Glad to have you here in the Community, @lynn23.
Currently, QuickBooks only allows you to set terms for the discount date before the specific day of the month.
I can see how beneficial it is for you and your company to set terms for the discount date before the day of the following month. But I want to let you know that your voice matters and I'm submitting feedback directly to our product engineers for consideration.
For now, you can visit our blog site so you'll be able to get the latest news about QuickBooks and what our Product Care Team is working on.
You can also read through this article to know more about setting up terms in QuickBooks Desktop: Set up payment terms.
Please keep in touch if there's anything else I can do to help you succeed with QuickBooks. I've got your back. Have a great day.
