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How To File And Pay


Before a business can report and pay B&O tax, the business must maintain a valid and active City of Auburn business license.  For information on obtaining a City of Auburn business, please see to City of Auburn webpage  or email at [email protected].

There are two options for filing your tax returns and pay:

Online Filing

You may now file your B&O, Utility, Gambling, and Other tax returns electronically, using FileLocal.

  • Businesses will be required to link a valid and active City of Auburn business license prior to being able to report and pay B&O Tax.  The manual validation by the City Tax Division may take up to 48 business hours. After the business license is approved, you may start filling the City tax return.
  • After you have completed your online return, you will be required to pay your taxes online. You have the option of paying with either:
  • ACH – you can enter your bank account number and routing information to make a one-time payment.  This type of payment will be charged a fee of $1 per transaction.
  • Credit Card – you can enter your credit card information for a one-time payment. Payments made with credit cards will be charged a fee of 2.5% of the transaction amount, which will be charged to the credit card.
  • Please note, in addition to the fees listed above there will also be added a $4 fee for each city you are completing a filing for on FileLocal. For questions related to the fees please visit the FAQ section of FileLocal.

Mail Paper Return

The multi-purpose tax return and other tax forms are available in .pdf format at Returns must be completed and remitted with payment of any taxes due by the due date. Penalties and interest are due if tax returns are not filed, and taxes paid by the due date.

Mail completed tax returns with payment to:
City of Auburn - Finance Department
25 W Main Street
Auburn, WA 98001

With any further questions, you may contact our Tax Division by email at [email protected].


Quarter Ending
Payment Due
March 31
April 30
June 30
July 31
September 30
October 31
December 31 
 January 31
Annual Ending
Payment Due
December 31
April 30 of the following year
Penalties and Interest are charged as follows:
1 day - 1 month overdue:  9% ($5 minimum)
Over 1 month - 2 months:  19% ($5 minimum)
Over 2 months:  29% ($5 minimum)
Annual interest rate for 2022 2%
Annual interest rate for 2023 3%
Annual interest rate for 2024 6%

Helpful hints when submitting your tax return

  • Use the returns provided. Substitutions can cause errors.
  • Make check or money order payable to City of Auburn. Do not send cash.
  • Mark the Tax form if changes in address or status of ownership occurred and write new information either on the form or enclose a letter with your tax return.