Stop Blowing Through Retainers: Track Hours Against Client Bugs

Every agency that runs retainers knows the feeling. It's the 28th, you tot up the month, and one client has burned through their hours and then some. The work's already done. The conversation about it is now awkward, retroactive, and probably unbillable.

The frustrating part is that it was never a sudden problem. The retainer didn't blow on the 28th — it crept there all month, one "quick fix" at a time, and nobody was watching the meter.

Why Retainers Quietly Go Over

Retainer overruns aren't usually caused by one big job. They're caused by the absence of a running total:

Small fixes don't feel like spend. A 20-minute bug here, a 40-minute one there. None of them feel worth logging, and together they're half the budget.
The budget lives in someone's head. "We've probably got plenty left this month" is a feeling, not a number — and it's almost always wrong by the third week.
Nobody sees it until invoicing. By the time the hours are tallied, the month is over. You find out you went over exactly when you can no longer prevent it.

A retainer only works as a profit model if you can see it being consumed while it's being consumed.

What Good Retainer Visibility Looks Like

You don't need elaborate timesheets. You need three things visible at a glance, per client:

What's allocated. The hours (or points) the retainer covers this period.
What's been consumed. Time logged against this client's bugs so far — updated as work happens, not at month-end.
The pace. Are you on track, or are you burning faster than the calendar? Two weeks in with 80% of the budget gone is a flashing light, and you want to see it on day 14, not day 28.

With those three, the end-of-month surprise becomes a mid-month heads-up. You can have the "we're approaching your hours for the month" conversation before the overrun — which is a completely different, far more professional conversation than the one after.

Logging Time Without the Overhead

The reason agencies don't track retainer burn is that traditional time tracking is a chore nobody keeps up. The fix is to attach time to the work you're already managing — the bug itself — rather than a separate timesheet app.

Log a few minutes against a bug when you close it. That's it. No daily timesheet ritual, no context-switching. The time rolls up to the client automatically.

How Lantern Helps

Lantern tracks retainer burn as a by-product of fixing bugs, not a separate admin task.

Set a retainer per client. Give each client a monthly allocation in hours or points. Lantern knows their budget.

Log time on the issue. When you resolve a bug, log the time it took right there. A gentle prompt offers to capture it before you close — dismiss it if you'd rather not. No timesheet to maintain.

See the burn build. Each client shows how much of the retainer is consumed and how fast, with a quiet warning before they're on course to run over — amber while there's still room to act, not red after the fact. If you estimate in points, Lantern converts to hours for you, so budget and work speak the same language.

It sits alongside the delivery forecast, so the same dashboard tells you both when a client's work will clear and whether the retainer covers it. See the estimation and forecasting guide.

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