What you need to legally operate as a Marketplace Seller in Washington.
Requirements, costs, how to apply, and how long it takes.
Starting a Marketplace Seller business in Washington requires a business license ($25-200), possible trade-specific certification, and general liability insurance ($500-2,000/year). Most solo marketplace sellers start as sole proprietors, then form an LLC as they grow. After licensing, you need business tools — invoicing, scheduling, CRM, bookkeeping. Most marketplace sellers pay $100-200/month renting these from multiple companies. Nexa is $279 once for all of it. Biz Wiz ($19.99) researches your exact Washington requirements — city, county, permits — and builds a personalized 90-day business plan.
Most marketplace sellers in Washington need a general business license from their city or county. Costs typically range from $25-$200. Check with your local city clerk's office or county government website.
Requirements vary by city and county within Washington. Some areas have additional permit requirements.
Depending on the type of Marketplace Seller work, Washington may require a trade-specific license, certification, or registration. Requirements vary significantly — some trades need state board certification, others just need registration.
Biz Wiz researches your exact requirements in Washington and provides direct links to apply.
General liability insurance is recommended (and sometimes required) for marketplace sellers in Washington. Typical cost: $500-2,000/year depending on coverage level and your specific services.
Most solo marketplace sellers start as sole proprietors, then form an LLC as they grow. An LLC in Washington typically costs $50-500 to form depending on the state filing fee.
Key numbers for marketplace sellers in the Seattle-Tacoma-Bellevue, WA area:
Nexa is 0.27% of median Seattle household income — paid once, not every month. In a high cost-of-living area, every subscription dollar hits harder.
No state income tax but Washington B&O tax applies to gross receipts — even unprofitable solopreneurs owe tax on revenue.
Biz Wiz factors in Washington-specific tax obligations when building your financial plan.
Washington requires a UBI number and business license. Seattle requires a separate city business license. Specialty trades need L&I certification.
That daily chaos is what happens when your tools don't connect. After licensing, set yourself up with one integrated system from day one — Nexa is $279 once, or $99 today and two more payments.
Once you have your license, the real work begins. Here are the operational problems that marketplace sellers deal with daily:
Biz Wiz ($19.99) builds your plan around these exact challenges — not generic advice, but a strategy specific to marketplace sellers in Washington.
Biz Wiz is an AI business coach that researches YOUR specific situation.
Your trade. Your city. Your state. Current requirements with links to apply.
Includes full business plan: licensing, pricing, marketing, tools, and 90-day action plan.
Get Your Washington Business PlanOnce you are licensed, you need tools to run the business: invoicing, scheduling, client management, bookkeeping. Most marketplace sellers pay $100-200/month renting these from multiple SaaS companies — that is $1,200-2,400/year in subscriptions. Over 3 years at today's prices, a $150/month software stack costs $5,400. You never own any of it.
New marketplace sellers in Washington face a choice: start renting software from day one and build that cost into your overhead forever, or pay $279 once for Nexa and own your tools from the start. Nexa includes invoicing, scheduling, CRM, time tracking, task management, and full accounting — everything a Marketplace Seller needs. No monthly fees. No price increases. No losing access if you cancel.
Nexa: $279 once. Professional from day one. Own it forever.
$19.99 for a personalized plan. Licensing, pricing, marketing, tools — everything you need for Washington.
Get Your Plan — $19.99