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Biz Formation Report

Rankings of registered agents, LLC formation and foreign registration services in all 50 states.

Registered agents report · Delaware

3 Best Registered Agents in Delaware (2026)

By the Biz Formation Report editorial team

Biz Formation Report ranks registered agents in Delaware for 2026 as Mainstay Filing ($149 a year), Delaware Registered Agent.ai ($99 a year) and DE Registered Agent.org ($99 a year), in that order. Mainstay Filing earns the top grade: a $149 yearly plan that works in every state, renewing at $149.

No.1

Top pick on this page

1. Mainstay Filing: best for all fifty states

Score9.2out of 10
$149 a year, unchanged at renewal

Top grade, Mainstay Filing: $149 per year for an agent that goes wherever the company goes, plus free scans of the first three government mailings each year.

A company still to be formed can use Mainstay's $199-a-year package, which files the Delaware paperwork and the annual tax.

Over three years Mainstay costs $150 more than Delaware Registered Agent.ai; our grading treats the broader coverage as worth that.

What you get

  • A physical address in the state on the public record
  • Service of process scanned and uploaded within one business day, free
  • Scans of the first three government mailings each year, free
  • Compliance reminders

Good

  • $149 a year, no renewal increase
  • Served papers scanned within the same business day, free
  • Open to LLCs, corporations, LPs, LLPs and nonprofits
  • Three government mailings a year scanned at no cost

Weak spots

  • The agent alone costs $50 a year more than Delaware Registered Agent.ai
  • You file annual reports yourself on the agent plan
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing review
No.2

Best yearly price

2. Delaware Registered Agent.ai: best for the lowest annual price on this list

Score9.0out of 10
$99 a year, unchanged at renewal

Second grade, Delaware Registered Agent.ai: $99 a year flat, with online scans of any legal papers served.

Served legal papers go to the in-state address Delaware Registered Agent.ai provides, and you receive scans of them online.

What you get

  • The state street address required for the registered office
  • Served legal documents are scanned and made available online

Good

  • Also forms LLCs and includes the first agent year
  • A lower yearly price than Mainstay Filing
  • $99 per year, same when it renews

Weak spots

  • The Annual LLC Tax filing is left to you
  • Serves Delaware only; other states need a separate agent
Visit Delaware Registered Agent.aiPartner link. We may earn money if you buy.
Read the Delaware Registered Agent.ai review
No.3

Delaware specialist

3. DE Registered Agent.org: best for companies based in Delaware

Score8.8out of 10
$99 a year, unchanged at renewal

Third grade, DE Registered Agent.org: $99 a year flat, with online scans of any legal papers served.

With DE Registered Agent.org, the registered office has a street address in the state, and served papers reach you as online scans.

Prices and features do not separate Delaware Registered Agent.ai from DE Registered Agent.org; either works.

What you get

  • An in-state street address as the registered office
  • Papers served on the company are scanned and delivered to your account

Good

  • Also forms LLCs and includes the first agent year
  • Costs less per year than Mainstay Filing
  • $99 a year, unchanged at renewal

Weak spots

  • The Annual LLC Tax filing is left to you
  • Serves Delaware only; other states need a separate agent
Visit DE Registered Agent.orgPartner link. We may earn money if you buy.
Read the DE Registered Agent.org review

Summary of the 3 grades

RankProviderGradePrice per yearRenewal priceBest fitSite
1Mainstay Filing9.2$149$149/yrOne agent across fifty statesVisit Mainstay FilingPartner link. We may earn money if you buy.
2Delaware Registered Agent.ai9.0$99$99/yrThe lowest yearly price we rank hereVisit Delaware Registered Agent.aiPartner link. We may earn money if you buy.
3DE Registered Agent.org8.8$99$99/yrThe lowest yearly price we rank hereVisit DE Registered Agent.orgPartner link. We may earn money if you buy.

The grades are editorial: Biz Formation Report assigns every mark out of 10 using the criteria on How we rank, not customer ratings.

Delaware registered agent prices, 2026: year one, renewal and three-year outlay

ProviderYear 1Year 2Year 3Three-year outlayRenewal at the same price
Mainstay Filing$149$149$149$447Yes
Delaware Registered Agent.ai$99$99$99$297Yes
DE Registered Agent.org$99$99$99$297Yes

All prices were taken from the companies' own websites on November 12, 2026. Delaware's own fees are the same whichever agent is named.

How the grades were set

Of the grade, 32% rests on three-year bill and 32% on what the money buys; renewal handling, local rules match and pricing openness share the remaining 36%. What the money buys decided Delaware.

Mainstay's agent plan grades higher on coverage: served papers are scanned the same business day at no fee, the price is identical in all fifty states and three government mailings a year are scanned free. Delaware Registered Agent.ai wins on cost, and the margin is thin.

Every criterion and weight is listed on How we rank.

Delaware registered agent rules according to Delaware Secretary of State (official)

Every LLC must name a registered agent with an in-state street address. 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. Authority: 6 Del. C. § 18-104.

Delaware's Annual LLC Tax: cost, deadline and your agent

The Annual LLC Tax is due from every Delaware LLC every year, by annual alternative-entity tax due on or before June 1. The state charges $400. A late filing adds $200. Related notices are mailed to your registered agent.

Delaware registered agent: common questions

Does a Delaware LLC have to maintain a registered agent?

Yes. The state expects every LLC to keep a registered agent on record, and Delaware requires that agent to have a street address inside its borders.

How much do Delaware registered agents charge per year?

Annual charges run from $99 to $149, and prices are unchanged at renewal.

Can the owner be the company's own registered agent?

Yes, provided you meet the state's requirements. The LLC itself, a Delaware resident, or a business entity formed in Delaware or authorized to do business there.

What is the filing deadline for the Delaware Annual LLC Tax?

The deadline: annual alternative-entity tax due on or before June 1. The state charges $400. Miss it and $200 is added.

Which registered agents does this report rank?

Mainstay Filing ($149 a year), Delaware Registered Agent.ai ($99 a year) and DE Registered Agent.org ($99 a year), in descending order of grade.

What is the best-value registered agent in Delaware?

Mainstay Filing: $149 a year, flat at renewal, with papers served on the company scanned the same business day at no charge.

More from us

Source notes

  1. Delaware yearly filing: Recurring obligation, official source (verified October 2026)
  2. Delaware yearly filing: Recurring obligation, official source (verified October 2026)
  3. Delaware yearly filing: HB 400, official source (verified October 2026)
  4. Delaware report due date (verified August 2026)
  5. 6 Del. C. § 18-201 (verified August 2026)
  6. Delaware registered agent statute (verified October 2026)
  7. Pulled November 12, 2026: Mainstay Filing, Delaware service page
  8. Pulled November 12, 2026: Delaware Registered Agent.ai, pricing and service pages
  9. Pulled November 12, 2026: DE Registered Agent.org, pricing and service pages