Keep the books in order
We record your sales and expenses, check the supporting documents and reconcile your bank accounts.
Includes your general ledger, trial balance and supporting schedules.
For Thai & foreign-owned businesses
Accounting & tax services in Thailand
We handle your bookkeeping and tax filings, and explain what the numbers mean for your business. Cloud accounting software is included, with support in English, Chinese, Burmese and Russian.
Supporting businesses operating in Thailand since 2019. Licensed Accounting Firm.
What does an accounting service in Thailand cover?
Monthly accounting keeps your sales, expenses and bank records in order, with financial reports and tax filings for your business. Payroll, annual accounts and audit work can be added to your package.
Our accounting services
Your books, tax filings and monthly reports
Tell us how your business works. We’ll recommend a package, explain what it covers and quote separately for any additional work.
Monthly tax filing
Bookkeeping Essential includes P.N.D.53 and P.P.30 where applicable. Need payroll, other withholding tax or overseas payment returns? We’ll include them in your quotation.
Tax payable is separate from professional service fees.
Understand your numbers
See how your business is performing, what customers owe you and what you owe suppliers. We can also quote for reports by division, product or sales channel.
We’ll agree when you’ll receive your reports before we start.
Payroll & Social Security
Need help paying your team? We can add salary calculations, payroll tax returns and Social Security support, with fees based on the work required.
Explore payroll services →Year-end accounts & audit
We help prepare your financial statements and corporate tax returns, coordinate the independent audit and arrange DBD submission. Your quotation lists the fees for each.
Annual work is not automatically included in monthly bookkeeping.
BOI & overseas transactions
Running a BOI company or paying suppliers overseas? We’ll review separate BOI records, cost allocation and any extra reporting your company needs.
BOI & export company accounting →Transparent starting fees
Accounting fees that follow your workload
Bookkeeping Essential is billed monthly. The published tiers below are subject to 7% VAT. Your quotation confirms how transactions are counted and how additional work is charged.
Bookkeeping Essential
| Monthly transactions | Fee before VAT |
|---|---|
| Fewer than 5 | THB3,500 |
| 5–14 | THB5,500 |
| 15–49 | THB8,500 |
| 50–119 | THB16,500 |
| 120–249 | THB29,500 |
| 250 or more | Request a quotation |
Each range applies the corresponding published “less than” tier. For transaction counting, volume changes or high-volume daily sales, request a written assessment.
Confirm my monthly feeIncluded in Bookkeeping Essential
- Document collection, verification, matching and data entry
- Bank reconciliation and monthly financial reports
- General ledger, trial balance and debtor / creditor ageing
- P.N.D.53 withholding tax and P.P.30 VAT filing, where applicable
- Up to 5 withholding tax certificates per month
- Supported cloud accounting subscription, onboarding and cloud document storage
- Dedicated account coordination
Published adjustments: non-VAT-registered companies receive a 12% reduction from the published fee. More than 5 foreign transactions per month attracts a 15% surcharge. Confirm the final calculation in your quotation.
Quote separately: dormant companies, BOI accounting, high-volume F&B or retail, payroll, additional return types, historical corrections and year-end work.
BOI accounting requires a tailored scope
Promoted and non-promoted activity, project conditions and reporting complexity affect the work. Request a written BOI quotation covering the monthly fees and any annual or specialist filings.
Discuss BOI accountingSelected one-off & annual service fees
These are separate service items. Check whether your engagement already includes a particular task. Confirm VAT treatment and any third-party charges in the quotation.
| Service | Published fee |
|---|---|
| Half-year corporate income tax submission — P.N.D.51 | THB7,000 per submission |
| Annual corporate income tax return — P.N.D.50 preparation, review & filing | From THB39,500 |
| Additional withholding tax certificate | THB300 each |
| Company Social Security registration | THB8,000 |
| Employee Social Security enrolment | THB2,500 per person |
| Employee Social Security unenrolment | THB2,000 per employee |
| Annual Workmen’s Compensation filing — K.T.20 | THB3,000 |
| Personal income tax calculation & filing support | THB7,500 per person; confirm applicable returns |
| Tax residence certificate support for a foreign individual | THB6,500 per issuance |
| Corporate tax certificate support — R.O.21 tax payment / R.O.22 residence | THB8,500 per issuance; confirm certificate required |
Government tax liabilities, penalties, historical corrections and specialist advice require separate assessment. Annual audit and DBD filing arrangements must be expressly confirmed. BOI services are quoted individually.
Practical support for business owners
An accounting team you can talk to
Answers in your language
Ask questions about your accounts and get an explanation you can follow. Our team offers support in English, Thai, Chinese, Burmese and Russian.
Access to your financial records
Check your recorded transactions and documents online, without waiting for an email. You remain in charge of payments and approvals.
Support beyond the ledger
We can also help with payroll and corporate secretarial services when you hire staff or change your directors, shareholders or company address.
Cloud accounting software, included
Your package includes a cloud accounting subscription and help getting started. We work with PEAK, FlowAccount and SMEMove. Already using another system or need a POS or e-commerce connection? Tell us, and we’ll check compatibility and any setup costs.
Reports are finalised after we receive and check your documents, according to your monthly reporting schedule.
Thailand accounting & tax essentials
Which tax filings does your company need?
Your tax returns depend on whether you’re VAT-registered, employ staff or make overseas payments. Here are the main filings we’ll review with you.
| Return / obligation | What it relates to | When relevant |
|---|---|---|
| P.P.30 | Monthly VAT return | VAT-registered businesses, including months with no sales. |
| P.N.D.3 / P.N.D.53 | Withholding tax on relevant domestic payments | Certain domestic payments, depending on who you pay and what you pay for. |
| P.N.D.1 & SSO | Payroll withholding and Social Security obligations | Businesses with employees, depending on payroll and registration requirements. |
| P.P.36 / P.N.D.54 | VAT remittance / withholding on relevant cross-border transactions | Certain overseas payments; treatment depends on the transaction and applicable tax rules. |
| P.N.D.51 | Half-year corporate income tax | Generally within 2 months after the first 6 months of the accounting period; exceptions may apply. |
| P.N.D.50 | Annual corporate income tax | Generally within 150 days after the accounting period ends. |
| Annual financial statements & audit | Year-end reporting and DBD submission | Thai limited companies generally retain annual obligations even when inactive. |
Approaching THB1.8 million turnover?
For VAT-taxable activities, registration is generally required within 30 days after annual turnover exceeds THB1.8 million. This is a revenue threshold, not a profit threshold. Exempt activities need separate review.
Revenue Department: VAT guidance ↗Keep the records current
Missing invoices and bank discrepancies are easier to resolve while the details are fresh. Keeping your books up to date also makes half-year tax, annual accounts and audit preparation easier.
Revenue Department: corporate income tax ↗General information, not a company-specific filing calendar. Electronic filing extensions, public holidays, special rules and your accounting period can affect due dates. Confirm current deadlines before filing.
Starting fresh or changing provider
Changing accountants? We’ll help with the handover.
You don’t have to wait until year-end to change accountants. We’ll check what’s been filed, what still needs attention and when we can take over.
Tell us where things stand
Tell us about your business, monthly transactions and staff. Let us know about any overdue returns or missing records.
Review your quotation
We’ll set out the monthly work, fees, year-end services and any handover costs, along with a schedule for sending documents.
Hand over the records
We’ll review the transferred records, check opening balances and work through any gaps before taking over the monthly accounts.
Accountant handover checklist
Ask your current accountant for the trial balance, general ledger, bank reconciliations, tax returns and filing receipts. We’ll also need sales and purchase records, previous audited accounts, asset schedules and access to your accounting system.
Ask about our switch-over offer. We’ll confirm eligibility and quote for any historical corrections or data migration.
Who we work with
Accounting that fits how you do business
Startups & small companies
Get a simple routine for sending documents, help with your tax filings and a fee based on your business activity.
Foreign-owned & service businesses
Keep your Thai accounts in order and get reports you can use, with help reviewing overseas payments and supporting documents.
E-commerce, retail & F&B
Bring together sales, payment fees, refunds and inventory records. We’ll review your sales channels and POS data before quoting.
Not sure which package to choose?
Tell us what you do and roughly how many transactions you have each month. We’ll explain the options and costs.
Request a free 30-minute consultationClient testimonials
What our clients say
Feedback from our accounting, tax filing and audit clients.
Systematic and on-time
“Been 1.5 years with you guys and I am thankful to have chosen you guys to handle our company accounting and tax filing here in Thailand”
Clear communication
“Marlar particularly was very professional and patience. We appreciate her careful approach to every entries in our financial books.”
A smoother accountant handover
“Your team really tried your best in assisting us with our tax issues and attend revenue department tax query confidently. From that moment, i trust you guys know what you are doing.”
Accounting advice when we need it
“We can also view and access our financial report from your cloud accounting system and that helps our business alot. Your team delivery and commitment in Thailand. Keep it up”
BOI accounting handled well
“Your senior Accountant, May was knowledgable to handle our BOI company accounting and reporting. No penalty, no late for over a year now. Very good and keep it up please.”
Your questions, answered
Accounting in Thailand: frequently asked questions
How much do accounting services cost in Thailand?
Bookkeeping Essential starts at THB3,500 per month for fewer than five transactions, plus 7% VAT. Your fee depends on transaction volume and complexity. We’ll list any payroll, year-end, audit or additional filing fees in your quotation.
What is included in the monthly bookkeeping package?
It includes document checks, bookkeeping, bank reconciliation, monthly financial reports, a general ledger, trial balance, debtor and creditor ageing, cloud software and onboarding. P.N.D.53 and P.P.30 filing are included where applicable, along with up to five withholding tax certificates per month. Other services are quoted separately.
Can foreign-owned companies use UnionSPACE for Thai accounting?
Yes. We work with Thai and foreign-owned businesses in Thailand. Our English-speaking team explains your accounts and filing requirements, and reviews any overseas transactions or extra reporting you need before quoting.
When must a business register for VAT in Thailand?
For VAT-taxable goods or services, registration is generally required within 30 days after annual turnover exceeds THB1.8 million. That’s revenue, rather than profit. Some activities are exempt, so we’ll check what applies to your business.
Does a VAT-registered company need to file P.P.30 when it has no sales?
Yes. VAT-registered businesses generally need to file P.P.30 each month, even with no sales or VAT to pay. A quiet month does not end your VAT registration.
Does an inactive Thai limited company still need accounting and an audit?
Yes, generally. An inactive Thai limited company still needs accounting records, annual financial statements, an audit and an annual corporate tax return. Monthly filings depend on its tax registrations and transactions. Ask us for a dormant-company quotation.
Are annual audit fees included in monthly bookkeeping?
Annual work is quoted separately unless your package expressly includes it. Your quotation will show the charges for financial statements, P.N.D.50, the independent audit and DBD submission.
Can I switch accountants during the financial year?
Yes. We’ll check the last completed accounts and tax filings, then arrange the transfer of records and software access. If anything is missing or needs correcting, we’ll explain the work and cost before proceeding.
Which accounting software is included?
A cloud accounting subscription and onboarding are included. We work with PEAK, FlowAccount and SMEMove, depending on your package and needs. If you already use another system, we’ll review it and quote for any migration or extra licences.
Can you handle payroll, SSO and overseas payments?
Yes. We can add payroll and Social Security support. Overseas payments may also need P.N.D.54 or P.P.36 filings, depending on the transaction. We’ll review these with you and include the required work in your quotation.
What documents do you need to prepare an accounting quotation?
Your company name, business activity, VAT status and approximate monthly transaction count are a good start. Tell us how many staff you have, whether you make overseas transactions, which software you use and whether any filings are overdue.
Can I see my accounts online?
Yes. Authorised users can view recorded transactions and documents through the cloud accounting system. We finalise reports after receiving and checking your documents, following your monthly reporting schedule.
Talk to our accounting team
Get an accounting quotation for your company
Book a free 30-minute consultation. Tell us about your business and we’ll explain which services you need and what they cost.
Monday–Friday, 9:00–18:00 · Bangkok time
Contact Our Multilingual Team in Thailand
Our team speaks English, Chinese (Mandarin), Russian, Kazakh, Burmese, Thai, and Indonesian — Monday to Friday, 9AM–6PM Bangkok time.
Get in Touch
Leave us a message and a UnionSPACE representative will contact you within 12 hours.
