Interest can be added from the moment the judgment is entered in the court clerk's record until you pay the judgment in full. A judgment is a court order that is the decision of a lawsuit. If a judgment is handed down against you, the debt collector will have stronger tools, such as garnishment, to collect the debt. Having a sentence handed down does not guarantee that you will collect money.
The court is not responsible for collecting the judgment. If the debtor of the judgment (the losing party) does not voluntarily pay the judgment to the creditor of the judgment (the winning party), the creditor of the judgment may attempt to collect the judgment through the judicial process. Voluntary payments from the judgment debtor can be accepted at any time.