Believe it or not... there is no "per day" or "maximum"... the fine is fixed, it doesn't matter you are late one day or 10 month. But yes... on a good day they might give you a "discount"... as usual it's all up to the officer.
Only if you get arrested, then this 200 baht come on top... but that's not what we are talking about right now.
I'm serious... a friend was charged just 1,000 bath for three days late... he was a the hospital after an accident. Even the IOs have a good day... sometimes... 😎
Yep... that's for sure... also everytime you changed your address... and sometimes even because the online system just don't want to accept your application for no reason... 😁