If you want the verdict on Firstbase, read our full Firstbase review, which covers the pros, cons, and who it fits. This page answers a narrower question: what Firstbase actually costs, product by product, and what your real first-year and second-year totals look like once you add the pieces the $399 headline does not include.
One disambiguation up front: this is firstbase.io, the company formation service. It is unrelated to firstbase.com, a remote-work equipment company with the same name. All prices below were verified on firstbase.io in August 2026, and subscription pricing changes often, so treat the totals as a planning baseline.
Firstbase Start costs $399 one time and includes state filing fees, but not the registered agent, so a realistic day-one cost is about $698.
The recurring products are where the spend lands: Agent at $299 per year, Mailroom from $35 per month, Accounting at $599 per month, and Tax Filing at $1,799 per year.
Firstbase One bundles Agent, Mailroom Premium, Accounting, and Tax Filing for $199 per month billed annually, about $2,388 per year, a steep discount on buying all four separately.
83(b) filing is not an advertised inclusion, which matters for C corp founders with vesting stock.
Two-year totals range from about $997 for the leanest setup to over $5,000 with the full stack.
Firstbase Start: $399 one time
Start is the formation product: an LLC or C corporation in Delaware or Wyoming, expedited EIN setup, the core post-incorporation documents (operating agreement for LLCs, stock purchase agreement and related paperwork for corporations), bank account opening assistance, and access to Firstbase's partner perks.
The most important detail is that state filing fees are included in the $399. Many competitors advertise a low package price and add the state fee at checkout, so Firstbase's sticker price is closer to its real price than most.
Firstbase Agent: $299 per year, per state
Agent Autopilot is Firstbase's registered agent and compliance product: the legally required registered agent in Delaware or Wyoming, annual report filings, BOI filings, and compliance deadline reminders. It is billed per state, so a company registered in multiple states pays $299 for each.
This is the fee that turns the $399 headline into a $698 reality. Every Delaware and Wyoming company must maintain a registered agent, Start does not include one, and $299 per year is on the high end. Standalone agents commonly charge $100 to $150, and Stripe Atlas includes year one and charges $100 per year after.
Firstbase Mailroom: $35 to $50 per month
Mailroom provides a US business address with mail scanning and forwarding, in two tiers: Basic at $35 per month and Premium at $50 per month, with discounts for annual billing (about $315 and $350 per year respectively). For non-US founders with no US address, this is close to essential. For US founders with a usable address, it is optional.
Firstbase Accounting: $599 per month
Accounting is full bookkeeping with transaction reconciliation and chat access to a bookkeeper, at $599 per month, about $5,990 billed annually. That is bookkeeping-firm pricing. Funded companies with real transaction volume may find it reasonable; a pre-revenue startup usually will not.
Firstbase Tax Filing: $1,799 per year
Tax Filing covers the annual corporate return for C corps and multi-member LLCs at $1,799 per year, with a lower $899 price for non-US-owned single-member LLCs. Note that this covers return preparation, not the underlying state obligations themselves, so Delaware franchise tax and similar amounts are still owed on top.
Firstbase One: $199 per month, billed annually
One is the bundle: Agent Autopilot, Mailroom Premium, Accounting, and Tax Filing together for $199 per month billed annually, about $2,388 per year against a listed regular price of $362 per month. Bought separately, those four products total more than $8,400 per year, so the bundle is a genuine discount of roughly 70 percent. The catch is the same as any bundle: it only saves money if you would actually buy Accounting and Tax Filing anyway, and Accounting is the piece early companies most often do not need yet.
What the $399 does not include
Budget for these before treating $399 as your startup cost:
Registered agent. Legally required, not included, $299 per year. Realistic day-one cost: about $698.
A US mailing address. Requires a Mailroom plan from $35 per month if you do not have one.
83(b) election filing. 83(b) filing is not an advertised inclusion. For C corp founders issuing vesting stock, the 83(b) election is a hard 30-day deadline, so confirm directly with Firstbase how it is handled or plan to file it yourself.
Ongoing state costs. Delaware franchise tax and annual report fees are owed regardless of provider.
Bookkeeping and tax prep. Separate subscriptions, priced above.
What Firstbase really costs: year-one and two-year totals
Using annual-billing prices where available:
Lean setup (Start + Agent)
$698
Non-US founder basics (Start + Agent + Mailroom Basic)
$1,013
Taxes handled (Start + Agent + Mailroom Basic + Tax Filing)
$2,812
Full stack (Start + Firstbase One)
$2,787
Lean setup (Start + Agent)
$698
$997
Non-US founder basics (Start + Agent + Mailroom Basic)
$1,013
$1,627
Taxes handled (Start + Agent + Mailroom Basic + Tax Filing)
$2,812
$5,225
Full stack (Start + Firstbase One)
$2,787
$5,175
Two observations from the math. First, the leanest realistic Firstbase setup costs about $997 over two years, not $399. Second, once you want tax filing plus a mailbox, the One bundle costs about the same as picking products a la carte and adds full bookkeeping, which is why Firstbase steers buyers toward it.
How Firstbase pricing compares
Stripe Atlas: $500 one time. Delaware only, includes the EIN, 83(b) election filing, and the first year of registered agent, then $100 per year. Two-year total around $600, versus $997 for the lean Firstbase setup. The full head-to-head is in our Stripe Atlas vs Firstbase comparison.
Clerky: $819 lifetime package. Attorney-drafted formation and lifetime access to post-incorporation paperwork, the startup-lawyer favorite for Delaware C corps.
doola: from $297 per year. Subscription-based LLC formation aimed at non-US founders, with bookkeeping and tax bundles, and the closest competitor to Firstbase's all-in-one model.
The broader field, including budget options like Bizee and brand names like LegalZoom, is covered in our best incorporation services roundup and our guide to Stripe Atlas alternatives.
Who the Firstbase pricing model suits
Firstbase prices formation as a cheap front door and earns its revenue on subscriptions. That model works in your favor if you are a non-US founder who genuinely needs the recurring pieces: a US address, a registered agent, compliance filings, and eventually books and taxes from one vendor. Buy the bundle, and the per-service pricing is competitive.
It works against you if you are a US-based founder forming a Delaware C corp who needs formation, an EIN, an 83(b) filed on time, and a bank account. You would be paying a premium registered agent fee every year for consolidation you are not using, and the one document deadline that matters most to you is not an advertised inclusion.
A note on Rho, since we compete here
Full disclosure: Rho sells a competing product for one slice of this market. For founders starting a Delaware C corporation, Rho Incorporation files an attorney-reviewed Delaware C corp for $400, and the fee is refunded when you open a Rho account and maintain a $10,000 average checking balance for 60 days. The registered agent is included for the first year, your SS-4 (EIN application) is prepared and submitted for you, 83(b) election support is built in, and you get same-day access to Rho business banking, corporate cards, and treasury once approved. Rho Incorporation supports Delaware C corps only today, with LLC support coming soon, so founders forming LLCs or Wyoming entities should compare Firstbase against the alternatives above.
FAQs
Plan on about $698 minimum: the $399 Start formation fee plus the $299 registered agent, which is required but not included. Add Mailroom Basic and the first year runs about $1,013, and the full Firstbase One stack lands around $2,787 including formation.
The $399 one-time fee covers formation in Delaware or Wyoming with state filing fees included, expedited EIN setup, post-incorporation documents like the stock purchase agreement or operating agreement, and bank account opening assistance. The registered agent is not included; Firstbase Agent costs $299 per year, and a US mailing address requires a Mailroom plan from $35 per month.
No. The registered agent is a separate product, Firstbase Agent, at $299 per year per state. Since Delaware and Wyoming both require every company to maintain a registered agent, treat it as a mandatory add-on when budgeting.
Only in the first year, and barely. Firstbase Start plus its required agent costs $698 against Atlas's $500, which includes the agent for year one plus 83(b) election filing. Over two years the lean Firstbase setup costs about $997 versus roughly $600 for Atlas, though Atlas is Delaware-only and offers no mailroom, bookkeeping, or tax products.
Formation itself is a one-time $399 fee, but most of Firstbase's products are subscriptions: Agent at $299 per year, Mailroom from $35 per month, Accounting at $599 per month, and Tax Filing at $1,799 per year. Firstbase One bundles the recurring products for $199 per month billed annually.
Firstbase does not advertise 83(b) election handling as an inclusion, whereas Stripe Atlas files it as part of the $500 package. Founders forming a C corp with vesting stock should confirm how the 83(b) gets filed before choosing a service, since missing the 30-day deadline is a costly and irreversible mistake.
Firstbase One bundles Agent Autopilot, Mailroom Premium, Accounting, and Tax Filing for $199 per month billed annually, about $2,388 per year. Bought separately those four products total more than $8,400 per year, making the bundle a genuine discount of roughly 70 percent if you need all four services.
Expect at minimum $299 per year for the registered agent. If you need a US mailing address, Mailroom adds $35 to $50 per month, Tax Filing adds $1,799 per year for C corps and multi-member LLCs, and Accounting adds $599 per month if you need bookkeeping support.
Firstbase is best suited for non-US founders who genuinely need a US address, registered agent, compliance filings, and eventually bookkeeping and taxes from one vendor. US-based founders forming a Delaware C corp may find better value elsewhere, particularly if 83(b) filing support is a priority.