Accounting Clean-up & Back Filings in Switzerland (GmbH/AG)

Accounting clean-up & back filings is the structured recovery process for a Swiss company whose bookkeeping, VAT, payroll postings, or year-end accounts are incomplete, inconsistent, or late. The objective is not “cosmetic corrections”. The objective is to restore a defensible accounting baseline so your business becomes tax-ready, bank-ready, audit-ready, and able to operate without recurring compliance stress.

For Swiss GmbH/AG, clean-up work typically ends with two outcomes:

  • Corrected books (reconciled and supportable for every period repaired)

  • Back filings completed (statutory accounts, corporate tax, VAT, payroll-related reconciliations where applicable)

What accounting clean-up means in practice

A clean-up engagement usually includes:

  • Rebuilding missing or unreliable periods (monthly/quarterly)

  • Correcting transaction classification and documentation gaps

  • Reconciling bank, receivables, payables, loans, equity, and VAT control accounts

  • Reconstructing payroll postings and employer cost allocation (if payroll exists)

  • Producing Swiss CO-aligned year-end schedules and annual accounts (where needed)

  • Preparing the file to support tax returns, VAT corrections, and auditor review

This is a controlled project, not a “quick fix”. The deliverable is a stable system you can maintain going forward.

When you need a clean-up (typical red flags)

Most companies discover the problem when something forces scrutiny. Common triggers include:

  • Bank onboarding or financing: the bank requests clean annual accounts and reconciliations

  • Auditor requests: the audit stalls because balances are not supportable

  • Tax authority follow-up: assessments don’t match the accounts or filings were missed

  • VAT inconsistencies: VAT returns don’t tie to the general ledger

  • Management uncertainty: profit looks “wrong”, cash doesn’t match results, margins are unclear

  • Provider transition: handover is incomplete, access is fragmented, records are inconsistent

  • Fast growth: volume outpaced internal finance capacity and control discipline broke down

If any of these apply, clean-up is usually cheaper than operating in “permanent correction mode”.

What back filings typically include

Back filings depend on what is missing and what your company is legally and operationally required to complete. Common workstreams:

  • Bookkeeping back periods (monthly/quarterly reconstruction)

  • Annual financial statements (Swiss CO) for missed years

  • Corporate tax return back filings (federal and cantonal) aligned to restored accounts

  • VAT return corrections/back filings (where applicable) with ledger reconciliation

  • Payroll reconciliation pack (if payroll exists) to align postings and year-end totals

A premium approach prioritises sequencing: fix the books first, then file based on corrected, reconciled numbers.

What we fix (scope areas)

1) Bank and cash reconciliation recovery

  • Every bank account reconciled to statements

  • Clear explanation for timing differences and outstanding items

  • Removal of “suspense” and unsupported balances

2) Receivables and payables integrity

  • AR/AP ageing rebuild (invoices, credit notes, settlements)

  • Mispostings and duplicates corrected

  • Clear support file for material balances

3) Shareholder, loans, and intercompany repairs

  • Agreements, schedules, and posting consistency

  • Interest and repayment logic aligned with evidence

  • Clear separation of business vs shareholder expenses to reduce downstream risk

4) VAT (MWST) control account discipline (if registered)

  • VAT returns tied to VAT control accounts and ledgers

  • Rate classification reviewed for recurring invoicing patterns

  • Exception log for missing supplier invoices and weak documentation

5) Payroll postings alignment (if payroll exists)

  • Payroll outputs matched to general ledger postings

  • Employer cost logic stabilised (salary, contributions, provisions)

  • Year-end payroll totals made consistent and supportable

6) Year-end closing and Swiss CO readiness

  • Cut-off corrections, accruals/deferrals, depreciation logic

  • Fixed asset schedule rebuild where needed

  • Annual accounts package prepared from reconciled books

How we deliver accounting clean-up (premium methodology)

1) Diagnostic and scoping (fast, structured)

We start with a controlled scan:

  • Which periods are affected (months/quarters/years)

  • What is missing (documents, statements, ledgers, prior filings)

  • Where the high-risk balances sit (cash, VAT, loans, equity)

  • What external stakeholders require (bank/audit/tax deadlines)

You receive a scope map: what must be rebuilt first and what can be handled later.

2) Data consolidation and evidence standards

Clean-up fails when documents remain scattered. We create one evidence standard:

  • transaction → invoice/contract → payment evidence → posting rule

  • consistent naming and indexing so your file is review-ready

3) Rebuild and corrections by period

We reconstruct each period in a repeatable sequence:

  • rebuild ledgers

  • reconcile banks

  • fix classification

  • post corrections with a change log

  • tie out control accounts (VAT, payroll, clearing accounts)

4) Reconciliations and support pack

For each restored period (and especially for year-end), we produce:

  • reconciliation schedules (cash, AR/AP, loans, equity, VAT)

  • an exception log showing what was missing and how it was resolved

  • an evidence index for material items

5) Back filings (only after the books are stable)

Once the accounting baseline is defensible, we complete back filings:

  • annual accounts (Swiss CO)

  • corporate tax returns and supporting schedules

  • VAT corrections (if applicable)

  • audit coordination file if an auditor is involved

6) Stabilisation plan so it does not repeat

The final step is operational:

  • monthly/quarterly close checklist

  • documentation rules

  • approvals for unusual transactions

  • a reporting cadence that matches your business reality

This is what turns a clean-up project into a long-term compliance system.

What you receive (deliverables)

A premium clean-up engagement typically delivers:

  • Restored bookkeeping for the agreed periods

  • Full reconciliation pack (bank, AR/AP, loans, equity, VAT where applicable)

  • Year-end schedules and Swiss CO annual accounts where required

  • Back filings package (tax/VAT corrections where in scope)

  • Evidence index and structured archive

  • Ongoing process blueprint (close checklist and documentation standards)

These deliverables are built to satisfy banks, auditors, and tax workflows—not only internal recordkeeping.

Premium pricing approach (what drives cost)

Clean-up pricing is driven by complexity, not only number of months. Key drivers:

  • number of bank accounts and payment channels

  • missing documentation level (and ability to retrieve it)

  • VAT registration and complexity (cross-border, multiple rates, recurring errors)

  • payroll presence and quality of payroll outputs

  • intercompany/shareholder flows and unclear postings

  • number of years impacted and whether year-end accounts must be rebuilt

  • urgency (bank/audit deadlines)

Typical premium ranges:

  • Light clean-up (1–2 quarters, good documentation): CHF 7,500–20,000

  • Standard recovery (6–12 months, mixed quality records): CHF 20,000–65,000

  • Multi-year reconstruction, VAT complexity, payroll, intercompany: CHF 65,000–200,000+

Where needed, we structure the engagement in phases so you regain compliance quickly, then deepen reporting quality.

Frequently asked questions (FAQ)

1) Can you clean up accounts prepared by another provider?
Yes. We stabilise the records, rebuild evidence trails, and implement a controlled handover structure so you are not dependent on fragmented access.

2) Do you need all documents to start?
No, but missing evidence increases time and risk. We start with what exists, create an exception list, and prioritise the items that materially affect compliance and stakeholder scrutiny.

3) How do you prevent future corrections after the clean-up?
We implement a close checklist, documentation standards, and posting rules—so routine operations remain consistent and reconciled.

4) Can you combine clean-up with ongoing bookkeeping afterward?
Yes. Many companies transition directly into monthly or quarterly bookkeeping once the baseline is restored.

5) What if VAT returns were filed incorrectly?
We reconcile VAT control accounts to filings and ledgers, quantify differences, and propose a controlled correction path consistent with your compliance profile.

6) We have shareholder expenses mixed in the accounts—can you fix it?
Yes. We separate business vs shareholder items, rebuild support where possible, and correct classification to reduce future tax and governance risk.

7) Can this support an upcoming audit?
Yes. Audit readiness is one of the most common reasons for clean-up. We prepare reconciliation packs and evidence indexes that auditors can work through efficiently.

8) What is the first step to begin?
A short diagnostic: legal form, canton, affected periods, VAT/payroll status, bank accounts, transaction volume, and what deadlines are driving the project.

Why companies choose Yudey Switzerland

  • Recovery-first methodology: rebuild, reconcile, then file

  • Premium documentation standards suitable for banks and auditors

  • Cross-border awareness for groups, subsidiaries, and intercompany flows

  • Clear project control: scope map, period-by-period delivery, exception logs

  • Stabilisation built in: close checklist and process discipline after recovery

Request a clean-up assessment

If your Swiss GmbH/AG has missing periods, inconsistent VAT, unresolved balances, or upcoming bank/audit pressure, share the affected time range, VAT/payroll status, and transaction volume. We will propose a premium scope with a controlled timeline, deliverables, and a stabilisation plan.