Due to the Cross Guild giving those in position of Fleet Admiral a bounty of 5 crowns, Sakazuki essentially has the highest known active bounty so far, as well as the third highest known bounty in the series.
Here’s how the bounty system of Cross Guild works:
● FLEET ADMIRAL – 5 CROWNS
● ADMIRAL – 3 CROWNS
● VICE ADMIRAL – 5 STARS
● REAR ADMIRAL – 3 STARS
● CAPTAIN AND COMMODORE – 1 STAR
● FIELD OFFICERS (COMMANDER RANK AND BELOW) – 1,000,000 BERRIES
● COMPANY OFFICERS BELOW – 100,000 BERRIES
*1 CROWN = 10 STARS
*1 STAR = 100,000,000 BERRIES (100 MILLION)
So Akainu has a 5 Billion Bounty!