Hi, Does anyone know how does google count the last amount they will pay. Lets say you earn $1000/month, and then final earnings goes down to $950 or so. So the question is - does anyone know how google counts this?
IIRC, the difference is from invalid activity, invalid traffic, and advertisers that didnt pay their bill that Google deducts from your account.
Yes the reason for that is usually invalid click activities, that is most likely the reason your finalised earnings are significantly lower that estimated earnings.
I agree with the others, mostly its because you've clicked yourself, or someone was just clicking for fun.
Invalid clicks - people spam click on your ads - or your clicked on your own ads final earning - invalid clicks earning = final earning.