Washington tax status and successor liability in a business sale

A Washington buyer can inherit state tax exposure from the seller even in an asset purchase. Washington law uses a withholding rule, Department of Revenue tax-status documentation, and a separate Successorship Notice process.

1. Determine whether the buyer is a successor

Under RCW 82.32.140 and WAC 458-20-216, successor treatment generally applies when a person acquires, outside the ordinary course, more than 50 percent of the fair market value of either the seller's tangible assets or intangible assets. The rule includes assets such as equipment and inventory, but also trade names, customer lists, franchise agreements, licenses, noncompetes, and goodwill.

The test is factual. The closing file should identify what the buyer receives and the fair market value of the tangible and intangible asset groups. The result depends on the actual transaction.

2. The seller's tax becomes immediately due

When the statutory disposition threshold is met, RCW 82.32.140 makes the seller's covered tax immediately due. The seller generally must file and pay within ten days. That accelerated obligation should be discussed before the parties calculate seller proceeds.

3. The buyer must withhold unless the seller provides DOR documentation

A successor must withhold enough of the purchase price to cover the seller's tax until the seller produces a DOR receipt showing payment in full or a certificate that no tax is due. If the seller does not pay within ten days of the transfer, the successor can become liable for the tax.

The Washington DOR explains this process in Buying the Assets of a Business. The buyer may require a Tax Status Letter, which identifies outstanding taxes shown by DOR. If an amount is due, the closing can direct that amount from seller proceeds to DOR rather than distributing it to the seller.

4. A Successorship Notice starts a separate six-month period

The Successorship Notice serves a different purpose from a Tax Status Letter. Written notice tells DOR that the acquisition occurred and supplies predecessor, successor, asset, value, and purchase information.

Under RCW 82.32.140(4), a successor is not liable if it gives written notice and DOR does not issue an assessment against the seller and send a copy to the successor within six months after receiving the notice. WAC 458-20-216 explains that the six-month period begins on the later of DOR's receipt or the date the person becomes a successor. If an audit cannot be completed, DOR may seek a waiver extension or issue a protective assessment.

The notice starts a statutory process; it does not create immediate clearance. The file must remain open for follow-up unless DOR resolves the issue sooner.

5. Sales or use tax on the acquired assets is a different issue

Washington DOR states that machinery, equipment, furniture, vehicles, and consumable supplies are generally subject to retail sales tax. If the seller does not collect sales tax, the buyer may owe use tax.

Real estate and intangible assets are not subject to retail sales tax. Inventory acquired for resale can be excluded when the buyer supplies a valid reseller permit. A manufacturing machinery-and-equipment exemption may apply when its separate requirements are satisfied.

The purchase-price allocation should be supportable and consistent with the assets actually transferred. Successor liability concerns the seller's existing tax. Sales or use tax concerns the buyer's acquisition of taxable property.

6. Washington closing sequence

1. Classify the buyer's tangible and intangible asset acquisitions and test successor status.
2. Request the seller's Tax Status Letter early enough to address any balance.
3. Prepare and submit the Successorship Notice with complete transaction information.
4. Calculate sales or use tax from a supportable asset allocation and document any resale or manufacturing exemption.
5. Withhold seller proceeds until the required DOR evidence or agreed payoff instructions support release.
6. Track the six-month notice period and any assessment, waiver, or post-closing holdback.

Official sources

• RCW 82.32.140
• WAC 458-20-216
• Washington DOR, Buying the Assets of a Business
• Washington DOR Tax Status Letter