Another option... how far are you from the Romanian border?
If you're really interested to save those ~5/10% without moving too far, just move over the border and start a romanian Micro-enterprise and pay around 5-10% overall (including pension/social ), 100% legal.
But don't deal with stuff yourself, it's much better when you have a local law firm help you for the bank opening etc
Scroll down here and see the various options RO vs BG: Taxes - Example calculations
If you're really interested to save those ~5/10% without moving too far, just move over the border and start a romanian Micro-enterprise and pay around 5-10% overall (including pension/social ), 100% legal.
But don't deal with stuff yourself, it's much better when you have a local law firm help you for the bank opening etc
Scroll down here and see the various options RO vs BG: Taxes - Example calculations