Accelerator Investment Terms Deconstructed: SAFE, Convertible Notes, or Direct Equity for Your Startup

The Hong Kong Monetary Authority (HKMA) and the Securities and Futures Commission (SFC) jointly issued a circular in December 2024 that tightened the regulatory perimeter around digital asset investments by licensed banks and intermediaries, explicitly requiring that any structured product—including convertible instruments linked to startup valuations—must adhere to the SFC’s Code of Conduct for Persons Licensed by or Registered with the SFC (Chapter 571). This shift, combined with the HKEX’s ongoing review of Chapter 18C for specialist technology companies, has made the choice between a SAFE, a convertible note, and direct equity more than a tactical fundraising decision. For a pre-Series B startup based in Hong Kong or Singapore, the instrument selected now determines not only dilution but also the feasibility of a future Main Board listing under Rule 18C.03, which demands a minimum market capitalisation of HKD 6 billion at listing for pre-revenue companies. Founders must understand that accelerator-stage terms are no longer a back-office detail; they are a structural commitment that will be scrutinised by sponsors, auditors, and the SFC during any subsequent IPO vetting process. This article deconstructs the three primary investment instruments used by accelerators in Asia—SAFEs, convertible notes, and direct equity—with specific reference to Hong Kong’s legal and regulatory framework, and provides a decision framework for founders evaluating term sheets in 2025.

SAFE Agreements: The Mechanics and the Hong Kong Legal Gap

The Simple Agreement for Future Equity (SAFE), popularised by Y Combinator in 2013, is a contractual right to receive equity upon a future priced round, a liquidity event, or a dissolution. Unlike a convertible note, a SAFE carries no maturity date and accrues no interest. In the Hong Kong context, this creates a specific legal ambiguity: a SAFE is not a debt instrument under the Companies Ordinance (Cap. 622), nor is it a share under the Listing Rules. The SFC’s 2023 guidance on “digital tokens and security tokens” (circular dated 2 November 2023) explicitly excluded SAFEs from the definition of “securities” under the Securities and Futures Ordinance (Cap. 571), unless the SAFE is structured with a right to receive a fixed amount of money. Most accelerator SAFEs do not meet this threshold, meaning they fall into a regulatory grey zone where no prospectus is required, but no investor protection applies either.

Valuation Cap vs. Discount Rate: Which Protects the Founder

A standard Y Combinator SAFE uses either a valuation cap, a discount rate, or both. For a Hong Kong startup targeting a Series A at a pre-money valuation of HKD 50 million, a SAFE with a HKD 30 million cap means the accelerator’s investment converts at the lower of the cap or the Series A price. Data from the Hong Kong Science and Technology Parks Corporation (HKSTP) 2024 cohort survey indicates that 68% of its portfolio companies used SAFEs with valuation caps averaging HKD 25 million. The discount rate, typically 15% to 25%, provides a simpler mechanism but can lead to higher dilution if the Series A valuation is lower than anticipated. Founders should model both scenarios: a 20% discount on a HKD 50 million round yields an effective price of HKD 40 million, whereas a HKD 30 million cap on the same round yields a conversion price of HKD 30 million—a 40% effective discount. The cap clearly favours the investor in high-growth scenarios but protects the founder if the round is flat.

The “Most Favoured Nation” Clause and Its Implications

Many SAFE templates include a Most Favoured Nation (MFN) clause, allowing the investor to adopt terms from any subsequent SAFE issued within a specified period, typically 12 months. For a startup raising multiple accelerator tranches—for example, HKD 500,000 from an accelerator in January and another HKD 1 million from a different programme in June—the MFN clause can retroactively reset the first investor’s terms. This creates a compounding effect on dilution. The SFC’s Code of Conduct for Corporate Finance Advisers (paragraph 5.3) requires that any material change to the terms of an investment must be disclosed to all existing investors. While a SAFE is not a regulated instrument, the principle of fair disclosure applies under common law in Hong Kong. Founders should cap the MFN period to 6 months or exclude it entirely if the accelerator is providing non-financial value such as mentorship or network access.

Convertible Notes: The Traditional Hybrid with Maturity Risk

Convertible notes are debt instruments that convert into equity at a future round, typically carrying a maturity date of 18 to 36 months and an interest rate of 5% to 8% per annum. In Hong Kong, a convertible note issued to an accelerator is a “debenture” under the Companies Ordinance (Cap. 622, Section 2), which means it must be registered with the Companies Registry if it is issued to more than 50 persons or if the aggregate principal exceeds HKD 5 million. Most accelerator notes fall below this threshold, but the legal classification matters for insolvency scenarios. If the startup fails before conversion, the note holder ranks as an unsecured creditor, junior to secured lenders but senior to equity holders. This is a critical distinction from a SAFE, which ranks pari passu with common equity in a liquidation.

Interest Accrual and Conversion Mechanics

A typical convertible note from a Hong Kong accelerator carries an interest rate of 6% per annum, compounding annually. On a HKD 1 million note with a 24-month maturity and a conversion at a HKD 40 million valuation cap, the accrued interest of HKD 123,600 converts into equity at the same cap, increasing the investor’s stake by 0.31% assuming a HKD 10 million Series A. The interest is a cost to the startup that is not deductible for profits tax purposes under the Inland Revenue Ordinance (Cap. 112, Section 16) unless the note is used to finance the production of chargeable profits—a test most pre-revenue startups fail. Founders should push for a simple interest calculation rather than compounding, and negotiate a conversion discount on the principal only, not on the accrued interest.

Maturity and the Risk of Forced Conversion or Default

The maturity date is the single most dangerous clause in a convertible note. If the startup has not raised a priced round by maturity, the note holder can demand repayment in cash. For a pre-revenue startup with no cash reserves, this can trigger a default under the note’s terms, leading to acceleration of the entire principal plus interest. The HKMA’s 2024 Supervisory Policy Manual on credit risk (CA-G-1) does not apply to unregulated accelerators, but the principle of “ability to repay” is relevant. Data from the Hong Kong Venture Capital and Private Equity Association (HKVCA) 2024 annual report shows that 12% of convertible notes issued to Hong Kong accelerators in the 2020-2022 vintage resulted in a conversion event triggered by maturity rather than a priced round, often at a valuation determined by an independent valuer—a costly and unpredictable process. Founders should include an automatic conversion mechanism at maturity based on a pre-agreed valuation formula, such as a 1.5x multiple of the last SAFE cap, to avoid a cash repayment scenario.

Direct Equity: Simplicity with Immediate Dilution

Direct equity involves the accelerator purchasing ordinary or preference shares in the startup at a fixed valuation. For a Hong Kong-incorporated startup, this requires a board resolution, an amended articles of association, and a filing with the Companies Registry within 1 month of allotment (Cap. 622, Section 135). The SFC’s Code on Takeovers and Mergers (Chapter 571) does not apply to minority investments below 30%, so no mandatory offer is triggered. The primary advantage is clarity: the accelerator holds a defined percentage of the company from day one, with no conversion mechanics or maturity risks.

Valuation Methodologies for Pre-Revenue Startups

Accelerators using direct equity typically apply a fixed valuation based on a multiple of the team’s experience, the market size, or a comparable transaction. The Hong Kong Science Park’s Co-Investment Programme, for example, uses a standardised valuation of HKD 10 million to HKD 20 million for its seed-stage investments, depending on the technology readiness level. For a startup with no revenue, the valuation is often set by the accelerator’s internal investment committee using a scorecard method weighted 30% on team quality, 25% on market opportunity, 20% on product, 15% on competitive landscape, and 10% on legal and IP status. This is less flexible than a SAFE or convertible note, which defer valuation to a later round when more information is available.

Preference Rights and Anti-Dilution Provisions

Direct equity investments often come with liquidation preferences, anti-dilution protection, and board observation rights. A 1x non-participating liquidation preference is standard, meaning the accelerator gets its investment back before common shareholders in a sale. For a startup raising HKD 2 million at a HKD 20 million pre-money valuation, the accelerator holds 9.09% of the company. If the company is sold for HKD 15 million, the accelerator receives HKD 2 million first, leaving HKD 13 million for the common shareholders. Anti-dilution provisions, typically weighted average or full ratchet, adjust the accelerator’s conversion price if the company issues shares at a lower price in a future round. Full ratchet is punitive and should be avoided; weighted average is standard in Hong Kong venture deals. The SFC’s Code of Conduct for Corporate Finance Advisers (paragraph 6.2) requires that any anti-dilution provision be disclosed in the investment agreement and explained to the issuer, but this applies only to regulated advisers, not to accelerators.

Decision Framework: Matching Instrument to Stage and Jurisdiction

The choice between SAFE, convertible note, and direct equity depends on the startup’s stage, the accelerator’s value-add, and the intended listing venue. For a pre-seed startup in Hong Kong targeting a future HKEX Main Board listing under Chapter 18C, a SAFE with a valuation cap and no maturity date is the most flexible option, as it avoids the debt classification issues that could complicate the sponsor’s due diligence on financial instruments under HKFRS 9. For a startup in Singapore or Taiwan, where the regulatory environment for convertible instruments is more defined, a convertible note with a 24-month maturity and a 20% discount may be preferable, as it provides a clear conversion mechanism and interest income for the accelerator. Direct equity is best suited for startups that have already achieved product-market fit and can justify a fixed valuation, or for accelerators that require a board seat to provide active governance.

Jurisdictional Nuances: Hong Kong, Singapore, and Taiwan

In Hong Kong, the Companies Ordinance requires that any allotment of shares be approved by the board and filed within 1 month. For a SAFE, no filing is required, but the startup must ensure that the conversion does not breach the authorised share capital. In Singapore, the Accounting and Corporate Regulatory Authority (ACRA) requires convertible notes to be disclosed as liabilities in the financial statements, which can affect the startup’s debt-to-equity ratio and its ability to secure bank financing. In Taiwan, the Company Act (Article 248) requires that convertible bonds be approved by the competent authority if issued to more than 35 persons, making SAFEs more practical for accelerator-stage investments. Founders should engage a local counsel in each jurisdiction to confirm the filing requirements and tax implications.

Dilution Modelling: A Comparative Example

Assume a Hong Kong startup raises HKD 2 million from an accelerator at a pre-money valuation of HKD 20 million. Under a SAFE with a HKD 15 million cap, the accelerator converts at an effective valuation of HKD 15 million, receiving 13.33% of the company post-Series A (assuming a HKD 10 million Series A at HKD 30 million pre-money). Under a convertible note with a 20% discount and 6% interest, the accelerator receives HKD 2.12 million worth of equity at a HKD 24 million effective price, yielding 8.83%. Under direct equity, the accelerator receives 9.09% immediately, with no future dilution adjustment. The SAFE gives the accelerator the highest ownership at the Series A stage, but the founder retains full control until conversion. The direct equity gives the accelerator immediate ownership but locks the valuation, which may be disadvantageous if the company grows faster than expected.

Closing Takeaways

1. For pre-revenue startups in Hong Kong, a SAFE with a valuation cap and no maturity date is the most regulatorily neutral instrument, as it avoids debt classification under HKFRS 9 and does not require Companies Registry filing.
2. Convertible notes should only be used if the accelerator can provide a clear path to a priced round within 18 months, and the note must include an automatic conversion mechanism at maturity to avoid cash repayment risk.
3. Direct equity is the simplest instrument but requires a fixed valuation, which should be supported by a scorecard methodology or a comparable transaction analysis to withstand future sponsor due diligence.
4. Founders must engage a Hong Kong solicitor to review the investment agreement for anti-dilution provisions, MFN clauses, and liquidation preferences, as these terms are not standardised and can significantly alter dilution outcomes.
5. If the startup intends to list on the HKEX Main Board under Chapter 18C, any convertible instrument must be structured to avoid being classified as a “debt security” under the Listing Rules, which would trigger additional disclosure requirements and sponsor liability.