Tool profile
Firstbase: cost, fit and limits
Firstbase is an online company formation service made by Firstbase.io, Inc. that forms Delaware or Wyoming LLCs and C-Corps for founders worldwide and sells a registered agent, mailroom, accounting and tax filing, with a generative AI business name generator.
What to know first
Firstbase prices its Start package at $99 one time, shown with a $399 figure struck through, for formation in Delaware or Wyoming plus EIN setup. Registered agent service is required for incorporation and state fees apply. Firstbase One bundles accounting, compliance, a virtual address and tax filing at $199 monthly billed yearly at $2,388, and the mailroom starts at $35 monthly.
Firstbase at a glance
| Maker | Firstbase.io, Inc., Not stated on the vendor pages |
|---|---|
| Free plan | No |
| Entry price | $99 one time for the Start package |
| API access | No |
| Category | Best AI Business Formation Services in 2026, rank 5 of 12 |
| Website | firstbase.io/ |
Who Firstbase is best for
International founders
The Mailroom gives a physical US business address with unlimited incoming mail, scans and storage, which a founder abroad needs for state and bank correspondence.
Startups that use Carta or Stripe
The pages name Carta and Stripe among integrations, so a company that already uses them can keep its cap table and payments close to the filing.
Owners who want accounting after filing
Accounting and tax filing are sold under the same roof, so formation can lead straight into accrual bookkeeping and returns for an LLC or C-Corp.
Firstbase plans and pricing
| Plan | Price | What it includes |
|---|---|---|
| Start | $99 one time | Company formation in Delaware or Wyoming, EIN setup and document packages. Registered agent service is required and state fees apply. |
| Firstbase One | $199 monthly, billed yearly at $2,388 | Accounting, compliance, a virtual address and tax filing bundled as the tools needed to run the company from day one. |
| Mailroom Basic | $35 monthly or $315 annually | One physical business address and unlimited incoming mail, scans and digital storage. Billing is monthly or annual, and the annual option is cheaper per month. |
| Mailroom Premium | $50 monthly or $350 annually | A premium business address in New York City, San Francisco or Florida. The price is monthly or annual, with the annual option shown at $350. |
| Agent (Autopilot) | $299 annually per state | Registered agent in all 50 states, foreign qualification, compliance dashboard, annual report and franchise tax filings and beneficial ownership filings. |
Checked November 2026.
What Firstbase does
- Formation in two states
- Start files an LLC or C-Corp in Delaware or Wyoming and handles the paperwork and filings, which suits founders who want a well-known corporate home state.
- Registered agent and compliance
- Agent (Autopilot) covers registered agent service, foreign qualification, annual report and franchise tax filings and beneficial ownership filings for $299 per state per year. The page does not list which states beyond Delaware and Wyoming are covered for formation itself.
- Physical US address
- Mailroom provides a business address with unlimited incoming mail, scans and digital storage, with premium addresses in New York City, San Francisco or Florida. The Premium address is the option for founders who want a recognizable city on their letterhead.
- Accounting and tax filing
- Accounting delivers accrual bookkeeping and tax-ready financials, and Tax Filing covers federal and state returns for LLCs and C-Corps. The page lists accrual bookkeeping and tax-ready financials under Accounting, priced separately from the Start formation package.
- AI name generator
- The Business Name Generator uses generative AI to suggest short brandable business names, and it is the only AI feature named on the pages we read.
How Firstbase handles your data
The pricing page we read does not say whether customer data trains the AI name generator, how long data is retained, where it is hosted or whether any certification applies. Firstbase handles identity details for company formation and mail scanning, so ask for its privacy terms and its practice for scanned mail storage before you route correspondence through it. The vendor's policy was not checked for this on the pages we opened.
Where Firstbase falls short in practice
- Accounting price is inconsistent. Accounting appears at $599 monthly or $5,990 annually and also as $1,890 on the same page without reconciliation, so a buyer must ask which figure applies.
- Start is only the first step. The $99 package requires registered agent service and state fees on top, and the full back-office bundle costs $2,388 per year, so the lowest price does not describe a running company.
- Narrow AI scope. Only a name generator is described as AI, so buyers who expect an AI assistant for compliance questions will not find one named on the pages we read.
Works with
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Firstbase: common questions
How much does Firstbase cost to form a company?
The Start package is $99 one time as of November 2026, shown with $399 struck through. Registered agent service is required for incorporation and state fees apply on top. Firstbase One is a separate $199 monthly bundle billed yearly at $2,388 for accounting, compliance and tax filing.
Which states does Firstbase file in?
Start covers formation in Delaware or Wyoming, per the pricing page. The Agent (Autopilot) product lists registered agent in all 50 states and foreign qualification, so a company formed in one state can register to operate in others at $299 per state per year.
Does Firstbase use AI?
The homepage describes a Business Name Generator that uses generative AI to suggest short brandable names. The pages we read name no other AI feature, so compliance, accounting and tax filing should be assumed to rely on staff and software processes that the vendor has not described as AI.
What does the Firstbase Mailroom include?
Mailroom Basic costs $35 monthly or $315 annually for one physical business address and unlimited incoming mail, scans and digital storage. Mailroom Premium is $50 monthly or $350 annually and adds a premium address in New York City, San Francisco or Florida.
Why does Firstbase list two accounting prices?
The pricing page shows accounting at $599 monthly or $5,990 annually and also at $1,890, without explaining the difference. It may reflect different tiers or entity types, but the page does not say, so ask for a written quote for your own company before you buy.