Why traditional budgeting inflates fixed costs
In most Swiss SMEs, the annual budget starts from the previous financial year: you take last year's income statement, apply a percentage increase to costs, and adjust a few line items. This incremental approach is fast, but it has a worrying side effect: inherited expenses — software subscriptions, recurring consulting fees, excess office space, vacant roles that remain budgeted — become permanent even when they no longer generate value.
Zero-based budgeting (Zero-Based Budgeting, ZBB) turns that logic on its head. Every financial year starts from zero: no cost item is automatically approved simply because it existed the year before. Every expense must be justified in relation to business objectives, expected revenue, and expected return. This is not about indiscriminate cuts, but about a structured process for prioritizing resources.
For entrepreneurs, SME CFOs, and fiduciaries supporting clients with 5–50 employees, ZBB is particularly effective during periods of rapid growth, restructuring, or simply when margins are shrinking without an obvious cause. With accounting tools such as Accountex, historical data remains the analytical foundation — but the decision to allocate funds becomes deliberate, not inherited.
Incremental budgeting vs zero-based budgeting
Before adopting ZBB, it is worth understanding how it differs from the method most widely used in Swiss SMEs:
| Aspect | Incremental budgeting | Zero-based budgeting (ZBB) |
|---|---|---|
| Starting point | Previous year's budget | Zero — every line item must be rebuilt |
| Decision logic | "How much more than the previous financial year?" | "Is this expense still necessary and a priority?" |
| Fixed costs | Tend to accumulate over time | Reassessed every year |
| Effort required | Low — quick update | Medium to high — requires analysis and comparison |
| Transparency | Limited — "dormant" line items go unnoticed | High — every franc has a rationale |
| Best suited to | Stable companies with predictable costs | SMEs in transformation, margins under pressure, multiple cost centers |
| Recommended frequency | Annual with quarterly adjustments | Annual (or rolling every 12 months) |
The three pillars of zero-based budgeting
ZBB does not mean wiping everything out and starting over with no memory. It means applying three principles in every planning cycle:
1. Mandatory justification
Every cost item — from office rent to IT maintenance contracts — must be linked to an operational or strategic objective. If you cannot explain why it is needed, it does not go into the budget.
2. Decision packages
Expenses are grouped into "decision packages": the smallest units of activity with cost, expected output, and alternatives. Management compares packages against one another and ranks them by priority, not by department.
3. Service levels
For each area, define three scenarios: minimum viable (only what keeps operations running), target (the optimal level for your objectives), and stretch (additional investments if revenue allows). This avoids blind cuts to critical functions.
ZBB in the Swiss accounting context
In Switzerland, corporations and businesses with significant turnover are required to maintain double-entry bookkeeping that allows transactions to be reconstructed and the income statement and balance sheet to be prepared (Art. 957 et seq. CO). Zero-based budgeting fits naturally into this framework: it does not replace accounting obligations, but it enriches the financial planning that precedes year-end closing and general meeting decisions.
Some areas deserve specific attention in the Swiss context:
- Personnel costs: salaries, OASI/IV/EO contributions, occupational pension (BVG/LPP), and mandatory social insurance often represent 50–70% of fixed costs. In ZBB, they should be treated as packages by role/function, not as monolithic blocks.
- Taxes and VAT: tax projections (federal, cantonal, and municipal profit tax, as well as VAT on purchases and sales) must be included as explicit line items: for VAT, the applicable federal rates under the VAT Act (MWSTG/LIVA) apply, while profit tax varies depending on the canton and municipality of tax domicile.
- Deductible vs non-deductible expenses: distinguishing tax-relevant line items helps avoid budgeting personal or inadmissible expenses that artificially inflate operating costs.
- Audit and reporting: a documented budget strengthens governance regardless of whether limited or ordinary audit is required (Art. 727 et seq. CO): in the event of a tax audit, a loan request, or within the auditor's mandate, traceability of spending decisions is a sign of solid internal control.
Six-step process for a Swiss SME
Here is a practical path, adaptable to companies with 5–50 employees and turnover of up to CHF 20 million:
Analyze historical data
Export from your accounting software (e.g. Accountex) the income statement for the last 2–3 financial years, broken down by cost center and category. Identify recurring line items, seasonal peaks, and "ghost" expenses — those recorded but with no measurable output.
Define objectives and constraints
Set target revenue, desired operating margin, and maximum spending cap by category. Non-negotiable constraints (social contributions, contractual rent, lease payments) should be listed separately as structural costs.
Build decision packages
For each function (sales, production, administration, IT), create packages with a description, annual cost, expected benefits, and alternatives. Example: "Advanced CRM package — CHF 12,000/year — improves client follow-up by 20% — alternative: basic module upgrade CHF 4,000".
Rank by priority
Assign each package a score (e.g. impact × urgency × strategic alignment). Sort from highest to lowest and allocate the available budget until it is exhausted. Packages below the threshold are deferred or eliminated.
Validate with management
Present the proposed budget to the manager, board of directors, or general meeting of shareholders. Document the choices: which packages were approved, which were deferred, and why. This trail is also useful for the auditor or fiduciary.
Monitor and adjust
Compare actuals vs budget monthly or quarterly. In Accountex, variance reports by cost center immediately highlight where actual spending deviates from the plan. Adjust through internal reallocation, not only with end-of-year cuts.
How to avoid fixed-cost creep
The real enemy of margins in SMEs is not always a large, visible expense, but the compound effect of small recurring line items. ZBB helps identify them systematically:
| Type of fixed cost | Warning sign | ZBB action |
|---|---|---|
| Software and SaaS | Duplicate licenses, unused modules, automatic renewals | Annual license inventory; consolidation onto integrated platforms |
| Recurring consulting | Retainers with no measurable deliverables | Switch to project-based mandates with defined objectives |
| Space and equipment | Excess square footage, underutilized machinery | Review lease contracts; sell or sublease idle assets |
| Headcount | Roles budgeted but vacant for months | Remove the line item or reframe it as outsourcing/on-demand |
| Generic marketing | Budget "by habit" with no tracked ROI | Budget tied to campaigns with KPIs (leads, conversions, CAC) |
Practical example: services SME in Lugano
An IT consulting company with 12 employees and CHF 2.4 million in turnover has used incremental budgeting for years. In 2025, operating costs amount to CHF 1.95 million (+4% on the previous year), with an operating margin of 18.7%. The goal for 2026 is to raise the margin to 22% without cutting productive staff.
By switching to ZBB, the CFO analyzes 847 expense line items grouped into 34 decision packages. Result:
- Removed CHF 38,000 in redundant software licenses (3 project management tools → 1 platform)
- Renegotiated cleaning and maintenance contract: CHF 12,000/year saved
- Legal retainer converted to hourly consulting: estimated savings CHF 18,000
- Deferred local server upgrade (cloud already sufficient): CHF 25,000 postponed to 2027
- Reinvested CHF 30,000 in sales training with a measurable client acquisition target
Operating costs budgeted for 2026: CHF 1.87 million (−4.1% vs 2025). Projected operating margin: 22.1%. No layoffs, but CHF 93,000 in inherited fixed costs were eliminated or reallocated through deliberate decisions.
How Accountex supports zero-based budgeting
Structured data for analysis
The preconfigured Swiss chart of accounts, cost centers, and VAT categories let you quickly export historical income statements — an essential foundation for building decision packages and identifying recurring line items.
Budget vs actuals
Enter the approved budget by line item or cost center and monitor variances month by month. Visual reports highlight where actual spending exceeds the plan, enabling timely corrections rather than surprises at year-end closing.
Collaboration with your fiduciary
Share access with your fiduciary or tax advisor: they can contribute to cantonal tax projections and verify the deductibility of budgeted line items, reducing the risk of planning fiscally problematic expenses.
Traceability for governance
Every transaction remains linked to documents and categories. In the event of an internal review, annual general meeting, or bank request, the accounts document not only what was spent, but also how the budget was built and monitored.
Common mistakes to avoid
Confusing ZBB with across-the-board cuts
Zero-based budgeting is not about reducing everything by 10%. It is about allocating resources where they generate the most value. Indiscriminate cuts to training, maintenance, or quality can cost more in the medium term.
Underestimating the time the process takes
A full ZBB cycle takes 2–4 weeks for an SME. Plan to start at least 8–10 weeks before the beginning of the financial year (ideally September–October for a calendar-year entity).
Isolating the process from accounting
If the budget lives in an Excel spreadsheet disconnected from your accounting software, monitoring becomes manual and fragile. Integrate budget and actuals in the same accounting tool.
Ignoring mandatory Swiss costs
Social contributions, BVG/LPP premiums, accident insurance, and taxes are non-negotiable. Include them as structural line items before allocating discretionary budget, to avoid shortfalls at year-end.
When to adopt zero-based budgeting
ZBB does not replace incremental budgeting in every situation. It is the right choice when margins are falling without an obvious cause, when the company is going through a strategic change (new market, acquisition, reorganization), or when you want to establish a culture of spending accountability across the organization.
For many Swiss SMEs, a hybrid approach works well: incremental budgeting for stable, predictable line items (rent, social contributions, leasing), and zero-based review every 2–3 years — or annually for high-variability categories (IT, marketing, consulting).
Starting from zero every year requires discipline, but the reward is concrete: a lean fixed-cost portfolio, protected margins, and financial decisions based on data and priorities — not on the inertia of the previous financial year.