Invvest handles negative balances perfectly. This is useful if you want to add an overdrawn account or an amount owed on a credit card.
If you add your account in Synchronization mode, you don’t need to do anything, and you will automatically see a negative amount in the balance column.
If you add your account in manual mode, you can enter a negative amount in the "Balance" field by adding a "-" sign in front of the amount.
