I thought that the daily maximum reputation was 200, right?
But today I got 205. How is that possible?
To add to Pearson's excellent theoretical answer, you can see specifically where you got the rep in 2 ways:
Your reputation tab on user page:
Note the green square around the last line's rep (15) - that "+15 accept" is what caused you to get 205. Green background indicates that this rep doesn't get capped.