IRS Form 668-R is used by the IRS to seize assets held in a retirement account to pay a delinquent tax liability. It is important to recognize that this is a seizure of an asset, not income. The IRS has a different form that they use to levy retirement income streams. The types of retirement account assets that are subject to levy are extensive. They include: Qualified Pension, Profit Sharing, and Stock Bonus Plans under ERISA IRAs Retirement Plans for the Self-Employed (such