From June 1, 2015 through June 30, 2015, qualifying registered and unregistered businesses in Tacoma, Washington may take part in a one-time program that waives penalties and interest on local City of Tacoma business tax and license fees due April 30, 2015 or earlier. The amnesty program applies to the following taxes: Business and Occupation (B&O) Taxes; Private Utility Taxes; Admissions Taxes; Gambling Taxes; Annual Business License Fees; Regulatory License Fees; and Unreported Liabilities. The program also waives 50% of civil penalties. For unregistered businesses, the “look-back” period is limited to four years in addition to the current year. Payment of all taxes and 50% of the civil penalty, including those due on or before July 31, 2015 must be paid by July 31, 2015. Participants in the amnesty program waive their right to seek a refund or challenge the amount paid under the program.