PMI premiums are part of your itemized deductions on Schedule A. In the program, you enter them in Federal Taxes, Deductions and credits, My Home.
Instructions for amending follow. Amended returns have to be filed on paper in the mail and it takes the IRS 12-16 weeks to process them. You should wait until you receive your original refund or your tax payment is processed before changing your return and mailing in the amendment.
https://ttlc.intuit.com/replies/3288565
