IRS Form 4180 Interview – Trust Fund Recovery Penalty Interview ...The IRS uses a Form 4180 interview in order to determine liability for unpaid payroll tax debts. Basically, […] 16 Jun, 2021 in IRS Debt / Tax Guide tagged 4180 / business / interviews / IRS / payroll / penalties / trust funds by Robert Kayvon, Esq. (updated 1120 days ago)