Retainer Rollover Hours: Set a Cap and Track Expiry Correctly

Identify what the retainer buys

An arrangement for reserved availability differs from a prepaid block of labor or a package of monthly deliverables. Explain which service you are selling before deciding what happens to unused time. The commercial treatment of unused hours, cancellation and refunds belongs in the agreement; a pricing calculator cannot determine enforceability.

Three possible designs are:

None automatically requires a standard discount or surcharge. Price the workload and availability you actually promise.

A policy that can be calculated

Consider this illustrative policy, subject to agreement and any applicable requirements:

• Allocate 10 new hours each calendar month.
• Carry at most four unused current-month hours into the next calendar month.
• Use the oldest carried hours first.
• Carried hours expire at the end of that next month and cannot carry again.
• Schedule work by mutual agreement within a maximum monthly availability of 14 hours.
• Quote work above the available balance before undertaking it.

“Next calendar month” is clearer here than alternating between 30 days and 60 days. The monthly maximum also makes the capacity promise explicit.

Worked ledger: oldest hours first

Assume the monthly fee is $1,500 and apply the illustrative policy exactly:

In March, five hours remain, but only four can carry, so one expires. In April, seven hours of work consume all four carried hours and three new hours. Seven new hours remain; four carry and three expire. Do not expire the March hours again after they have already been used.

Check the reconciliation: 60 hours allocated = 55 used + 4 expired + 1 still available. Fees total $9,000. Revenue per hour delivered so far is $9,000 ÷ 55 = $163.64, before costs, and there is still one carried hour available for future delivery. That rate does not measure the cost of holding capacity open.

Make the capacity decision across all clients

Four similar retainers would allocate 40 new hours per month and could allow as many as 56 hours of combined monthly work when each has four carried hours. A 40-hour delivery budget cannot honor that maximum without another scheduling arrangement.

Do not assume clients will redeem in different months. Test simultaneous usage, response commitments, leave and larger projects before promising the policy.

Send a statement the client can reconcile

Show the new allocation, carry-in by source month, hours used from each balance, expiry date, expired hours and carry-out. Pair the statement with a list of completed tasks. A single “remaining hours” figure hides which portion will expire.

If usage stays low, discuss whether the arrangement still meets the client's needs. If demand repeatedly exceeds the cap, compare a larger allocation with separately scheduled projects. Alter future terms through the agreed process; do not silently change a balance already promised.

The retainer calculator includes a rollover percentage input; it is not a month-by-month balance ledger. Read how to price a retainer for the wider pricing decision.