Sent an invoice to a customer and they have paid some of the invoice but not all due to taking off our tax how do I record this in QB as it says payment is overdue now ?

Hello dmbirdplumbing,

Welcome to the Community - thank you for your question!

You can either edit the original invoice so that the amount due is the amount you received, or you could raise a credit note for the amount left and apply this to the payment to close it down.

You can do this by going to the + icon, selecting credit note and selecting the customer. Once you have created the credit note, open the payment and tick the credit note at the bottom.

Thanks,

Talia