The Real Cost of a Washington Limited Partnership

The one unavoidable cost of creating a Washington limited partnership is the state filing fee for the Certificate of Limited Partnership, submitted through the Corporations and Charities Filing System (CCFS). This is a one-time charge, paid when you file, and it is what actually brings the LP into existence. The current amount is shown on the cost card on this page — always trust the state's live fee schedule and this card over older figures floating around third-party sites, since fees change.

Expedited processing

Standard online filings process within a few business days. If you are up against a deadline — a closing, a lease, an investor's timeline — Washington offers expedited handling for an additional fee. It is optional; if your timeline has slack, standard processing costs nothing extra.

Name reservation

If you want to lock your chosen name before you are ready to file the certificate, a name reservation carries a small separate fee and holds the name for a set period. This is optional and only worth it if you need the runway.

Formation is a one-time expense. Keeping the LP alive and compliant is a recurring one, and the recurring costs are where owners who only budgeted for formation get caught off guard.

Annual report fee

Washington requires every LP to file an annual report with the Secretary of State, due around your formation anniversary. It carries a state fee each year, shown on the cost card. The report itself is administrative — it confirms your registered agent and partner information — but the fee and the deadline are real, and missing the deadline can add late consequences and eventually put the LP at risk of administrative dissolution.

Registered agent

You must maintain a registered agent for the life of the LP. If you serve as your own agent, there is no separate fee, but you take on the exposure and availability burden. If you use a commercial registered agent — which most LPs do, to keep a general partner's home address off the public record — that is an annual service cost. With Mainstay Filing it never becomes a distinct cost at all: the agent is built into the one flat yearly price alongside the formation work and the annual report.

Business licensing and B&O tax

This is the cost most new LPs underestimate. If your partnership does taxable business in Washington, you register through the Department of Revenue's Business Licensing Service, which carries its own fees, and you owe the Business & Occupation (B&O) tax on your gross Washington receipts. The B&O is a gross-receipts tax, not an income tax, so it applies to revenue whether or not the LP turns a profit. Budget for it as a cost of doing business, not an afterthought.

Beyond the state's fixed and recurring fees, the total cost of running an LP depends on choices you make. None of these are charged by the Secretary of State, but they are real budget items.

Professional help

• Attorney to draft your limited partnership agreement and advise on the general/limited partner split. For an LP, a well-drafted agreement protects the limited partners' liability shield, so this is money well spent.
• CPA or accountant for the partnership's Form 1065, the partners' K-1s, B&O tax filings, and self-employment tax planning for the general partners.

Operational expenses

• Business license endorsements at the city or state level, depending on your activity and location
• Bank account fees, which vary by institution
• Certificate of existence / good standing copies, if a bank, lender, or another state requires proof of your standing

Foreign registration, if applicable

If your LP was formed in another state and you are registering to do business in Washington, foreign registration has its own state fee, and you still owe the annual report and B&O tax on Washington activity. That is covered on the foreign registration page.

The honest way to think about LP costs is in three buckets: the one-time cost to form, the fixed annual cost to stay compliant, and the variable cost of actually operating.

One-time

• Certificate of Limited Partnership filing fee (state)
• Optional expedited processing if you are on a deadline
• Optional name reservation
• Attorney fee for the partnership agreement, if you use one

Every year

• Annual report fee (state)
• Registered agent service, if you use a commercial agent
• Accounting fees for the partnership return and K-1s
• B&O tax on Washington gross receipts, if you do business here

As needed

• Business license endorsements
• Certificate of good standing copies
• Amendments (for example, changing your registered agent)

What you will not find in an honest budget are surprise state fees hidden in the formation itself. Washington's charges are published and predictable. The costs that catch people off guard are the ongoing ones — the annual report, the registered agent, and above all the B&O tax — so plan for those from the start rather than treating the formation fee as the whole story.

When you form your LP through Mainstay Filing, a single flat yearly charge covers the preparation and submission of the Certificate of Limited Partnership, registered agent service for every year we act for you, and the preparation and filing of the annual report. The cost card on this page reflects the current pricing, and what is displayed is what is charged — no add-ons revealed at checkout, no state fee quietly marked up beyond what the state actually charges.

What our fee does not include are the third-party and government costs that are genuinely outside our service: the Department of Revenue's business licensing fees, your B&O tax, your accountant's fees, and any attorney work on your partnership agreement. We are transparent about the line between our service fee and the state and third-party costs so you can budget for the whole picture, not just the formation.