How does a tax lien affect my business and business assets?

A federal tax lien for personal tax debt attaches to all your property and rights to property, including business assets if you're a sole proprietor or single-member LLC (since the IRS treats these as the same legal entity as you). For partnerships and multi-member LLCs, the lien attaches to your ownership interest in the business, not to the business's assets directly. For corporations and S-corps, the lien attaches to your stock but not directly to corporate assets (unless the business itself owes the taxes). Practical business impacts include: difficulty getting business loans or lines of credit, inability to secure bonded contracts (common in construction and government work), challenges with suppliers who check credit, potential loss of government contracts that require tax compliance certification, and damage to professional reputation if clients discover the lien. Business owners should prioritize lien resolution through installment agreements, lien subordination for specific business needs, or Offer in Compromise to minimize operational disruption.