Buying a Washington business: the tax questions to settle before closing

You have a signed deal, a target closing date, and a Washington business changing hands. The buyer wants to know whether the seller's state tax problems could follow the assets. The seller wants to know what has to be paid before proceeds can be released. The broker wants a clean answer that can be shared with both sides.

The useful answer is not one document. Washington uses a successor-liability rule, a Tax Status Letter, a Successorship Notice, and separate sales-or-use-tax rules. Each answers a different closing question.

First ask whether the buyer is a successor

The starting point is what the buyer is actually acquiring. A buyer is generally a successor when it acquires, in bulk and outside the ordinary course, more than half of the fair market value of either the seller's tangible assets or its intangible assets. Tangible assets include items such as equipment and inventory. Intangible assets can include trade names, customer lists, franchise agreements, licenses, noncompetes, and goodwill.1WAC 458-20-216(2)–(3) defines successor status and the tangible and intangible asset groups. The current rule also lists limited acquisition exceptions.

This is why the asset list and purchase-price allocation matter before closing. The parties need a concrete description of what is transferring and a supportable value for each asset group. A label such as “asset sale” does not answer the successor question by itself.

Then separate the two DOR documents

A Tax Status Letter is an account snapshot. Washington DOR says it can show filed returns, unpaid balances, assessments, warrants, credits, pending payments, and other outstanding items. DOR also warns that the letter is not a verification of correct reporting and that the account can change after the letter date.2Washington DOR, “Request a tax status letter.” The current page describes the letter as a snapshot and lists what it includes.

The Successorship Notice does something else. It gives DOR written notice of the acquisition. If DOR receives proper notice and does not issue an assessment against the seller and send a copy to the successor within six months, the statute says the successor is not liable for the seller's tax. The rule says that six-month period starts on the later of DOR's receipt of the notice or the date the buyer becomes a successor.3RCW 82.32.140(4) states the notice-and-assessment rule. WAC 458-20-216(6) supplies the timing and notice details.

Exhibit · Three Washington tax questions

Plan the release, not just the forms

When the statutory disposition threshold is met, the seller's covered tax becomes immediately due and the seller must generally file and pay within ten days. A successor must withhold enough of the purchase price to cover the 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, the successor can become liable for the tax.4RCW 82.32.140(1)–(2) contains the immediate-due, ten-day, withholding, and successor-liability provisions.

That rule affects the distribution plan. If DOR shows an amount due, the closing instructions can direct payment from seller proceeds. If the parties expect an unresolved review after closing, they need written instructions for any holdback and a clear condition for later release. The escrow holder should not be left to decide the parties' tax risk.

Keep asset tax as its own workstream

Successor liability concerns the seller's tax account. Sales or use tax concerns property the buyer acquires. Washington DOR says machinery, equipment, office furniture, vehicles, and consumable supplies are subject to retail sales tax. If the seller does not collect that tax, the buyer must pay use tax directly to DOR on the taxable tangible personal property acquired in the purchase.

DOR lists real estate and intangible assets as not subject to retail sales tax. It also identifies exclusions for inventory bought for resale when the buyer gives the seller a reseller permit, and for qualifying manufacturing machinery and equipment when the buyer gives the seller the required exemption certificate.5Washington DOR, “Buying the assets of a business.” The current guidance separates taxable tangible property from listed nontaxable or exempt items.

Decision checklist before proceeds are released

1. Does the asset list and allocation show whether the buyer meets Washington's successor test?
2. Has the seller obtained a current Tax Status Letter, and does it show an item that must be handled at closing?
3. Who will sign and send the Successorship Notice, and how will receipt be documented?
4. Which acquired assets require sales tax, use tax, a reseller permit, or an exemption certificate?
5. Do the written closing instructions state every payoff, holdback, follow-up date, and release condition?

What each person needs from the file

The broker needs a short list of open items and owners. The seller needs to know what DOR evidence is required before proceeds can move. The buyer needs the successor analysis, the notice plan, and the asset-tax treatment documented. The escrow holder needs joint written instructions that say what to pay, what to hold, and what permits release.

For the broader document sequence, use the business-sale escrow checklist. If the transaction also involves Oregon, compare the separate Oregon tax-compliance guide; the Washington process should not be assumed to carry over.