how would you set this up in an business invoicing customers, how can them money be distributed into such a setup ?1) Transparent partnerships which are unincorporated and can be anonymous as well.
Such entities are treated as tax transparent.
In case you set up such a partnership that is managed by an Estonian company, then this Estonian company pays tax only when it distributes dividends (and not when it receives profits from partnership). The other partner can be a person or entity not exposed to tax, potentially limiting its (and overall) tax exposure to zero.