Where do you add the Deason Rule reduction? All of the Schedule C locations reject a negative number.

Yes, the Deason Rule involves manual adjustments for your clergy expenses. But you need to make the calculations manually. TurboTax won't handle this for you.

Why are you entering negative numbers? Enter your adjusted expenses per the Deason rule rather than entering a negative number.

You might wish to review this Community post: Business Expenses for Clergy.