i understood the ferengis didn't believe in taxes? so, how would the 'state' pay for a military? unlike the feds, romulans, klingons etc ferenginar doesn't seem to be an empire, but a single muddy planet. according to an st encyclopedia, the d'kora class was roughly a match for the galaxy ships, but the ferengi had no more than some 200 of them. their whole fleet was less than 1/10 the size of starfleet.
Ferenginar does have taxes. The Ferengi Alliance apparently taxes every single interaction with the government. These taxes, however, aren't called taxes. They're generally thought of as bribes. The Ferengi government runs on a complex system of mandatory bribes, which trickle upward towards the Grand Nagus, with everyone along the way taking their personal cut. From the Nagus, the money flows down again.
Maintaining one's rank requires keeping all the necessary fees paid in full and advancing in rank requires even greater payment. Someone who wishes to be Daimon of a Ferengi starship, for example, must be able to afford the cost of both purchasing the rank and leasing the ship from the Ferengi government. This way, only the most able of traders can afford to be D'kora captains for very long.