Audit, limited and ordinary review, opting-out: rules in Switzerland in 2026

Do you have a GmbH or AG in Geneva and wonder if you need to appoint an audit body, which type of review to choose, or if you can opt out? Let's keep it simple, practical, and above all, useful.

The topic seems “administrative”. In practice, it’s a lever for credibility… and sometimes a classic trap that blows up in your face at the wrong moment: investor entry, credit application, shareholder conflict, or a tax audit that drags on because the accounting isn’t in order.

What is audit in Switzerland: legal framework and relevant bodies

In Switzerland, “audit” (statutory audit) is not a vague concept. It’s a system provided for by the Swiss Code of Obligations (CO) that requires certain companies to have their annual accounts audited by an audit body.

Who is actually concerned?

Mainly:

• AG
• GmbH
• Cooperatives
• Certain foundations (depending on size and activity)

For a simple reason: these legal forms often separate management (directors/managers) from economic interests (shareholders/partners). The audit helps reduce the risk that the accounts tell an overly “arranged” story.

The three regimes: ordinary, limited, or opting-out

You have three possible scenarios:

1. Ordinary audit (the most demanding)
2. Limited audit (the most common for SMEs)
3. Opting-out (waiving the limited audit, possible under certain conditions)

Key point: you don’t always have a “free choice”. The law sometimes requires the ordinary audit. And opting-out is not a magic button: you must meet conditions and follow a procedure.

Who are the players around the audit?

In real life, you’ll encounter:

• The audit body: an approved, independent person or company that performs the audit.
• The board of directors (AG) / managers (GmbH): responsible for the accounts, even if the fiduciary handles the bookkeeping.
• The general meeting: elects the audit body (or decides on opting-out if possible).
• The commercial register: records the appointment of the audit body or the opting-out.

Field note: in Geneva, many managers think “the fiduciary takes care of everything”. Yes, we handle a lot. But the formal decision (GM, minutes, commercial register entry) must be proper. Otherwise, the commercial register will return your file. Result? Delays, back-and-forth, and sometimes a bank waiting.

Useful sources (without drowning you)

For official basics and definitions: (source: Audit body and types of audit – Official Swiss SME Portal).

Ordinary audit: obligations, thresholds, procedures and impacts

The ordinary audit is the “real audit” in the classic sense. More intrusive, more structured, more expensive. And sometimes unavoidable.

When the ordinary audit becomes mandatory

The ordinary audit is required if your company reaches certain size thresholds (over two consecutive years) or if your structure requires it (e.g., certain listed companies or those with special obligations).

I won’t throw random thresholds at you: they change, and what matters for you is the mechanism.

• Look at two financial years.
• Check if you exceed at least two criteria (typically: total assets, turnover, headcount).
• If yes, you switch to ordinary audit.

This switch often happens after a phase of rapid growth. And that’s where it gets tricky: the company grows, but internal processes (invoicing, payment validation, inventories, cut-off) remain “old school”. The ordinary auditor doesn’t pretend.

What the ordinary auditor will look at (and what surprises)

An ordinary audit involves, in particular:

• A risk-based approach
• More extensive testing
• Strong focus on the internal control system (ICS) depending on size and complexity
• External confirmations (banks, clients, suppliers) as needed

The classic trap: you think the audit is “just” about the numbers. In reality, it’s also about how those numbers are produced.

Concrete impacts on your organization

Expect:

• More document requests
• Deadlines to anticipate (planning, interim, final)
• More technical discussions (provisions, revenue recognition, contracts, off-balance-sheet commitments)

And yes, it costs. But the most expensive cost is a last-minute, improvised ordinary audit in February when everyone is already overwhelmed.

Checklist #1 — Are you about to switch to ordinary audit?

Tick what applies:

• Your turnover jumped (new big client, new market)
• You hired quickly (and admin didn’t keep up)
• You have inventories, long-term projects, or complex contracts
• You have several entities (group, subsidiaries, branches)
• A bank or investor asks for “audited accounts”

If you tick 2–3 boxes, this is not theory. It’s about preparation.

Limited audit: specifics, standards, flexibility and practical cases

The limited audit is the Swiss SME standard. Lighter than the ordinary, but it’s not “just a stamp”.

What a limited audit really covers

The limited audit is based on a dedicated standard: the Swiss Standard on Limited Audits (NCR). (source: Swiss Standard on Limited Audits (NCR) – EXPERTsuisse)

In practice, the auditor mainly does:

• Interviews
• Plausibility analyses
• Sample checks

They don’t do the same level of testing as in the ordinary audit. But they must still obtain reasonable assurance that the accounts do not contain significant anomalies.

What this changes for a Geneva SME

In Geneva, we often see service SMEs (IT, consulting, architecture, medical) where:

• Turnover is simple (monthly invoices)
• Few or no inventories
• Few complex assets

The limited audit is generally suitable. But beware: “simple” does not mean “risk-free”. Typical risks include:

• Year-end invoicing (cut-off)
• Private expenses slipping into the accounts
• “Finger-in-the-air” provisions
• Poorly documented shareholder loans

Practical cases (without novels)

Case 1 — Consulting firm (Geneva), 6 employees

• Properly kept accounts
• Monthly invoicing
• Some representation expenses

The limited audit goes smoothly if:

• Expense reports are justified
• Client contracts exist
• Closing entries are documented

Case 2 — E-commerce company (Geneva), inventories and returns

Even in a limited audit, the auditor will insist on:

• Inventory at 31.12 (procedure, evidence)
• Inventory valuation
• Provision for returns/discounts

And here, many SMEs discover the problem at closing: no inventory procedure, no traceability, “estimated” inventories. Result? Long discussions, corrections, and sometimes a report that stings.

Table #1 — Limited vs ordinary audit (field view)

Opting for opting-out: conditions, procedure, updates 2025-2026

Opting-out means waiving the limited audit. Yes, it reduces costs. No, it’s not always a good idea.

Basic conditions for opting out

The best-known condition: fewer than 10 full-time equivalent employees on average per year.

And you need:

• Approval of the shareholders’/partners’ meeting
• A compliant declaration
• Registration (or update) in the commercial register

Cantonal forms and notices set the tone for what’s expected: (source: Official notice on opting-out (Commercial Register Office of the Canton of Bern)), (source: Opting-out declaration – Canton of Vaud), (source: Declaration of waiver of limited audit – Canton of Valais).

Even if these documents come from other cantons, the logic is the same: the commercial register wants a clear, dated, signed decision, consistent with your articles and situation.

Step-by-step — How to properly implement opting-out

1. Check FTE headcount

• Calculate the annual average in full-time equivalents.
• Pay attention to part-timers, apprentices, short-term contracts.

2. Check that no shareholder/partner objects

• In some cases, a minority can require an audit.

3. Prepare the meeting decision

• Clear minutes: waiver of limited audit, mention of conditions.

4. Draft the waiver declaration

• Standard wording expected by the register.

5. File with the commercial register

• With signed documents.
• And, if needed, update registrations.

6. Update your internal governance

• Even without an audit body, you must produce proper accounts.

Updates 2025-2026: what really changes for you

To be transparent: the announced “updates” are often seen as a big upheaval. In practice, it’s mainly stricter expectations for traceability and compliance of files (commercial register, documents, consistency of decisions).

What I see coming (and already see):

• Less tolerance for incomplete files
• More consistency checks (headcount, articles, decisions)
• Requests for additional information that extend deadlines

If you want to opt out in 2026, do it properly. A “botched” opting-out costs more in correction hours than a well-managed limited audit.

When opting-out is a good idea (and when it’s a false economy)

Good idea if:

• You’re a small, stable structure
• Your accounting is kept seriously
• You don’t need “audited” financial statements for third parties

False economy if:

• You’re seeking bank financing
• You’re preparing a sale, investor entry
• There are tensions between partners
• Your accounting is fragile (delays, improvised closing entries)

In our view, the best approach is simple: if your business depends on third-party trust (bank, landlord, major client), keep a limited audit. You pay for reputational insurance.

Practical consequences: risks, credibility, supervision and sanctions

We rarely talk about the consequences of choosing the “wrong” regime. Yet, that’s where it hurts.

Credibility: the question third parties ask

A third party doesn’t read your accounts like you do. They wonder:

• Has someone independent looked at them?
• Are the numbers reliable?
• Is governance serious?

Without an audit, you’ll have to compensate with:

• Very clean accounting
• Clear notes
• Solid explanations

Otherwise, you get an implicit discount: tougher credit conditions, required guarantees, endless discussions.

Internal risks: errors, fraud, conflicts

Audit (even limited) acts as a safeguard. Without it:

• Cut-off errors slip through more easily
• Shareholder current accounts become a catch-all
• Private expenses get mixed in
• Partner conflicts escalate (“what exactly did you hide?”)

Sanctions and legal consequences (without dramatizing)

The risk isn’t “the police show up”. The risk is:

• A commercial register refusing a registration
• Increased liability for directors/managers if the accounts are wrong
• Complications during a tax audit or legal proceedings

And if you’re required to have an audit and don’t? Now you’re in trouble. You risk corrective measures, and above all, immediate loss of credibility.

Best practices: governance, compliance and relationship with the commercial register

Want to avoid back-and-forth with the commercial register and audit surprises? Here’s what works, concretely.

Minimal governance to avoid trouble

Even a small GmbH should have:

• Clear separation between private and company expenses
• Payment validations (who approves what)
• Monitoring of shareholder/partner current accounts
• Written contracts (clients, loans, leases)

It’s not a luxury. It’s what makes your accounts defensible.

Relationship with the commercial register: what it expects

The commercial register isn’t there to “bother you”. It checks that:

• Decisions are made by the right body
• Signatures are valid
• Documents are consistent

In Geneva, the main time-waster: incomplete or contradictory files (minutes not matching the declaration, inconsistent dates, missing signatures).

Checklist #2 — Proper file for auditor appointment or opting-out

Before submission, check:

• Dated, signed GM/meeting minutes, explicit decision
• Auditor’s acceptance (if appointment) or waiver declaration (if opting-out)
• Proper signatures (registered persons, signing authority)
• Consistency with articles and current registrations
• Documented FTE headcount (if opting-out)
• Exact details (company name, registered office, UID if required)

Table #2 — Typical documents requested (French-speaking Swiss SME)

Limited audit or opting-out: how to decide without mistake

Want a simple rule? Ask yourself these three questions.

1) Who reads your accounts besides you?

• Bank?
• Investor?
• Major client (tenders)?
• Administration (subsidies, permits)?

If the answer is “yes”, the limited audit saves you pointless discussions.

2) Is your accounting “audit-ready”?

Let’s be honest:

• If your accounting is up to date every month, documents filed, closing documented → you can consider opting-out.
• If you close in March with bags of invoices and last-minute adjustments → opting-out is risky.

3) Is your shareholding stable?

As soon as there are:

• several partners,
• an active minority,
• or a tense relationship,

the limited audit acts as a “neutral third party”. It calms many debates.

Practical case with figures (CHF) — Geneva SME: the hidden cost of a poorly prepared opting-out

Let’s take a service company in Geneva (GmbH), 8 employees, annual turnover CHF 1,450,000.

• It opts out of the audit to save, say, CHF 3,500 in annual limited audit fees.

The following year: working capital loan application.

The bank requests:

• annual accounts,
• general ledger,
• receivables/payables details,
• justification of shareholder current accounts,
• explanations on adjustments.

Since the accounting wasn’t kept “properly” (missing documents, approximate cut-off), the company must:

• reclassify private expenses: CHF 18,000
• document a shareholder loan: contract + interest: CHF 250,000 balance to clarify
• reconstruct supporting documents and redo part of the closing: 25 hours of fiduciary at CHF 180/h = CHF 4,500

Total “catch-up”: CHF 22,500 (not counting stress and delay).

Result? The CHF 3,500 saving cost CHF 22,500.

Moral: opting-out is only worthwhile if your back office is solid.

Common mistakes + corrections (what we really see)

Mistake 1 — Confusing “fewer than 10 employees” and “fewer than 10 FTE”

What happens: you have 12 people at 40–60%, you think you’re under the threshold.

Correction: calculate the average annual full-time equivalent. Document it (internal table, contracts, occupancy rates).

Mistake 2 — Vague GM decision

What happens: minutes say “waiver of audit” without specifying the type of audit or the basis.

Correction: explicit minutes: waiver of limited audit, mention of conditions, effective date.

Mistake 3 — Thinking opting-out removes all discipline

What happens: no more audit body = relaxed accounting.

Correction: set a monthly routine (banks, receivables, VAT if applicable, salaries, supporting documents). Without this, you pay later.

Mistake 4 — Appointing an auditor “too late”

What happens: you discover at year-end that you need to be audited.

Correction: check during the year (headcount, growth, third-party requests). Anticipate, plan.

Mistake 5 — Mixing roles: the fiduciary is not the audit body

What happens: the same firm does accounting + audit without respecting independence.

Correction: separate mandates or ensure real independence. Otherwise, the audit loses its value.

What I recommend to executives (pragmatic)

• If you’re a stable SME, few third parties, impeccable accounting: opting-out can be justified.
• If you’re growing, or have a bank/investor: keep a limited audit.
• If you’re approaching size thresholds: prepare for the ordinary audit (processes, documentation, inventories, cut-off).

And above all: don’t decide based only on the auditor’s price. Decide based on the total risk cost.

FAQ Audit, limited review, ordinary and opting-out: answers to common questions

1) Does a GmbH in Geneva always need an audit body?

No. Many GmbHs have a limited audit, and some can opt out if the conditions are met and the procedure is done correctly.

2) Is the limited audit just a formality?

No. It’s lighter than the ordinary audit, but the auditor must still check the plausibility of the accounts and document their work according to the NCR. (source: Swiss Standard on Limited Audits (NCR) – EXPERTsuisse)

3) If we opt out, can we go back?

Yes. You can return to a limited audit by appointing an audit body and making the necessary filings with the commercial register. Don’t do it at the last minute if a bank asks for it.

4) Can a minority partner require an audit even if there are fewer than 10 FTE?

Yes, depending on the situation and the rights of the partners/shareholders. In multi-headed structures, clarify this before opting out.

5) Can the commercial register refuse an opting-out?

Yes, if documents are missing, the decision is poorly worded, or the file is inconsistent. Cantonal notices show the level of documentary requirements. (source: Official notice on opting-out (Commercial Register Office of the Canton of Bern))

6) What’s the best choice for an SME seeking a bank loan?

In most cases, the limited audit makes discussions easier. You save time, reduce requests for supporting documents, and send a signal of seriousness.

References

• Opting-out declaration – Canton of Vaud
• Official notice on opting-out (Commercial Register Office of the Canton of Bern)
• Declaration of waiver of limited audit – Canton of Valais
• Audit body and types of audit – Official Swiss SME Portal
• Swiss Standard on Limited Audits (NCR) – EXPERTsuisse