Account audit in Switzerland in 2026: ordinary or limited review? SME guide and key points

Do you have an LLC or a corporation in Geneva (or elsewhere in Switzerland) and the question comes up every year at closing: "Do we need an audit, yes or no? And if so, which one?"

Let me be clear: audit is not just a formality. It's a stress test. And when things go wrong, it's always at the worst moment: loan application, investor entry, company sale, tax audit, partner conflict.

This guide gives you the 2026 thresholds, the difference between ordinary and limited review, how to prepare a clean file, and the pitfalls we see in practice with Geneva SMEs.

Legal and practical sources: (source: Swiss Code of Obligations (CO), art. 727–731a – Legal provisions on ordinary and limited audit), (source: Audit body and types of review – SME Portal (SECO)), (source: Practical knowledge on audit in Switzerland (SME) – Ch.ch Portal), (source: ASR (Federal Audit Oversight Authority) – Definition of thresholds for ordinary/limited review), (source: Audit, limited and ordinary review in 2026: obligations, opting-out – Ark Fiduciaire).

What thresholds and audit obligations in Switzerland for 2026?

The three criteria that trigger ordinary review

In Switzerland, ordinary review is required when your company exceeds certain thresholds. The mechanism is simple on paper, but must be read correctly.

You move to ordinary review if, for two consecutive fiscal years, you exceed at least two of the following three thresholds:

• Total balance sheet: CHF 20,000,000
• Revenue: CHF 40,000,000
• Staff: 250 full-time jobs on average per year

It's "2 out of 3" over two years. Not "once and that's it." Not "almost, so we qualify." (source: Swiss Code of Obligations (CO), art. 727–731a – Legal provisions on ordinary and limited audit)

Cases where ordinary review is required even without exceeding thresholds

There are situations where there is no discussion:

• Certain companies subject to supervision (depending on their activity)
• Certain structures with specific governance requirements
• Cases provided by law or statutes/contracts (e.g. requirement from an institutional landlord, a bank, a shareholder)

In practice, in Geneva, ordinary review is often "imposed" by a financier. Not because the law requires it, but because the bank wants peace of mind.

Limited review: the norm for many SMEs

If you don't fall under ordinary review, the general rule is limited review.

Limited review is still an audit. It's not just a decorative stamp. Simply, the scope of work is more limited and the approach is less intrusive.

(source: Audit body and types of review – SME Portal (SECO))

Opting-out: possible, but not a "hack"

You can waive the audit (opting-out) if:

• you have fewer than 10 full-time jobs on average per year, and
• all shareholders/partners agree

It sounds attractive: lower costs, less paperwork. Except opting-out has a hidden price: you lose a safeguard. And when a company grows quickly, opting-out often becomes a burden (backtracking, upgrades, late requests for supporting documents).

Field observation: many small Geneva LLCs opt out "because they can." Then, two years later, they want a loan or they hire. Result? You have to reconstruct files, explain variations, and it costs more than having done a proper limited review from the start.

(source: Practical knowledge on audit in Switzerland (SME) – Ch.ch Portal)

Table — Which regime for your SME?

Ordinary vs limited review: procedures, differences, SME impacts

Are you hesitating between "ordinary" and "limited"? Often, you don't choose: the law or your partners impose it. But understanding the difference changes how you prepare for the year.

What ordinary review really changes

Ordinary review is heavier, more structured, and more demanding on:

• analysis of the internal control system (ICS)
• risk assessment
• scope of testing
• expected documentation

Practically, it means more interviews, more tests, more requests for evidence. And a stronger requirement for governance.

(source: Swiss Code of Obligations (CO), art. 727–731a – Legal provisions on ordinary and limited audit)

Limited review: fewer tests, but not less responsibility

Limited review relies more on:

• analytical procedures
• requests for information
• targeted controls

Beware, classic trap: some SMEs think "limited" = "nothing is checked." False. If your accounts are shaky, it shows quickly: inconsistent margins, stock variations, growing receivables, private expenses, poorly handled VAT.

(source: Audit body and types of review – SME Portal (SECO))

Concrete impacts on a Geneva SME

Some very concrete impacts we see daily:

• Internal time: ordinary review often mobilizes management and accounting for several days (sometimes spread out). Limited review, if the file is clean, can be managed much faster.
• Process quality: in ordinary, a "patched" ICS is costly. In limited, it's still useful, especially if you have volume.
• External credibility: for a company seeking funding, signing with a major client, or selling, a more robust audit is reassuring.

In our opinion, if you're close to the thresholds or growing fast, it's better to act as if you'll move to ordinary review. Not for show. To avoid hitting a wall.

Table — Operational differences (SME)

Preparing your audit file efficiently: checklist and best practices

Here's the field version: what saves time, avoids back-and-forth, and reduces risk of comments.

What the auditor wants to see (and quickly)

An auditor doesn't want to "guess" your accounting. They want evidence, logic, an audit trail.

• Final balance and general ledger
• Annual accounts (balance sheet, income statement, notes)
• Supporting documents for significant items
• Reconciliations (banks, VAT, salaries)
• Key contracts (leases, loans, leasing, major clients/suppliers)

Checklist #1 — Audit file ready to send

• Final balance + comparative balance N/N-1
• Complete general ledger (PDF/Excel export depending on tool)
• Signed annual accounts or "ready to sign" version
• Fixed asset details + depreciation table
• Inventory of stocks (method, date, valuation)
• List of debtors/creditors with due dates
• Bank reconciliations as of 31.12 (all accounts)
• Annual VAT statement + reconciliation with accounting revenue
• Payroll statements (AVS/LPP/LAA) + reconciliations
• Loan, leasing, guarantee contracts
• Minutes (general meeting/partners' meeting) and major decisions
• List of disputes, risks, post-closing events

Best practices that change everything

• One file = one logic: every balance sheet item must have clear "support".
• Clean cut-off: December invoices recorded in December, not in January "because it's easier".
• Reconciled VAT: if your accounting revenue and VAT revenue don't match, you'll waste time.

Field observation: many SMEs discover the problem at closing, when asked "your stock inventory as of 31.12?" Silence. Then improvisation. And improvisation, in audit, is obvious.

Checklist #2 — Before closing (to do in November/December)

• Block an inventory date (stock, cash, sensitive equipment)
• Check ongoing contracts (renewals, indexations, terminations)
• Review doubtful receivables (and document)
• List accrued expenses (invoices not received)
• Review shareholders'/partners' current accounts
• Check subscriptions and recurring expenses (duplicates)
• Prepare the list of post-closing events (January-February)

A step-by-step method to get through the audit without losing your nerves

Step 1 — Clarify the type of review and the schedule

• Confirm if you are in limited, ordinary, or opting-out.
• Set the dates: closing, file submission, fieldwork, report.

In Geneva, if you wait until March to arrange all this, you're in the queue. And then, people wonder why "it takes time".

Step 2 — Do an internal pre-check (30 minutes, but useful)

Ask yourself:

• Who approves payments?
• Who can create a supplier?
• Who can change an IBAN?
• Who checks expense reports?

If the answer is "the same person does everything", it's not necessarily illegal. But it's a risk. And the auditor will notice.

Step 3 — Secure sensitive items

The items that trigger 80% of questions:

• Revenue (cut-off, discounts, credits)
• Stocks (existence, valuation)
• Receivables (collectibility)
• Provisions (justification)
• Shareholders'/partners' current accounts
• VAT

Step 4 — Prepare reconciliations

• Banks: reconciliation as of 31.12
• VAT: accounting revenue vs VAT statements
• Salaries: social charges vs accounting

Step 5 — Anticipate "awkward questions"

• Is there a client/supplier dispute?
• An undocumented shareholder loan?
• Private expenses booked as business?

You may have gray areas. The problem isn't having them. The problem is hiding them or not documenting them.

Step 6 — Review the file as if you were the auditor

Take an item: "Other receivables." Ask yourself: if I don't know the company, do I understand? If not, the auditor will ask.

Practical case (Geneva): limited review goes wrong… then corrected

Typical SME: Geneva LLC in services (IT consulting), 12 employees, 2025 revenue: CHF 3,200,000. Limited review.

Situation at closing

• Client receivables as of 31.12: CHF 620,000
• 3 major clients represent CHF 310,000
• Stock: none
• VAT: quarterly statements

Problem: one client (CHF 145,000) disputes part of the services since November. Management thinks "it will be resolved." Nothing is provisioned, nothing is documented.

What the auditor asks for

• Contract, purchase orders, proof of delivery
• Correspondence about the dispute
• Collectibility analysis

The company has no file. Just scattered emails.

Concrete correction

We do the work properly:

1. Gather documents (contract, timesheets, meeting minutes).
2. Document the dispute: disputed amount CHF 60,000.
3. Record a provision for client risk of CHF 60,000.
4. Reclassify the receivable: undisputed CHF 85,000 remains as trade receivables, disputed part treated per internal policy.

Result on accounts

• Result before correction: profit CHF 210,000
• Provision: - CHF 60,000
• Result after correction: profit CHF 150,000

Does it sting? Yes. But it's clean, defensible, and avoids an audit report with reservations or endless discussions.

Moral: audit doesn't "create" the problem. It brings it to light.

The 8 common mistakes during an audit (and how to avoid them)

1) Improvised cut-off (sales and expenses in the wrong period)

Symptom: January invoices recorded in December "because it concerns December" without proof, or vice versa.

Correction:

• List invoices received after closing
• Identify accrued expenses
• Document services performed but not invoiced

2) VAT: the classic inconsistency

Symptom: Accounting revenue ≠ VAT declared revenue, without explanation.

Correction:

• Do an annual reconciliation
• Explain differences (out-of-scope services, exports, corrections, credit notes)

Reminder of current rates: 8.1% (standard), 2.6% (reduced), 3.8% (accommodation). If your software settings are not updated, you create serial errors.

3) Shareholders'/partners' current accounts not managed

Symptom: withdrawals, private payments, reimbursements, without clear supporting documents.

Correction:

• Keep details per person
• Justify each transaction
• Formalize loans (terms, interest if applicable)

In Geneva, this comes up quickly when there are several partners and "everyone reimburses themselves whenever they want." It often ends in internal tensions.

4) Provisions "by feeling"

Symptom: provision for risks made without basis, or absence of provision when risk is real.

Correction:

• Document: nature of risk, probability, estimate
• Keep evidence (lawyer letters, exchanges, calculations)

5) Stocks: nonexistent inventory or fanciful valuation

Symptom: inventory done "from memory", without date, without method.

Correction:

• Dated, signed inventory
• Consistent valuation method
• Treatment of obsolescence

6) Fixed assets: purchases booked as expenses (or vice versa)

Symptom: equipment, software, improvements, misclassified.

Correction:

• Clear policy (activation threshold)
• Up-to-date fixed asset table
• Supporting documents and commissioning dates

7) Salaries and social charges: missing reconciliations

Symptom: accounting doesn't match AVS/LPP/LAA statements.

Correction:

• Annual reconciliation
• Justify differences (bonus, retroactive, provisions)

8) Post-closing events ignored

Symptom: major unpaid in January, termination of key contract in February, dispute explodes… and nothing is mentioned.

Correction:

• List significant events up to the date of account approval
• Document analysis (adjustment or note in the appendix)

What audit changes for governance (even in SMEs)

Audit is often seen as a cost. I also see it as a revealer.

• Who decides what?
• Who controls payments?
• Who has access to data?
• Can we explain a figure without searching for 2 hours?

When an SME applies a minimum of discipline, it gains speed. Fewer discussions, fewer mistakes, less stress.

Choosing your audit body: the criteria that really matter

Sector expertise

A trading company with stock is not a service company. A property manager is not a SaaS startup. You want someone who understands your flows.

Independence and clarity

If your auditor "does everything" and turns a blind eye to everything, you're buying false comfort. When things break, you're alone.

Ability to meet deadlines

The audit report often arrives when you need it for:

• a bank
• a tender
• a due diligence

If the audit body is overloaded, you suffer.

(source: Practical knowledge on audit in Switzerland (SME) – Ch.ch Portal)

Deadlines, meetings, and reality in French-speaking Switzerland

The law sets rules, but real life has its constraints.

• If you close on 31.12, peak season starts in January.
• Documents often arrive in bulk in February.
• Everyone wants their report "yesterday" in March.

My advice is simple: block your calendar in October/November. You save time and money.

When to voluntarily move to ordinary review (even if not required)

Yes, it happens. And sometimes it's a good decision.

You can consider a more demanding review if:

• you are preparing to sell the company in 12–24 months
• you are seeking an investor
• you are growing fast and processes are still fragile
• you want to reassure a bank about significant financing

In our opinion, the right time is before someone asks you. When you do it under pressure, you pay for the rush.

FAQ Swiss Audit 2026: everything SMEs need to know

1) Does a Geneva LLC with 3 employees need to have its accounts audited?

Not necessarily. If you have fewer than 10 full-time jobs on average per year and all partners agree, you can opt out of the audit (opting-out). Otherwise, you go for a limited review. (source: Practical knowledge on audit in Switzerland (SME) – Ch.ch Portal)

2) How do the thresholds (20 mio balance, 40 mio revenue, 250 FTE) apply?

You move to ordinary review if you exceed at least two of these three thresholds for two consecutive years. It's the "2 out of 3" rule over two years. (source: Swiss Code of Obligations (CO), art. 727–731a – Legal provisions on ordinary and limited audit)

3) Limited review: what does the auditor check exactly?

They do analyses, ask questions, and test targeted points. They don't redo your accounting, but must obtain sufficient assurance that the accounts do not contain significant anomalies. (source: Audit body and types of review – SME Portal (SECO))

4) Can you easily change your audit body?

Yes, but you must follow the appointment rules (general meeting/partners' meeting) and manage the handover properly: file transfer, outstanding points, continuity. If you change because "the other asked too many questions", expect the new one to ask as well.

5) Is opting-out a good idea for an SME that wants to grow?

Often, no. You save costs short-term, but lose discipline and credibility. If you aim for a bank, investor, or sale, regular audit saves you painful reconstructions.

6) What triggers most comments in SME audits?

Three topics come up constantly: cut-off (sales/expenses), VAT (reconciliations), and shareholders'/partners' current accounts (supporting documents). If you secure these, you've already done a big part of the work.

(source: ASR (Federal Audit Oversight Authority) – Definition of thresholds for ordinary/limited review)

References

• Practical knowledge on audit in Switzerland (SME) – Ch.ch Portal
• Audit body and types of review – SME Portal (SECO)
• ASR (Federal Audit Oversight Authority) – Definition of thresholds for ordinary/limited review
• Swiss Code of Obligations (CO), art. 727–731a – Legal provisions on ordinary and limited audit
• Audit, limited and ordinary review in 2026: obligations, opting-out – Ark Fiduciaire