{"id":4272,"date":"2026-07-10T06:16:57","date_gmt":"2026-07-09T23:16:57","guid":{"rendered":"https:\/\/plizz.co\/?p=4272"},"modified":"2026-07-10T06:18:26","modified_gmt":"2026-07-09T23:18:26","slug":"accounting-services-thailand-guide","status":"publish","type":"post","link":"https:\/\/plizz.co\/th\/blog\/accounting-services-thailand-guide\/","title":{"rendered":"Accounting Services in Thailand: The Complete Guide for SMEs (2026)"},"content":{"rendered":"\n<p><em>Written by the Plizz team. Plizz (Thailand) Co., Ltd. is certified by the Federation of Accounting Professions of Thailand and has provided accounting and legal services to SMEs in Bangkok since 2015.<\/em><\/p>\n\n\n\n<p>Every registered company in Thailand has to keep proper books, file taxes monthly, and submit audited financial statements once a year. That applies whether the company traded or not. So if you run an SME here, the question is not whether you need accounting services in Thailand. It is how much of the work you handle yourself, and who does the rest.<\/p>\n\n\n\n<p>This guide covers what accounting services actually include, the filing deadlines that apply in 2026, what the services cost, and how to choose a firm without getting burned. It is written for foreign entrepreneurs and SME owners, because the pain points we see most often, from surprise audit requirements to personal fines for directors, hit foreign-owned companies hardest.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Accounting Services Cover in Thailand<\/h2>\n\n\n\n<p>&#8220;Accounting&#8221; in Thailand means more than bookkeeping. A typical outsourced arrangement for an SME includes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bookkeeping: recording transactions under Thai standards, reconciling bank accounts, and archiving documents for the year-end audit.<\/li>\n\n\n\n<li>Monthly tax preparation and filing: withholding tax returns and VAT returns, prepared and submitted to the Revenue Department.<\/li>\n\n\n\n<li>Payroll: salary computation, personal income tax withholding, and social security filings for your employees.<\/li>\n\n\n\n<li>Financial statements: monthly management reports, plus the statutory year-end statements.<\/li>\n\n\n\n<li>Audit coordination: preparing the file for the independent CPA who must sign off your annual accounts.<\/li>\n\n\n\n<li>Corporate tax returns: the half-year estimate (PND.51) and the annual return (PND.50).<\/li>\n<\/ul>\n\n\n\n<p>Two legal points shape all of this. First, most SMEs report under TFRS for NPAEs, the Thai financial reporting standard for non-publicly accountable entities. It is simpler than full TFRS but still a formal standard, and your bookkeeper needs to know it. Second, the Accounting Act requires companies to appoint a qualified bookkeeper, keep accounting records for at least five years, and maintain the statutory books in Thai.<\/p>\n\n\n\n<p>That last point surprises people. Your day-to-day reporting can and should run in English if you are a foreign owner who wants to actually read your numbers. The Thai-language statutory layer sits underneath it, and a competent firm maintains both without you having to think about it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Accounting Compliance Matters for Foreign-Owned SMEs<\/h2>\n\n\n\n<p>The penalties are personal. Section 40 of the Accounting Act extends liability for filing failures from the company to the managing director, unless the director can prove they neither participated in nor consented to the breach. In practice:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Failing to submit audited financial statements can cost up to THB 100,000 for the company and another THB 100,000 for the directors.<\/li>\n\n\n\n<li>Failing to hold the annual general meeting on time carries fines of up to THB 20,000 for the company and THB 50,000 for the directors.<\/li>\n\n\n\n<li>Unpaid tax accrues a surcharge of 1.5% per month until it is settled.<\/li>\n<\/ul>\n\n\n\n<p>Then there is the strike-off risk. A company that fails to file financial statements for three consecutive years can be removed from the Department of Business Development (DBD) registry. The DBD removed more than 11,500 businesses from the register in 2024 for exactly this. A deregistered company loses its legal status, and reinstatement means going to court.<\/p>\n\n\n\n<p>For foreign owners, the indirect consequences often bite first. Outstanding filings can block work permit renewals, complicate banking relationships, and cause problems in BOI compliance reviews. If your work permit renewal is due in March and last year\u2019s financial statements were never filed, you have a much bigger problem than a fine.<\/p>\n\n\n\n<p>One more thing, because it catches almost everyone: dormant companies are not exempt. A company with zero revenue and zero transactions still needs its accounts closed, audited by a CPA, approved at an AGM, and filed. Plenty of foreigners hold a Thai company that &#8220;does nothing&#8221; and discover years of accumulated penalties the day they try to use it, sell it, or close it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Your Monthly Compliance Calendar in 2026<\/h2>\n\n\n\n<p>These are the filings a typical VAT-registered SME with staff handles every month. Deadlines count from the end of the month in which the payment or transaction happened.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Filing<\/strong><\/td><td><strong>What it covers<\/strong><\/td><td><strong>Paper deadline<\/strong><\/td><td><strong>E-filing deadline<\/strong><\/td><\/tr><\/thead><tbody><tr><td>PND.1<\/td><td>Withholding tax on salaries<\/td><td>7th of following month<\/td><td>15th<\/td><\/tr><tr><td>PND.3<\/td><td>Withholding tax on payments to individuals (services, rent, professional fees)<\/td><td>7th<\/td><td>15th<\/td><\/tr><tr><td>PND.53<\/td><td>Withholding tax on payments to Thai companies<\/td><td>7th<\/td><td>15th<\/td><\/tr><tr><td>PP.30<\/td><td>Monthly VAT return (VAT-registered businesses)<\/td><td>15th<\/td><td>23rd<\/td><\/tr><tr><td>PP.36<\/td><td>Self-assessed VAT on services bought from abroad<\/td><td>7th<\/td><td>15th<\/td><\/tr><tr><td>SSO<\/td><td>Social security contributions for employees<\/td><td>15th<\/td><td>15th (SSO e-services)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Three things to know about this table in 2026.<\/p>\n\n\n\n<p><strong>Withholding tax returns must be e-filed. <\/strong>Since 1 January 2025, PND forms go through the Revenue Department\u2019s e-filing system by default; paper is only accepted with a written explanation. If your accountant is still filing paper withholding tax returns, ask why. For rates and payment categories, see our <a href=\"https:\/\/plizz.co\/tax-in-thailand\/withholding-tax\/\">withholding tax guide<\/a>.<\/p>\n\n\n\n<p><strong>The 8-day e-filing extension runs to 31 January 2027. <\/strong>The extended deadlines in the right-hand column depend on a Ministry of Finance notification that currently expires at the end of January 2027. It has been renewed every three years since 2012, but build your internal deadlines around the statutory dates and treat the extension as buffer.<\/p>\n\n\n\n<p><strong>Social security changed this year. <\/strong>From 1 January 2026, the wage ceiling for contributions increased, lifting the maximum monthly contribution from THB 750 to THB 875 for the employee, matched by the employer. The ceiling now rises in stages every three years. And from October 2026, the new Employee Welfare Fund adds another payroll registration and contribution for employers that do not already operate a qualifying provident fund. If payroll already eats your time, this is the year it gets worse. It is also exactly the kind of work a <a href=\"https:\/\/plizz.co\/our-services\/payroll-outsourcing\/\">payroll outsourcing arrangement<\/a> absorbs for you; our <a href=\"https:\/\/plizz.co\/blog\/payroll-outsourcing-thailand-guide\/\">payroll outsourcing guide<\/a> explains how it works in practice.<\/p>\n\n\n\n<p>One more note for VAT-registered companies: the Revenue Department replaced the PP.30 form with effect from 1 March 2026, and filings on the old form are rejected. Our <a href=\"https:\/\/plizz.co\/blog\/thailand-vat-registration-complete-guide\/\">Thailand VAT registration guide<\/a> covers the new form and the current registration rules in detail.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Annual Compliance Cycle<\/h2>\n\n\n\n<p>The annual cycle is sequential. Each step depends on the one before it, which is why sloppy bookkeeping in Q4 turns into missed statutory deadlines in Q2.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Close the books<\/strong> after your fiscal year ends. Most Thai companies use a 31 December year-end.<\/li>\n\n\n\n<li><strong>Audit.<\/strong> A licensed CPA must audit the financial statements. Every limited company needs this, dormant or not. Auditors are overbooked between January and April, so engage yours early, ideally before the year even closes.<\/li>\n\n\n\n<li><strong>Hold the AGM within 4 months of year-end.<\/strong> Shareholders approve the audited statements. For a 31 December 2025 year-end, that meant holding the AGM by 30 April 2026.<\/li>\n\n\n\n<li><strong>File with the DBD within 1 month of the AGM.<\/strong> Financial statements go through the DBD e-Filing system in XBRL format, with the audit report and signed Thai-language statements attached. The DBD publishes a free Excel-to-XBRL template. The updated shareholder list (BOJ.5) must be filed within 14 days of the AGM. For December 2025 year-ends, the DBD called for submissions by 2 June 2026.<\/li>\n\n\n\n<li><strong>File PND.50 with the Revenue Department within 150 days of year-end.<\/strong> This is the annual corporate income tax return, based on the audited numbers, and it goes to a different agency than the DBD filing. Mid-year, you also file PND.51, an estimate of the full-year profit. Underestimate that by more than 25% and a surcharge applies.<\/li>\n<\/ol>\n\n\n\n<p>If your company qualifies as an SME for tax purposes (paid-up capital of THB 5 million or less and annual revenue of THB 30 million or less), the first THB 300,000 of net profit is exempt, profit up to THB 3 million is taxed at 15%, and anything above that at 20%. The official filing systems are the <a href=\"https:\/\/efiling.dbd.go.th\/\">DBD e-Filing portal<\/a> for financial statements and the <a href=\"https:\/\/www.rd.go.th\/english\/index-eng.html\">Revenue Department<\/a> for tax returns.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Accounting Services Cost in Thailand<\/h2>\n\n\n\n<p>Most firms in Bangkok price SME accounting as a monthly package tiered by transaction volume, with payroll priced per employee and the year-end work either bundled or billed separately. Hourly billing exists but is rare for ongoing SME work.<\/p>\n\n\n\n<p>What actually drives your price:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Transaction volume. Fifty documents a month is not five hundred, and packages are usually tiered accordingly.<\/li>\n\n\n\n<li>VAT registration. A VAT-registered company adds a monthly PP.30 cycle, tax invoice checking, and input VAT reconciliation.<\/li>\n\n\n\n<li>Payroll headcount. Each employee adds withholding calculations, social security, and from October 2026, Employee Welfare Fund contributions.<\/li>\n\n\n\n<li>Cross-border activity. Foreign payments bring PP.36 self-assessments, withholding on outbound payments, and potentially transfer pricing disclosure.<\/li>\n\n\n\n<li>The audit fee. This is billed by the independent CPA and is separate from your accounting package. Budget for it from day one.<\/li>\n<\/ul>\n\n\n\n<p>The comparison trap is the headline price. A cheap monthly quote often excludes year-end financial statement preparation, the DBD filing, the XBRL conversion, or &#8220;extra&#8221; filings, each billed on top. When you compare providers, ask each one for the all-in annual cost for your company\u2019s actual profile: transaction volume, VAT status, headcount. That number is comparable. Monthly headline prices are not.<\/p>\n\n\n\n<p>This is also the argument for fixed monthly pricing that includes the annual cycle. You know the year\u2019s cost in January, and the firm has no incentive to go hunting for billable extras in December.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">In-House Accountant vs Outsourced Firm<\/h2>\n\n\n\n<p>For most foreign-owned SMEs under about 20 staff, the realistic choice is between hiring one accountant and outsourcing the whole function.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>Criteria<\/strong><\/td><td><strong>In-house accountant<\/strong><\/td><td><strong>Outsourced firm<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Monthly cost<\/td><td>Salary plus social security, software, and training<\/td><td>Fixed package fee<\/td><\/tr><tr><td>Coverage<\/td><td>One person\u2019s knowledge<\/td><td>A team covering bookkeeping, tax, and payroll<\/td><\/tr><tr><td>Absence risk<\/td><td>Filings stop if they are sick or resign<\/td><td>Continuity is the firm\u2019s problem<\/td><\/tr><tr><td>English reporting<\/td><td>Depends on the individual<\/td><td>Should be standard (verify before signing)<\/td><\/tr><tr><td>Software<\/td><td>You buy and maintain it<\/td><td>Included in the service<\/td><\/tr><tr><td>Scaling<\/td><td>Hire again<\/td><td>Move up a package tier<\/td><\/tr><tr><td>Audit and DBD filing<\/td><td>Often needs external help anyway<\/td><td>Coordinated by the firm<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>The honest counterpoint: an in-house accountant sitting next to you learns your business in a way an external team has to work at. If your volume genuinely justifies a finance hire, a common setup is one internal person for operations plus an outsourced firm for compliance and statutory filings. For everyone else, outsourcing usually wins on cost and reliability.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Choose an Accounting Firm in Thailand<\/h2>\n\n\n\n<p>Signals worth checking before you sign anything:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Certification. <\/strong>Is the firm certified by the Federation of Accounting Professions of Thailand? Who will be the named bookkeeper for your company under the Accounting Act?<\/li>\n\n\n\n<li><strong>English support that goes beyond sales. <\/strong>The test is not the proposal document. It is whether the person handling your monthly questions writes clear English.<\/li>\n\n\n\n<li><strong>Platform access. <\/strong>Can you see your documents, filings, and financial data online at any time, or do you get a PDF when you ask for one? You should be able to check filing status without sending an email.<\/li>\n\n\n\n<li><strong>Scope. <\/strong>If the firm handles accounting but not payroll, corporate secretary work, or work permits, you end up coordinating several providers. That is fine at 50 employees and painful at 5.<\/li>\n\n\n\n<li><strong>Pricing structure. <\/strong>Fixed monthly with the year-end included, or a base fee plus extras? Get the all-in annual figure in writing.<\/li>\n\n\n\n<li><strong>Exit terms. <\/strong>Who holds your accounting data and statutory records if you leave? Getting your own books back should never be a negotiation.<\/li>\n<\/ul>\n\n\n\n<p>Then ask every candidate the same question: &#8220;What happens in my first month, and what do you need from me by when?&#8221; A firm with a real onboarding process answers precisely. A firm that improvises the answer will improvise your filings too.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Plizz Can Help<\/h2>\n\n\n\n<p>Plizz has provided <a href=\"https:\/\/plizz.co\/our-services\/accounting\/\">accounting services for SMEs in Thailand<\/a> since 2015, built specifically for foreign entrepreneurs and international business owners. The packages cover bookkeeping, monthly tax filings, payroll and social security, financial reporting, and coordination of the year-end statutory audit, all under one fixed monthly fee with no hidden extras.<\/p>\n\n\n\n<p>Everything runs on an online platform with 24\/7 access to your documents, filings, and financial data, in English. Plizz is certified by the Federation of Accounting Professions of Thailand, was founded by two experienced CFOs, and won the Thailand Startup Award in 2017. Because the firm also handles company registration, corporate secretary work, and visas and work permits, you deal with one team instead of juggling three providers.<\/p>\n\n\n\n<p><strong>Ready to hand over the filings? <\/strong>See what an all-inclusive package looks like for your company on the <a href=\"https:\/\/plizz.co\/our-services\/accounting\/\">Plizz accounting services page<\/a>, or contact the team for a fixed quote based on your transaction volume and headcount.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Frequently Asked Questions<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Does a dormant company in Thailand still need an audit?<\/h3>\n\n\n\n<p>Yes. Every registered limited company must prepare financial statements, have them audited by a licensed CPA, approve them at an annual general meeting, and file them with the DBD and the Revenue Department, even with zero activity. Dormant companies that skip this accumulate the same fines as active ones.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What accounting standard applies to SMEs in Thailand?<\/h3>\n\n\n\n<p>Most privately held SMEs report under TFRS for NPAEs, the Thai financial reporting standard for non-publicly accountable entities. Listed companies and certain regulated businesses use full TFRS.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What are the monthly tax filing deadlines in Thailand in 2026?<\/h3>\n\n\n\n<p>Withholding tax returns (PND.1, PND.3, PND.53) are due by the 7th of the following month, or the 15th via e-filing. VAT returns (PP.30) are due by the 15th, or the 23rd via e-filing. Social security contributions are due by the 15th. The 8-day e-filing extension is confirmed until 31 January 2027.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How long must accounting records be kept in Thailand?<\/h3>\n\n\n\n<p>At least five years under the Accounting Act. The Revenue Department can require records to be kept for up to seven years for tax audit purposes, so most firms archive for seven.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Can my company\u2019s accounts be kept in English?<\/h3>\n\n\n\n<p>Statutory accounting records must be in Thai or accompanied by a Thai translation. Day-to-day reporting for owners and managers can run entirely in English. A good firm maintains both layers, so you read your reports in English while the statutory books stay compliant.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What happens if we miss the financial statement filing deadline?<\/h3>\n\n\n\n<p>Fines apply to both the company and its directors, up to THB 100,000 each for unsubmitted audited statements. Miss three consecutive years and the company can be struck off the DBD register. Late corporate tax also accrues a 1.5% monthly surcharge.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What changed for payroll in 2026?<\/h3>\n\n\n\n<p>The social security wage ceiling rose on 1 January 2026, taking the maximum monthly contribution from THB 750 to THB 875 for the employee, matched by the employer, with further staged increases every three years. The Employee Welfare Fund starts in October 2026 and adds a new contribution for employers without a qualifying provident fund.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Does my company qualify for Thailand\u2019s SME tax rates?<\/h3>\n\n\n\n<p>If paid-up capital is THB 5 million or less and annual revenue is THB 30 million or less, the first THB 300,000 of net profit is exempt from corporate income tax, profit up to THB 3 million is taxed at 15%, and anything above that at 20%.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Bottom Line<\/h2>\n\n\n\n<p>Thai accounting rules are strict, but they are predictable. The companies that get into trouble are almost never the ones facing unusual situations. They are the ones that let monthly filings slip, booked the auditor in April, or assumed a dormant company could be ignored. Put the calendar in the hands of a firm that owns it end to end, and compliance becomes a line item instead of a recurring emergency.<\/p>\n\n\n\n<p>If you want that firm to be Plizz, start with the <a href=\"https:\/\/plizz.co\/our-services\/accounting\/\">accounting services page<\/a> or send the team a message. A fixed quote takes a day, not a week.<\/p>\n\n\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does a dormant company in Thailand still need an audit?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. 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firm.<\/p>","protected":false},"author":18,"featured_media":4273,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[42],"tags":[17],"class_list":["post-4272","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tax","tag-accounting"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Accounting Services Thailand 2026: SME Guide | Plizz<\/title>\n<meta name=\"description\" content=\"Learn what accounting services in Thailand cost, which filings SMEs must make in 2026, and how to choose the right firm.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/plizz.co\/th\/blog\/accounting-services-thailand-guide\/\" \/>\n<meta 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