Place1
Number one hereMainstay Filing
1. Mainstay Filing: best for companies that may expand
Annual price $149; renewal price $149
Our mark9.2out of 10
Top of our list: Mainstay Filing, for a flat $149 plan that also works in the other forty-nine states, so a Washington company that expands keeps one agent.
Mainstay's $199 yearly package goes further: formation plus your annual report.
The three-year premium over WA Registered Agent.org is $150; coverage outweighs it in our scoring.
What you get
- A physical in-state address on the public record
- Service of process scanned the same business day, no fee
- First three government mailings a year scanned free
- Compliance reminders
Why pick it
- First three government mailings a year scanned free
- $149 yearly, no renewal increase
- Works for LLCs, corporations, LPs, LLPs and nonprofits
- Service of process scanned the same business day, no fee
Less good
- Pricier than WA Registered Agent.org by $50 a year
- Agent-only plan: reports are not filed for you
Place2
Lower renewal than MainstayWA Registered Agent.org
2. WA Registered Agent.org: best for price-first founders
Annual price $99; renewal price $99
Our mark8.8out of 10
Number 2 is WA Registered Agent.org: an in-state agent for $99 a year that scans served papers to you online.
It provides the in-state registered office address and posts scans of served legal papers online.
What you get
- A registered office address in the state
- Scans of served documents, online
Why pick it
- Forms LLCs too (first agent year included)
- Lower yearly price than Mainstay Filing
- $99 a year, the same at renewal
Less good
- Filing the annual report is not in the price
- Washington only
Quick comparison: Washington
| Rank | Service | Our score | Annual price | Renewal price | Best for | Link |
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| 1 | Mainstay Filing | 9.2 | $149 | $149/yr | Agent plus fifty-state coverage | Visit Mainstay FilingPartner link. We may earn money if you buy. |
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| 2 | WA Registered Agent.org | 8.8 | $99 | $99/yr | Lowest yearly price on this list | Visit WA Registered Agent.orgPartner link. We may earn money if you buy. |
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The Founders Review sets these scores itself from the five criteria on our method page; they are not user ratings.
Washington pricing for 2026: what each service costs
| Service | Year one | Year two | Year three | Three-year total | Same price at renewal |
|---|
| Mainstay Filing | $149 | $149 | $149 | $447 | Yes |
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| WA Registered Agent.org | $99 | $99 | $99 | $297 | Yes |
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Published prices, read November 12, 2026 on each company's site. Washington's own filing fees are the same whichever agent you name.
Why this order
Five criteria set the order; the two heaviest are three-year cost and what one price covers. Here what one price covers made the difference.
Coverage tipped it: Mainstay works in every state at one price, while WA Registered Agent.org wins only on cost.
Read the full criteria on our How we rank page.
Washington registered agent requirements from Washington Secretary of State
Every LLC must name a registered agent with an in-state street address. The address has to be a physical street address in Washington. P.O. boxes and private mailboxes are not accepted. The rule is in RCW 23.95.415.
Your annual report in Washington
Expect the annual report every year, due last day of the entity's anniversary month; the state charges $70. Late filing costs $25. Notices about it arrive at your registered agent.
Washington registered agent questions
Does a Washington LLC need a registered agent?
Yes. Every LLC must name a registered agent with an in-state street address.
How much does a registered agent cost in Washington?
From $99 to $149 a year, the same at renewal.
Can I be my own registered agent?
Only if you meet the state's rule. A commercial registered agent listed with the Secretary of State, a noncommercial agent (any person or business with a Washington address), or the holder of a named position in the company. The agent consents in advance.
When is the Washington annual report due?
It is due last day of the entity's anniversary month and the state fee is $70. Late filings cost $25 more.
Which registered agents do you rank here?
Mainstay Filing ($149 a year) and WA Registered Agent.org ($99 a year), ranked in that order.
Which Washington registered agent is the best value?
Mainstay Filing, because $149 a year, the same at renewal, with the first three government mailings each year scanned free.