How to Start an LLC in Washington: A Step-by-Step Guide (2027)

How to Start an LLC in Washington (Quick Answer)

To start an LLC in Washington, file a Certificate of Formation with the Washington Secretary of State through the Corporations and Charities Filing System, and pay the $180 mail fee or roughly $200 online. Once the state approves it, your LLC legally exists, and from then on it files a $70 Annual Report by the last day of its anniversary month each year.

First-year cost: $180 if you file the Certificate of Formation yourself by mail, or roughly $200 online. If you are not based in Washington, add a registered-agent service, commonly $35 to $300 a year, plus an optional $30 name reservation.

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, Initial Report: Washington requires a separate Initial Report within 120 days of formation, distinct from the recurring Annual Report.
• Step 5, 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 6, business bank account: a US bank account keeps LLC finances separate from personal funds, which matters for both bookkeeping and liability protection.
• Step 7, 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 8, 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.
• Not ready to file yet? Lock the name down first. $30 buys a 180-day hold on the name ($130 total if you want it expedited), which is useful if the rest of your paperwork isn't finished.
• 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: File Your Initial Report

Washington requires every new LLC to file an Initial Report, a separate, one-time filing from the recurring Annual Report covered later in this guide.

• Deadline: due within 120 days of the Certificate of Formation being approved.
• Cost: free if filed at the same time as the Certificate of Formation; filing it separately later can carry its own fee.
• What it confirms: the LLC's registered agent, principal address, and governing persons, essentially a check-in shortly after formation to make sure the state's records are current.
• Where it's filed: through the same Washington Corporations and Charities Filing System used for the Certificate of Formation.

Missing this filing doesn't undo the LLC's formation, but it's a compliance gap worth closing early rather than letting it slip alongside everything else a new founder is juggling.

Step 5: 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.

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 6: Open a US Business Bank Account

With a Certificate of Formation and an EIN in hand, most founders open a dedicated US business bank account next. Keeping LLC funds separate from personal funds isn't just tidy bookkeeping, it's part of what preserves the liability protection an LLC is meant to provide.

• What's typically needed: the approved Certificate of Formation, the EIN confirmation letter, and a copy of the operating agreement, requirements vary by bank.
• Non-US founders: some banks require an in-person visit to open an account, while a growing number of fintech and online-first banking platforms support remote account opening for foreign-owned LLCs.
• Why it matters beyond convenience: mixing personal and business funds, often called "commingling," is one of the more common reasons courts pierce the liability shield an LLC is supposed to provide.

Step 7: File Form 5472 if the LLC Is Foreign-Owned

Own 25% or more of your single-member LLC from outside the US? The IRS wants Form 5472 from you every single year, whether the LLC made a dollar or sat completely idle. This obligation comes from federal law, not from anything Washington itself requires, so it travels with the LLC no matter where it's formed.

• It doesn't stand alone. You'll attach a pro forma Form 1120 alongside it, a placeholder corporate return the IRS wants even though the LLC has no separate corporate income tax bill of its own.
• It's a record of money moving between you and the LLC, covering things like capital you put in or fees paid for services.
• The deadline tracks your federal return, and extensions follow the same process as extending that return.
• Inactivity is not an exemption. A quiet, low-activity LLC still owes this filing, which trips up plenty of founders who assume nothing happened means nothing to report.

Note: miss this one and the IRS's stated floor is a $25,000 penalty, charged per form, per year, regardless of whether the LLC generated any income at all.

Step 8: 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.

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.

Draft an Operating Agreement

Nothing in the Washington filing steps asks you to send an operating agreement to the state, which is exactly why founders skip it. It is the internal document that settles how the LLC actually runs, so write it while every member still agrees on the answers.

• Fix ownership and money up front. Record each member's ownership percentage, how profits and losses are split, and when distributions get made, so nobody is negotiating that after the first profitable quarter.
• Name who can decide what. State whether the members manage the LLC themselves or appoint a manager, which decisions need a vote, and what counts as approval.
• Write the exit terms before you need them. Cover what happens if a member wants out, sells a stake, dies, or the LLC winds down, since default rules handle those moments least cleanly.

It stays with your internal records rather than going to the Secretary of State, and drafting it costs nothing. A single-member LLC benefits too, because the agreement is evidence that the business is genuinely separate from its owner if that separation is ever challenged.

Washington LLC Costs Breakdown

Washington's formation fee runs higher than the $50 to $125 many states charge, and the B&O tax is a recurring cost most founders do not budget for. Every figure below comes from the steps above.

How Long Does It Take to Form an LLC in Washington?

Washington's Certificate of Formation does not come with a fixed processing time. It varies by method, and online filings typically process faster than mail, so the Washington Corporations and Charities Filing System is the safer default when timing matters.

Expedited processing adds $100 per entity and generally completes within about 3 business days, the one option with a stated timeframe. Budget for the Initial Report too: it is due within 120 days of approval, and it costs nothing if you file it at the same time as the Certificate of Formation.

The EIN follows, arriving in minutes online for SSN or ITIN holders, while the Form SS-4 route runs from same-day to several weeks. The bank account depends on both, since banks want the approved Certificate of Formation and the EIN letter. For non-US founders, those two steps set the real end date.

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.
• Writing off Form 5472 because the LLC hasn't earned anything: the IRS's filing clock runs independent of your revenue, so "nothing happened this year" isn't a reason to skip it.
• 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.

Filing your Certificate of Formation, applying for an EIN, lining up a Washington registered agent: Fin-Start takes on all of it for you. If you're incorporating from outside the US, it's also built to handle the Overseas Direct Investment (ODI) compliance that comes with that.

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.

Can I form a Washington LLC if I live outside the US?

Yes, and the steps above barely change, though a few get harder. You still need a registered agent with a physical Washington street address, which usually means a commercial service, and without an SSN or ITIN you apply for the EIN on Form SS-4 rather than online.

Some banks require an in-person visit, while a growing number of fintech and online-first platforms support remote account opening for foreign-owned LLCs. If your single-member LLC is 25% or more foreign-owned, Form 5472 becomes an annual filing even at zero revenue, and Washington-sourced gross receipts can still attract B&O tax.

Can a non-US resident start an LLC in Washington?

Yes. Washington sets no residency or citizenship requirement to own a Washington LLC. You will still need a registered agent with a physical Washington street address, which usually means a paid service if you are not in the state. Because you won't have an SSN, you apply for your EIN on Form SS-4 by phone, fax, or mail instead of the online tool. If your LLC is single-member and 25% or more foreign-owned, you also file Form 5472 with the IRS every year, even at zero revenue, or risk a $25,000 minimum penalty.

What are the annual filing requirements for a single-member LLC in Washington?

Every Washington LLC, including a single-member one, files an Annual Report with the Washington Secretary of State by the last day of its anniversary month, for a $70 fee. Miss it and a $25 delinquency fee applies, and more than 120 days past due can open the door to administrative dissolution after a 60-day cure notice. Washington also charges a Business and Occupation (B&O) tax on gross receipts, filed separately with the Department of Revenue, which can be owed even in a loss year. A single-member LLC that is 25% or more foreign-owned has an added federal obligation: Form 5472, filed yearly with the IRS.

Does a Washington LLC pay income tax?

Washington has no state personal or corporate income tax, a restriction rooted in the state constitution, so a Washington LLC's profits are not taxed at the state income-tax level. It does owe the Business and Occupation (B&O) tax, a gross receipts tax that applies to total revenue whether or not the business turns a profit. Federally, a standard LLC is a pass-through entity, so profits are reported on the owners' personal returns.