I paid for 20 hours this month and used eight. Do the rest disappear?

Your agency or virtual assistant sends a monthly report: eight hours used from a twenty-hour package. You expected twelve hours of credit. They say the monthly fee reserved their time and the balance expires.

Both descriptions can sound plausible. The answer starts with the actual service agreement, including the proposal and any terms it incorporates. This guide concerns ordinary agency, consulting and support retainers, not legal-client trust accounts or other regulated retainers.

Identify what you bought

A monthly fee is a billing arrangement. It does not fully describe the service.

Do not convert every arrangement into an hourly credit. If the agreement buys four completed reports, the useful question is whether those reports were delivered. If it reserves twenty hours, find out how you were expected to request and schedule them.

There are real offers with explicit expiry: Cascade Virtual PA's published retainer FAQs describe monthly reserved hours that do not roll over. That is one provider's stated arrangement, checked on 15 September 2026, not proof that all retainers work that way or that every expiry term is enforceable.

Turn “rollover” into a usable rule

Look for four details: how many hours carry forward, how long they last, which hours are used first and whether the provider has capacity to fulfil them.

Here are three fictional treatments of the same twenty-hour month with eight hours used:

In the third example, imagine you use ten hours during the next month. If the agreement uses the old balance first, two carried hours expire and twenty newer hours remain, subject to their own expiry rule. If new hours are used first, the outcome differs. The order matters.

Also ask whether rollover means “credit on the account” or a guarantee that all those hours can be delivered within your preferred week. Banking thirty-two hours is little help if requests still require long lead times and you have an immediate deadline.

Check why the hours went unused

There is a meaningful difference between not requesting work and requesting in-scope work on time that the provider could not deliver. Keep the requests and responses so the conversation is about what happened.

Before accepting a usage total, ask what it includes: meetings, email, project management, research, revisions and time rounding. An eight-hour production task plus four hours of agreed meetings is a different balance from eight hours in total.

Then separate three questions:

1. Is the usage report correct under the agreement?
2. Was the promised service or availability provided?
3. What happens to a genuine unused balance?

A provider-capacity problem should not be waved away as ordinary unused time. Conversely, choosing not to assign work does not automatically create a refund entitlement. The wording, circumstances and applicable law still matter.

Ask for the balance and next month's plan together

Use this as a fictional starting point:

The report shows eight hours used from our twenty-hour monthly retainer. Could you confirm the tasks and other time included, and point me to the term dealing with the remaining twelve hours?

If any hours carry forward, please confirm their expiry date, whether they are used before the new allocation, and how much work we can schedule next month. I would also like to review the package size before the next renewal because our recent workload has been lower than expected.

If a timely request was declined, add the task and date and ask how that affects the balance. Do not describe time as unrequested when you have evidence that it was requested and unavailable.

Decide whether to renew, resize or change the arrangement

Use the last few months' actual workload to choose the next arrangement. A smaller retainer may fit predictable baseline work; hourly support may fit irregular tasks; a defined project may fit one clear deliverable. Compare response times and access as well as nominal hourly cost.

Check the notice deadline before assuming a smaller package can start next month. An agreement can combine a monthly allocation with a longer minimum commitment. The monthly-payments guide explains that separate billing-versus-term question.

When comparing alternatives, use a common scope and record the unknowns in the quote-comparison worksheet. A lower headline price is not a saving if the tasks you need are excluded or the available turnaround does not fit.