OptimaBank — Appendices
Supporting appendices — the detailed assumptions and methodology and glossary, the detailed financial schedules, and the key investment considerations underpinning the OptimaBank business plan and financial model.
Section 17 · Business Plan
Appendices
Supporting appendices — the detailed assumptions and methodology and glossary, the detailed financial schedules, and the key investment considerations underpinning the OptimaBank business plan and financial model.
Appendix A: Detailed Assumptions & Methodology
A.1 Modelling Approach
The financial model is constructed bottom-up on a fully integrated
basis, such that the income statement, balance sheet and cash-flow
statement are internally consistent and the balance sheet reconciles
exactly in every period. Customer numbers drive deposit volumes;
deposits and the target loan-to-deposit ratio drive the lending book;
the lending book and net interest margin drive net interest income; and
fee ratios, cost ratios and credit-loss ratios complete the operating
model. Capital is sized to maintain regulatory ratios above SARB
minima.
A.2 Principal Assumptions
- Customer base grows from approximately 0.85 million in Year 1 to
10.5 million by Year 5, consistent with the demonstrated acquisition
rates of successful South African digital banks. - The loan-to-deposit ratio rises from approximately 50% to 81% as
the bank deploys its deposit base into lending. - Net interest margin expands from 4.8% to 5.4% as the asset mix
optimises. - Non-interest revenue grows from approximately 62% to 82% of net
interest income as fee franchises mature. - The cost-to-income ratio falls from over 100% during the
investment phase to approximately 49% at maturity. - Credit losses normalise from 3.2% to 1.5% of gross loans as the
portfolio diversifies and underwriting matures. - Corporate tax is applied at the South African statutory rate of
27%, with no deferred-tax asset recognised on early losses for
prudence.
A.3 Data Sources
Industry and market statistics are drawn from publicly available
sources including the South African Reserve Bank (sector balance-sheet
and prudential data), the National Credit Regulator (credit-active
consumer data), FinScope / FinMark Trust and the World Bank Global
Findex (financial-inclusion data), PwC Major Banks Analysis, and public
disclosures of listed and digital banks. These sources are believed to
be reliable but have not been independently verified by the Company.
A.4 Glossary
| Term | Definition |
|---|---|
| CET1 | Common Equity Tier 1 capital ratio — highest-quality regulatory capital over risk-weighted assets |
| CAR | Capital Adequacy Ratio — total qualifying capital over risk-weighted assets |
| NII | Net Interest Income — interest earned less interest paid |
| NIR | Non-Interest Revenue — fees, commissions, trading and insurance income |
| NIM | Net Interest Margin — NII as a percentage of average interest-earning assets |
| LCR / NSFR | Liquidity Coverage Ratio / Net Stable Funding Ratio — Basel III liquidity metrics |
| RWA | Risk-Weighted Assets — assets weighted by regulatory risk factors |
| ROE / ROA | Return on Equity / Return on Assets |
| SARB | South African Reserve Bank — the central bank and prudential regulator |
| SADC | Southern African Development Community |
Appendix B: Detailed Financial Schedules
B.1 Income Statement Drivers
The schedule below sets out the underlying revenue and cost drivers
feeding the projected income statement.
| Driver (ZAR m unless %) | Year 1 | Year 2 | Year 3 | Year 4 | Year 5 |
|---|---|---|---|---|---|
| Avg interest-earning assets | 9,838 | 29,638 | 63,500 | 112,800 | 180,000 |
| Net interest margin (%) | 4.8% | 5.1% | 5.3% | 5.4% | 5.4% |
| Net interest income | 472 | 1,512 | 3,366 | 6,091 | 9,720 |
| Non-interest revenue ratio (% of NII) | 62% | 68% | 74% | 78% | 82% |
| Non-interest revenue | 293 | 1,028 | 2,491 | 4,751 | 7,970 |
| Total operating income | 765 | 2,540 | 5,857 | 10,842 | 17,690 |
| Cost-to-income (%) | 128% | 92% | 64% | 54% | 49% |
| Operating expenses | 979 | 2,337 | 3,748 | 5,855 | 8,668 |
| Credit loss ratio (%) | 3.2% | 2.8% | 2.2% | 1.8% | 1.5% |
| Credit impairments | 294 | 770 | 1,188 | 1,728 | 2,280 |
B.2 Balance-Sheet Drivers
The schedule below sets out the balance-sheet drivers and the
resulting capital position.
| Driver (ZAR m unless %) | Year 1 | Year 2 | Year 3 | Year 4 | Year 5 |
|---|---|---|---|---|---|
| Customer deposits | 18,500 | 46,000 | 84,000 | 132,000 | 188,000 |
| Loan-to-deposit ratio (%) | 49.7% | 59.8% | 64.3% | 72.7% | 80.9% |
| Gross loans & advances | 9,200 | 27,500 | 54,000 | 96,000 | 152,000 |
| Expected credit loss stock | 412 | 1,078 | 1,663 | 2,419 | 3,192 |
| Net loans & advances | 8,788 | 26,422 | 52,337 | 93,581 | 148,808 |
| Liquid assets / securities | 6,475 | 16,100 | 29,400 | 46,200 | 65,800 |
| Risk-weighted assets | 12,234 | 32,261 | 61,260 | 105,872 | 164,648 |
| Total qualifying capital | 6,942 | 8,075 | 12,297 | 20,176 | 31,698 |
| Total capital adequacy ratio (%) | 56.7% | 25% | 20.1% | 19.1% | 19.3% |
| CET1 ratio (%) | 41.6% | 15.9% | 12.4% | 12.3% | 13.1% |
B.3 Capital & Funding Phasing
Paid-in capital is built in tranches aligned with milestone
achievement, supplemented by retained earnings as the bank turns
profitable. The cumulative position is shown below.
| ZAR m | Year 1 | Year 2 | Year 3 | Year 4 | Year 5 |
|---|---|---|---|---|---|
| Paid-in capital (cumulative) | 6,800 | 7,400 | 9,200 | 12,200 | 15,800 |
| Incremental capital raised | 6,800 | 600 | 1,800 | 3,000 | 3,600 |
| Retained earnings (cumulative) | (508) | (1,075) | (403) | 1,976 | 6,898 |
| Total equity | 6,292 | 6,325 | 8,797 | 14,176 | 22,698 |
| Wholesale & debt funding | 1,300 | 3,500 | 7,000 | 12,000 | 18,000 |
Appendix C: Key Investment Considerations
C.1 Why OptimaBank, Why Now
The convergence of a proven digital-banking playbook, a large and
well-regulated market, a persistent inclusion and SME-finance gap, and
an easing rate environment creates a distinctive window for a
well-capitalised universal challenger. The success of digital banks that
have reached profitability and scale within five years de-risks the core
operating thesis, while the breadth of OptimaBank’s universal-bank
licence allows it to address value pools beyond the reach of
single-product neobanks.
C.2 Summary of Strengths
- A full universal-bank licence combined with a modern, low-cost
technology platform. - A clear, demonstrated path to profitability and an attractive
return-on-equity trajectory. - A diversified revenue model spanning interest, fee, corporate and
insurance income. - A prudent, phased capitalisation strategy maintaining ratios
above regulatory minima. - A credible regional growth runway into SADC and pan-African trade
corridors. - Multiple, well-defined exit pathways for investors.
C.3 Summary of Key Risks
Prospective investors should weigh the strengths above against the
principal risks, which are managed through the frameworks described in
Section 9:
- Execution: Execution and talent risk inherent in
building a bank from inception. - Regulatory: Dependence on obtaining and
maintaining SARB authorisation. - Credit: Credit-cycle and asset-quality risk,
particularly in the early unsecured and SME books. - Funding: Reliance on capital markets for the
phased capital tranches. - Operational: Cyber, fraud and operational risk
inherent in digital banking at scale. - Competitive: Competitive response from
incumbents and other challengers.
C.4 Concluding Statement
OptimaBank Africa Group offers a rare opportunity to participate,
from inception, in the creation of a modern African universal bank
designed for profitability, scale and impact. The plan set out in this
document combines analytical rigour, prudential discipline and a clear
execution pathway — and is presented to prospective investors and
lenders as the basis for further engagement and detailed due
diligence.
Confidential — this business plan is provided to prospective investors and lenders for evaluation purposes only and may not be reproduced or distributed without the written consent of OptimaBank Africa Group (Pty) Ltd.