I noticed that when I receive an over-payment in rent I am forced to resolve the difference. I there a way carryover the amount and reconcile it with the next invoice?

When you receive an overpayment, it is essential to handle it correctly in QuickBooks Online and apply it to your future invoices, BRIAN. Here’s how to handle overpayments and ensure they are tied up with the next invoice.

If an overpayment comes from the downloaded transaction from the bank, we need to match it to the invoice to resolve the difference. 

However, since you need to apply it to the next invoice, we can exclude the downloaded transaction in the Banking Transaction section.

Here's how to exclude transactions:

1. Locate the Blue Tile where you downloaded your bank transactions.

2. Under the For Review tab, find the overpayment transactions on the page. Then, put a checkmark in the Checkbox.

3. Once done marking it check, and click the Exclude button.

After that, record the invoice payment manually using the Receive Payment feature and enter the overpayment amount. See sample illustration below:

Afterward, the remaining unapplied amount will appear as a credit on your customer's balance. See the screenshot below:

There are other ways to handle a client's credit in QBO, please refer to this page to learn more about it: Create and apply credit notes or delayed credits in QuickBooks Online.

In case you need to refund your customer, use this page to process the refund through various methods: Record a customer refund in QuickBooks Online.

For further assistance regarding customer overpayments, please provide details in the Comment section. Additional support can be provided as needed.