If you own a website, you probably monetize it by running AdSense ads from Google. How much you make, and how much Google pays you every month depends, of course, on the popularity of the website, number of visitors, and how many clicks you get.
Longtime AdSense publishers know that Google will regularly (in near-real-time, daily and monthly) deduct money from your estimated earnings for what it considers invalid clicks and traffic.
So at the end of a month, your finalized earnings could be lower than the estimated earnings. I found out that even after you have been paid for a previous month, Google could still dock you for that month for invalid clicks and traffic. In other words, you could owe Google money.
How do you know when that happens?
Simple. You will see an amount in brackets under the finalized earnings column. When you see that, don’t panic. Google will not request a check from you. The amount, usually small, will be deducted from the current month’s earning.
Yep, $0.40 is what I owed Google from the month this screen shot was taken from.