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Plain CharterLLC questions, short answers.

Short answers · Delaware

3 Best Registered Agents in Delaware (2026), Plainly Answered

Asked who to hire in Delaware in 2026, we'd say Delaware Registered Agent.ai ($99 a year), DE Registered Agent.org ($99 a year) and Mainstay Filing ($149 a year), in that order. Year one is $99 to $149. Three years come to $297 to $447.

By the Plain Charter editorial team ·

Plainly put

Mandatory?
Yes, required
Called
Registered agent
What a service costs
$99 to $149 yearly
Who to hire
Delaware Registered Agent.ai, DE Registered Agent.org then Mainstay Filing

Who we'd hire in Delaware

Our order, explained on how we choose.
1First choice

1. Delaware Registered Agent.ai: best for a low yearly price

$99 per year (renewal $99)

Delaware Registered Agent.ai leads our list: $99 a year buys an in-state agent.

Lower three-year cost than Mainstay Filing puts it first for a company staying in Delaware.

The price covers

  • An office address in the state
  • Legal papers posted online

Upsides

  • Lower yearly cost than Mainstay Filing
  • Flat $99 a year

What to weigh

  • No coverage outside the state
  • No help with the Annual LLC Tax
Visit Delaware Registered Agent.aiPartner link. We may earn money if you buy.
2One-state plan

2. DE Registered Agent.org: best for a second in-state choice

$99 per year (renewal $99)

Pick number 2, DE Registered Agent.org, makes the list because $99 a year buys an in-state agent.

Same published prices as Delaware Registered Agent.ai; pick whichever you prefer.

The price covers

  • An office address in the state
  • Legal papers posted online

Upsides

  • Lower yearly cost than Mainstay Filing
  • Flat $99 a year

What to weigh

  • No coverage outside the state
  • No help with the Annual LLC Tax
Visit DE Registered Agent.orgPartner link. We may earn money if you buy.
3All fifty states

3. Mainstay Filing: best for one agent wherever you go

$149 per year (renewal $149)

Mainstay Filing is next: it costs $149 a year, $149 at renewal, and one account covers any state.

Three years cost $150 more than Delaware Registered Agent.ai.

The price covers

  • A physical address on file
  • Three government mailings a year scanned free
  • Covers LLCs, corporations, LPs, LLPs and nonprofits

Upsides

  • Flat $149 a year
  • Covers every state

What to weigh

  • Higher by $50 a year
  • Report filing needs the formation package
Visit Mainstay FilingPartner link. We may earn money if you buy.

How the picks compare

#PickTo startYear two onThree-year totalIn the price
1Delaware Registered Agent.ai$99$99/yr$297an office address in the state; legal papers posted onlineVisit Delaware Registered Agent.aiPartner link. We may earn money if you buy.
2DE Registered Agent.org$99$99/yr$297an office address in the state; legal papers posted onlineVisit DE Registered Agent.orgPartner link. We may earn money if you buy.
3Mainstay Filing$149$149/yr$447A physical address on file; three government mailings a year scanned free; Covers LLCs, corporations, LPs, LLPs and nonprofitsVisit Mainstay FilingPartner link. We may earn money if you buy.
Read from company pricing on November 12, 2026; three years means the first year plus two renewals.

Your questions

Must the LLC name a registered agent?

Every LLC must name a registered agent with an in-state street address.

Legal basis: 6 Del. C. § 18-104. from delcode.delaware.gov · October 2026

Who may act as agent?

The LLC itself, a Delaware resident, or a business entity formed in Delaware or authorized to do business there.

Meeting that rule yourself means you can serve without paying anyone.

What does an agent cost?

$99 to $149 a year from the services we'd use, or $297 to $447 over three years.

Your choice of agent leaves state fees unchanged.

What is the agent's job?

It signs for legal papers and state notices on the LLC's behalf, in Delaware.

What matters most is that you hear about every document quickly. Read: service of process

What does the state charge yearly?

Keep the Annual LLC Tax current, every year, for $400. When: annual alternative-entity tax due on or before June 1.

from legis.delaware.gov · October 2026

Why these three?

Three-year cost (35% of our weighting) put Delaware Registered Agent.ai first.

Most of our weighting sits on three-year cost and what the price takes off your plate.

Delaware Registered Agent.ai keeps $150 in your pocket over three years compared with Mainstay Filing.

Our full method

Delaware requirements checklist

WhatAmount or ruleOfficial source
Fee to form$110from delcode.delaware.gov · October 2026
Registered agentYes, requiredfrom delcode.delaware.gov · October 2026
Annual LLC Tax$400 every yearfrom legis.delaware.gov · October 2026
State total, years 1 to 3$910Our sum of the fees above
Every amount links to its official source. The three-year line is our own sum of filing, reports and any minimum tax.

More answers

Can an owner be the agent?

Yes, provided you fit the state's rule. Many owners still hire a service for privacy.

Which address counts?

The address has to be a registered office in Delaware. An entity agent keeps a business office there that is generally open; an individual agent has to be generally present there. A virtual office or mail-forwarding service alone does not qualify.

Three years in, what has each cost?

Delaware Registered Agent.ai $297, DE Registered Agent.org $297 and Mainstay Filing $447

Where do these figures come from?

Official Delaware sources for state fees, company price pages for service fees.

Do I need to hire a service?

Not required. Services charge for doing the paperwork for you.

Who is your first choice in Delaware?

Delaware Registered Agent.ai tops our list because its agent service costs $99 a year with a street address on file; DE Registered Agent.org and Mainstay Filing come next.

Where these answers come from

  1. Delaware yearly filing: Recurring obligation: corp.delaware.gov (October 2026)
  2. Delaware yearly filing: Recurring obligation: corp.delaware.gov (October 2026)
  3. Delaware yearly filing: HB 400: legis.delaware.gov (October 2026)
  4. Delaware report due date: delcode.delaware.gov (August 2026)
  5. 6 Del: delcode.delaware.gov (August 2026)
  6. Delaware registered agent statute: delcode.delaware.gov (October 2026)
  7. Delaware Registered Agent.ai pricing page, prices as of November 12, 2026
  8. DE Registered Agent.org pricing page, prices as of November 12, 2026
  9. Mainstay Filing Delaware service page, prices as of November 12, 2026