According to B3-6-05, which was updated on January 30, 2018, the answer is not necessarily.
"When a borrower has entered into an installment agreement with the IRS to repay delinquent federal income taxes, the lender may include the monthly payment amount as part of the borrower’s monthly debt obligations (in lieu of requiring payment in full) if:
- There is no indication that a Notice of Federal Tax Lien has been filed against the borrower in the county in which the subject property is located.
- The lender obtains the following documentation:
- an approved IRS installment agreement with the terms of repayment, including the monthly payment amount and total amount due; and
- evidence the borrower is current on the payments associated with the tax installment plan. Acceptable evidence includes the most recent payment reminder from the IRS, reflecting the last payment amount and date and the next payment amount owed and due date. At least one payment must have been made prior to closing.
As a reminder, lenders remain responsible under the life-of-loan representations and warranties for clear title and first-lien enforceability in accordance with A2-2.1-07, Life-of-Loan Representations and Warranties.
The payments on a federal income tax installment agreement can be excluded from the borrower’s DTI ratio if the agreement meets the terms in Debts Paid by Others or Installment Debt described above. If any of the above conditions are not met, the borrower must pay off the outstanding balance due under the installment agreement with the IRS in accordance with B3-6-07, Debts Paid Off At or Prior to Closing."
