As I understand it. If you rent out your condo to a person whose company pays the rent, you have to pay tax on your revenue. The company payments to you can be split up into rent for the condo and a fee for the furniture. The tax on the condo rental is 12% and there is no tax on the furniture rental.

Can anybody confirm if this is correct?

Tax is payable on all condo rental if you earn enough from it BUT most people simply dont declare it.

op

I dont know but if what you say is the case. One month condo rental 1baht and furniture rental 30,000 baht.... problem legally solved...

It depends on who you're renting from. Previously I rented from what appeared to be a company who owned a bunch of apartments in at least one building in Bangkok.

They split the total amount between apartment rent and 'furniture rent' so it looked like I was renting the furniture for about half of the monthly fee, I figured it was probably for tax purposes.

The Revenue Department will not allow rental of property at 1 baht and the rest for furniture. The division must be reasonable and I am not sure what their current interpretation of this is but it cannot be a piss take.