Washington has no personal or corporate income tax, and plenty of formation guides stop the sentence right there. What they leave out is the Business & Occupation (B&O) tax: a gross receipts tax that hits total revenue whether or not the business ever turns a profit.
For a pre-revenue or low-margin founder, that can bite harder than an income tax would.
Forming the LLC itself follows the same basic checklist as any state. What actually needs a Washington-specific read is the registered agent, the higher-than-average filing fee, and the ongoing tax picture once the LLC exists.
TL;DR
- No income tax isn't the whole story: Washington charges no state personal or corporate income tax, but the B&O gross receipts tax applies to virtually all LLCs doing business here, profit or no profit.
- Step 1, name: confirm your LLC name is available with the Washington Secretary of State and includes a required designator like "LLC."
- Step 2, registered agent: you need a physical Washington street address, no PO box, to receive legal notices.
- Step 3, Certificate of Formation: Washington's filing fee runs $180 to $200, noticeably higher than the $50 to $125 many states charge.
- Step 4, EIN without an SSN: the IRS online EIN tool requires an SSN or ITIN, so non-US founders apply by phone, fax, or mail instead.
- Step 5, Form 5472: a 25%+ foreign-owned single-member LLC must file this every year, even at zero revenue, or risk a $25,000 minimum penalty.
- Step 6, ongoing compliance: a $70 Annual Report is due every year, and the B&O tax is a separate, recurring obligation most new founders don't see coming.
- Common mistakes: assuming "no income tax" means no state tax exposure at all is the one that costs Washington founders the most.
Why Form Your LLC in Washington?
Washington pairs no state income tax with a genuine tech-hub presence: Seattle, Amazon, Microsoft, and Boeing all sit in-state, which matters if you plan actual Washington operations, hiring, or investor proximity. That's a real draw a "paper only" state like Wyoming or Delaware can't offer.
The trade-off is worth stating up front. Washington's formation fee runs notably higher than most states, and the B&O tax taxes gross revenue rather than profit.
A founder coming from an income-tax state, where a loss year means no tax bill, can get caught off guard when Washington still expects a B&O payment on total receipts.
- Good fit: founders with real Washington operations, employees, customers, or investors who want to be near the Seattle tech corridor.
- Weaker fit: founders looking purely for a "no tax" paper entity with no actual Washington presence, since the B&O tax follows business activity in the state.
Step 1: Choose and Reserve Your LLC Name
Your LLC's name has to be distinguishable from other registered entities in Washington, and it must include a designator such as "LLC" or "Limited Liability Company."
- Search first. The Washington Secretary of State's business search lets you check name availability before filing anything.
- Avoid restricted words. Terms implying banking, insurance, or other regulated activity typically need separate approval.
- Reserve it if you're not ready to file. A name reservation costs $30 (or $130 total if expedited) and holds the name for 180 days.
- No publication requirement. Unlike a handful of other states, Washington doesn't require you to publish notice of formation in a newspaper.
This step works the same whether you're forming from inside the US or from abroad, and it costs nothing if you're not reserving the name separately.
Step 2: Appoint a Registered Agent
Every Washington LLC needs a registered agent with a physical street address in the state, available during business hours to receive legal documents and state notices. A PO box doesn't qualify.
- Three options exist: a Commercial Registered Agent, a Noncommercial Registered Agent, or one of the LLC's own members or managers, as long as they have a real Washington street address.
- Founders without a Washington address typically use a commercial registered agent service instead of trying to list a friend's home.
- Most commercial services also scan and forward mail, which matters if you're not checking a Washington mailbox yourself.
Skipping a real registered agent in favor of an informal arrangement can put the LLC out of compliance, which can affect its standing with the state.
Step 3: File Your Certificate of Formation
Washington calls its formation document a Certificate of Formation, filed with the Washington Secretary of State, Corporations & Charities Division. This is the filing that legally creates the LLC.
- Filing fee: $180 as the statutory fee for a mail filing, or roughly $200 total for an online filing once the online processing surcharge is added. That's notably higher than the $50 to $125 many states charge.
- Processing time: varies by method; online filings typically process faster than mail. Expedited processing adds $100 per entity and generally completes within about 3 business days.
- What it lists: the LLC's name, registered agent, and principal address, similar to most states' formation documents.
Once the Certificate of Formation is approved, the LLC legally exists, and the clock starts on the tax and compliance obligations covered later in this guide.
Step 4: Get an EIN, Even Without an SSN
Most founders apply for an EIN online and get it in minutes. Founders without a Social Security Number or Individual Taxpayer Identification Number (ITIN) can't use that option and need a different path.
An Employer Identification Number (EIN) is what the IRS uses to identify your LLC for tax purposes, and you'll need one to open a US bank account or file taxes. It's free directly from the IRS either way.
| Method | Who can use it | Typical speed |
|---|---|---|
| Online EIN application | SSN or ITIN holders | Minutes |
| Form SS-4 (phone, fax, or mail) | Founders without an SSN or ITIN | Same-day to several weeks |
The wait on the manual route mostly depends on volume and how completely the form was filled out the first time. Getting the responsible-party details right on the first try matters more here, since a rejected submission means starting the wait over.
Step 5: File Form 5472 if the LLC Is Foreign-Owned
If your single-member LLC is 25% or more foreign-owned, the IRS requires an annual Form 5472 filing, even at zero revenue. This is a federal requirement, not a Washington-specific one, but it applies regardless of which state the LLC forms in.
- Filed with a pro forma Form 1120, a placeholder corporate return required alongside the 5472, even though the LLC itself owes no separate corporate income tax.
- Reports transactions between the LLC and its foreign owner, things like capital contributions or payments for services.
- Due on the same schedule as your federal income tax return, and extensions can typically be requested the same way.
- Applies even when dormant. Founders who assume a low-activity LLC has "nothing to report" are exactly who this catches.
Note: the IRS's stated minimum penalty for a late or missing Form 5472 is $25,000, per form, per year, whether or not the LLC made a dollar.
Step 6: Handle Washington's Ongoing Compliance
This is the step that most affects a Washington LLC's actual cost of staying compliant, and it has two separate pieces founders tend to conflate: the Annual Report and the B&O tax.
The Annual Report
- Fee: $70, increased from $60 effective June 11, 2026 under recent state legislation. Some older sources may still show the $60 figure, so confirm the current amount before filing.
- Due date: the last day of the LLC's anniversary (formation) month, every year. You can file up to 180 days early.
- Late penalty: a $25 delinquency fee applies if you miss the deadline.
- Administrative dissolution risk: if the report stays unfiled more than 120 days past due, the Secretary of State can begin administrative dissolution, though a 60-day cure notice comes first.
- Reinstatement: possible within 5 years of dissolution, but it requires paying back-fees plus a $140 penalty.
The Business & Occupation (B&O) Tax
Washington's constitution restricts the state from imposing a personal or corporate income tax, and Washington genuinely has neither. That doesn't mean zero state tax exposure, because the B&O tax fills a different role entirely.
- It taxes gross revenue, not profit. There's no deduction for expenses, so an LLC can owe B&O tax in a year it lost money.
- It applies to virtually all LLCs doing business in Washington, regardless of size or entity type.
- Rates vary by business classification, not by profitability.
- It's administered by the Washington Department of Revenue, filed through excise tax returns on the state's MyDOR system.
- A small-business B&O credit exists that can exempt very low-revenue businesses entirely, but the current revenue threshold is unverified and conflicting across sources. Confirm current eligibility directly with the Washington Department of Revenue rather than relying on a specific number here.
| Classification | Approximate B&O rate |
|---|---|
| Retail | ~0.471% |
| Wholesale / manufacturing | ~0.484% |
| Services / financial | ~1.5% |
An LLC operated by a foreign owner with no US employees can still owe B&O tax on Washington-sourced gross receipts, separate from anything federal Form 5472 already covers. Consult a tax professional to confirm how your specific activity gets classified.
The Operating Agreement Still Matters
Washington doesn't require you to file an operating agreement with the state, but skipping it weakens the liability protection an LLC is supposed to provide. It's the internal document that spells out ownership splits, decision-making, and what happens if a member wants out.
Common Mistakes to Avoid
- Assuming "no income tax" means no state tax exposure at all: the B&O tax still applies to gross revenue, and a pre-revenue or low-margin founder can be surprised by a B&O bill in a year the business lost money.
- Treating the EIN as the finish line: for a foreign-owned LLC, the EIN is closer to the starting gun on an annual filing obligation than the end of the process.
- Skipping Form 5472 because there's no revenue yet: the filing requirement doesn't care whether the LLC has made money.
- Using an informal address as the registered agent: it can put the LLC out of good standing and exposes a personal address on public record.
- Missing the Annual Report deadline: the $25 delinquency fee is minor, but 120 days past due opens the door to administrative dissolution.
How FinStackk Helps With Starting Your LLC in Washington
FinStackk is an accounting and tax compliance platform for U.S. businesses, helping you go from incorporation to ongoing accounting, tax, and compliance, all in one place.
We handle the incorporation steps above, including EIN applications and registered agent service, through Fin-Start. It's built to handle Overseas Direct Investment (ODI) compliance for founders incorporating from outside the US.
Once your LLC exists, Fin-Tax keeps ongoing filings, including Form 5472 and Washington's B&O tax obligations, on a proactive deadline calendar instead of leaving you to track it yourself. Book a free demo to see both in action.
FAQ
Does Washington really have no income tax for LLCs?
Yes, Washington has no state personal or corporate income tax, a restriction rooted in the state constitution. That doesn't mean an LLC owes nothing to the state, though.
The Business & Occupation (B&O) tax applies to gross revenue for virtually all businesses operating in Washington, and it's owed even in a year the LLC operates at a loss.
How much does the B&O tax actually cost a small LLC?
It depends on your business classification and total gross revenue, since the B&O tax has no deduction for expenses. Rates run roughly 0.471% for retail, 0.484% for wholesale and manufacturing, and around 1.5% for services and financial activities.
A small-business credit can exempt very low-revenue businesses, but confirm current eligibility with the Washington Department of Revenue rather than assuming a threshold.
What happens if I miss Washington's Annual Report deadline?
A missed Annual Report triggers a $25 delinquency fee, due the last day of your LLC's anniversary month. If it stays unfiled more than 120 days past due, the Secretary of State can begin administrative dissolution, though you'd get a 60-day cure notice first.
Reinstatement within 5 years is possible but requires back-fees plus a $140 penalty.