Why mandate handover requires rigorous planning
Terminating or transferring a fiduciary mandate is not a simple administrative formality. In Switzerland, the fiduciary firm often manages accounting, tax, payroll, banking relationships, and deadlines with the FTA, OASI, and pension funds. A poorly coordinated handover can leave incomplete accounting entries, unfiled returns, signing powers still active, or missing documents — with direct consequences for the client and for the outgoing firm's professional liability.
The Code of Obligations governs the mandate (Art. 394 et seq. CO) and provides that, upon termination, the agent must return what was received and report on what was performed (Art. 400 CO). For a fiduciary firm, this translates into a structured, traceable, and documented accounting handover. Sending a ZIP archive is not enough: a protocol is required that covers data, deadlines, digital access, and operational continuity.
In this guide, we examine the differences between withdrawal, natural expiry, and transfer to a new fiduciary firm, the responsibilities of each party, typical timelines, and an operational checklist designed for Swiss fiduciary firms and business owners changing advisor — with practical references to digital accounting management using tools such as Accountex.
Withdrawal, expiry, or transfer: three different situations
Before starting the accounting handover, it is essential to define the legal nature of the termination. Each scenario involves different timelines, notice obligations, and levels of cooperation between the outgoing firm, the client, and — where applicable — the new fiduciary firm.
Ordinary withdrawal
The client and the fiduciary firm may revoke the mandate at any time under Art. 404 para. 1 CO — a mandatory rule that cannot be excluded by contract. The contract may, however, provide for an operational notice period for the handover; a party that withdraws at an inopportune time without justified grounds must compensate for damage under Art. 404 para. 2 CO. In practice, firms apply notice periods of 1–3 months; for complex mandates (accounting, tax, HR administration), at least 60–90 days is recommended to complete period-end closings and an orderly handover.
Natural expiry of the mandate
Some mandates have a fixed term or are tied to a financial year or a specific engagement (e.g. internal audit, accounting reorganisation). Upon expiry, the mandate ends without the need for notice, but the obligations of restitution and reporting remain fully valid. It is common for expiry to coincide with year-end closing: in that case, the handover must be planned before closing to avoid duplicate entries or unaccounted periods.
Transfer to a new fiduciary firm
The client appoints a successor and asks the outgoing fiduciary firm to cooperate in the handover. There is no legal obligation to accept the new fiduciary firm as the "heir" of the mandate, but the duty of professional diligence and contractual good faith require facilitating the transition, especially when tax deadlines, payroll, or social security obligations are at stake. A well-managed transfer involves a tripartite protocol: client, outgoing firm, incoming firm.
Revocation in exceptional situations
In exceptional situations — client insolvency, non-payment of fees, documented loss of trust, inability to cooperate — revocation remains possible under Art. 404 para. 1 CO; where justified grounds exist, compensation for withdrawal at an inopportune time generally does not apply (Art. 404 para. 2 CO). Even in such cases, the accounting handover cannot be suspended: the agent must deliver what has already been produced, flag imminent deadlines, and must not withhold original documents as security for payment (Art. 400 CO), a practice that exposes the firm to civil and disciplinary liability.
Responsibilities of the outgoing fiduciary firm and the successor
Termination of the mandate does not automatically extinguish obligations arising from the period of management. On the contrary: it is precisely during the handover that the risk of legal, tax, and accounting gaps is concentrated.
Obligations of the outgoing firm
- Return original documents, access rights, and working copies within agreed deadlines
- Complete entries up to the agreed cut-off date
- Prepare a handover report with work status, open deadlines, and critical notes
- Respond to clarification requests from the new fiduciary firm for a reasonable period
- Revoke powers of attorney, bank access, and tax delegations no longer valid
- Retain documentation in accordance with legal obligations and professional rules
Obligations of the incoming firm
- Verify the integrity of received data and the consistency of opening balances
- Identify imminent deadlines (VAT, withholding tax, OASI, BVG, year-end closing)
- Formalise a new mandate contract with a clear scope and responsibilities
- Promptly request access to banks, FTA, cantonal tax offices, and social security portals
- Document any irregularities inherited from the previous mandate
- Inform the client of any risks or corrective actions required
Role of the client
- Notify all relevant counterparties in writing of the termination or change of fiduciary firm
- Define an accounting cut-off date and comply with document delivery timelines
- Authorise the exchange of information between the two firms, in compliance with data protection rules
- Verify revocation of signing powers and update of delegations with banks and authorities
- Ensure that outstanding invoices from the outgoing firm are paid without conditioning delivery
Liabilities that survive the mandate
Errors committed during the mandate — incorrect tax returns, late contributions, non-compliant accounting entries — remain attributable to the firm that actually performed them, subject to shared liability of the client for incomplete information. The handover does not retroactively transfer professional liability. For this reason, the final report and inventory of open matters are essential documents for defining the scope of each mandate.
The accounting handover: cut-off, data, and continuity
The operational core of every fiduciary termination is the accounting handover. The objective is to ensure that the new manager — or the client, if services are brought in-house — can continue without interruption, with verifiable balances and a complete history.
1. Define the cut-off date
The cut-off date marks the last day of operational responsibility of the outgoing firm. It may coincide with the end of a month, a VAT quarter, or the financial year-end. All subsequent transactions are recorded by the new fiduciary firm or the client. Documenting the date in writing avoids disputes over who must correct a late invoice or an unreconciled bank payment.
For companies with a 31 December year-end, a mid-year handover requires an interim balance sheet or at least a trial balance with provisional balance sheet and income statement, plus a list of open items.
2. Export and deliver accounting data
The handover package should include, at a minimum:
- Chart of accounts and any custom mappings
- General ledger and entries up to cut-off, in native software format and standard export (CSV, Excel, PDF)
- Bank statements and bank reconciliation schedule
- VAT register, filed returns, and outstanding credits/differences
- Customer, supplier, and employee account ledgers
- Depreciable fixed assets with schedule and purchase documentation
- Supporting documents organised by period and category
With a cloud platform such as Accountex, the handover can take place through transfer of the accounting environment or structured export, reducing the risk of lost attachments or unlinked entries. It is important to verify that every entry has the associated supporting document and that closing balances match bank statements and the last filed tax return.
3. Cross-check of balances
The new fiduciary firm must perform an opening verification within a few days of receipt: comparison of bank balances, customer/supplier items, VAT balance, tax instalments, payroll credits, and OASI/BVG position. Any differences must be reported in writing to the outgoing firm with a request for correction or explanation. Do not delay: after 30 days, disputes become harder to resolve and the risk of duplicate accounting increases.
4. Continuity of recurring entries
Depreciation, lease instalments, provisions, subscriptions, software licences, rent, and salaries must be explicitly mapped in the handover document. Indicate which automatic entries were active, with what frequency, and from which date the new manager assumes them. A common error is forgetting an annual depreciation already started or a scheduled quarterly VAT adjustment: this generates variances that only emerge at year-end.
Digital access, data protection, and revocation of delegations
A modern accounting handover is not only about paper and files: it involves e-banking, tax portals, electronic signatures, corporate email accounts, cloud software, and shared credentials. Access management is one of the most underestimated — and riskiest — aspects.
Complete inventory of access rights
Prepare a list of all systems to which the outgoing firm had access: bank accounts, corporate credit cards, FTA e-filing, cantonal portals, cloud accounting, document archive, qualified digital signature, payroll platforms. For each, indicate the level of access (read-only, operational, signing) and the status at the time of handover.
Compliance with the FADP (nFADP)
The transfer of personal and accounting data between two fiduciary firms requires a legal basis: as a rule, the client's mandate and, if necessary, consent or a specific declaration authorising the exchange of information. Delete local copies on laptops, personal backups, and shared folders once the handover is complete. Retention beyond what is necessary exposes the firm to violations of data protection law.
Prompt revocation of powers and powers of attorney
The client must revoke in writing the bank powers of attorney and collective signing rights of the outgoing fiduciary firm. As long as powers remain active, the firm could theoretically operate on the accounts — and the client would remain exposed even after the end of the relationship. Similarly, update contact persons with the FTA, OASI compensation offices, and occupational pension institutions.
Typical timeline: 90 days for an orderly handover
For an average mandate covering accounting, VAT, and tax, the table below represents an effective operational sequence. Adapt timelines to client complexity and the tax calendar.
| Phase | Timing | Key actions |
|---|---|---|
| Communication and planning | Day 0–15 | Written notice, cut-off definition, appointment of new fiduciary firm, tripartite kick-off, preliminary inventory of open matters |
| Outgoing period closing | Day 15–45 | Completion of entries, bank reconciliations, last VAT return for the period, preparation of trial balance |
| Data delivery | Day 45–60 | Accounting export, document transfer, handover report, delivery of credentials and access to the new fiduciary firm |
| Verification and takeover | Day 60–75 | Balance check, reporting of differences, activation of recurring entries, update of tax and social security delegations |
| Revocation and formal closure | Day 75–90 | Revocation of bank access and signatures, deletion of local data, final invoicing, archiving of mandate file |
Operational checklist: avoiding legal and accounting gaps
Use this checklist as the basis for the firm's internal protocol. Each item should be checked off, dated, and archived in the mandate termination file.
Mandate contract and withdrawal/acceptance letter archived
Verify clauses on notice period, cut-off, post-mandate obligations, and handover fees.
Cut-off date agreed in writing with the client
Align accounting, tax, and HR cut-off dates.
Complete general ledger up to cut-off with attached documents
Including fixed assets, instalments, adjustments, and period-end closing entries.
Trial balance with reconciled bank balances
Open customer/supplier items, list of instalments, notes on disputed items.
Handover report with deadlines and open matters
Pending returns, disputes, rulings, ongoing audits, notes on estimates and historical data.
Complete status of VAT and withholding tax obligations
Copies of returns, payments, credits, and updated or revoked delegations.
Complete payroll package if included in the mandate
Payslips, salary declarations, certificates, BVG policies, holiday balances, and portal access.
Revocation of bank powers of attorney and digital access of the outgoing firm
Written confirmation from the bank and deletion of credentials on all systems.
Authorisation for data transfer between firms compliant with the FADP
Documented in the client file; deletion of unnecessary copies.
Opening balance verification signed by the new fiduciary firm
Any reservations noted in writing within 30 days of delivery.
Final invoicing and settlement of receivables/payables
No withholding of original documents as security for payment.
Common errors and how to prevent them
Handover without a defined cut-off
Generates duplicate entries or accounting "gaps". Solution: written protocol with date and responsibility for each type of transaction.
Documents not linked to entries
The new fiduciary firm cannot reconstruct the history. Solution: software export with integrated digital attachments and document inventory.
Tax and bank delegations not revoked
Exposes the client to unauthorised transactions. Solution: revocation checklist with confirmation from counterparties within 90 days.
"Orphan" year-end closing
No one assumes responsibility for the financial statements. Solution: explicit transitional mandate or limited extension of the outgoing mandate until closing.
A disciplined handover protects all parties
Terminating or transferring a fiduciary mandate is an exercise in professional responsibility every bit as much as managing day-to-day accounting. A structured protocol — clear cut-off, complete accounting package, handover report, cross-check verification, and prompt revocation of access — protects the client from penalties and the outgoing firm from late disputes.
For firms adopting integrated digital tools, the handover becomes more traceable and less exposed to manual errors: entries, attachments, and deadlines remain in a single environment until the moment of transfer. Standardising the termination checklist as one standardises the onboarding of a new mandate is one of the most effective operational investments — and one of those most often postponed until the first problematic handover.
Accountex supports Swiss fiduciary firms and SMEs in day-to-day accounting management and data continuity: an orderly handover begins with orderly, up-to-date, and documented accounting every day of the mandate — not only in the final weeks before withdrawal.