Bookkeeping client offboarding checklist

Whether the client left, you ended it, or the business closed, the process is the same. Work through it in order.

1. Confirm the ending in writing

• Confirm the final date and what is included up to it.
• Confirm the notice period being applied, referencing the engagement letter.
• State what will be delivered as part of the handover, and by when.
• State the final invoicing position clearly.

2. Complete the final work

• Close the final period to your normal standard — do not leave it half done.
• Reconcile every bank and credit card account to the last available statement.
• Post any outstanding adjusting entries.
• Clear or clearly document anything sitting in suspense or holding accounts.
• Attach outstanding documentation to the transactions it supports.
• Produce final reports for the period.

3. Build the handover pack

• A short summary of where the books stand — last reconciled date, last closed period.
• A list of open items, unresolved questions and pending client answers.
• Working papers and any reconciliations you maintain outside the ledger.
• The chart of accounts with notes on any non-obvious conventions you used.
• A list of recurring transactions, rules and automations set up in the software.
• Client-specific quirks — how a particular payment platform behaves, how an owner's personal spending is handled.
• Contacts: the accountant, payroll provider, and anyone else in the loop.
• Copies of documents you hold that the client may not, particularly anything you collected directly.

The quirks list is the part that gets skipped and the part successors value most. Everything you know that is not written down anywhere is exactly what makes the next person's first month hard.

4. Handle software and access

• Confirm the client has full owner-level access in their own name before you change anything.
• Transfer any subscription in your name that the client is meant to keep, or confirm they have set up their own.
• Remove your team's user access — all of it, not just yours.
• Disconnect any integrations you own or that run through your accounts.
• Cancel anything you were paying for on their behalf, on a stated date.
• Confirm bank feed connections are in the client's name, not yours.

5. Data retention and deletion

• Know your retention obligation. Professional and legal requirements vary; do not delete on instinct.
• Keep what you must, securely, and for the required period only.
• Delete what you should not keep, including client documents in shared drives, email attachments and collection tools.
• Document what you retained and why, in one line.
• Revoke your own access to their systems — leaving a login active for a former client is a real risk to you.

6. Settle up

• Issue the final invoice on the agreed basis.
• Refund any prepaid fees for work not performed, if applicable.
• Never withhold records as leverage over payment — it escalates fast and reflects badly regardless of who is right.
• If payment is genuinely disputed, deal with it as a separate matter from the handover.

7. Ask two questions on the way out

If the client left voluntarily, this is the most useful information you will get all year — and they are unusually willing to answer it now:

• "What made you decide to move?" The answer is often not price.
• "What would have kept you?" Frequently something small and fixable that nobody mentioned at the time.

Do not argue with the answers. Note them, thank them, and look at whether the same thing is true of anyone still on your list.