What is Successor Liability?

What it is

Successor liability is the doctrine that can make a buyer responsible for a seller's pre-close obligations even after an asset purchase. Exposure can arise through assumed liabilities, de facto merger, mere continuation, fraudulent transfer, environmental law, tax obligations, product claims, benefit plans, or workforce-related claims.

Why it matters in your deal

For a self-funded ETA searcher, successor liability is where a clean asset deal can become a post-close balance-sheet shock. The APA may say the seller indemnifies the buyer, but an indemnity is only useful if the seller still has recoverable funds and the claim is within the cap, survival period, and security package.

Real example

A buyer acquires a $4M HVAC service business through an asset purchase. Eighteen months after close, a $600K tax assessment, $450K environmental order, $300K wage claim, and $150K in related fees appear. The seller has distributed sale proceeds, and the escrow is only $250K. The buyer now has a $1.5M problem that the APA structure did not actually secure.

Red flags to watch

• •Assumed-liability language covering "ordinary course" liabilities or liabilities "related to the acquired assets" without a schedule
• •No tax clearance, bulk-sale, environmental, benefit-plan, or claims diligence tied to closing conditions
• •Seller indemnity cap too small for tax, environmental, wage, product, or pension exposure
• •Survival period shorter than the expected discovery window for the main liability class
• •No escrow, holdback, seller note offset, or insurance backstop for seller indemnity obligations

What to do

1. 1Build a successor-liability checklist covering tax, environmental, workforce, product, pension, customer, and vendor exposure.
2. 2Use explicit non-assumption language and schedule every liability the buyer intentionally accepts.
3. 3Require tax clearance, lien searches, environmental review, benefit-plan diligence, and claims schedules before closing.
4. 4Size escrow, holdback, seller-note offset, survival periods, and special indemnities against the actual exposure class.
5. 5Coordinate M&A counsel with tax, environmental, benefits, and employment counsel where the target's facts require it.

Sources

1. ABA Model Asset Purchase Agreement with Commentary
2. 42 U.S.C. 9607 - CERCLA liability
3. IRS - Sale of a business