Can Prop. 47 change the amount of court-ordered fines I owe?

Maybe, but the change is not automatic and the courts have not yet said whether fine reductions should be allowed. Under the language of Prop. 47, a conviction that has been reduced to a misdemeanor should be considered a misdemeanor “for all purposes”. Since the maximum fines for misdemeanors are usually lower than they are for felonies, it follows that the sentencing court may be willing to reduce your fines to reflect the change in your conviction. If you have completed your sentence and are looking to have one or more felonies reduced to misdemeanors under Prop. 47, you may want to request a hearing, even though one is not required, so you can ask the judge to reduce your fines.