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There are different ways to enter a vendor credit. Basically, it boils down to what type of credit. For example, is this a refund credit, a promotion credit, a credit card credit, etc? Below I'm covering the steps to enter a refund credit.
Here's how:
Click on the + New button.
Choose Vendor credit.
In the Vendor dropdown, select your vendor.
Enter the Category or Item details depending on how you record purchases with this vendor. Usually, this is the category, product, or service you’re getting a credit for. Note: If you choose an inventory item, QuickBooks will put it back into inventory. If the item is defective or if you don’t want it added back to inventory, you can make an inventory adjustment.
Hit Save and close.
If you'd like to apply the credit to a future bill, here's how:
Select + New.
Choose Pay bills.
Pick a bill for your vendor from the list. You'll see the available credit with this vendor in the Credit Applied field.
Complete the rest of the fields like you normally do.