Minus the time they have already served, it means the trio could be eligible for release by early 2026.
Stocker, Collyer and Float could have faced the death penalty – the heaviest punishment for taking part in a drug transaction under Indonesian law.
Collyer and Stocker were caught with 17 packages of cocaine, with a value of roughly £300,000.
The BBC’s US partner CBS previously quoted the AFP news agency as saying Balinese authorities believe the cocaine was hidden in packets of Angel Delight, a powdered dessert mixture.
Indonesia hands out severe punishments for drug smuggling and has previously executed foreigners, but it has upheld a temporary halt on the death sentence since 2017.
Indonesian president Prabowo Subianto’s administration previously moved to repatriate several high-profile inmates, all sentenced for drug offences, back to their home countries.