How Investment Partner Affects Debt-to-Income Ratio

[Kenan Heppe]

Hello BP world!

I'm wondering if anyone knows how a mortgage entered into with an investment partner would affect each person's future DTI calculations from the perspective of a lender. If you're both equally responsible for the loan, does only half the PITI count toward your personal DTI, and the other half to your partner? Or does the DTI debt amount increase the entire amount for both investment partners?

Thanks,

Kenan