# Marking an Invoice as Paid

Here we show you how to mark an invoice as *paid*.

Once you have finalized and locked an invoice, it will show up as unpaid.

![Unpaid invoice in list](/assets/images/invoice-unpaid-list-a146010d516803fd6fa2ee15ac8a3124.png)

To mark it as paid, either click on the *money* button or open the menu and select **Register payment**.

Or open the corresponding invoice and click on the button **Add payment**.

A window with the summary will then open.

![Payment modal](/assets/images/payment-modal-2fae3b8d826ebad877289ef7ac70efa6.png)

Enter the payment date, amount and method. The payment method indicated on the invoice will be preselected.

If you enter an amount above or below the outstanding balance, you will need to input the reason for the difference.

Finally, click **Save**.