bail bond company takes non-refundable 10% of the bail amount

If the defendant pays 100% bail in chash himself, when the case is over, he gets all 100% bail back.

If the defendant goes to a bail bonds company (bail bondsman), he pays 10% of the bail, and the bail bondsman put in the rest 90%.  When the case is over, the bail bondsman keeps 100% to himself.  This is how he makes money.

Of course, if the defendant skips town, the bail bondsman lost his 90% of the bail.  The bondsman will hire a bounty hunter to go find you.