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Washington Tax Clearance: What Sellers File With DOR

By the Seattle Business Brokers Desk · Updated October 16, 2026

Washington makes a buyer responsible for a seller's unpaid state taxes unless the buyer protects themselves. So every careful buyer will, using part of your price.

This guide from Seattle Business Brokers Desk explains what you file, what the buyer holds back and how to get it released.

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Business owner and bookkeeper reviewing Washington excise tax returns on a laptop beside a folder of receipts at a small office desk

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The short answer

  • You file a final excise tax return, with payment, within 10 days of the sale
  • The buyer must hold back enough of the price to cover your unpaid state taxes until you show a DOR receipt or a certificate that nothing is due
  • If the tax isn't paid within 10 days of the sale, the buyer becomes liable for it
  • DOR issues a clearance certificate within about ten business days of a complete, accurate application
  • Clean up missing periods before you list, so the holdback is small and short
In this guide
  1. The Rule in Plain Terms
  2. Your Own Deadline: 10 Days
  3. The Three DOR Documents
  4. Why the Buyer Still Holds Back Money
  5. How Big, and Where It Sits
  6. What Slows a Clearance Down
  7. Before You List: A Short Checklist
  8. The Rest of the Closing Paperwork

The Rule in Plain Terms

Washington's Department of Revenue collects the business and occupation tax, retail sales tax and other state excise taxes. When you sell your business, any of those taxes you still owe don't disappear. They follow the business.

The law puts a duty on the buyer. A buyer, called a successor, must withhold enough of the purchase price to cover any tax you owe until you produce a receipt from the Department showing the taxes are paid, or a certificate showing none are due.

If your taxes are not paid within 10 days of the sale, the buyer becomes liable for the full amount.

Your Own Deadline: 10 Days

As the seller, you must file a final tax return, with payment, within 10 days of the sale. That is short, and it lands during the busiest stretch of the deal.

Put the date on your closing calendar the moment you sign a purchase agreement. Your bookkeeper should have the final period's sales figures ready before closing day, not after.

The Three DOR Documents

The Department of Revenue's "Sell my business" page lists three forms that come up in a sale.

  • Revenue Clearance Certificate application. You apply, and when the application is complete and accurate the Department says it issues the certificate within about ten business days.
  • Request for Tax Status. DOR suggests buyers ask for a tax status letter, which shows where your account stands.
  • Successorship Notice. A buyer uses it to tell the Department about the purchase in writing.

Expect the buyer's attorney or escrow officer to ask for the certificate or status letter as a closing item.

Why the Buyer Still Holds Back Money

Some sellers are surprised that a clean status letter doesn't end the holdback. The reason is timing.

A tax for a period before the sale can be assessed after the sale, for example after an audit. Washington appeals decisions have held buyers liable in that situation even when the buyer relied on a Department receipt showing a zero balance.

A buyer who gives the Department written notice of the purchase is protected if no assessment is issued within six months of that notice. That's why many holdbacks last about that long.

The holdback is not a judgment of your honesty. It is the buyer's attorney doing the job.

How Big, and Where It Sits

The law asks for enough to cover the tax that may be owed. In practice, the buyer's attorney sets a figure based on your recent returns, your audit history and how current the account is.

The money usually sits with the escrow company handling the closing. It's released to you when the conditions in the purchase agreement are met, or used to pay the Department if something turns up.

What Slows a Clearance Down

  • A filing period you missed, often after a change of bookkeeper or software
  • An old balance, penalty or notice you thought was settled
  • Gross receipts on your federal return that don't match your excise returns
  • Sales tax not collected on sales where it was due
  • A final return filed after the 10 day deadline

Mismatched gross receipts are the most common. Buyers' accountants compare your federal returns to your state returns as part of diligence, so fix any gap first. It also affects what the company is worth to them.

Before You List: A Short Checklist

  1. Log in to My DOR and review every return period for the past several years.
  2. File anything missing and pay open balances, including penalties and interest.
  3. Reconcile reported gross receipts to your federal tax returns and books.
  4. Gather resale and exemption certificates for sales you treated as nontaxable.
  5. Note every location and account the company holds with the Department.

Then plan the final return and the clearance application into your closing timeline.

The Rest of the Closing Paperwork

The Department of Revenue account is one of several.

Sales tax on the equipment you sell, your L&I and ESD employer accounts, and the Seattle business license account all need attention. See sales tax on equipment and the full Washington filings list.

If you're thinking about selling, start with a confidential estimate on the price check form or call (206) 555-0171.

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