In many cases, customers will likely pay an invoice online or be auto-billed. However, if an account ends up with more than one unpaid and/or overdue invoice, you can take a payment from the customer and apply it across multiple invoices.

Navigate to Storage -> Accounts (or click here to go directly to the page), and select an account.

First, click Add Payment in the Invoices, Credits, & Payments section.

Next, select the payment method. The Amount field will automatically populate with the total amount due across all unpaid and/or overdue invoices.

Then, click Next.

Next, enter the customer's payment information and click Make Payment.

Then, select the invoices you wish to apply the payment to, and click Apply Payment.

Note: All unpaid and/or overdue invoices will be automatically selected. You can deselect or change the amounts as needed.