Foreign Limited Partnership Registration in Washington

Washington's limited partnership act, RCW 25.10, passes the work to the general business code. Section 25.10.646 sends a foreign limited partnership to Article 5 of chapter 23.95 RCW, and the partnership goes through that process before transacting business. After registration, the law of the formation state continues to govern the partnership's structure and each limited partner's exposure to its debts, while Washington grants no greater privileges than a domestic partnership enjoys (RCW 25.10.641).

Your counterpart at the state is the Corporations and Charities Division of the Secretary of State, based in Olympia. A limited partnership files the same Foreign Registration Statement that profit corporations and LLPs use, ticking the box for LLLP where that applies. You can file in CCFS online, or mail paper to PO Box 40234. Acceptance brings a UBI number if the partnership has none.

Washington's rule is that registration comes first, doing business second. The Division says outright that it will not rule on whether a particular business is doing business here, and it points people to legal advice, because the answer touches liability, licensing and tax. For limited partnerships, RCW 25.10.651 adopts the general roster in RCW 23.95.520, whose text says it includes but is not limited to:

• Taking part in litigation or arbitration, as claimant, defendant or settling party
• Partner meetings and other internal business
• Keeping financial accounts
• Running a transfer office or depository for the partnership's own interests
• Sales routed through independent contractors
• Orders that bind only once accepted outside Washington, where the contract calls for no local work except delivery and installation
• Borrowing, mortgages and security interests, plus recovering on or enforcing them
• A solitary deal that is finished in under a month and is not repeated
• Owning, without more, property
• Interstate commerce
• A branch campus of an approved out-of-state degree-granting school
• Having a remote worker who lives in Washington

The remote-worker item took effect June 11, 2026. Sitting as a partner or governor of some other entity that operates in Washington does not make you a Washington business. The roster leaves service of process, taxes and other regulation to different laws. A partnership with Washington rental property sits at the edge of this list: owning property without more is covered, while collecting rent, handling tenants or keeping an office goes further. A short conversation with a Washington attorney is wise.

State fees for registration are $180. Online filers also pay a $20 processing fee, and mailing a check avoids it. Make payment out to the Secretary of State. Faster handling costs another $100, and no fee is refunded.

The statement collects:

• The partnership's name as it reads on the home certificate, with an alternate name for Washington if needed
• Entity type, including whether it is an LLLP
• Jurisdiction of formation, formation date and duration
• A physical principal office (no PO box or private mailbox) and an email address
• Governors, meaning the general partners, noting that a business cannot govern itself
• A Washington registered agent and the agent's signed consent
• The partnership's planned Washington activity and its start date
• A registration start date that can be set as many as 90 days ahead

No partnership agreement or certificate of limited partnership goes in. The online instructions even tell filers not to upload operating agreements and similar internal papers.

From the formation state, Washington wants proof of existence in certificate form, or a comparable record. Under RCW 23.95.510(2) it carries a date within the sixty days before your submission and is authenticated by whoever holds the partnership's records in the formation state. A statement filed without one is sent back.

Build your calendar around the filing date. A certificate pulled for another state's registration last quarter will probably be stale. Filing online means uploading an image, and WAC 434-112-070 makes you keep the original and produce it within ten business days if the Division or the Attorney General demands it. Prices for these documents are set by the home office.

RCW 23.95.305(3) governs naming: the limited partnership's name carries the words "limited partnership" or the abbreviation LP or L.P., and a partner's own name may appear in it. An LLLP says "limited liability limited partnership" or LLLP and avoids LP. A home name that fails this test, or that Washington has already taken, is replaced on the form by an alternate name under RCW 23.95.525.

The registered agent

Continuous coverage by a Washington registered agent is mandatory. The partnership can pick a commercial agent from the Secretary of State's listing, or a non-commercial agent meaning a person or company with a Washington street address that consents in writing, or a named office within the partnership. Consent is needed in every case. Agent addresses must be physical, PO boxes and private mailboxes are rejected, and the state describes the registered office as the place the agent must be found in business hours.

An agent who resigns is released 31 days after the filing, and neither a resignation nor a switch of agents carries a fee.

A yearly report goes in by month's end in the month the partnership first registered, and the filing window opens 180 days earlier. The report costs $70, and a late one picks up a $25 delinquent fee. Unpaid fees, a skipped report or a lost agent can end the registration: the Secretary of State alerts the agent, and sixty days after the notice takes effect the registration is terminated if the problem remains. A requalification uses the same statement, with delinquent report fees added.

Changes to name, jurisdiction, principal office or agent details go in as an amendment, at $30, and a home-state name change needs a copy of the document that made it. A statement of withdrawal closes the registration at no charge (RCW 25.10.671 and 23.95.530). Business licensing and taxes are the Department of Revenue's department.

RCW 23.95.505 governs here, as for every foreign entity. Doing business unregistered leaves the partnership unable to bring a Washington lawsuit until it registers and covers the fees and penalties for its unregistered years. The restriction follows a successor or anyone assigned a related claim, and a judge can hold a case while deciding if a registration was needed.

The state also bills what registering and reporting would have cost, along with the statutory penalties. No fixed fine or per-day amount exists. Contracts and acts survive, the other party keeps its right to enforce a contract, and the partnership can answer a lawsuit. A limited partner's liability protection is not waived solely by the lapse, yet the Attorney General is empowered to seek a court order halting the partnership's Washington business in violation of the chapter.

An LP is not eligible for Mainstay Filing's foreign qualification checkout, which is designed for LLCs and for-profit corporations. The partnership, or its lawyer, submits the Foreign Registration Statement itself. Mainstay Filing serves in one capacity here, as Washington registered agent, for $149 a year with renewal at the same figure. The Washington address in the agent section of your statement is Mainstay Filing's, and the state publishes it.

Should a summons arrive at Mainstay Filing, you get a scan in your account by the close of that business day, free of charge, and Mainstay Filing waives its scan fee on a partnership's first three official government mailings per year. When another agent is currently on file, Mainstay Filing will submit the change-of-agent statement for you, adding nothing beyond the state's own charge, which for that statement is zero. The Washington registered agent page covers how the service works. Mainstay Filing is not a law firm.