Hello there, randburg. 

QuickBooks automatically sets the option to default once you select and save the transaction. You can change the option from Save and New to Save and close. You can also use Ctrl Alt S to save and Ctrl Alt to Save & Close.

I know how convenient it is for your business to keep the Save and Next option when receiving payment . This feature can save time since you won’t have to toggle the menu. I suggest sending feedback about this feature directly to our engineers for inclusion in future updates. Ideas like this will help us improve the level of service we provide to our customers.

Here’s how to submit:

1. Press the Gear icon in the upper right and choose Feedback under Profile.
2. This will open a window where you can enter your product suggestions.
3. From there, input how you want to the program works.
4. Click Next to submit it.

Here's an article you might find helpful when receiving payments: Record invoice payments in QuickBooks Online 

I'm just a few clicks away if you have any other questions. I'd be pleased to help. Take care!