In some instances, offline transactions or Revolut fees for services such as Premium can lead to your balance dropping below zero.
According to Revolut’s Terms & Conditions, if for any reason you have a negative balance, you agree to immediately add the required amount to correct the negative balance.
Revolut will notify you following a negative balance, and allow you up to 7 business days to add money. After that, Revolut will attempt to correct the balance automatically by exchanging funds between accounts or adding money from your registered card.
Add money automatically to keep your balance positive!