tax on property

It depends entirely on the double-taxation treaty between Belgium and the country in question.

I moved a large sum of money from my country of origin into Belgium some years ago and paid it into my Belgian bank.
There was no question of how I had come by the money - sale of property, inheritance from granny, won the lottery or whatever. I only had to prove that I got it legally. I was not taxed on it.
I assume that your Belgian bank will be involved at some stage so I suggest that you ask them. For sure they will know as - if it is over €10K - they have to report the fact.

Bullseye!

What are either of you two (very rich) beautiful ladies doing for Valentines Day? ;)

J is a lady?!

MIMI - that sounds even better! But I'm assuming you're still female??