The Work You Do After the Invoice Is Sent

You send the invoice. Project done. Except it is not.

Over the next two weeks, a handful of things trickle in. A question about one of the deliverables. A small fix they forgot to mention. A request to explain something to a new person on their team. A file in the wrong format that needs to be re-exported.

Each one takes fifteen to thirty minutes. You handle it because you are a professional and you want the client to be happy. And you bill none of it because the invoice is already out.

This is one of the most consistent money leaks in freelance work, and it is almost invisible.

Why This Happens

The invoice feels like a closing act. Once it is sent, you mentally close the project. New work that comes in after that point does not feel like billable work. It feels like finishing up.

But finishing up is still work. Your time still has value on a Wednesday afternoon after an invoice has been sent.

The other reason is friction. Going back to re-open an invoice, adding a line, re-sending it, feels like a bigger deal than just handling a quick request. So you absorb it. And then you do it again on the next one.

Start Tracking Post-Invoice Time Right Now

In your time tracker, keep the project open for a two-week period after the invoice goes out. Create a task called something like 'Post-delivery support' and start the timer every time something comes in.

Do not decide upfront whether you will bill it. Just track it.

At the end of those two weeks, look at the total. If it is under an hour, you can make a judgment call. If it is three hours, that is a different conversation.

When to Send a Supplemental Invoice

If the post-invoice work crosses a threshold you decide in advance, send a supplemental invoice. What that threshold is depends on your rate and your relationship with the client.

The key is that you decide the threshold before you start tracking, not after. Deciding after means you will always find a reason to let it go. Deciding before means you have a rule to follow instead of an awkward judgment call.

Some freelancers build a thirty-day support window into their contracts, explicitly, and bill anything outside it. That is cleaner and sets expectations before the project starts. But even if you do not have that in your contract right now, you can start tracking and invoicing consistently.

The Client Conversation

Clients rarely push back on post-invoice work if it is documented clearly. 'I tracked three hours of follow-up work over the two weeks after delivery. Here is what was covered.' That is a simple explanation with a clear record behind it.

What they push back on is a surprise charge that shows up with no context. The tracking is what provides the context.

What This Costs You Annually

If this happens on half your projects and averages two hours each, think about how many projects you close in a year. Even at eight projects, that is eight hours of unbilled work. At a fifty dollar hourly rate, that is four hundred dollars. At a hundred, eight hundred.

That number goes up every year you keep doing it.

The Timer Does Not Know the Invoice Is Sent

This is the mindset shift. Your timer does not care that the invoice went out. It just records work. Your job is to start it every time you do work, regardless of where the project stands administratively.

The review comes later. The billing decision comes later. But the tracking has to happen in the moment, or the data is gone.

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.

macOS + Windows · Floating widget · Auto screenshots