Credit splits should work like any other transaction, subtracting the amount with the + already there.
Hello @mograce,
Thank you for coming to the Community to provide your feedback! Could you clarify what you're asking for?
Currently, in a split transaction, whether it's a + or - sign depends on which category you select. For example, in the sample image below, Paycheck is an income category, so it shows as +1000. Federal Tax is an expense category, and so it shows that number as a negative.
For more information on split transactions, click here.
I look forward to your reply!