That community will be divided 50-50
All income falls into the community of goods. The only way to avoid this, is making a prenuptial agreement.
The Belgium law has a community of aquisitions.
What you owned before the marriage or what you inherited during the parriage of what was given to you only during the marriage, remains your own property. But all income even the income from your own property falls into the community of goods between you and your spouce. The only way to avoid this, is making a prenuptial agreement.
Texas - Belgie