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SUWANVARA LAWFIRM
Suwanvara Law Firm Co., Ltd.
SUWANVARA LAWFIRM
SUWANVARA LAWFIRM
Suwanvara Law Firm Co., Ltd.
Accounting & tax

Accounting Chonburi

Accounting for factories and suppliers in industrial estates

Accounting for factories and suppliers in industrial estates

Chonburi is a manufacturing hub where most businesses sit in the production chain: factories in industrial estates, component makers supplying big plants, subcontractors, and companies with overseas parent firms. Their accounting has challenges retail doesn't: production costs built from raw materials, labor, and factory overhead; multiple inventory categories at once; and tax rules tied to the incentives they receive. We handle accounting for factories and suppliers in Chonburi by getting the cost structure right from the start, because if that framework is wrong, the full-year profit will be off with no warning.

What we handle

Monthly bookkeeping, transaction recording, and trial balance preparation
File withholding tax (ภ.ง.ด.1/3/53) and value-added tax (ภ.พ.30)
Close annual financial statements, file ภ.ง.ด.50/51, and submit to the Department of Business Development
Prepare payroll, payslips, and remit social security contributions
Take over from previous accountant, and perform a retroactive account review before accepting the engagement

BOI businesses must separate accounts into two parts

When a business receives BOI promotion, the incentives apply only to the promoted business, not the whole company. If a company has both promoted and non-promoted activities, it must keep income, costs, and expenses for each part visibly separate throughout the year — not allocate them retroactively when closing the books. This is one of the most scrutinized points. We design the chart of accounts and the allocation method at the start of the year, with documentation to back the approach.

Imported raw materials: cost goes beyond the price tag

Imported raw material costs include several items that arrive at different times: the invoice price, freight, insurance, import duty, and port expenses. Because the paperwork doesn't all come in together, many businesses book only the invoice price and plan to adjust later — but often don't. That leaves inventory cost too low and profit overstated during the year. So we set a cut-off to have the full import package before closing each month.

Talk to us about your accounts

Tell us what the business does and what state the books are in. We will say what to start with and what needs fixing for prior periods.

FAQ — Accounting Chonburi

2 questions answered

Yes, and they should be handled together. Wages, social contributions, and employment records need to match. With our accounting team and lawyers in the same office, any mismatch between employment paperwork and actual payments is flagged and corrected at the time of recording.
Yes. We prepare monthly reporting packages in the format your parent company requires, in parallel with the financial statements prepared under Thai standards, using the same data so the two sets of numbers are fully reconcilable.