Compiled by the YMTD Accounting Partner team · Information as of 6 November 2026

A limited company (Co., Ltd.) is an official juristic person (company) established under the Civil and Commercial Code. Its registered capital is divided into shares of equal par value (not less than 5 baht per share) held by at least 2 shareholders, and all shareholders bear limited liability up to the remaining unpaid amount on their subscribed shares [1], [3]. The structure of a limited company differs markedly from a “limited partnership”, where managing partners bear joint unlimited liability for business debts [1], [3], and from a “public limited company (PLC)”, which is incorporated under the Public Limited Companies Act B.E. 2535 (1992) to offer shares to the general public [4]. Understanding the differences among these three types of juristic entities across legal frameworks, debt liability, tax rates, and annual audit expenses is essential baseline knowledge for establishing a safe, transparent, and tax-efficient corporate structure.

Key Takeaways

  • Limited company (Co., Ltd.): Current law requires a minimum of 2 promoters and shareholders under the Civil and Commercial Code Amendment Act (No. 23) B.E. 2565 (2022). Shareholders have limited liability capped strictly at the unpaid portion of their shares [1], [3].
  • Limited partnership: Requires at least 2 partners consisting of two distinct classes. The “managing partner” (unlimited liability partner) bears joint unlimited personal liability for all debts, putting personal assets at risk in insolvency [1], [3].
  • Public limited company (PLC): Requires at least 15 promoters and at least 5 board directors. Formed specifically to offer shares to the public, though it does not necessarily have to be listed on a stock exchange (such as SET or mai) [4].
  • Corporate income tax rates: Both limited companies and limited partnerships are taxed at identical rates under the Revenue Code. Qualifying small and medium-sized enterprises (SMEs) enjoy tax exemption on the first 300,000 baht of net profit, a 15% rate on profit between 300,001 and 3,000,000 baht, and 20% on profit exceeding 3,000,000 baht [2].
  • Audit costs: Limited companies of all sizes must have their financial statements audited by a certified public accountant (auditor (CPA)) only. In contrast, small limited partnerships (capital up to 5 million baht, total assets and revenue up to 30 million baht) are permitted by law to use either a Tax Auditor (TA) or a CPA [3].

Introduction and Scope: Choosing the Right Business Entity for SMEs in 2026

When commercial revenue outgrows the individual level (exceeding 1.8 million baht annually requiring VAT registration, or reaching personal income tax brackets above 20%), registering a juristic person is a fundamental strategy for tax management [2]. However, misconceptions persist that forming a limited partnership incurs less tax than a limited company, or that incorporating a company still requires at least 3 shareholders, a rule abolished when the revised law took effect in early 2023 [1].

In 2026, regulatory authorities—including the Department of Business Development (DBD), the Ministry of Commerce, and the Revenue Department—have fully integrated electronic compliance monitoring. Selecting an entity structure mismatched to business scale introduces tax audit and penalty risks, as well as severe personal asset exposure for founders. This article details the statutory rules, tax frameworks, liabilities, and practical hidden costs across limited companies, limited partnerships, and public companies to guide strategic decisions.

Legal Framework and Tax Rules Governing Limited Companies, Partnerships, and Public Companies

Operating a juristic entity in Thailand is governed primarily by three core statutes: the Civil and Commercial Code, the Public Limited Companies Act, and the Revenue Code. The mandatory compliance provisions include:

1. Civil and Commercial Code (CCC) Amendment Act (No. 23) B.E. 2565 (2022)

The Civil and Commercial Code Amendment Act (No. 23) B.E. 2565 (2022) established notable operational parameters for limited companies [1]:

  • Number of promoters and shareholders (Section 1097): The minimum number of individual promoters required to incorporate a limited company was lowered from 3 persons to “at least 2 persons” [1].
  • Validity of Memorandum of Association (Section 1099, Paragraph 2): A registered Memorandum of Association (Bor.Or.Jor.2) automatically expires if the statutory incorporation meeting and company registration are not completed within 3 years from the registration date [1].
  • Share value and capital call-up (Section 1110, Paragraph 2 and Section 1117): Each share in a limited company must have a par value of not less than 5 baht, and initial incorporation calls must require payment of at least 25% of subscribed share value [1], [3].
  • Notice of general meetings (Section 1175): Publication in local newspapers is no longer required for companies with named shares. Notice by registered mail or personal delivery at least 7 days in advance (or 14 days for special resolutions) is sufficient [1].
  • Dividend payment timeline (Section 1201, Paragraph 4): Dividend distribution must be fully executed within 1 month from the date of approval by the shareholders' meeting or board resolution [1].

2. Public Limited Companies Act B.E. 2535 (1992)

The Public Limited Companies Act B.E. 2535 (1992) sets structural requirements distinct from private limited companies [4]:

  • Promoters and directors (Sections 15 and 67): Requires at least 15 individual promoters and a board of directors of not less than 5 members, with at least half residing in Thailand [4].
  • Share payment (Section 51): Subscribers must pay 100% of the share price in full upon subscription; installment calls of 25% are not permitted [4].
  • Public offering of securities: Incorporated specifically for public capital raising, a PLC may offer shares, debentures, or warrants to the general public subject to securities laws [4].

3. Accounting Act B.E. 2543 (2000) and Auditor Criteria

Under the Accounting Act B.E. 2543 (2000), all juristic entities must prepare books of accounts and file annual financial statements with the DBD (Form Sor.Bor.Chor.3) within 1 month after approval by the shareholders' general meeting (for limited companies and PLCs) or within 5 months of the fiscal year-end (for limited partnerships). Auditor requirements differ [3]:

  • Limited companies and PLCs: Must be audited and certified solely by a licensed auditor (CPA), regardless of whether the business is small, earns low revenue, or remained dormant during the year [3].
  • Small limited partnerships: Under Ministerial Regulations issued pursuant to the Accounting Act B.E. 2543 (2000), registered partnerships with paid-up capital not exceeding 5 million baht, total assets not exceeding 30 million baht, and total revenue not exceeding 30 million baht may engage either a Tax Auditor (TA) or a CPA [3]. Exceeding any one threshold mandates a CPA [3].

4. Revenue Code and Corporate Income Tax Regulations

Pursuant to Section 39 of the Revenue Code, both limited companies and limited partnerships are classified as “companies or juristic partnerships”. They must compute net taxable profit on an accrual basis (income minus deductible expenses under Sections 65 bis and 65 ter), submitting P.N.D.51 (half-year corporate income tax return) within 2 months of the mid-year mark, and P.N.D.50 (corporate income tax return) within 150 days of the fiscal year-end [2].

Under Royal Decrees No. 530 and No. 583 issued under the Revenue Code, qualifying SME entities (paid-up capital on the last day of the accounting period not exceeding 5 million baht and annual gross revenue not exceeding 30 million baht) qualify for progressive corporate income tax brackets [2]:

  • Net taxable profit 1 – 300,000 baht: 0% tax rate (exempt) [2]
  • Net taxable profit 300,001 – 3,000,000 baht: 15% tax rate [2]
  • Net taxable profit exceeding 3,000,000 baht: 20% tax rate [2]

Entities failing the SME thresholds (capital over 5 million baht or revenue over 30 million baht), as well as all PLCs, are taxed at a flat rate of 20% on total net taxable profit starting from the first baht [2].

Comparing Co., Ltd. vs Limited Partnership vs Public Company

Below is a comparative breakdown of regulatory rules and operational obligations among the three entity types:

Comparison Criteria Limited Partnership Limited Company (Co., Ltd.) Public Limited Company (PLC)
1. Governing Law CCC, Book III, Title 22 [1], [3] CCC Amendment Act (No. 23) B.E. 2565 (2022) [1] Public Limited Companies Act B.E. 2535 (1992) [4]
2. Min. Shareholders / Promoters At least 2 partners [1], [3] At least 2 persons [1] At least 15 persons [4]
3. Liability for Debts Managing partner bears unlimited liability; limited partner capped at contribution [1], [3] Limited to unpaid amounts on subscribed shares [3] Limited to unpaid amounts on subscribed shares [4]
4. Par Value and Call-up No minimum par value; based on partnership agreement [3] Min. 5 baht per share; min. 25% called up on incorporation [1], [3] Equal par value per share; must be 100% paid up in full [4]
5. Auditor Qualifications Small: TA or CPA permitted / Large: CPA mandatory [3] CPA mandatory in all circumstances [3] CPA mandatory in all circumstances [3], [4]
6. Corporate Income Tax Rate SME progressive rate (0-20%) or standard 20% [2] SME progressive rate (0-20%) or standard 20% [2] Standard flat rate of 20% on net profit [2]
7. Public Capital Raising Prohibited by law [3] Prohibited under Section 1097 [1] May offer shares and debentures publicly under SEC rules [4]

4 Critical Differences Impacting Business Management

Four primary factors distinguish these structures in day-to-day operations and organizational risk:

1. Debt Risk and Personal Assets (Limited vs Unlimited Liability)

Under Section 1096 of the CCC, shareholders of a limited company are liable only up to the unpaid balance of their subscribed shares [3]. Once shares are fully paid up (100%), creditors cannot legally seize personal assets (such as residential properties, land, personal vehicles, or personal bank accounts) in civil litigation, enforcement proceedings, or corporate insolvency, provided directors have not signed personal guarantees with commercial lenders.

Conversely, CCC Section 1077 requires limited partnerships to maintain two categories of partners, and Section 1087 mandates that the managing partner must belong to the unlimited liability category [1], [3]. If partnership debts or tax liabilities exceed entity assets, creditors hold statutory rights to seize the managing partner's personal wealth until claims are fully settled.

2. Flexibility in Shareholding Restructuring and Share Transfers

Transferring shares in a limited company follows CCC Section 1129, executed in writing signed by transferor and transferee in the presence of at least 1 witness, recorded in the register of shareholders, and reported via Bor.Or.Jor.5 (shareholder list) to the DBD [3]. The process is internal, straightforward, and relatively confidential.

In contrast, altering partners or adjusting capital allocations in a limited partnership requires formally amending the partnership agreement and submitting statutory amendments to the commercial registrar every time, requiring explicit consent from all partners [3].

3. Hidden Costs of Financial Audits (Audit Fee: TA vs CPA)

While a limited company offers superior commercial credibility, it carries higher mandatory fixed costs: financial statements must be examined by a CPA even if the company had zero revenue during the fiscal period [3]. Standard market CPA fees typically start around 10,000 – 25,000+ baht annually. Small limited partnerships may use a Tax Auditor (TA), where audit fees generally start around 5,000 – 12,000 baht annually, lowering initial overhead for bootstrapped micro-ventures [3].

4. Capital Raising Limits: A Co., Ltd. Is Not a PLC, and a PLC Is Not Always Listed

A public limited company is simply a corporate vehicle created under the Public Limited Companies Act B.E. 2535 (1992) allowing public share offerings [4]. Listing shares on the Stock Exchange of Thailand (SET) or Market for Alternative Investment (mai), however, requires satisfying stringent SEC criteria, including minimum paid-up capital benchmarks, track records, internal controls, and independent audit committees. A PLC structure is primarily appropriate for large-scale operations with active public fund-raising objectives [4].

Which Structure Suits Your Business?

Selection depends primarily on debt exposure, client profile, and annual audit budgeting [1], [3]:

  • Choose a Limited Partnership when: Operating a small-scale venture among closely trusted individuals (e.g., family members), carrying no commercial bank debt, carrying minimal warranty or litigation risks, and seeking to minimize initial audit fees via a TA [3].
  • Choose a Limited Company (Co., Ltd.) when: Bidding for contracts with large corporations or government bodies, trading at scale, hiring staff, taking delivery fulfillment risks, or planning to bring in external equity investors, while shielding personal wealth through limited liability [1], [3].
  • Choose a Public Limited Company (PLC) when: Deploying substantial capital (tens of millions of baht), involving 15+ initial founders, raising debt or equity instruments from the public, and preparing for stock exchange listing [4].

Entrepreneurs comparing early-stage options can explore our analysis on Deciding on Business Registration: LP vs Co., Ltd. – Which Suits Your Business?, or engage our team via our company registration service to ensure regulatory filings are compliant from inception.

In-Depth Analysis: Hidden Costs and Legal Risks Often Overlooked

Focusing solely on initial DBD government filing fees when registering an entity can lead to unexpected liabilities across three critical operational areas:

1. The Tax Myth: Limited Partnerships Do Not Save More Tax Than Companies

Under tax legislation, the Revenue Code grants zero special rate privileges to limited partnerships over limited companies [2]. Both entities calculate taxable profits under identical rules, submit withholding tax returns (P.N.D.1, 3, 53) and monthly VAT returns (P.P.30) under the same framework, and access identical 0-20% SME progressive tax brackets [2]. Forming a limited partnership does not yield a single baht of corporate income tax savings over a limited company.

For an exhaustive breakdown of the tax calculations, see Limited Partnership vs Limited Company: Key Differences for New Founders (2026) [2].

2. Litigation Risk and Bankruptcy Liabilities

If a commercial dispute arises or unpaid back taxes accumulate, enforcement officers can only seize assets owned by a limited company (e.g., inventory, machinery, corporate bank accounts). Once corporate assets are liquidated, shortfalls cannot be recovered from shareholders' personal assets [3].

For limited partnerships, when partnership assets fail to satisfy debt decrees, the law grants creditors direct execution against the personal real estate, personal vehicles, and private accounts of the managing partner without limitation [1], [3].

3. The 3-Year Expiration Rule for Memorandum of Association

Under amended CCC Section 1099, Paragraph 2, if founders submit and register a Memorandum of Association but fail to hold the statutory incorporation meeting and complete company registration within 3 years, that Memorandum expires automatically by operation of law [1]. The reserved corporate name and registered business objectives are revoked, requiring founders to restart the filing process from the beginning.

Hypothetical Case Study: Comparing Tax Burden and Risks for a Chiang Mai Coffee Business

To demonstrate practical financial dynamics, consider this hypothetical scenario of a specialty coffee roaster and distributor in Chiang Mai operating as “Lanna Roastery” with the following 2026 fiscal year figures:

  • Paid-up registered capital: 1,000,000 baht
  • Total annual gross revenue: 12,000,000 baht
  • Tax-deductible documented expenses: 10,500,000 baht
  • Net taxable profit (before tax): 1,500,000 baht

Step-by-Step Corporate Income Tax Calculation (SME Scheme)

Because the business maintains paid-up capital under 5 million baht and annual revenue under 30 million baht, it qualifies for the SME tax schedule under Royal Decree No. 530 [2]:

  1. Bracket 1 (0 – 300,000 baht): Tax exempt (300,000 × 0%) = 0 baht [2]
  2. Bracket 2 (300,001 – 1,500,000 baht): Profit of 1,200,000 baht taxed at 15% (1,200,000 × 15%) = 180,000 baht [2]
  3. Total annual corporate income tax payable (P.N.D.50): 0 + 180,000 = 180,000 baht [2]

Tax Conclusion: Whether Lanna Roastery is incorporated as a Co., Ltd. or registered as a Limited Partnership, its corporate income tax liability payable to the Revenue Department is exactly 180,000 baht in both cases [2].

Comparison of Risk Exposure and Fixed Costs

Differences emerge solely in annual professional fees and legal liabilities:

  • Audit Expenses: As a limited partnership, engaging a TA can reduce annual audit fees by roughly 5,000 – 10,000 baht compared to engaging a CPA. A limited company must retain a CPA [3].
  • Liability Exposure: If an unforeseen roasting facility fire causes 8,000,000 baht in collateral losses to adjacent commercial tenants, while company insurance and salvageable business assets total only 3,000,000 baht:
    • Under a Limited Company: Creditor enforcement is capped at the 3,000,000 baht corporate asset pool. Shareholders' personal assets remain sheltered by law once capital calls are fully paid [3].
    • Under a Limited Partnership: Creditors can seek court enforcement against the managing partner's personal family home, vehicles, and private bank accounts for the remaining 5,000,000 baht balance [1], [3].

In strategic risk evaluations, Chiang Mai accounting service professionals consistently highlight that the modest annual audit fee savings of a partnership do not outweigh the personal asset protection provided by a limited company structure.

Designing an Accounting and Tax System with Chiang Mai Accounting Services for Steady Growth

Choosing an organizational form is merely the foundational step. Ongoing security requires maintaining books that comply with statutory accounting and tax standards. Working with an accounting firm offering Chiang Mai accounting services through cloud platforms helps ensure timely withholding tax compliance, correct VAT reporting, and accurate monthly bank reconciliations.

Practical 5-Step Process to Select and Register a Business Entity in 2026

A standard 5-step roadmap to establish a limited company or limited partnership legally [1], [3]:

  1. Evaluate risk profile and commercial partners: If working with enterprise corporate clients or managing significant contract liabilities, choose a limited company to limit personal liability [3].
  2. Assemble initial founders: Secure at least 2 individuals, establishing share ratios, board authorities, and authorized signatory mandates [1].
  3. Reserve company name and draft documents: Reserve the entity name via the DBD e-Filing portal, preparing the Memorandum of Association (Bor.Or.Jor.2), corporate articles of association, and statutory meeting notices [1], [3].
  4. Issue capital call-up and payment receipts: Convene the statutory meeting, calling up at least 25% of subscribed share capital pursuant to CCC Section 1110 [1], [3], with directors issuing official share payment receipts to all subscribers.
  5. Register with DBD and open a corporate bank account: File final registration with the commercial registrar, taking the DBD company certificate to establish a dedicated corporate bank account to maintain strict separation between personal and business finances [3].

Frequently Asked Questions

What does Co., Ltd. stand for and what is its legal definition?

Co., Ltd. stands for “Company Limited” (limited company). It is a corporate juristic person established under the Civil and Commercial Code with capital divided into equal shares (at least 5 baht per share) held by at least 2 shareholders, whose financial liability is strictly limited to unpaid amounts on their subscribed shares [1], [3]. As an independent juristic person, it holds distinct legal status, rights, obligations, and assets separate from its individual owners.

How many shareholders are currently required to set up a limited company? Can a single person incorporate?

Incorporating a limited company currently requires at least 2 shareholders; single-person incorporation is not permitted under Thai law. This reflects the Civil and Commercial Code Amendment Act (No. 23) B.E. 2565 (2022), which reduced the promoter threshold from 3 to 2 persons [1]. If shareholding later drops to a single shareholder, it serves as statutory grounds for an interested party to petition the court for corporate dissolution under CCC Section 1237 [1].

Do limited companies and limited partnerships pay different tax rates? Which one saves more tax?

Limited companies and limited partnerships are subject to identical corporate income tax rates and calculation formulas; neither holds a legal tax advantage over the other. Both qualify as juristic entities under Section 39 of the Revenue Code. Eligible SMEs (capital up to 5 million baht, gross revenue up to 30 million baht) calculate tax via the same 0% to 20% progressive tiers [2]. Entity selection should hinge on liability containment rather than tax-rate differentials.

If a limited company faces overwhelming debts or bankruptcy, must shareholders and directors pay from personal assets?

Shareholders and directors are not obligated to settle company debts from personal assets, provided shareholders have fully paid up their subscribed capital [3]. Creditors may execute judgments solely against assets owned by the limited company. Exceptions apply only if directors executed personal debt guarantees with creditors or engaged in unlawful conduct such as embezzlement, fraudulent conveyance, or intentional bankruptcy fraud.

Can a limited partnership be converted into a limited company, and how is it done?

Yes, conversions are permitted under Section 1246/1 of the Civil and Commercial Code via corporate transformation [1]. The process entails: 1) securing unanimous consent from all partners; 2) publishing notice in a local publication at least once and notifying all recorded creditors; 3) waiting out the mandatory 30-day creditor objection period; and 4) convening a partners' conversion meeting and filing conversion registration with the DBD within 14 days following the meeting [1], [3].

Conclusion

Whether a limited company (Co., Ltd.) is the right structure for your venture depends fundamentally on contract scale, operational risk, and commercial expansion plans. While a limited partnership offers lower initial audit costs, a limited company provides primary legal defense through limited liability, alongside stronger commercial credibility with banking institutions and enterprise corporate clients.

With corporate income tax rates identical under the Revenue Code, incorporating as a limited company paired with standardized cloud accounting systems offers business owners the most secure, scalable foundation for sustainable commercial growth.

References

  1. Royal Thai Government Gazette. (2022). Civil and Commercial Code Amendment Act (No. 23) B.E. 2565 (2022). https://www.ratchakitcha.soc.go.th/DATA/PDF/2565/A/069/T_0001.PDF
  2. Revenue Department. (2026). Corporate Income Tax Rates and Computation under the Revenue Code and Royal Decrees (No. 530 and No. 583). https://www.rd.go.th/841.html
  3. Department of Business Development (DBD), Ministry of Commerce. (2026). Guidelines and Rules for Limited Company Registration and Obligations under the Accounting Act B.E. 2543 (2000). https://www.dbd.go.th/download/downloads/03_boj/intro_step_bj_establish_1.pdf
  4. Office of the Council of State. (1992). Public Limited Companies Act B.E. 2535 (1992). https://www.krisdika.go.th/

If you are planning a new venture, transitioning from an individual enterprise to a juristic entity, or looking to install cloud accounting systems for growth, contact YMTD Accounting Partner Chiang Mai for professional incorporation and tax planning consultation.
Tel: 081-542-3019
LINE: @premwittawat

Note: This article provides general educational information based on laws and regulations effective as of 6 November 2026, which are subject to future changes. Each business situation involves distinct facts; professional advice should be sought prior to major financial or legal decisions.