How to Do a Weekly Billing Review in Under 20 Minutes
A simple Friday routine that closes the gap between hours worked and hours invoiced before the week disappears from memory.
The Week You Forget Is the Week You Undercharge
Most billing errors happen because of time, not math. You do the work, a week passes, and by the time you build the invoice you cannot remember what happened on Tuesday. So you bill conservatively. Which means you bill less than you earned.
A short weekly review stops that. You spend twenty minutes on Friday and the following invoice is accurate instead of approximate.
What the Review Is Not
It is not a deep accounting session. You are not doing month-end reconciliation. You are just checking that the week is clean before you close it out.
You are looking for three things: missing time entries, mislabeled entries, and tasks you did but forgot to track.
Step One: Open the Week View
In Time-Trak, pull up the current week. Look at each day in sequence. Monday through Friday. You are scanning for gaps.
A day with no logged hours is a red flag unless you know you had a day off. A day with only one or two short entries when you were clearly busy means something was missed.
Do not try to remember the whole week at once. Go day by day. It takes about five minutes.
Step Two: Check Your Calendar Against Your Logs
Open your calendar for the week and compare it to what is in your time log. Every meeting, call, or scheduled work block should correspond to a time entry.
This is where you find the meeting you attended but never logged. Or the ninety-minute call that shows up as "thirty minutes, client check-in" because you forgot to keep the timer running.
Fix each one while your calendar is open. Do not close the tab and promise yourself you will come back.
Step Three: Review Screenshot Records
If you have automatic screenshots enabled in Time-Trak, spend two minutes scrolling through this week's captures. They are timestamped and tied to specific work sessions.
You are not auditing yourself. You are using them as a memory prompt. A screenshot from 3pm on Wednesday might remind you that you spent an hour on a task you never logged because you got pulled into something else immediately after.
This is one of the most underused parts of having screenshots enabled. They are not just for client disputes. They are useful for reconstructing your own week.
Step Four: Check Every Entry Description
Scroll through your time entries and read the descriptions. If you wrote "work" or "misc" or nothing at all, fix it now.
Write what you actually did. One sentence. Enough that if a client asked about that entry on an invoice, you could explain it in ten seconds.
Vague entries are easy to write and hard to invoice. Specific entries take an extra thirty seconds and they defend themselves.
Step Five: Flag Anything That Needs a Decision
Some things you find in the review are not errors. They are questions. A task that might be billable but you are not sure. A client conversation that went long and you did not log it because it felt awkward to bill for it.
Do not skip these. Flag them. Write them down. Make the billing decision before you move on.
If you keep skipping the same type of task every week, that is a signal that you need to decide once and for all whether it is billable, and then build that decision into your tracking habit.
Close the Week Clean
Twenty minutes. That is all this takes if you do it consistently.
The alternative is building invoices from memory, missing entries, and billing less than you earned. Over a month that adds up to a meaningful number. Over a year it is significant.
Friday afternoon is the right time. The week is fresh. The entries are close. The fixes take seconds instead of guesswork.
Track your time, bill every minute.
Time-Trak is a native Mac and Windows time tracker with a floating timer, automatic screenshots, and one-click invoicing.
Free during beta.
Download Time-Trak →macOS + Windows · Floating widget · Auto screenshots