📋 Table of Contents
1. The Setup: Atlas + Banking
Stripe Atlas is a formation service: it incorporates your company in Delaware, pulls the EIN from the IRS, issues founder equity, and files the 83(b) election [Link]. It supports three entity shapes — a Delaware C corporation, a Delaware LLC, and a C-corp subsidiary of an existing parent [Link]. The formation itself costs USD 500 (incorporation plus your first year of registered-agent service), then USD 100/year to maintain the agent.
Incorporation is only half the job. Before the company can receive Stripe payouts, pay vendors, or buy anything, it needs a business bank account — a legal-entity account that the agent or founder can actually move money through. That's where the business bank accounts page [Link] comes in: immediately after incorporation (or upon receiving your EIN), Atlas founders can apply to open a financial account with Stripe or its partners. The partners determine eligibility and don't support every Atlas business — you can also just go apply to any bank you like.
ℹ️ The two clocks that matter
Every banking option on this page is defined by two properties: when you can open it (before the EIN lands, or only after) and what it demands of the founder (a US address, an SSN, a specific entity type). The whole comparison in this report is really about those two axes. That's why "which bank should I use" is not a one-answer question — it's a match between your entity structure, your location, and your timeline.
2. The Five Banking Options
Atlas surfaces five financial-account paths. Here is what each actually is, in the order the documentation presents them.
Stripe Treasury
The one that lives inside Stripe. A financial account is the core object: it receives your settled Stripe earnings, holds funds, and powers capabilities like physical and virtual cards, multi-currency management and conversion, and international outbound payments via Global Payouts [Link]. Two facts make it stand out in this comparison. First, it is available immediately after incorporation, before you receive your EIN — you can be storing and moving money the moment the entity exists. Second, there are no monthly fees or minimum-balance requirements to open or maintain a financial account. Eligible accounts can hold fiat balances (USD, EUR, GBP) and, in preview, a USDC stablecoin balance. In the US, USD held in financial accounts can be eligible for FDIC pass-through deposit insurance (up to USD 250,000 per depositor, per institution, held at Fifth Third Bank, N.A.) — with some account types explicitly excluded [Link].
Mercury
A startup-focused neobank. Also available immediately after incorporation, before your EIN. The Atlas integration pre-fills your application with your personal info, company info, and the incorporation paperwork from your Atlas file. It requires two addresses — a legal address (your registered-agent address works) and a physical address (a US or non-US residential address) — both of which Atlas can pre-fill [Link]. The non-US physical-address option is the meaningful differentiator for a non-resident founder.
Brex
The most gated option. Available to C-corps only (so an LLC holdCo is out of the door immediately). Available before your EIN, but it requires at least one beneficial owner to submit a US physical address [Link]. For a solo founder, that one requirement is usually disqualifying unless the founder physically lives in the US.
Rho
A digital bank for businesses. Available before your EIN, and like Brex it requires at least one beneficial owner to submit a US physical address [Link]. No entity-type restriction is stated, so an LLC is fine — but the US-address requirement is the same gate as Brex.
Novo
The most US-citizen-specific option. Unlike the others it is only available after you receive your EIN, and it requires at least one beneficial owner to submit a US Social Security Number and a US physical address [Link]. That double requirement (SSN + US address) means a non-US founder is effectively locked out regardless of entity type.
⚠️ Fintech, not a bank
Stripe, Brex, Mercury, Rho, and Novo are all fintech companies, not FDIC-insured banks. Actual banking services are provided through their bank partners. This is why the documentation carves out a specific FDIC pass-through provision for Stripe Treasury rather than calling it insured by default — worth understanding before you park meaningful balances anywhere in this stack [Link].
3. Visual Comparison Table
The five options collapse into two axes: when you can open the account and what it requires of the founder. Here is the full picture in one view.
| Option | Available | Entity type | US physical address | US SSN | Monthly fee / min balance | Best for |
|---|---|---|---|---|---|---|
| Stripe Treasury | Pre-EIN | C-corp / LLC | Varies | Varies | $0 / $0 | Default holdCo treasury; sits inside Stripe |
| Mercury | Pre-EIN | C-corp / LLC | US or non-US OK | Not required | Plan-based | Non-resident startup founder |
| Brex | Pre-EIN | C-corp only | Required | Not required | Plan-based | US C-corp with spend/card focus |
| Rho | Pre-EIN | C-corp / LLC | Required | Not required | Plan-based | US-based founder, digital bank |
| Novo | Post-EIN only | C-corp / LLC | Required | Required | Plan-based | US-citizen, US-based founder |
Reading the table left to right: Stripe Treasury and Mercury are the two that clear every gate without a US-citizen-specific requirement, and both work before the EIN. Brex is the only entity-restricted option (C-corp). Rho and Novo both demand a US physical address, and Novo additionally demands an SSN and waits for the EIN. Stripe Treasury is the only one with an explicit $0 / $0 posture, because it is not a separate bank to subscribe to at all — it is a capability of the Stripe account you already have.
💡 How to read "varies"
The "varies" cells on Stripe Treasury are deliberate. Treasury eligibility is determined per business by Stripe (and its bank partners), not by a single founder-residency rule the way the partner banks state theirs. In practice a US-incorporated entity can open a financial account in the US (where it is in public preview) and, where eligible, hold multi-currency and USDC balances — but confirm your specific entity's eligibility in the Atlas Dashboard rather than assuming [Link].
4. Entity Structure: Why It Changes Everything
Before choosing a bank, the founder's entity choice quietly determines which banks are even in play. Atlas offers three shapes, and they have real consequences [Link]:
- C corporation — grants equity to employees, advisors, and investors; preferred by institutional investors who can't invest in LLCs; can typically use early startup losses to offset future taxes.
- LLC — often self-funded, pass-through by default, simple taxes for a single US founder; but multi-founder or non-US-founder pass-throughs "can become complex."
- C-corp subsidiary — a new C-corp issued wholly to an existing parent. This is the structural primitive for the multi-business case: you form a parent, then form subsidiaries under it.
Two structural facts matter for this report. First, Brex immediately drops any LLC — so if the holdCo or any business is an LLC, Brex is out before you even look at addresses. Second, the C-corp subsidiary option is what makes the "one parent, many businesses" architecture buildable on Atlas in the first place, and it's the shape the recommendation below leans on.
ℹ️ A timing footnote that saves money
Atlas flags a real, non-obvious cost: if you incorporate before December 31, the entity is subject to a full year of Delaware annual tax — it is not prorated. Waiting until January 1 can save a full year of Delaware tax. For a multi-business founder forming several entities in a batch, this timing lever compounds across every entity [Link].
5. Recommendation: One Founder, Multiple Businesses
This is the specific case the report was built for: a single founder who runs several distinct businesses (say a SaaS product, a content/agency operation, and a side e-commerce venture) and wants a clean way to hold and bank them all. The recommendation has two layers — the entity architecture and the banking layer — and they have to be chosen together.
The architecture
Form a single Delaware C-corp holding company as the parent, then form each business as a C-corp subsidiary (the third Atlas option). This keeps one root of legal and financial identity for the founder, centralizes equity and eventual investor/exit mechanics in one place, and lets money and risk be allocated between operating businesses from the top.
⚠️ This is a structural decision, not a banking one
A C-corp holdCo is not automatically the right structure for everyone — it trades pass-through tax simplicity for liability separation, centralized control, and a clean path to institutional investors or a future sale. For a single US founder with genuinely unrelated, low-risk businesses, a pass-through LLC structure is often simpler and cheaper to run. Talk to a tax and legal professional before locking the holdCo shape; Stripe's own docs say Atlas "doesn't provide legal, tax, or accounting advice" [Link]. Everything below assumes you've already made the holdCo call and now just need to bank it.
The banking recommendation
For that architecture, the cleanest banking layer is a two-tier setup:
🎯 The recommendation, in one line
Stripe Treasury at the holdCo as the central treasury and money-movement hub, with Mercury as the fallback/operational bank where a subsidiary needs a dedicated operating account — and only Rho/Brex/Novo if the founder's US residency makes them a better operational fit.
- Central treasury: Stripe Treasury on the holdCo. It opens pre-EIN, has no monthly fee or minimum balance, receives settled Stripe earnings directly, and gives you cards, multi-currency, and international payouts from the account you're already on. For a multi-business founder, this is the natural "pool" that every subsidiary revenue flows into and every cross-business expense flows out of. It is the only option that doesn't require a separate bank relationship or subscription at all.
- Operational accounts: Mercury where a business needs its own operating bank. Mercury is the only partner option with no US-citizen/US-address hard gate (a non-US physical address is fine), so it's the natural choice for any subsidiary that needs a standing operating account separate from the treasury — and it's the most forgiving option for a non-resident founder, which is the most common situation for an international multi-business founder.
- Brex / Rho / Novo: situational. Pick Brex only if the business is a C-corp, the founder has a US physical address, and you want its card/spend tooling. Rho is the US-resident digital-bank alternative. Novo is the US-citizen, US-based, post-EIN option. None of these is the central layer; they're operating-bank choices for specific subsidiaries.
💡 Why this beats "one bank for everything"
Multi-business founders usually over-engineer this by opening five bank accounts, one per business. The Treasury-at-the-top pattern inverts that: one central treasury does the heavy money movement, and each operating business only gets a dedicated account when it genuinely needs one (its own vendor relationships, its own card controls, or a partner that requires a specific bank). Fewer accounts, less reconciliation, and a single place to see the whole portfolio's cash position.
6. Decision Checklist
Run through these in order. Each one narrows the field.
- Entity first. Is the structure a C-corp holdCo, an LLC, or a mix? (This eliminates Brex for any LLC and sets whether the "subsidiary" pattern is available.)
- Founder residency. Is the founder US-based with a US physical address? If yes, all five are reachable in principle. If no, only Mercury (non-US physical OK) and Stripe Treasury (per-eligibility) reliably survive.
- SSN. Does the founder have a US Social Security Number? If no, Novo is out immediately.
- Timeline. Do you need money moving before the EIN lands? If yes, only Treasury, Mercury, Brex, and Rho qualify; Novo is post-EIN only.
- Central vs. operating. Do you want one central treasury (Stripe Treasury) or per-business operating accounts (Mercury/Brex/Rho/Novo)? For a holdCo, both: treasury on top, operating accounts where needed.
- Cost posture. Do you want zero monthly fees and no minimums? That's Stripe Treasury by itself; every partner bank is plan-based.
- Verify eligibility. Confirm the specific entity's eligibility in the Atlas Dashboard / Perks page before assuming — partners determine account eligibility and don't support every Atlas business [Link].
7. Caveats & Fine Print
- Partners decide eligibility. "Stripe or our partners" means each partner runs its own underwriting and "might not support all Atlas businesses." Treat every "available" in the table as "reachable, subject to that partner's own approval" — confirm in the Atlas Dashboard / Perks page [Link].
- Atlas is not a law or tax firm. It forms entities, pulls the EIN, and files the 83(b); it does not advise on whether a holdCo, an LLC, or a subsidiary structure is right for you, and it can't guarantee Stripe payments approval. The structural half of this recommendation is a professional-advice question [Link].
- Treasury is in preview. Stripe Treasury is in public preview in the US and UK and private preview in Australia; the stablecoin balance is public preview in the US and private preview elsewhere. Preview features can change, so build the treasury layer with that in mind [Link].
- FDIC pass-through is specific. Only qualifying USD balances in certain financial-account types get pass-through insurance (up to USD 250,000, held at Fifth Third Bank, N.A.); several account types are explicitly excluded. Don't assume a Treasury balance is insured without checking the type [Link].
- Atlas has a formation cost. USD 500 to form (plus state fees and first-year registered agent), then USD 100/year — refundable if Stripe can't support the business. Factor that into a batch of several entities [Link].
- Delaware annual tax is not prorated. Incorporating before December 31 incurs a full year of Delaware annual tax. Timing the formation batch after January 1 saves a year per entity [Link].
References
- Business bank accounts — Stripe Atlas Documentation (Stripe Treasury, Mercury, Brex, Rho, Novo; pre/post-EIN timing and requirements)
- Treasury — Stripe Documentation (financial accounts, multi-currency, cards, stablecoin balances, FDIC pass-through, availability)
- Company types — Stripe Atlas Documentation (C corp, LLC, C-corp subsidiary; tax implications)
- How to incorporate your company — Stripe Atlas Documentation (what Atlas does, USD 500 cost, when to talk to a lawyer)
- Atlas Perks page — current list of banking partners and which support pre-EIN signup
- Mercury onboarding requirements — Mercury help
- Brex account requirements — Brex support
- Rho FAQ — Rho onboarding requirements
- Novo FAQs — Novo onboarding requirements