Why scenario planning is not just a crisis exercise
Many Swiss SMEs manage the annual budget as a single linear path: moderately growing revenue, stable costs, sufficient liquidity. It works as long as the market cooperates. When an economic slowdown arrives, demand drops suddenly, customer payments are delayed, or energy and wage costs rise, the absence of alternative scenarios turns a manageable problem into a liquidity crisis.
Scenario financial planning does not mean predicting the future, but modelling several plausible assumptions — base, optimistic and pessimistic — to understand how much stress your company can withstand and which decisions to activate in advance. Unlike a simple budget, each scenario includes explicit variables (revenue, margins, DSO, investments) and produces concrete indicators: months of financial runway, cash requirements, intervention thresholds.
This guide presents a practical approach for entrepreneurs, SME CFOs and fiduciary firms advising clients in Switzerland. The focus is on the operational method: building credible scenarios, linking them to management levers and integrating them into the quarterly reporting cycle — without waiting for dramatic signals from the economy.
The three essential scenarios for an SME
A useful model does not require dozens of variants. Three well-calibrated scenarios cover most operational decisions:
| Scenario | Typical assumptions | Objective | Horizon |
|---|---|---|---|
| Base | Revenue growth in line with the previous year, inflation on variable costs, no structural shock | Operating plan and formal budget | 12 months |
| Optimistic | New contracts, accelerated customer acquisition, margin improvement through efficiency | Assess investments and hiring | 12–18 months |
| Pessimistic / stress | Revenue decline of 15–30%, longer collection periods, increase in fixed costs, sector recession | Test resilience and define an emergency plan | 12–24 months |
The critical point is the credibility of the pessimistic scenario. It is not about imagining the absolute worst, but modelling realistic shocks for your sector: an export company targeting the EU reacts differently from a local services business or a tourist retail operation. Anchoring assumptions to historical data (e.g. the 2020 downturn, seasonality, customer concentration) makes the exercise defensible before the board of directors or shareholders.
Variables to model for each scenario
An effective scenario model starts from the income statement and cash flow statement, but translates accounting line items into management drivers you can influence:
Revenue and margins
Sales volume by product or service line, average price, conversion rate, contract renewal rate. For retail: purchase frequency and average transaction value. Calculate contribution margin by category, not just aggregate EBITDA.
In the stress scenario, identify which revenue is contractually guaranteed (fees, subscriptions) and which is discretionary (projects, spot orders).
Liquidity and working capital
Average days to collect (DSO), supplier payment terms (DPO), inventory turnover (DIO). A revenue decline combined with rising DSO is the most dangerous combination for cash.
Monitor operating liquidity separately from cash available after fixed commitments: rent, leasing, loan instalments, quarterly VAT instalments and AVS/LPP contributions.
Cost structure
Distinction between fixed costs (core staff, rent, software licences) and variable costs (raw materials, subcontractors, commissions). In the stress model, quantify which fixed costs can be reduced within 30, 60 or 90 days.
In Switzerland, personnel costs often represent 40–60% of operating costs: modelling hiring freezes, reduced overtime or use of temporary staff makes a concrete difference.
Investments and future commitments
Planned capex, fleet renewal, premises expansion, acquisitions. Each investment should be linked to a trigger: it proceeds only in the base or optimistic scenario, and is deferred in the stress scenario.
Also consider relevant off-balance-sheet commitments: guarantees to customers, bank sureties, long-term lease contracts.
Liquidity stress test: the heart of the method
The stress test answers a simple question: if the pessimistic scenario materialises tomorrow, for how many months can we operate without new external liquidity? The calculation starts from available cash and credit lines that can actually be drawn, subtracting non-deferrable outflows month by month.
Practical formula for runway (financial autonomy):
Runway (months) = Available liquidity ÷ Net monthly burn rate
Net burn rate is operational cash outflow after collected revenue, excluding extraordinary investments. If runway in the stress scenario falls below 3 months, the SME is in a high-risk zone; between 3 and 6 months it requires an active contingency plan; beyond 6 months it offers room to act methodically.
Illustrative example for a services Sagl with 12 employees in the Canton of Vaud:
| Item | Base scenario | Stress scenario (−20% revenue, DSO +15 days) |
|---|---|---|
| Cash and bank availability | CHF 180'000 | CHF 180'000 |
| Net monthly operating cash flow | + CHF 12'000 | − CHF 18'000 |
| Estimated runway | Cash growth | 10 months |
| Runway with hiring freeze and CHF 8'000/month cost reduction | — | 18 months |
The exercise shows how operational levers — not just initial cash — determine survival. Accounting software such as Accountex makes it possible to quickly extract historical collection and payment data to calibrate actual DSO and DPO, instead of using generic industry averages.
Triggers and action plan by scenario
A scenario without predefined decisions remains a spreadsheet. Associate each scenario with a set of measurable triggers and corresponding actions:
Alert triggers (yellow)
- Quarterly revenue more than 10% below the base scenario
- DSO above 60 days (or +10% compared with historical average)
- Runway below 6 months in the updated stress scenario
Actions: review sales pipeline, intensify collection follow-up, defer non-essential capex, update monthly forecast.
Intervention triggers (orange)
- Runway below 4 months in the actual situation (not just simulated)
- Loss of a customer representing more than 15% of revenue
- Decline in confirmed orders for two consecutive months
Actions: hiring freeze, renegotiate terms with suppliers, activate bank credit, reduce discretionary costs by 10–15%.
Crisis triggers (red)
- Runway below 2 months
- Unable to meet VAT instalments or social security contributions
- Breach of bank covenants or refusal to extend credit
Actions: immediate cost restructuring plan, proactive dialogue with bank and fiduciary advisor, assessment of a moratorium or composition agreement under the LEF, if necessary — always with specialised legal and tax support.
Tax and social security implications in scenarios
In Switzerland, scenario planning must integrate tax and social security obligations that do not automatically suspend in times of difficulty. VAT under the effective method is settled quarterly (or semi-annually/monthly on request) based on revenue and purchases for the period; under the flat-rate method (TDFN), the return is generally semi-annual and proportional to turnover. Profit tax instalments (cantonal and federal), on the other hand, generally follow the last assessment or an official estimate: a structural decline should be reported to the fiduciary advisor to request fair instalments or an adjustment, because the amounts set remain due until they are revised.
In stress models, plan separately for:
- VAT: periodic outflow (quarterly under the effective method; semi-annual under the flat-rate method/TDFN) based on actual revenue or gross turnover, net of input tax credit where applicable
- Profit tax (cantonal + federal): instalments based on the last assessment or official estimate — ask the fiduciary advisor to adjust instalments if the decline is structural
- AVS/AI/IPG and LPP contributions: fixed personnel costs; reductions only with headcount or hours worked reductions
- Withholding tax (Quellensteuer): if you employ staff subject to withholding tax, model the impact on cash flows
Accumulated tax losses (loss carryforward) can reduce future tax, but do not replace immediate liquidity. The value of scenario planning lies in preventing cash surprises linked to a rigid tax calendar.
Operational process: from model to quarterly cycle
Implementing scenario planning does not require a dedicated finance department. A quarterly cycle in five steps is sufficient for most SMEs with turnover up to CHF 20–30 million:
- Update actual data — monthly or quarterly close with income statement, balance sheet and cash flow statement in accordance with Swiss accounting standards (Swiss GAAP FER or US/IFRS where applicable).
- Recalibrate assumptions — compare actual revenue, margins and DSO with the base scenario; identify variances and causes (market, price, product mix).
- Update the three scenarios — project the next 12 months with the new assumptions; recalculate runway and financing requirements in the stress scenario.
- Validate with management — present a summary dashboard: revenue, EBITDA, cash, runway by scenario, triggers activated or at risk.
- Document decisions — record which levers have been activated (investment deferral, price review, hiring freeze) and who is responsible for follow-up.
Integration with Accountex
Integrated accounting software simplifies the exercise: reports on customer and supplier ageing to calculate actual DSO and DPO, cost centre analysis to isolate fixed and variable costs, exports to spreadsheets or BI tools to model scenarios. The goal is not to automate every assumption, but to reduce the time between accounting close and strategic decision — when every week counts.
Governance and responsibility
For Sagls and SAs with limited or ordinary audit, scenario planning falls within management's responsibilities under Art. 716a para. 1 CO (SA) and Art. 810 para. 2 CO (Sagl), which include organising financial control and preparing the financial plan necessary for management. In critical situations, the competent bodies must take timely measures, including those provided for in cases of capital loss or over-indebtedness (Art. 725 CO for SAs; for Sagls, Art. 820 CO with analogous application).
Involve the fiduciary advisor at least annually to validate tax assumptions and verify consistency with the tax return. If the SME has a board of directors or non-operating shareholders, share a summary version of the scenarios — not the full model — to align expectations on dividends, investments and risk.
Checklist: is the SME prepared for the unexpected?
| Element | Target status |
|---|---|
| Three documented scenarios (base, optimistic, stress) | Updated at least quarterly |
| Runway calculated in the stress scenario | ≥ 6 months, or active contingency plan if lower |
| Triggers and actions defined for each alert level | Shared with management and, where applicable, the board |
| Fixed costs mapped with reduction lever within 90 days | Amount quantified in CHF/month |
| Tax calendar integrated into cash flow | VAT, tax instalments, AVS/LPP |
| Credit lines verified as available | Bank confirmation, not just contractual limit |
| Customer concentration modelled | Impact simulated of losing top 1–3 customers |
Conclusion: preparing does not mean being pessimistic
Scenario financial planning turns economic uncertainty into anticipatable decisions. An SME that knows its runway in the stress scenario, has identified cost levers and defined operational triggers reacts more quickly and with greater clarity than one improvising in front of a bank statement in the red.
There is no need to wait for recession signals from SECO or a drop in exports: it is enough to observe your own figures — payment delays, falling orders, margins under pressure — to activate the scenario update cycle. In a Swiss context characterised by high labour costs, multi-level taxation and markets often dependent on a few customers, this discipline is one of the most accessible and effective forms of protection for an entrepreneur.
Start with a simple model, three scenarios and a runway calculation. Refine it every quarter with actual data from your income statement and accounting software. When the shock arrives — because sooner or later something will not go as planned — you will already have decided what to do.