Carl
Level 15

Investors & landlords

How do I enter 40% of the primary house interest to rental house A in TurboTax?

I'm not quite sure why you're asking this. When working through the rental expenses section, once you've entered your expenses, you'll be presented the mortgage interest screen. After you figure what 40% is, you enter it one keystroke at a time. 🙂  Apparently, I"m missing something in your question that I'm supposed to assume maybe?