Event Planning Permit Requirements in Seattle, WA

1. EIN (Employer Identification Number)

   Required if operating as a business entity (LLC or corporation) or if you have employees. Free from the IRS. You will need an EIN to open a business bank account and sign vendor contracts professionally.

   Official government source

   Free·Immediate (online application)

   Free

   Immediate (online application)

1. Washington Business Registration

   Event planning businesses operating in Washington must register with the Washington Secretary of State if operating as an LLC, corporation, or partnership. Sole proprietors using a trade name register that name through the Washington Department of Revenue's Business License Application, not with a county clerk. An LLC provides personal liability protection, which matters when coordinating large events.

   Official government source

   $180 original filing fee for an LLC or a profit corporation (same amount by mail or online), plus a $70 annual report each year thereafter. Expedited processing costs an extra $100 per entity.·Standard processing is not same-week; expedited filings are generally processed within three working days for an extra $100, and same-day service is available in person for $150.

   $180 original filing fee for an LLC or a profit corporation (same amount by mail or online), plus a $70 annual report each year thereafter. Expedited processing costs an extra $100 per entity.

   Standard processing is not same-week; expedited filings are generally processed within three working days for an extra $100, and same-day service is available in person for $150.

2. Washington Sales Tax Permit (if applicable)

   Event planning coordination services are taxed in Washington under the Service and Other Activities B&O classification and are not subject to retail sales tax. If you sell tangible goods — event supplies, decorations, floral arrangements, rentals — you must collect and remit state and local retail sales tax. Washington issues no standalone sales tax permit; collection authority is granted through the Department of Revenue Business License Application.

   Official government source

   No separate fee — sales tax collection authority is granted through the WA Business License Application: $50 to open a new business/UBI, or $10 to add an endorsement to an existing license.·About 10 business days if filed online; up to 6 weeks by mail

   No separate fee — sales tax collection authority is granted through the WA Business License Application: $50 to open a new business/UBI, or $10 to add an endorsement to an existing license.

   About 10 business days if filed online; up to 6 weeks by mail

1. Seattle General Business License

   Event planning businesses operating in Seattle must obtain a Business License Tax Certificate from Seattle License and Tax Administration, applying through FileLocal with the business entity information, primary business address, and description of services. Seattle does not issue a separate home occupation permit - home-based operators self-certify compliance with SDCI's home business rules (SMC 23.42.050). The certificate is required regardless of revenue. Seattle B&O tax is owed only above $2,000,000 in annual Seattle taxable gross revenue (threshold raised from $100,000 effective January 1, 2026, with a new $2,000,000 standard deduction), but you must still file and report gross revenue each year. Businesses with $4,000 or less of Seattle revenue and no place of business in the city are exempt from the certificate requirement as of 2026.

   Official government source

   2026 annual fee by Seattle taxable revenue: $73 (under $20,000), $147 ($20,000-$499,999), $667 ($500,000-$1,999,999), $1,604 ($2,000,000-$4,999,999), $3,210 ($5,000,000 or more), plus $10 per branch location. Businesses starting July 1 or later pay half the first-year fee.·Filed online through FileLocal the certificate is usually printable within 2-3 business days; by mail it takes one to six weeks. All certificates expire Dec. 31 and must be renewed annually.

   2026 annual fee by Seattle taxable revenue: $73 (under $20,000), $147 ($20,000-$499,999), $667 ($500,000-$1,999,999), $1,604 ($2,000,000-$4,999,999), $3,210 ($5,000,000 or more), plus $10 per branch location. Businesses starting July 1 or later pay half the first-year fee.

   Filed online through FileLocal the certificate is usually printable within 2-3 business days; by mail it takes one to six weeks. All certificates expire Dec. 31 and must be renewed annually.

2. Seattle Special Event Permit (for events in public spaces)

   When coordinating events that use Seattle public parks, streets, plazas, or other public venues, a Special Event Permit is required from the Seattle Special Events Office. As the event planner you may be obtaining it on your client's behalf. A completed application, with event map and street-use requests, is due 90 days before the event, with further submissions at 60, 45, 30, and 15 days out. All events must show general liability insurance of at least $1,000,000 per occurrence; events serving alcohol also need liquor liability of $2,000,000 per occurrence ($1,000,000 for nonprofits). A site plan or traffic management plan is often required.

   Official government source

   Fees depend on the event category assigned by the Special Events Committee. 2026 published rates include a $92 one-time permit application fee, a $250 minimum administrative fee, $25 per vendor, $92 per hour per police officer (two-hour minimum), $270 for the first alcohol area and $136 for each additional, and hourly street-closure rates from $11.47 (access street) to $430.11 (bridge). Use the city's fee estimator for your event.·Completed application due 90 days before the event, with additional submissions at 60, 45, 30, and 15 days out.

   Fees depend on the event category assigned by the Special Events Committee. 2026 published rates include a $92 one-time permit application fee, a $250 minimum administrative fee, $25 per vendor, $92 per hour per police officer (two-hour minimum), $270 for the first alcohol area and $136 for each additional, and hourly street-closure rates from $11.47 (access street) to $430.11 (bridge). Use the city's fee estimator for your event.

   Completed application due 90 days before the event, with additional submissions at 60, 45, 30, and 15 days out.

3. King County Special Event / Temporary Use Permit (unincorporated King County)

   Events on unincorporated King County land - or large outdoor events on private property in the county - need permits from King County Permitting. A Fire Marshal special event permit is required for tents or membrane structures over 400 sq. ft. individually (or 700 sq. ft. combined), for temporary structures over 120 sq. ft. or intended to gather 10 or more people, and for temporary structures used less than 180 days. A separate land-use Temporary Use Permit (Type 2) may also be required. Submittals include proof of insurance, a site plan, and sanitation provisions.

   Official government source

   2026 King County fees: special event or fireworks display review $483, plus $796 per inspection; a $126 application screening fee applies to most permit applications. A land-use Temporary Use Permit (Type 2) is $10,360 for general uses, with a $1,452 annual extension. Most permitting fees rose about 14% on January 1, 2026.·A complete special event permit application must be submitted at least 30 calendar days before the event start date; later submittals may leave event activities delayed, limited, or unpermitted.

   2026 King County fees: special event or fireworks display review $483, plus $796 per inspection; a $126 application screening fee applies to most permit applications. A land-use Temporary Use Permit (Type 2) is $10,360 for general uses, with a $1,452 annual extension. Most permitting fees rose about 14% on January 1, 2026.

   A complete special event permit application must be submitted at least 30 calendar days before the event start date; later submittals may leave event activities delayed, limited, or unpermitted.

Official Sources

• Seattle Business Licensing
• Washington Secretary of State — Business Registration
• IRS EIN Application

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