Currently, this isn’t an option in Acumatica.  This would be a great idea to submit to the ideas board.

There are some examples of the possible credit term types in Acumatica in the help guides here: https://help.acumatica.com/(W(8))/Help?ScreenId=ShowWiki&pageid=cf92a58d-14c5-4a98-b22a-e3ecfb60969b

Hello @meganfriesen37,

Thank you for the feedback. As a workaround, I would suggest setting due dates as Working days + Weekends (Assuming no other Holidays). 

If my due date is 10 working days, I will set the due date in Acumatica as 14 days. 

Thank You.

@meganfriesen37  I added this as an Idea. 

https://community.acumatica.com/ideas/payment-credit-terms-based-on-business-days-23726