All 50 states
3 Best Foreign Registration Services (2026): Cost Calculator
Result order: Value ranking, with reach across states deciding result one. The formula
Ranked nationwide
1. Mainstay Filing: best for a company in any state
Ranks firstMainstay Filing ranks first nationwide: a $199 fee to register in any state, with year-one agent service included.
In North Carolina, NC Registered Agent.org calculates $100 lower over three years, but its price ends at the state line.
Inputs covered
- The registration filing, completed for you
- Agent service free for the first year
- One service fee in each state
Adds up well
- $199 across all fifty states
- Then $149 yearly
Adds up badly
- A one-state plan can undercut it
2. NC Registered Agent.org: best for North Carolina businesses
North Carolina resultNC Registered Agent.org holds the second result: $199 plus North Carolina's fee, then $99 a year.
A match for a company whose only home is North Carolina.
Inputs covered
- The North Carolina registration filing, completed for you
- First-year agent service in North Carolina
Adds up well
- Lower cost from year two
- Then $99 yearly
Adds up badly
- Built for North Carolina alone
- No report filing
3. KS Registered Agent.org: best for Kansas businesses
Kansas resultIn third place, KS Registered Agent.org: $199 plus Kansas's fee, then $99 a year.
A match for a company whose only home is Kansas.
Inputs covered
- The Kansas registration filing, completed for you
- First-year agent service in Kansas
Adds up well
- Lower cost from year two
- Then $99 yearly
Adds up badly
- Built for Kansas alone
- No report filing
Totals at 1, 2, 3 and 5 years
| Rank | Service | Result, year 1 | Result, year 2 | Result, year 3 | Result, year 5 | |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | $199 | $348 | $497 | $795 | Open Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | NC Registered Agent.org | $199 | $298 | $397 | $595 | Open NC Registered Agent.orgPartner link. We may earn money if you buy. |
| 3 | KS Registered Agent.org | $199 | $298 | $397 | $595 | Open KS Registered Agent.orgPartner link. We may earn money if you buy. |
How to read the results
Read the three-year result first, then check what each price includes. If a second state is possible, a single provider for all states avoids a switch.
Behind the ranking
Five weighted terms set the order, led by three-year cost and coverage per dollar. On a page meant for every state, the one service that works anywhere ranks first. Results two and three, NC Registered Agent.org and KS Registered Agent.org, cost less when the company is based in North Carolina or Kansas.
Pick your state
Every state has its own calculator with official fees and the services we would use there. Foreign registration cost calculators, all 50 states.
Quick answers
Which foreign registration services come out on top in 2026?
The national order is Mainstay Filing, NC Registered Agent.org and KS Registered Agent.org.
What does a foreign registration service cost?
$199 up to $199 plus state fees.
What do the three-year results come to?
Mainstay Filing $497, NC Registered Agent.org $397 and KS Registered Agent.org $397, before state fees.
Does any single service cover every state?
Only Mainstay Filing; each state service stays within its own state.
Why show one-state services in a national calculation?
With a single state to cover, the local plan costs less. NC Registered Agent.org is the choice for North Carolina businesses, and KS Registered Agent.org for Kansas businesses.
How are the services ranked?
The formula page lists the five terms and their weights.
Input sources
- Mainstay Filing pricing page, entered November 13, 2026
- NC Registered Agent.org pricing page, entered November 13, 2026
- KS Registered Agent.org pricing page, entered November 13, 2026