3 Best LLC Services in Delaware (2026): Your Questions Answered
Ask about Mainstay Filing ($199), DE Registered Agent.org ($199) and Delaware Registered Agent.ai ($199), in that order, when you need LLC formation services in Delaware in 2026. The costs split two ways: $110 to the state for the filing and $397 to $597 to a service across three years.
Answered by the Ask About LLC editorial team ·
Four quick answers
What does the state charge?
$110, one time
What comes after?
$400 each year
Registered agent
Yes, name one
Our pick
Mainstay Filing, DE Registered Agent.org then Delaware Registered Agent.ai
1. Mainstay Filing: best for owners who want upkeep handled
Annual price $199, renewal price $199, state fee on top
Mainstay Filing is the one to ask first in Delaware because the annual tax is filed for you inside the $199 yearly price, along with formation and the registered agent.
Over three years this costs $200 more than DE Registered Agent.org, and you hand off more filings in return.
Because the Annual LLC Tax is inside the service, the only extra is Delaware's own $400, billed at cost.
What the price covers
Your LLC formation, filed with the state
Registered agent for twelve months
Annual tax prepared and submitted
EIN application submitted
State fees passed through at cost
Good news
Formation, agent and report for $199 a year
Stays at $199 when you renew
EIN application is in the price
The catch
From year two you pay $100 more than at DE Registered Agent.org
Prices as of November 13, 2026. The state's own fees are in the checklist below.
Questions owners ask
What will forming an LLC cost in this state?
Set aside $110 for the state, plus $199 if you hire help in the first year.
Over three years the state collects $910, filing fee included. delcode.delaware.gov, read in October 2026 for this answer
What do I actually send the state?
The paper that starts the company is the Certificate of Formation of a Limited Liability Company, and it is submitted to the Delaware Secretary of State.
Legal basis: 6 Del. C. § 18-201. delcode.delaware.gov, read in October 2026 for this answer
Do I have to name a registered agent?
Every LLC must name a registered agent with an in-state street address.
The LLC itself, a Delaware resident, or a business entity formed in Delaware or authorized to do business there.
After formation you owe the Annual LLC Tax every year ($400). Be ready by this date, per the state: annual alternative-entity tax due on or before June 1.
Yes, you can. Filing on your own costs the state's fees only, $910 over three years.
A service adds $397 to $597 across three years, and with Mainstay Filing the reports are inside that figure.
What put number one on top?
On chores the price takes care of, worth 29%, Mainstay Filing comes out ahead.
We weigh five questions: what you pay over three years (33%), chores the price takes care of (29%), answers on the price page (14%), what happens at renewal (13%) and room to add states (11%).
Getting the Annual LLC Tax filed for you is worth more to us than a few dollars saved.
You can check the total by hand: take the filing fee, add two reports and any minimum tax. Costs that have no set amount are left for the text to explain.
Questions people also ask
Is the EIN application included?
Only Mainstay Filing covers it at no added cost. At the others, DE Registered Agent.org bills $99 and Delaware Registered Agent.ai bills $99.
What if I file the report late?
Delaware adds $200.
What do the picks cost over three years?
Mainstay Filing comes to $597; DE Registered Agent.org comes to $397; Delaware Registered Agent.ai comes to $397, before state fees.
Where do these numbers come from?
Each state fee links to its official page, and each service price is read from the company's own site.
Do I have to use a service?
No. What the law asks for is a filing, and it does not say who has to send it.
Who should I ask first about a LLC service in Delaware?
Mainstay Filing, because for $199 a year the formation, the registered agent and the annual tax are all taken care of. After that, DE Registered Agent.org and Delaware Registered Agent.ai.
Where did we look this up?
Our answer on Delaware yearly filing: Recurring obligation rests on corp.delaware.gov, a page we confirmed October 2026 and still point you to
Our answer on Delaware yearly filing: Recurring obligation rests on corp.delaware.gov, a page we confirmed October 2026 and still point you to
Our answer on Delaware yearly filing: HB 400 rests on legis.delaware.gov, a page we confirmed October 2026 and still point you to
Our answer on Delaware report due date rests on delcode.delaware.gov, a page we confirmed August 2026 and still point you to
Our answer on 6 Del rests on delcode.delaware.gov, a page we confirmed August 2026 and still point you to
Our answer on Delaware registered agent statute rests on delcode.delaware.gov, a page we confirmed October 2026 and still point you to
Mainstay Filing Delaware service page, read November 13, 2026
DE Registered Agent.org pricing page, read November 13, 2026
Delaware Registered Agent.ai pricing page, read November 13, 2026