A client offboarding workflow for closing out retainers

Client offboarding is where small omissions become expensive. A task stays open, the last week of work never makes it onto an invoice, or the next account lead cannot find why a decision was made. A short, repeatable closeout workflow reduces those risks without turning the final client conversation into a billing dispute.

Kato can help keep client records, tasks, meetings, retainers and invoices together. Its Pro plan includes time tracking and retainer management. Use that context to coordinate the closeout, but treat payment confirmation and record retention as separate checks: an invoice sent is not an invoice paid, and a workspace record is not a substitute for your agency’s approved archive process.

1. Set a clear cutoff

Start by confirming the final service date, what delivery remains, and who is responsible for each remaining item. Put those decisions in the client context your team uses in Kato, then create or update closeout tasks with owners and due dates. Tasks can carry statuses, priorities and due dates, and can be linked to client records.

Make the cutoff explicit. For example: work completed through a particular date belongs to the current retainer period; new requests after that date need separate approval. The specific terms should come from the client agreement, not from a general template. If the client expects a handoff, define what is included, who receives it and when.

2. Find work that has not been billed

Before you calculate the final amount, review work through the cutoff date. Check completed and open tasks, meeting follow-ups, client commitments and any time your team has recorded. In Kato Pro, use time tracking and retainer management to review usage against the retainer. Do not assume a task marked complete has been entered as time, or that every recorded hour is billable under the agreement.

Ask the account owner and delivery lead to confirm the review. Look for late-stage revisions, support requests, calls, and work performed by people who are not usually responsible for billing. Resolve discrepancies while the people involved still remember the work. If the agreement uses a fixed fee, compare the remaining scope and delivery obligations with the agreed terms rather than treating hours alone as the invoice amount. That distinction matters in fixed-fee work, where billing discipline depends on clear scope and timely account context, as discussed in this look at operating signals for agency retainers.

3. Reconcile the retainer and prepare the final bill

Compare retainer usage, remaining balance and any approved additional work with the agreement. Record what the client has already paid, what remains available, and whether unused value is refundable, transferable or handled another way. Follow the contract and your finance policy; do not infer a refund or carryover from the workspace balance alone.

Once the amount is approved internally, Kato lets users compose and email one-off invoices. Use that option for a final invoice when appropriate. Check the client name, billing details, description, period covered, amount and payment terms before sending. If the final amount needs a credit, adjustment or a different billing treatment, confirm the process with finance before issuing anything.

Then verify settlement in the payment or accounting process your agency uses. Keep the invoice and its payment status distinct in your closeout checklist. If payment is outstanding, assign someone to follow up and set a date for the next check. Do not mark the account financially closed merely because the invoice was emailed.

4. Close delivery and preserve context

Confirm that the client has received the agreed files, credentials or handoff materials through the channels your team is authorized to use. Check that access changes, data handling and any remaining support obligations follow the contract and your security policy. Assign each action to a named owner; “the team” is not an owner.

Next, review the Kato client record and project history. Make sure key decisions, final deliverables, meeting notes and unresolved commitments are findable for colleagues who may need to answer a later question. Ask Kato can answer context-aware workspace questions about a client, recent decisions, account activity or follow-ups. Use it to surface what may need attention, then verify important details against the underlying record before you close the account.

For archiving, follow your organization’s retention and access rules. Keep the relevant client and project context available according to those rules, and use your team’s approved archive process. Do not assume that closing delivery or completing a task automatically archives a record or changes access.

5. Confirm closure with the client

Send a concise written summary: what was delivered, what was invoiced, whether payment remains due, and who to contact about any agreed transition or support. Internally, check off the closeout tasks only after their owners confirm completion. Leave a clear note about any open financial or contractual item and who will handle it.

A useful agency offboarding checklist is deliberately small: cutoff agreed, work and time reviewed, retainer reconciled, final invoice checked and sent, payment status verified, handoff completed, records preserved, and follow-ups assigned. Repeat the same sequence for each client, while letting the agreement—not a generic checklist—determine the financial and delivery details.