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Filing Verdict

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

LLC service verdict · Delaware

3 Best LLC Services in Delaware (2026)

Filing Verdict's 2026 verdict on LLC services in Delaware: Mainstay Filing ($199), Delaware Registered Agent.ai ($199) and DE Registered Agent.org ($199), in that order. Mainstay Filing takes first place: $199 a year pays for the formation filing, a full year as your registered agent and the annual tax, renewing at $199.
The Filing Verdict editorial team
Our top pick in Delaware
Spot 1

1. Mainstay Filing: best for formation, agent and annual tax for one price

$199 each year plus the state fee ($309 due at checkout)

9.2Editorial score
out of 10

Mainstay Filing wins here: the Delaware formation, your registered agent and the annual tax all sit in a single $199 yearly charge.

Mainstay files the Annual LLC Tax for you as part of the renewal. Delaware charges $400 every year, due annual alternative-entity tax due on or before June 1, and a late filing adds $200; the state's fee is passed through at cost.

The three-year bill is $200 higher than Delaware Registered Agent.ai's, and the wider coverage is worth that to us.

What you get

  • Formation paperwork prepared and filed
  • A full year of registered agent service
  • The annual tax, prepared and filed
  • The EIN application

What we like

  • $199 at renewal, nothing extra
  • The EIN application comes with it
  • One $199 yearly price that includes the annual tax
  • Delaware's fee is passed through at cost

Cons

  • From year two its agent costs $100 a year more than Delaware Registered Agent.ai's
Visit Mainstay FilingPartner link. We may earn money if you buy. Our full Mainstay Filing verdict
Best for a Delaware-only company
Spot 2

2. Delaware Registered Agent.ai: best for a Delaware LLC that plans to stay local

Formation $199, then $99 a year for the agent, plus the state fee

8.7Editorial score
out of 10

Second place goes to Delaware Registered Agent.ai: a $199 formation fee on top of the state's own, then $99 a year for the agent.

The plan gives the company an in-state street address as its registered office, and papers served on the company are scanned to your online account.

The Annual LLC Tax filing is not in its published prices, so you file it with Delaware yourself every year.

What you get

  • Articles prepared and filed
  • A first year of registered agent service

What we like

  • Then $99 a year for agent service
  • $199 to file, state fee extra
  • Year-one registered agent service included

Cons

  • Does not take over the Annual LLC Tax
  • The EIN application is billed separately ($99)
Visit Delaware Registered Agent.aiPartner link. We may earn money if you buy. Our full Delaware Registered Agent.ai verdict
Best for a Delaware-only company
Spot 3

3. DE Registered Agent.org: best for a local Delaware filing

Formation $199, then $99 a year for the agent, plus the state fee

8.5Editorial score
out of 10

Third place goes to DE Registered Agent.org: a $199 formation fee on top of the state's own, then $99 a year for the agent.

The plan gives the company an in-state street address as its registered office, and papers served on the company are scanned to your online account.

The Annual LLC Tax filing is not in its published prices, so you file it with Delaware yourself every year.

Nothing in the published prices or features divides Delaware Registered Agent.ai from DE Registered Agent.org; pick either.

What you get

  • Articles prepared and filed
  • The first year as your registered agent

What we like

  • $199 to file, state fee extra
  • Year-two agent cost of $99
  • Includes the first year as your registered agent

Cons

  • Does not take over the Annual LLC Tax
  • The EIN application is billed separately ($99)
Visit DE Registered Agent.orgPartner link. We may earn money if you buy. Our full DE Registered Agent.org verdict

The 3 verdicts at a glance

No.ServiceVerdict scoreService feeYear twoBest forVisit
1Mainstay Filing9.2$199$199/yrFormation, agent and annual tax, one price Visit Mainstay FilingPartner link. We may earn money if you buy.
2Delaware Registered Agent.ai8.7$199$99/yrA Delaware-only LLC watching its budget Visit Delaware Registered Agent.aiPartner link. We may earn money if you buy.
3DE Registered Agent.org8.5$199$99/yrA Delaware-only LLC watching its budget Visit DE Registered Agent.orgPartner link. We may earn money if you buy.
Scores come from Filing Verdict's editors, out of 10, using the criteria explained on How we rank; they are not customer ratings.

Delaware LLC service prices for 2026: year one, renewals and three years

ServiceYear 1Year 2Year 3Total, 3 yearsAnnual LLC Tax handled for you
Mainstay Filing$199$199$199$597Yes
Delaware Registered Agent.ai$199$99$99$397No
DE Registered Agent.org$199$99$99$397No
Prices were read from each company's own pages on November 12, 2026. Delaware's $110 filing fee goes on top of every row and is not counted in these totals.

Why Mainstay Filing comes first

Two criteria lead Filing Verdict's method at 35% apiece: total over three years and paperwork the price handles. Renewal behavior, match to the state and up-front pricing share the other 30%, and Delaware came down to paperwork the price handles.

Delaware wants a report every year with a $400 state fee, and filing late adds $200. Mainstay's price includes that filing and Delaware Registered Agent.ai's does not, so the coverage score outweighed Delaware Registered Agent.ai's lower three-year cost.

The full list of criteria and weights is on How we rank.

Delaware LLC filing fee and form: official figures

Filing the Certificate of Formation of a Limited Liability Company costs $110 at the Delaware Secretary of State. Each service on this page adds that fee on top of its own price, at cost.

Delaware LLC upkeep after the filing

The Annual LLC Tax is filed every year, due annual alternative-entity tax due on or before June 1. The state fee is $400. A late filing adds $200. Every LLC must name a registered agent with an in-state street address.

Delaware LLC service: questions answered

What does it cost to form an LLC in Delaware?

The state filing fee is $110, and the service fee is $199.

Which form do I file to create the LLC?

You file the Certificate of Formation of a Limited Liability Company with the Delaware Secretary of State.

Does a Delaware LLC have to name a registered agent?

Yes. Delaware requires every LLC to keep a registered agent on file, and the agent needs a street address in the state.

Which yearly filings does a Delaware LLC owe?

Just the Annual LLC Tax, every year, due annual alternative-entity tax due on or before June 1 ($400 state fee).

Does the price include the EIN application?

Mainstay Filing includes it in the yearly price. Delaware Registered Agent.ai and DE Registered Agent.org bill $99 extra. The IRS charges nothing for an EIN.

Which LLC service is the best pick in Delaware?

Mainstay Filing, because one $199 yearly price that files the Delaware formation, acts as your registered agent and files the annual tax, renewing at $199.

See also

Sources and dates

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