Accounting and Bookkeeping Services in Thailand
Building Trust Through Transparency and Financial Clarity
The professional bookkeeping services in Thailand designed to give businesses complete financial clarity while staying fully compliant with Thai tax regulations. Whether you’re a small business, BOI-promoted company, or foreign-owned entity, we help you maintain clean, reliable records that support confident decision-making and audit readiness.
What We Mean by Accounting and Bookkeeping Services
Every company must always do accounting
Accounting builds on bookkeeping. It interprets, structures, and presents your financial data in a way that supports smarter business operations, long-term planning, and financial transparency.
Bookkeeping refers to the organized and accurate recording of all financial transactions. It’s the foundation upon which every strategic financial decision rests.
We offer a clean, professional structure to your finances — without blending these essential functions with tax filings or legal reporting. Those are separate services. Here, we focus purely on what keeps your financial health in check.
Why Accounting and Bookkeeping Are Non-Negotiable for Businesses in Thailand
In Thailand’s fast-evolving economy, accounting and bookkeeping are not optional back-office duties. They are strategic business pillars. Whether you’re a growing Thai SME, a BOI-promoted enterprise, or an overseas company entering the market, maintaining reliable and accurate financial records is not only a regulatory requirement — it’s the key to survival, trust, and long-term success.
Who Needs Bookkeeping and Accounting in Thailand?
Foreign-Owned Businesses
Thailand requires all companies — local or foreign — to maintain proper accounting books. If you’re reporting to a parent company abroad, consistency, bilingual reporting, and international standards are key.
SMEs and Startups
Time and manpower are limited. By outsourcing, you gain accuracy and insight without overhead — and your internal team stays focused on operations.
BOI Promoted Companies
BOI status brings additional reporting burdens. While tax filings are separate, BOI-promoted firms must ensure their books are always audit-ready.
Growth-Stage Companies
s your business grows, so does your responsibility. We provide structure and stability through transitions like new investments, restructuring, or leadership changes.
Accounting and Bookkeeping Packages
With our all-in-one accounting and bookkeeping package, you get the tools, support, and expertise you need to keep your financial records accurate, organized, and compliant.
Acc Starter Package
1-30 Transactions per month-
1-30 Transactions per month
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Accounting Document Archiving
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Monthly Income Statement (PL)
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Statement of Financial Position (BS)
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Statement of Changes in Equity
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Monthly Fixed Asset Register
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Monthly General Ledger (GL)
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Monthly Trial Balance (TB)
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Accounts Receivable Aging Report
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Accounts Payable Aging Report
Acc Growth Package
31-60 Transactions per month-
31-60 Transactions per month
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Accounting document archiving
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Monthly Income Statement (PL)
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Statement of Financial Position (BS)
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Statement of Changes in Equity
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Monthly Fixed Asset Register
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Monthly General Ledger (GL)
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Monthly Trial Balance (TB)
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Accounts Receivable Aging Report
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Accounts Payable Aging Report
Acc Strategic Package
61-100 Transactions per month-
61-100 Transactions per month
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Accounting document archiving
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Monthly Income Statement (PL)
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Statement of Financial Position (BS)
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Statement of Changes in Equity
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Monthly Fixed Asset Register
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Monthly General Ledger (GL)
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Monthly Trial Balance (TB)
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Accounts Receivable Aging Report
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Accounts Payable Aging Report
Acc Executive Package
101-150 Transactions per month-
101-150 Transactions per month
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Accounting document archiving
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Monthly Income Statement (PL)
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Statement of Financial Position (BS)
-
Statement of Changes in Equity
-
Monthly Fixed Asset Register
-
Monthly General Ledger (GL)
-
Monthly Trial Balance (TB)
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Accounts Receivable Aging Report
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Accounts Payable Aging Report
Why Internal Accounting Teams Are Often Not Enough
Hiring an in-house bookkeeper may seem like a cost-effective choice at first. After all, having someone physically present in your office gives the illusion of greater control. But the reality is often very different — and riskier than you think.
Our solution offers the power and dependability of a dedicated team — trained professionals working under tested processes, with backup systems, documentation, and multi-person reviews. You gain expertise across multiple disciplines without the cost of hiring full-time experts in-house.
By partnering with us, you protect your business against knowledge loss, improve accuracy, and create a future-proof accounting foundation — so your operations remain stable no matter what changes come your way.
Over-reliance on One Individual
Most internal accounting teams are small — often just one or two people. If that individual resigns, takes extended leave, or falls ill, your financial operations come to a standstill. Knowledge is lost, processes break, and deadlines are missed.
Limited Skill Set
In-house bookkeepers may be proficient in basic entries but lack experience in advanced accounting principles, regulatory compliance, or systems integration. As your business grows, so do the complexities — and a single individual may not have the expertise to keep up.
Risk of Human Error or Fraud
A lack of oversight and internal controls increases the chance of mistakes or, worse, financial misconduct. Without segregation of duties and accountability frameworks, internal fraud often goes undetected.
No Backup During Transitions
Companies relying solely on internal staff are more vulnerable during transitions — like end-of-year closing, expansions, audits, or changes in leadership. When there’s no institutional backup or professional system in place, continuity suffers.
Industries We Serve with Tailored Accounting & Bookkeeping Services Support
Specific industry accounting and bookkeeping services designed to meet the unique operational and compliance needs of your business. Our team ensures precise financial reporting, statutory compliance, and clear visibility.
Clarity in Cost, Margin, and Stock Movement
We assist trading companies with accurate recording of purchases and sales, inventory movement tracking, and preparation of monthly financial statements. Our services include reconciliation of accounts payable and receivable, cost of goods sold (COGS) calculation, and timely submission of VAT and withholding tax (WHT) filings.
Accurate Revenue Recognition and Project-Based Cost Control
For service-oriented businesses, we provide monthly bookkeeping, project-based revenue and cost allocation, and complete financial reporting. Our team manages your output tax (VAT), input tax credits, and ensures compliance with WHT on contractor and professional fees.
True Production Cost and Inventory Valuation Transparency
For service-oriented businesses, we provide monthly bookkeeping, project-based revenue and cost allocation, and complete financial reporting. Our team manages your output tax (VAT), input tax credits, and ensures compliance with WHT on contractor and professional fees.
Sales Reconciliation Across Any Platforms
We support e-commerce sellers by reconciling payment gateways and bank deposits across platforms such as Shopify, Lazada, and Shopee. We ensure correct recording of online sales, shipping income, discounts, returns, and platform fees.
Why choose us for
Outsource Accounting and Bookkeeping Services
We specialize in supporting foreign businesses in Bangkok, providing accurate, timely, and compliant financial solutions.
The packages are include:
- Email notification
- Input - Output report
- Issue WHT Certificate
- Register RD e-filing
- Monthly tax Filing
- Documents archiving
- Tax Online Reporting
- 24/7 data access
With our deep knowledge of Thai regulations and international standards, you can trust us to manage your financials with precision and transparency.
ACCOUNTINFIRM CO., LTD.
Frequently asked questions | FAQs
We have answered FAQs about Outsourced Tax Services in Thailand
How can I get started with your services?
“Getting started with our services is simple. You can contact us via phone or email to schedule an initial consultation. During this meeting, we’ll discuss your specific accounting needs and challenges, and tailor a solution that fits your business. Whether you require ongoing accounting bookkeeping and tax filing or more complex accounting services, we will create a customized plan that aligns with your goals. Once the plan is in place, we will start working on your accounts immediately, ensuring a smooth and hassle-free transition.”
Do you offer payroll services?
“Yes, we offer complete payroll services to ensure that your employees are paid accurately and on time, and that all necessary deductions are made for taxes and social security contributions. We also manage employee benefits, bonuses, and other compensation-related matters. Our payroll services are designed to relieve you of the administrative burden and ensure compliance with Thai labor laws, including the timely filing of payroll-related taxes and social security payments.”
How do I know if my business needs accounting bookkeeping and tax filing services?
“Bookkeeping is ideal if your business requires basic financial record-keeping, such as tracking daily transactions, generating invoices, or managing payroll. However, if your business needs more comprehensive financial management—like preparing financial statements, handling taxes, offering insights for business growth, or ensuring regulatory compliance—then full accounting bookkeeping and tax filing services are recommended. At Accountinfirm CO., LTD., we offer both services, so we can easily scale to your needs as your business grows or becomes more complex.”
Can you assist with year-end audits and financial report?
“Yes, we provide full support during the year-end audit process. We help prepare all necessary financial reports, ensuring that they are accurate and compliant with Thai accounting standards. Our team works closely with auditors to provide them with the documentation they need, such as balance sheets, income statements, and tax returns, ensuring the audit runs smoothly. We also assist in addressing any questions or concerns raised during the audit, ensuring that your company remains in good standing with regulatory authorities.”
How do you ensure the accuracy of financial reports?
“Accuracy is crucial in accounting bookkeeping and tax filing, and we maintain rigorous internal controls to ensure that all financial reports are precise and compliant with regulations. Our experienced accountants review every report to verify its accuracy, and we use state-of-the-art accounting software to track all financial transactions. Additionally, our team adheres to Thai accounting standards principles, such as TFRS (Thai Financial Reporting Standards), ensuring that your financial statements are both accurate and reliable.”
What services does your accounting firm provide?
“Our firm offers a comprehensive range of accounting bookkeeping and tax filing services to meet all your business needs. These include auditing support, and advisory services. Whether you’re a small business or a larger corporation, we ensure your financial operations run smoothly and in compliance with local and international regulations. Our specialization in assisting foreign-owned businesses in Thailand helps you navigate complex accounting requirements with ease.”
How can your firm help with tax compliance in Thailand?
“We ensure that your business stays fully compliant with Thailand’s tax laws. Our team stays current on the latest tax regulations and deadlines, providing accurate and timely tax filings to avoid any penalties. We assist with corporate tax, VAT, withholding tax, and personal income tax for both locals and expats. Additionally, we help you optimize your tax strategy, ensuring that you take advantage of all deductions and benefits available to your business.”
Do you offer services for foreign-owned businesses?
“Yes, we specialize in serving foreign-owned businesses and expatriates operating in Thailand. We understand the unique challenges faced by foreign companies when navigating Thai accounting and tax laws. Our expertise ensures that you remain compliant with all legal requirements, from company registration, accounting bookkeeping and tax filing, payroll, and tax optimization strategies for foreign entities. Our tailored solutions allow foreign businesses to operate smoothly and confidently in Thailand.”
What is the difference accounting VS bookkeeping services?
“Bookkeeping focuses on recording daily financial transactions, while accounting goes a step further by analyzing and interpreting that data. Bookkeepers keep financial records organized, and accountants use those records to provide insights, generate reports, and ensure tax compliance.”
What is the difference a tax preparer VS a bookkeeper?
“A bookkeeper handles day-to-day financial tasks like recording income and expenses, while a tax preparer focuses on preparing and filing tax returns. Simply put, bookkeepers manage ongoing financial records, and tax preparers handle taxes.”
Our Compliance Advisory Services
We work closely with your management team to ensure your business is audit-ready and up to date with all local compliance requirements.
At ACCOUNTINFIRM CO., LTD., we provide industry-specific
Accounting and Bookkeeping Services in Thailand.
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