LLC Review Desk's 2026 picks for LLC services in Delaware, favorite first, are DE Registered Agent.org ($199), Mainstay Filing ($199) and Delaware Registered Agent.ai ($199). DE Registered Agent.org is our favorite, because the Delaware formation costs $199 over the state's fee, with the registered agent free the first year, and keeping the agent is $99 a year.
By the LLC Review Desk editorial team
Position 1
Our top pick
1. DE Registered Agent.org: best for a Delaware LLC that will stay put
$199 to form, then $99 a year for the agent, with the state fee on top
Our score
9.3out of 10
9.3 out of 10
Our favorite is DE Registered Agent.org, because $199 for formation on top of the state fee, then $99 a year for the agent.
You get a street address in the state for your registered office, and any papers served on the company are scanned into your online account.
The Annual LLC Tax isn't part of its published price, so you send it to Delaware yourself every year.
Over three years it costs less than Mainstay Filing, and cost is one of our two biggest criteria.
In the price
LLC filing done for you
A first year as your registered agent
What we like
A $199 service price plus the state fee
Year-two agent price: $99
Covers your first year of registered agent service
2. Mainstay Filing: best for formation, agent and annual tax in one simple price
$199 a year, and the state fee goes on top ($309 at checkout)
Our score
8.8out of 10
8.8 out of 10
Coming in second is Mainstay Filing, because for one yearly price of $199 you get the Delaware filing, registered agent service and the annual tax, then $199 at renewal.
When your plan renews, Mainstay files the Annual LLC Tax for you. Delaware charges $400 every year for it, and the date is annual alternative-entity tax due on or before June 1, and a late one costs $200 more. Mainstay passes the state's fee along at cost.
DE Registered Agent.org is $200 cheaper over three years, so Mainstay Filing comes second on cost.
In the price
Formation paperwork prepared and sent in
A full year as your registered agent
Your annual tax, prepared and filed for you
Your EIN application, taken care of
What we like
One yearly price of $199 that includes the annual tax
The EIN application is included
Delaware's fee is passed through at cost
Renews at $199, no add-ons
Trade-offs
After year one, its agent costs $100 a year more than DE Registered Agent.org's
Our scores out of 10 are editorial: LLC Review Desk sets them using the criteria on How we rank. They aren't customer ratings.
What Delaware LLC services cost in 2026: year one, renewals and three years
Service
First year
Second year
Third year
Three-year total
Handles the Annual LLC Tax too
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
We took each price from the company's own pages on November 12, 2026. On top of every row, Delaware charges a $110 filing fee, which isn't in these totals.
Why we ordered them this way
Two things count most to us, three-year cost and filings in the price, at 29% each. Renewal price, state fit and up-front totals share 42%, and Delaware came down to three-year cost.
DE Registered Agent.org comes to $397 over three years, which is $200 less than Mainstay Filing. Mainstay would file the Annual LLC Tax too, but you can do it yourself for the state fee, so the lower price won here.
You can read every criterion and weight on How we rank.
The Delaware LLC filing fee and form, from the state
Heads up: the Delaware Secretary of State takes $110 when you file the Certificate of Formation of a Limited Liability Company. Every service below adds that fee at cost.
What a Delaware LLC needs after it is formed
There's one recurring item: the Annual LLC Tax, every year, by annual alternative-entity tax due on or before June 1. The state asks for $400. A late filing adds $200. Every LLC must name a registered agent with an in-state street address.
Your questions about Delaware LLC services
How much does forming an LLC in Delaware set you back?
The state charges $110 to file, and services charge $199.
What paperwork makes the LLC official?
You send the Certificate of Formation of a Limited Liability Company to the Delaware Secretary of State.
Does the Delaware formation form ask me to name a registered agent?
Yes. You list a registered agent when you file and keep one on record, using a street address in Delaware.
Is there paperwork after the LLC is formed?
Yes, one item: the Annual LLC Tax. It comes every year, by annual alternative-entity tax due on or before June 1, and the state asks $400.
Is the EIN included in the price?
With Mainstay Filing, yes; it comes with the yearly price. DE Registered Agent.org and Delaware Registered Agent.ai tack on $99 for it. You can also ask the IRS for an EIN yourself, free of charge.
Who should I use to form my Delaware LLC?
DE Registered Agent.org, because forming in Delaware is $199 plus the state fee, and your first year as registered agent is included, then $99 a year.