How to Build Financial Projections for a Pre-IPO Company: Revenue Model and Margin Assumptions

The window for a successful Hong Kong IPO in 2025-2026 is narrower than at any point since the 2022 rate-hike cycle began, and the primary gatekeeper is no longer the market’s appetite for growth but the sponsor’s ability to defend a revenue model under the SFC’s enhanced prospectus review. Since the Securities and Futures Commission (SFC) published its revised Code of Conduct for Persons Licensed by or Registered with the Securities and Futures Commission (the Code) in October 2024, specifically the updated paragraph 17 on sponsor due diligence, the regulator has demanded a material step-up in the granularity of financial projections filed in Form A1. The SFC’s 2024-25 annual report, released in June 2025, noted that 38% of all post-A1 deficiency letters issued in the first half of 2025 related to inadequate revenue recognition models or unsupported margin assumptions. For a Pre-IPO company targeting a Main Board listing with a market capitalisation above HKD 4 billion, the financial model is no longer a planning tool—it is the single most auditable document in the sponsor’s working papers. A model built on flawed revenue drivers or margin benchmarks will not survive the SFC’s desk review, and a failed A1 resubmission cycle can delay the listing timetable by six to nine months, during which a company’s valuation multiple may compress by 200-400 bps against its peer group.

The Revenue Model: Structural Alignment with HKEX Listing Rule 11.06

Identifying the Primary Revenue Driver Under HKEX Guidance

The SFC and HKEX do not require a forecast in the prospectus, but they do require a detailed financial projection in the sponsor’s due diligence report, which forms the basis for the profit forecast if one is included. Under HKEX Listing Rule 11.06, a listing applicant must demonstrate a sufficient level of management control and a sustainable business model. The financial projection must therefore align the revenue model with the company’s historical trading records filed under Chapter 4 of the Main Board Listing Rules.

A Pre-IPO company in the SaaS or platform economy sector must disaggregate its revenue into at least three identifiable streams: subscription, transaction-based, and one-time implementation or hardware fees. For a biotech listing under Chapter 18A, the revenue model must be replaced with a detailed R&D expenditure model and a projected path to commercialisation, but the same structural discipline applies. The sponsor must map each revenue stream to a specific contractual instrument—a master services agreement, a license deed, or a distribution agreement—and show that the revenue recognition policy under HKFRS 15 (Revenue from Contracts with Customers) is consistent across the historical period and the projection period.

Volume, Price, and Cohort Dynamics

The revenue projection must be built from the unit level upward, not from a top-down market share assumption. The SFC’s 2024 thematic inspection of sponsor work on revenue models found that 62% of rejected projections relied on a single-variable linear extrapolation of historical growth rates, which the regulator deemed insufficient (SFC, Thematic Inspection Report on Sponsor Due Diligence for Revenue Models, December 2024).

A defensible model uses a cohort-based approach. For a subscription business, the projection must segment customers by acquisition cohort (e.g., 2022 cohort, 2023 cohort) and apply a retention curve derived from at least 24 months of actual churn data. The price assumption must be locked to a published price list that has been in effect for at least six months prior to the A1 filing. Any assumption of price increases must be supported by a written customer contract or a board-approved pricing policy that has been communicated to the market. Volume assumptions must be cross-referenced to the company’s sales pipeline, which the sponsor must verify through independent customer calls, with a minimum sample size of 70% of projected revenue for the first forecast year.

Geographic and Segment Allocation

Hong Kong-listed companies with cross-border operations must allocate revenue by jurisdiction, not by group entity. Under HKEX Listing Rule 19A.06, a PRC-incorporated issuer must demonstrate that its revenue generation is not dependent on a single geographic market to the extent that a material adverse change would threaten its listing viability. The projection must therefore include a geographic revenue split by country, with each country’s revenue growth rate capped at the IMF’s latest GDP growth forecast for that jurisdiction, plus a maximum premium of 200 bps, unless the company can demonstrate a structural growth advantage through signed contracts.

For a company with a BVI holding company, a Hong Kong operating subsidiary, and a PRC WFOE under a VIE structure, the revenue must be traced to the legal entity that holds the relevant operating licence. The SFC has, since early 2025, required sponsors to confirm that the revenue model does not assume revenue recognition in a jurisdiction where the operating entity does not hold a valid business licence or where the VIE agreement has not been notarised and registered with the PRC Ministry of Commerce.

Margin Assumptions: Building a Defensible Cost Structure

Gross Margin: The Sponsor’s Benchmarking Obligation

The gross margin assumption is the most heavily scrutinised line item in any Pre-IPO financial model. The SFC’s 2024 Code of Conduct paragraph 17.3(d) explicitly requires the sponsor to “evaluate the reasonableness of key assumptions in the financial projections, including but not limited to gross profit margins, by reference to industry comparables and the issuer’s historical performance.”

A sponsor must compile a peer group of at least five comparable listed companies on the Hong Kong Main Board, the Shanghai STAR Market, or the Nasdaq, and benchmark the issuer’s projected gross margin against the peer group’s median and interquartile range. If the issuer’s projected margin exceeds the peer group median by more than 500 bps, the sponsor must provide a written justification supported by a third-party industry report—a McKinsey or Frost & Sullivan report, for example, not a proprietary management estimate. If the margin is below the peer group median, the sponsor must explain the structural disadvantage and confirm that the margin is not a result of under-costing or transfer pricing irregularities.

The cost of goods sold (COGS) must be broken into at least three sub-categories: direct materials, direct labour, and allocated overhead. For a manufacturing Pre-IPO company, the direct materials assumption must be linked to a commodity price forecast from a recognised source such as the World Bank’s Commodity Markets Outlook or the IMF’s Primary Commodity Price System. The labour cost assumption must factor in the Hong Kong Minimum Wage Ordinance (Cap. 608) for local operations and the relevant provincial minimum wage regulations for PRC operations, with an annual escalation of at least 5% per annum unless the company has a collective bargaining agreement that caps increases.

Operating Expenses: The SFC’s Stance on Capitalisation

Operating expense assumptions are where many Pre-IPO models fail the sponsor’s internal review. The SFC has flagged, in its 2025 Guidance Note on Financial Projections in Listing Applications, that sponsors must not capitalise expenses that do not meet the recognition criteria under HKAS 38 (Intangible Assets). In practice, this means that software development costs, marketing spend, and employee training costs must be expensed unless the company can demonstrate that the expenditure creates a separately identifiable intangible asset with a measurable future economic benefit.

For a Pre-IPO technology company, the SFC expects the sales and marketing expense ratio to decline over the projection period, but not by more than 10% per annum, unless the company has a signed contract that guarantees a reduction in customer acquisition cost. The general and administrative expense ratio should remain flat or decline by no more than 5% per annum, reflecting the fixed-cost nature of corporate overhead. Any assumption of operating leverage must be supported by a headcount plan that shows the number of full-time equivalents per department, with salary assumptions benchmarked to the Hong Kong Census and Statistics Department’s Annual Earnings and Hours Survey or the relevant PRC data.

EBITDA and Cash Flow: The Bridge to Valuation

The margin assumptions ultimately feed into the EBITDA projection, which is the primary input for the valuation model used in the placing price negotiation. The HKEX requires that any profit forecast included in the prospectus be reported on by the reporting accountants under HKSA 800 (Special Considerations—Audits of Financial Statements Prepared in Accordance with Special Purpose Frameworks). The sponsor must therefore ensure that the EBITDA margin assumption is consistent with the cash flow statement, specifically that depreciation and amortisation are calculated using the useful lives disclosed in the historical financial statements.

A common error in Pre-IPO models is assuming a straight-line improvement in EBITDA margin without modelling the working capital cycle. The SFC’s 2025 guidance explicitly requires a working capital sensitivity analysis, showing the impact of a 30-day extension in trade receivables days and a 30-day compression in trade payables days on the company’s cash runway. For a company with a PRC operating entity, the cash flow projection must also include a dividend upstreaming schedule from the WFOE to the Hong Kong holding company, factoring in the PRC withholding tax rate of 5% or 10% under the double tax treaty arrangement between the PRC and Hong Kong.

Scenario Analysis and Sensitivity: The HKEX’s Implicit Requirement

Base, Upside, and Downside Cases

While the HKEX Listing Rules do not mandate scenario analysis in the financial projection, the SFC’s Code of Conduct paragraph 17.3(e) requires the sponsor to “assess the sensitivity of the financial projections to changes in key assumptions.” In practice, this means the sponsor must present at least three scenarios in the due diligence report: a base case that aligns with the management’s budget, an upside case that assumes a 10% improvement in revenue volume and a 200 bps improvement in gross margin, and a downside case that assumes a 10% decline in revenue volume and a 200 bps decline in gross margin.

The downside case is the most important for the sponsor’s liability management. If the company’s actual performance in the first two post-listing quarters falls below the downside case, the sponsor may face a regulatory inquiry or a civil claim from investors under the Securities and Futures Ordinance (Cap. 571), section 108, which imposes liability for misleading statements in a prospectus. The sponsor must therefore ensure that the downside case does not trigger a breach of any financial covenants in the company’s existing debt facilities, as this would constitute a material adverse change that must be disclosed in the prospectus.

Monte Carlo Simulation vs. Deterministic Modelling

The SFC does not prescribe a specific modelling methodology, but the trend since 2024 has been toward probabilistic modelling. A deterministic model that assumes a single point estimate for each variable is no longer considered best practice. The sponsor should, at a minimum, run a Monte Carlo simulation with 10,000 iterations, varying the revenue growth rate, gross margin, and operating expense ratio within a normal distribution defined by the historical volatility of each variable.

The output of the simulation should be a probability distribution of the projected net profit, with the sponsor identifying the 5th, 25th, 50th, 75th, and 95th percentiles. If the 5th percentile net profit is negative, the sponsor must include a warning in the due diligence report and discuss with the listing committee whether a profit forecast is appropriate. The HKEX has, in 2025, rejected at least two A1 applications where the sponsor’s deterministic model showed a profit but the Monte Carlo simulation showed a 15-20% probability of a loss.

Stress Testing for Regulatory and Geopolitical Risk

For a Pre-IPO company with significant PRC exposure, the financial model must include a stress test for regulatory risk. The SFC’s 2025 Guidance Note specifically mentions the need to model the impact of a change in the PRC’s data security laws or a revocation of a VIE agreement. The stress test should assume a 50% reduction in revenue from the PRC market for a period of 12 months, with a corresponding reduction in operating expenses of only 20%, reflecting the fixed-cost nature of the business.

The sponsor must also model the impact of a change in the Hong Kong interest rate environment. The HKMA’s 2025 Monetary Policy Statement indicated that the Base Rate would remain at 5.00% through the end of 2025, but the financial projection should include a scenario where the Base Rate rises to 6.00% and the HIBOR follows suit, increasing the company’s interest expense on any Hong Kong dollar-denominated debt by 200 bps. For a company with a significant offshore debt structure in the Cayman Islands or Bermuda, the projection must also factor in the cost of any interest rate hedging instruments.

Practical Execution: From Model to A1 Filing

The Sponsor’s Working Paper Trail

The financial projection is not a standalone document; it is the centrepiece of the sponsor’s working papers, which must be retained for at least seven years after the listing under the SFC’s Code of Conduct paragraph 17.7. Every assumption in the model must be traceable to a source document: a signed customer contract, a board resolution, a third-party industry report, or a government publication. The sponsor’s working papers must include a detailed assumption log, with each assumption numbered, described, and cross-referenced to the source document and the relevant section of the model.

The SFC’s 2024 thematic inspection found that 45% of sponsors failed to maintain an adequate assumption log, leading to deficiency letters that delayed the A1 review by an average of 12 weeks. The assumption log must be updated at every A1 resubmission, with any changes highlighted and explained. The sponsor’s compliance officer must sign off on the assumption log before the A1 is filed.

The Role of the Reporting Accountants

The reporting accountants, typically one of the Big Four firms, play a critical role in validating the financial projection. Under HKSA 800, the accountants must issue a report on the profit forecast if one is included in the prospectus. The accountants will typically require the sponsor to provide a sensitivity analysis and a working capital memorandum, and they will test the model’s internal consistency by tracing every formula to its source data.

The accountants will also perform a backward-looking test, comparing the company’s actual performance in the most recent completed quarter against the projection that was made for that quarter in the sponsor’s earlier drafts. If the actual performance deviates from the projection by more than 10%, the accountants will require the sponsor to revise the forward-looking assumptions and provide a written explanation for the deviation. This iterative process can take three to six months, which is why the financial model must be built at least nine months before the intended A1 filing date.

Common Pitfalls and Regulatory Red Flags

The SFC’s 2025 Enforcement Report identified three recurring issues in Pre-IPO financial projections that led to enforcement actions against sponsors. First, the use of a “smoothing” assumption that averages historical revenue growth over a period that includes a one-time event, such as a large contract win, without disclosing the event’s non-recurring nature. Second, the assumption of a gross margin improvement without a corresponding reduction in COGS or a price increase supported by a contract. Third, the failure to model the impact of a change in the company’s tax status, such as the expiration of a PRC High and New Technology Enterprise (HNTE) tax holiday, which reduces the net profit margin by 5-10 percentage points.

A Pre-IPO company that has received a deficiency letter on its financial projection should not simply revise the numbers upward. The SFC’s review team has access to industry data and will compare the revised projection against the peer group benchmark. A revision that moves the projection closer to the peer group median is acceptable; a revision that moves it further away will trigger a second deficiency letter and a referral to the SFC’s enforcement division.

Actionable Takeaways

1. Build the revenue model from the unit level using a cohort-based retention curve derived from at least 24 months of actual churn data, and lock every price assumption to a published price list that has been in effect for six months prior to the A1 filing.
2. Benchmark every margin assumption against a peer group of at least five comparable Hong Kong Main Board, STAR Market, or Nasdaq-listed companies, and provide a written justification for any deviation exceeding 500 bps from the peer group median.
3. Run a Monte Carlo simulation with 10,000 iterations and present the 5th, 25th, 50th, 75th, and 95th percentile outcomes in the sponsor’s due diligence report, with a specific warning if the 5th percentile net profit is negative.
4. Maintain a detailed assumption log cross-referenced to source documents, updated at every A1 resubmission, and signed off by the sponsor’s compliance officer before filing.
5. Begin the financial projection build at least nine months before the intended A1 filing date to allow for three to six months of iterative review by the reporting accountants and the SFC’s desk reviewers.