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The Formation Desk

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

LLC service picks · Delaware

3 Best LLC Services in Delaware (2026)

The The Formation Desk call for LLC services in Delaware in 2026: DE Registered Agent.org ($199), Mainstay Filing ($199) and Delaware Registered Agent.ai ($199), in that order. DE Registered Agent.org takes the call: $199 to form, state fee extra, then $99 a year for the agent.
Written by The Formation Desk editorial team
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Our top pick

1. DE Registered Agent.org: best for a Delaware LLC with no plans to expand

Form for $199; the agent is $99 a year after that, plus the state fee

Editorial score 9.5 out of 10

The desk picks DE Registered Agent.org: $199 plus the Delaware filing fee, first-year registered agent service included, then $99 a year.

You get an in-state street address as the registered office, and papers served there are scanned into your account.

It leaves the Annual LLC Tax out of its prices, so you send that filing to Delaware yourself every year.

Add up three years and it undercuts Mainstay Filing, and cost is one of our two heaviest criteria.

In the price

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

Strengths

  • Registered agent service for year one is covered
  • A $199 formation price, state fee on top
  • Then $99 a year for agent service

Cons

  • No Annual LLC Tax filing included
  • EIN application will cost you $99 more
Visit DE Registered Agent.orgPartner link. We may earn money if you buy. DE Registered Agent.org up close
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Best all-in yearly price

2. Mainstay Filing: best for formation, agent and annual tax in a single price

$199 a year plus the state fee, $309 due at checkout

Editorial score 9.3 out of 10

Runner-up, Mainstay Filing: one $199 yearly bill covers the Delaware formation filing, the registered agent and the annual tax.

Mainstay files the Annual LLC Tax for you when you renew. Delaware wants $400 every year, by annual alternative-entity tax due on or before June 1, and a late filing tacks on $200; Mainstay hands the state's fee through at cost.

DE Registered Agent.org undercuts Mainstay Filing by $200 over three years, and that is why Mainstay sits lower on cost.

In the price

  • Your LLC formation, handled
  • Registered agent service for the full year
  • Annual tax, filed by Mainstay
  • EIN application handled

Strengths

  • EIN application comes with the package
  • Delaware's fee passes through at cost
  • $199 on renewal, nothing extra
  • One $199 yearly price that takes in the annual tax

Cons

  • Its agent renews at $100 a year more than DE Registered Agent.org
Visit Mainstay FilingPartner link. We may earn money if you buy. Mainstay Filing up close
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Best value here

3. Delaware Registered Agent.ai: best for keeping it local in Delaware

Form for $199; the agent is $99 a year after that, plus the state fee

Editorial score 9.1 out of 10

Third, Delaware Registered Agent.ai: $199 plus the Delaware filing fee, first-year registered agent service included, then $99 a year.

You get an in-state street address as the registered office, and papers served there are scanned into your account.

It leaves the Annual LLC Tax out of its prices, so you send that filing to Delaware yourself every year.

DE Registered Agent.org and Delaware Registered Agent.ai list the same prices and plan features, so it is close and either one works.

In the price

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

Strengths

  • The first registered agent year is included
  • Year-two agent price: $99
  • A $199 formation price, state fee on top

Cons

  • No Annual LLC Tax filing included
  • EIN application will cost you $99 more
Visit Delaware Registered Agent.aiPartner link. We may earn money if you buy. Delaware Registered Agent.ai up close

The desk's 3 picks in brief

Pick Service Desk score Service fee Year two Good for Visit
1 DE Registered Agent.org 9.5 $199 $99/yr A Delaware-only LLC on a shoestring Visit DE Registered Agent.orgPartner link. We may earn money if you buy.
2 Mainstay Filing 9.3 $199 $199/yr Formation, agent and annual tax in a single price Visit Mainstay FilingPartner link. We may earn money if you buy.
3 Delaware Registered Agent.ai 9.1 $199 $99/yr A Delaware-only LLC on a shoestring Visit Delaware Registered Agent.aiPartner link. We may earn money if you buy.

The scores out of 10 are the desk's own, drawn from the criteria on How we rank. They are not customer ratings.

What a Delaware LLC service costs in 2026: year one, renewal and the three-year bill

Service Year one Year two Year three Bill over three years Annual LLC Tax filed on your behalf
DE Registered Agent.org $199 $99 $99 $397 No
Mainstay Filing $199 $199 $199 $597 Yes
Delaware Registered Agent.ai $199 $99 $99 $397 No

Every price here was read off the company's own pages on November 12, 2026. Delaware's $110 filing fee comes on top of every row and is left out of these totals.

Why it falls this way

The desk's method puts 33% on spend over three years and 33% on work the price removes, and 34% across what renewal looks like, fit with the state and plain price display. For Delaware, spend over three years did the deciding.

DE Registered Agent.org comes to $397 over three years, $200 less than Mainstay Filing. Mainstay would file the Annual LLC Tax too, but an owner can do that alone for just the state fee, so the lower price won.

The full criteria and weights are on How we rank.

Delaware LLC filing fee and form: the official numbers

It takes $110 to file the Certificate of Formation of a Limited Liability Company with the Delaware Secretary of State. Every service here adds that fee at cost on top of its own price.

After you form: keeping the Delaware LLC in order

Send in the Annual LLC Tax every year, by annual alternative-entity tax due on or before June 1. It costs $400. Late means $200 extra. Every LLC must name a registered agent with an in-state street address.

Delaware LLC service: reader questions

What will setting up an LLC in Delaware cost you?

$110 goes to the state and $199 to the service.

What do you file to create the LLC?

The Certificate of Formation of a Limited Liability Company, sent to the Delaware Secretary of State.

Does a Delaware LLC have to line up a registered agent on day one?

Yes. Delaware expects a registered agent from the start, with a street address inside the state.

What keeps coming due once a Delaware LLC exists?

One filing: the Annual LLC Tax, every year, due annual alternative-entity tax due on or before June 1, costing $400.

Does the service price take care of the EIN?

Mainstay Filing builds it into the yearly price. DE Registered Agent.org and Delaware Registered Agent.ai tack on $99. The IRS never charges for an EIN.

Who is our pick for an LLC service in Delaware?

DE Registered Agent.org, since Delaware formation for $199 on top of the state's fee, year-one agent included, then $99 a year to keep the agent.

Related pages

Where the numbers came from

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