How do I charge interest to overdue client accounts?

Hi there, @office215.

I appreciate you for trying to seek help online about recording interest charges to overdue client accounts. I'm here to ensure you'll be able to track the charges accordingly.

You have a couple of options to charge interest to your customer's accounts or transactions. Here are the following:

• Create a separate invoice for the charge
• Add another line item on the past due invoice

To get started, set up an interest item through the Products and Services window.

1. Go to the Gear icon, then click on Products and Services.
2. Click New.
3. Choose either Non-inventory or Service.
4. Enter a desired name of the interest.
5. Choose an Income account to track the charge.
6. Tap on the Save and Close button.

Now, here's how you can add the item on the new invoice:

1. Go to the +New icon, then click on Invoice under Customers. 
2. Under the PRODUCT/SERVICE column, add the interest item.
3. Enter the amount manually in the AMOUNT tab.
4. Save the transaction.

On the other hand, you can follow these steps if you want to add interest to the existing invoice.

1. Tap on Sales at the left pane, then go to the Customers tab.
2. Choose the customer, then look for the past due invoice.
3. Add the interest item in the unused line, then enter the amount.
4. Hit Save and Close.

Aside from the interest charge, you can also check out this link about tracking bank charges when receiving customer payments in the future: Record bank charges when receiving payment from a customer.

For more tips about handling your customer entries in the future, you can also open this article: Topics about your company's income and customers.

Let me know if you have any other follow-up questions about interest charges. I'm always here to help. Have a good one!