I have seen several times that lenders calculate DTI incorrectly.
For example, if total expense of your rental properties is $9,000/mo and total gross rent is $10,000/mo (thus net rental income is $1,000/mo); You have a employment job that pays you $8,000/mo salary and you primary home's PTITA is $900, no other debts
The correct way to calculate DTI is 900 / (8000 + 1000) = 10%
I have seen several lenders calculate like this (900 + 9000) / (8000 + 10000) = 55%
https://selling-guide.fanniema...
If the rental income (or loss) relates to a property other than the borrower's principal residence:
- If the monthly qualifying rental income (as defined above) minus the full PITIA is positive, it must be added to the borrower’s total monthly income.
- If the monthly qualifying rental income minus PITIA is negative, the monthly net rental loss must be added to the borrower’s total monthly obligations.
- The full PITIA for the rental property is factored into the amount of the net rental income (or loss); therefore, it should not be counted as a monthly obligation.
- The full monthly payment for the borrower's principal residence (full PITIA or monthly rent) must be counted as a monthly obligation.
So, only the net rental profit or loss should count towards your DTI, not the entire PITIA and repair cost.
If you have a net rent loss of 1000/mo instead of net rent profit, then DTI is (900+1000) / 8000 = 23.75%
In summary
If it's positive rental income, DTI = Primary home PITIA / (Salary + Net rental income);
If it's rental loss, then DTI = (Primary home PITIA + Rental loss) / Salary.