Go to Business -> Business Income & Expenses -> Business Taxes -> Self-Employment tax, click Make Adjustments, then enter your net income as a Notary Public (from Schedule C, line 31, assuming on other SE income on that Schedule C).
One thing that bothers me is that TurboTax puts on Part III, line 2a of the Keogh/SEP Wks the amount of SE taxes that would be deductible if you were subject to SE tax. I don't understand why it does not have $0 there and on line 2c. I only get the result I described above if I override line 2c with $0.
