Good accountant vs typical round the corner accountant

[Gregga]

As far as I know if I work in Thailand I have to pay tax (pretty obvious) but do I need to do it every month? Or it's just my smart accountant playing tricks on me (on silly farang) She charge me 2500 each month just for paying (making it all cool and nice written in Thai) my Personal tax + tax of my Thai employees. So I'm paying somewhere 10k each month 2500 of which is for just filling my papers by a accountant.
So here s my question If I simply pay the whole tax amount at the end of the year and save my money by not paying to accountant each month all year around is it acceptable in Thailand or how does it works here.

[ste860]

i have always paid mine monthly and if its late got a charge ,im sure its the same for social security too ,