Where can I enter the Maine Property Tax fairness credit? I have taken this in the past using a different tax program?

TurboTax will automatically apply the credit based on income entries; it will also ask you about specific adjustments to income.  

Homeowners or renters who meet all of the following requirements:

• Were Maine residents during any part of the tax year;
• Owned or rented a home in Maine during any part of the tax year and lived in that home during the year as a primary residence;
• Paid property tax* or rent on the primary residence in Maine during the tax year;
• Meet certain income and property tax and/or rent paid limitations during the tax year; and
• Are not married filing separately.