We assess the steps and the order before starting.

Yes. The law requires books, a close, an audit and a submission even in a year with no income. The cost is lower than for a trading year but not zero, and starting in month one is far cheaper than reconstructing later.

Per case, because the work varies with monthly transaction count, VAT status, headcount, number of bank accounts and any back-year catch-up. We review a sample month first, then quote scope and price in writing.

Yes. The back years must be rebuilt in order, audited and filed with the statutory fines. We first assess how many years, which documents are needed and which year to tackle first to reduce risk — and we say plainly that the fines cannot be avoided.

Yes. Most clients send files on the agreed cycle and talk by phone or LINE. We work from our Bangkok and Khon Kaen offices and serve every province; the originals you must retain stay with your company unless agreed otherwise.

Above 1.8 million baht of combined income a year, you must register within 30 days of crossing the threshold. Below it, registration is optional and worth modelling, since it brings input VAT benefits and a monthly filing burden. We run both scenarios on your figures.

Yes, and it is common. From the previous accountant you need the ledger files, trial balance, fixed-asset register, filed returns and supporting documents. We check completeness before taking over and tell you what must be fixed before this year's close.

We coordinate with a licensed auditor, who must remain independent of the bookkeeping under professional standards. We prepare the documents and answer their requests so the audit does not drag on.

Within the law: salary and dividend structuring, properly documented expenses, revenue recognition matching the facts, and VAT registration decisions based on the numbers. We do not take work that involves documents which do not match reality.