Thai Company Co-Founder Agreements: Decisions Before Filing

Write the bargain before choosing document titles

Start with a plain-language decision sheet that both founders can explain consistently. Use “co-founder agreement” or “shareholders’ agreement” as a working label, then have the drafter identify the parties, obligations and documents actually needed. Record what is agreed, what remains open and who may resolve each open point. A document title does not establish that the company, a future shareholder or a counterparty has accepted its terms.

For incorporation, sections 1108 and 1111 of the Civil and Commercial Code distinguish statutory-meeting decisions and registered particulars. The statutory meeting addresses matters including company regulations, promoter contracts and formation expenses, and appointment and powers of the first directors. Section 1111 covers registration particulars, including directors whose signatures bind the company, and depositing any company regulations. Do not treat a separate private agreement as a substitute for those corporate steps.

The practical output is one agreed commercial position , translated into the appropriate documents. Keep the formation particulars consistent with that position as part of company registration in Thailand ; signing a private agreement alone is not evidence that the incorporation records reflect the bargain.

Agree which commitments are intended to operate between the founders immediately and which depend on the company being formed and taking a further action. Identify the intended company obligations separately for legal drafting. The statutory provisions cited here were checked in Department of Business Development (DBD) materials on September 8, 2026; the commercial planning suggestions are recommendations, not statutory clauses.

Allocate contributions and unfinished work

Describe each contribution by its substance: cash for shares, a proposed founder loan, an asset, permission to use an asset, or future work. For planning, give each a contributor, recipient, amount or description, delivery condition and evidence of completion. Avoid a single “investment” figure that conceals several different promises.

If a founder supplies software, branding or a customer-facing domain, list what already exists and who currently owns or controls it. Decide whether the proposed company should own it or receive permission to use it. Specify the intended scope, handover materials and who will prepare the relevant contract. Access to an account is useful operational evidence, but should not be treated as a substitute for resolving ownership.

Future work needs measurable expectations: a deliverable, an acceptance method and a response if delivery falls short. Separate those commercial expectations from the shares recorded at formation. Under section 1108 , the statutory meeting addresses shares treated as paid otherwise than in money and the stated consideration. That provision is a reason to obtain a specific assessment before treating a promise of later services as paid share capital.

Hypothetical planning example: one founder contributes launch cash and another promises a product prototype. They should decide what counts as a usable prototype, who accepts it, and what happens if the agreed milestone is missed. They should not merely write “equal contribution.” Any proposed adjustment to shares or payments then needs a lawful mechanism, suitable documents and an achievable source of funds.

Also assign responsibility for pre-incorporation spending. Keep receipts, identify who contracted, and distinguish an agreed reimbursement proposal from an expense the company has actually approved. This prevents an unexplained personal expenditure from becoming an assumed company obligation.

Give each promise a document and an owner

Use the following matrix as a negotiation worksheet. The second column captures the commercial choice; the third identifies implementation work to discuss with the drafter. It is not a universal filing checklist. Add an owner and a completion date to the rows that apply to your founders.

The legal basis for using more than one record is concrete. Sections 1111, 1129 and 1138–1139 address registered particulars, named-share transfers and the company’s shareholder register. A shareholder-list copy submitted to the registrar is a distinct record from that register. Ask which record demonstrates the particular event, rather than marking the entire row complete because one document was signed.

Add a “mismatch” note whenever a proposed clause and a corporate document point in different directions. For example, “both founders approve major contracts” needs a separate answer to “who can sign for the company?” Keep the promise and its implementation evidence together. The two checks become especially useful when a transaction must proceed quickly.

Separate an approval promise from power to sign

Choose the transactions that deserve additional internal approval, then define them precisely. Possible commercial categories include borrowing, related-party contracts, disposing of a key asset and commitments outside an approved operating plan. Specify how approval is requested, what information accompanies the request, and how the decision is recorded. A phrase such as “important decisions” leaves too much to interpretation.

The distinction between share ownership and director powers matters when implementing those controls. Section 1144 places company management with directors in accordance with company regulations and under shareholder-meeting control. Section 1167 applies agency provisions to relations among directors, the company and third persons. An internal consent promise should therefore not be treated as a guaranteed defence against a counterparty; the effect of a particular transaction requires its own legal assessment.

Check the intended control against registered signing authority before filing. Joint signatures may reflect the founders’ intended check, but create a practical question when a signatory is unavailable. Decide how routine work can continue without creating an informal workaround that contradicts the formal authority.

Later changes also need the right corporate decision. The DBD director-authority change manual says that changing authority requires a shareholder-meeting resolution unless the company regulations empower the board to decide it. Agreeing privately to change authority is therefore only the beginning of the implementation work; do not assume every director or authority change follows an identical approval path.

Test a disagreement before it becomes a deadlock

Define deadlock around a decision the business needs, not simply a disagreement between personalities. A useful commercial procedure identifies the blocked matter, requires a written statement of the competing positions, and sets an escalation route. Agree what the company should keep doing while the dispute is unresolved, subject to the necessary authority and legal obligations.

Thai company formation law recognises this issue. Section 1108(1) says that company regulations should specify methods for resolving unresolved problems or disagreements among directors or shareholders. That wording supports addressing deadlock at formation; it does not establish that any chosen compulsory sale, penalty or other remedy will be valid.

Hypothetical planning example: two founders cannot agree whether to renew an essential supplier contract. Their procedure could require a short written comparison of renewal and replacement, discussion with a named neutral adviser, and a further founder meeting. They should decide beforehand whether any temporary commitment is permitted, who can approve and sign it, and what happens if neither option wins agreement. These are proposed commercial terms, not statutory deadlines or voting thresholds.

Run the procedure against three questions: can one founder prevent the meeting from happening; can the business continue necessary work during escalation; and is the last-resort outcome financially realistic? A purchase option may be useless if the intended purchaser cannot fund it. Ask the drafter to assess the lawful mechanism before treating a forced exit as a complete deadlock solution.

Design an exit that somebody can actually complete

For a departure, agree the trigger, potential purchaser, valuation method, payment terms and operational handover. Differentiate voluntary departure, long-term inability to contribute and an alleged serious breach. Define how disputed facts are determined before a consequence is applied. These distinctions help the drafter assess the proposed terms without importing an unfamiliar template’s assumptions.

Do not make the private company the assumed buyer. Section 1143 prohibits a company limited from owning its own shares or taking them in pledge. A clause casually promising that “the company buys the departing founder out” therefore needs to be reconsidered. Identify a proposed lawful purchaser and have the transaction structure reviewed before relying on the exit arrangement.

A price agreement also does not complete a share transfer. For the named shares addressed by section 1129 , the transfer instrument must be in writing, signed by transferor and transferee, attested by at least one witness, and identify the share numbers. Effectiveness against the company or outsiders requires entry of the transfer and transferee’s name and address in the shareholder register. The section also allows relevant transfer restrictions in company regulations.

Keep a proposed transfer separate from the departure’s other work: director or authority changes, return of company materials, account access and continuing contractual obligations. Specify completion evidence for each action . If a transfer cannot proceed, the founders should know which obligations remain unresolved instead of assuming that payment or resignation settled everything.

Resolve the founder bargain in the right order

Before approving the filing particulars, settle contributions and the rights expected in return. Then align transaction approvals with company authority, and test the disagreement and departure arrangements against practical events. Give the drafter the decision sheet, supporting asset and payment information, and a clear list of intended company obligations.

Leave an item open where its legal mechanism or evidence is unresolved. A proposed company repurchase, unclear rights to a core asset or a control that conflicts with signing authority deserves resolution before founders rely on it. For every material agreed term, the final question is concrete: who acts, through which document or decision, and what evidence will show that the action happened?