Can a non-mortgage debt which is paid by another party be omitted from ratios?

Can a non-mortgage debt which is paid by another party be omitted from ratios?

Yes, Arch MI allows a non-mortgage debt to be excluded from DTI calculations, provided that a) the party paying the debt is not an interested party to the transaction (such as the seller or realtor), and b) the most recent 12 months’ cancelled checks (or bank statements) from the party making the payments are obtained, to document a 12-month payment history with no delinquencies.