Due Diligence

Tax Due Diligence

Learn to verify a business's tax compliance — income, payroll, sales tax, worker classification — because unpaid taxes accrue penalties, hide in plain sight, and can transfer to a new owner.

  • Intermediate
  • 11 min total
  • 12 chapters

What decision this helps you make: Whether a business's tax house is in order — or hiding liabilities that grow with interest and penalties and can become yours.

What this topic is

Tax due diligence verifies that a business has actually paid and filed what it owes — across income, payroll, sales/use tax (and nexus), and worker classification — because unpaid or underpaid taxes are a classic hidden liability.

Why it matters

Tax problems accrue interest and penalties over time and can attach to the business — and, in some structures, to a buyer — long after the fact. An undiscovered tax problem can be far larger by the time it surfaces than the original tax owed.

Who should learn it

Anyone buying a business, especially one that sells across states or uses contractors.

What you will understand

  • Understand tax diligence: verifying real tax compliance
  • Know the areas: income, payroll, sales/use tax, worker classification
  • See why unpaid taxes are a hidden, compounding liability
  • Learn how structure and indemnities allocate tax risk

Prerequisites

Common misconception

"The business is profitable and has an accountant, so its taxes must be fine." Profitability and an accountant don't guarantee compliance. Unpaid payroll taxes, uncollected sales tax in states where the business has nexus, misclassified workers, and unfiled returns are common — invisible on a casual read, and they accrue interest and penalties until they surface. Verify the tax house; it can hide a compounding liability that even transfers to a new owner.