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Registered agent worksheets · Colorado

3 Best Registered Agents in Colorado (2026): Worked Prices

The 2026 math for Colorado registered agents gives Mainstay Filing ($149/yr), CO Registered Agent.org ($99/yr) and Colorado Registered Agent.co ($99/yr), ranked best value first. Work it through: a first year of $99 to $149, then totals of $297 to $447 at year three.
Worked by the Formation Math editorial team

↓ Sorted by: Score = 42% three-year total + 28% coverage + three smaller terms (details)

The working so far

Is an agent needed? Yes sos.state.co.us (checked October 2026) as the source
One-year range $99 to $149 Annual bill
Three-year range $297 to $447 Service fees only, 3 years
Periodic report $25 a year coloradosos.gov (checked October 2026) as the source
Year the lines meet Not within ten years No row ever passes another

Colorado, ranked by value

Ranked by score; every price comes from a company page. State fees stay the same whoever the agent is.

1
Top score

1. Mainstay Filing: best for LLCs operating in more than one state

$149/yr now, $149/yr at renewal
Year-1 price $149
Renewal price $149/yr
Sum of 3 years $447

Mainstay Filing comes out on top. Working: the same $149 a year across all fifty states.

Pay $150 more than CO Registered Agent.org over three years and the recurring paperwork stops being your job.

The price buys

  • A real address in the state
  • Three government mailings per year, scanned for free
  • Works for LLCs, corporations, LPs, LLPs and nonprofits

Adds up

  • Year 1 $149, year 2 $149
  • Goes where the company goes

Does not add up

  • Costs $50 more annually
  • You still handle the reports
2
Single-state plan

2. CO Registered Agent.org: best for the smallest annual agent total

$99/yr now, $99/yr at renewal
Year-1 price $99
Renewal price $99/yr
Sum of 3 years $297

CO Registered Agent.org scores second. Working: $99 yearly, including an in-state street address on file.

The price buys

  • A local registered office
  • Served papers show up online

Adds up

  • $99 a year, flat at renewal
  • Smaller yearly bill than Mainstay Filing

Does not add up

  • Adding a state means adding an agent
  • The periodic report is not covered
3
Single-state plan

3. Colorado Registered Agent.co: best for a nearby alternative

$99/yr now, $99/yr at renewal
Year-1 price $99
Renewal price $99/yr
Sum of 3 years $297

Colorado Registered Agent.co scores third. Working: $99 yearly, including an in-state street address on file.

CO Registered Agent.org publishes the same prices.

The price buys

  • A local registered office
  • Served papers show up online

Adds up

  • $99 a year, flat at renewal
  • Smaller yearly bill than Mainstay Filing

Does not add up

  • Adding a state means adding an agent
  • The periodic report is not covered

Totals after 1, 2, 3 and 5 years

No. Provider Year 1 total Total at year 2 Total at year 3 Total at year 5
1 Mainstay Filing $149 $298 $447 $745 Visit Mainstay Filing Partner link. We may earn money if you buy.
2 CO Registered Agent.org $99 $198 $297 $495 Visit CO Registered Agent.org Partner link. We may earn money if you buy.
3 Colorado Registered Agent.co $99 $198 $297 $495 Visit Colorado Registered Agent.co Partner link. We may earn money if you buy.

Read November 13, 2026. Each column gets one more renewal. No row passes another within ten years.

Worksheet calculator

How many years will you keep the company? Choose and compare.

3 years of fees add to Mainstay Filing $447, CO Registered Agent.org $297, Colorado Registered Agent.co $297. Lowest total at that point: CO Registered Agent.org.

Colorado state fees (official)

Term Value Where it comes from
Filing the articles $50 coloradosos.gov (checked October 2026) as the source
Periodic report $25 every year coloradosos.gov (checked October 2026) as the source
Late fee $50 coloradosos.gov (checked October 2026) as the source
Sum of state fees, years 1 to 3 $100 Calculated from the rows above

Each state row cites its official source. The 3-year total adds the filing, the year-2 and year-3 reports and any minimum tax.

Why row one is row one

Items covered per dollar put Mainstay Filing in row one. That term is 28% of the score; three-year total, year-two change, crossover year and published detail make up the rest.

A single agent price in every state outscored CO Registered Agent.org's lower one-state price.

Colorado registered agent rules, from the source (Colorado Secretary of State)

Every LLC must name a registered agent with an in-state street address.

A person 18 or older whose home or usual place of business is in Colorado (since July 1, 2025 the person has to hold a Colorado driver's license or ID or otherwise verify residency), or a business entity in good standing with a usual place of business in Colorado. The agent has to consent. Statute on point: C.R.S. § 7-90-701.

The address has to be a physical address in Colorado, either a home or a usual place of business. P.O. boxes are not accepted.

As written: sos.state.co.us (checked October 2026) as the source

The state-fees-only case

Acting as your own registered agent adds nothing if you qualify. Every row above bills $99 to $149 a year for the in-state address.

Common questions

What does a registered agent in Colorado cost per year?

$99 to $149 a year in this table.

What do three years of agent service cost?

$297 to $447 in service fees, with state fees on top.

Does Colorado require a registered agent for an LLC?

Yes. Every LLC must name a registered agent with an in-state street address.

Can the owner be the registered agent?

Yes, as long as both rules above are satisfied.

What does the state collect from the LLC each year?

Periodic report at $25 per year, due last day of the entity's anniversary month.

In what year does one service pass another in total cost?

The rows do not cross in the first ten years.

Which registered agent is best value in Colorado?

Mainstay Filing scores first. CO Registered Agent.org and Colorado Registered Agent.co follow.

Keep working

Registered agent worksheets, all 50 states Best registered agents overall The method

Inputs and sources

  1. Colorado Secretary of State comes from sos.state.co.us (August 2026).
  2. Colorado Secretary of State comes from sos.state.co.us (August 2026).
  3. Colorado yearly filing: Periodic report comes from coloradosos.gov (October 2026).
  4. Colorado report due date comes from colorado.public.law (August 2026).
  5. Colo comes from sos.state.co.us (August 2026).
  6. Colorado formation fee: Filing fee comes from coloradosos.gov (October 2026).
  7. Prices from Mainstay Filing, Colorado service page, November 13, 2026
  8. Prices from CO Registered Agent.org, pricing page, November 13, 2026
  9. Prices from Colorado Registered Agent.co, pricing page, November 13, 2026