Short answer
A corporate card from Brex or Ramp approves on your company's finances rather than your personal credit, which is the part everyone repeats, but both companies also screen the business address, and this is where a lot of applications quietly stall. Ramp is the blunt one: its own help center says the address cannot be a PO box, a virtual office address, a registered agent address, or a mail-forwarding address. Brex declines mailbox services outright and will consider a virtual address only when the owner keeps a verifiable physical presence in the United States. Neither company requires a personal guarantee or a personal credit check, but both require a real US EIN and a US-incorporated company, so an EIN-only application is not a no-EIN application. Confirm how your address is classified before you apply, because the form does not tell you why it failed.
Key takeaways
- Ramp's help center lists the disqualified address types directly: an application address cannot be a PO box, a virtual office address, a registered agent address, or a mail-forwarding address. It has to be a physical US address.
- Brex is stricter in tone but leaves one door open. It does not accept PO boxes, private mailboxes, or other mailbox services, and it accepts a virtual address only when the beneficial owner or control person maintains a verifiable physical presence in the US. The person, not the address, carries the approval.
- EIN-only does not mean no EIN. Both cards skip the personal guarantee and personal credit check, but Brex states that every applicant needs a US EIN and a valid US incorporation, and Ramp requires an EIN that cannot be waived. The relief is on the personal side, not the entity side.
- The cash thresholds are not symmetric. Ramp asks for at least 25,000 dollars in a linked US business bank account. Brex names 50,000 dollars as a minimum balance for funded startups, which is a different condition, so a side-by-side of the two numbers without that context misreads Brex.
- Capital One completed its acquisition of Brex in April 2026. That is a fact, not a forecast. No public source says the deal has changed the underwriting or address rules, so confirm current requirements on Brex's own pages rather than assuming anything shifted.
Before you start
- Find out how your current business address is classified before you apply. A commercial street address and a mailbox service can look identical on an envelope and are treated as opposites on these applications.
- Confirm your EIN and US incorporation are in order. These cards waive the personal guarantee, not the entity requirements, so a company still mid-formation is not yet eligible.
- If you are applying without a US Social Security number, read the fine print for each card separately. Ramp states you can apply without an SSN as long as the EIN is there. Brex is less explicit about a no-SSN path on its own pages.
The Rule Nobody in the Search Results Mentions
Read the top results for a startup corporate card and they agree on the good news. Brex and Ramp underwrite your business, not you, with no personal guarantee and no personal credit check. That part is accurate, and it is why founders reach for these cards first.
What those same pages leave out is the business address. It is not a footnote. Ramp puts it in its help center in one plain sentence: the address on your application has to be a physical address located in the United States, and it cannot be a PO box, a virtual office address, a registered agent address, or a mail-forwarding address. Four address types, named and excluded, on the company's own page.
That sentence quietly disqualifies a large share of the exact founders these cards are marketed to. A non-resident who formed a Delaware LLC and used a mailbox service for the paperwork, a solo founder running everything from a registered agent's address, a remote team with no office at all. The card is built for them in every other respect, and then the address field draws a line.
The failure is silent
An application does not usually tell you the address is why it stalled. It goes into review, comes back declined or stuck, and you are left guessing. That is exactly why the address is worth settling before you apply, not after.
Brex and Ramp Are Not the Same on This
It is tempting to lump the two together, and on the address question that is a mistake. They land in different places.
Ramp is categorical. The excluded list is the excluded list, and a virtual office address is on it by name. There is no stated exception, so for Ramp the practical rule is that the address has to be a real physical location tied to your business.
Brex leaves a narrow opening. It says plainly that it does not accept USPS PO boxes, private mailboxes, or other mailbox services as valid business addresses. But it treats a virtual address as acceptable in one specific case, when the beneficial owner or a control person maintains a verifiable physical presence in the United States. Read that carefully. The thing being verified is not the address. It is whether a real person behind the company is actually here. The address is allowed to be light only when the human presence is not.
| Address type | Ramp | Brex |
|---|---|---|
| PO box | Rejected by name | Not accepted (PO boxes named) |
| Virtual office address | Rejected by name | Conditional, only with a verifiable US physical presence of the owner |
| Private mailbox or mail-forwarding | Rejected by name | Not accepted (mailbox services named) |
| Registered agent address | Rejected by name | Not stated as a category, but a mailbox-style address does not qualify |
How each card treats a virtual or mailbox address, from each company's own support pages, retrieved July 2026.
The takeaway is not that one card is better. It is that a blanket claim like these cards accept virtual addresses is wrong for Ramp and only half right for Brex, and the half that is right hinges on a condition most guides never mention.
EIN-Only Does Not Mean No EIN
A phrase travels around these cards that causes real confusion. People call them EIN-only cards, and somewhere along the way EIN-only gets flattened into no EIN needed. Those are opposite claims.
Here is what the companies actually say. Brex states that all applicants are required to have a US EIN issued by the IRS, a valid US incorporation, and US operations, and that only companies organized and registered in the United States can apply. Ramp requires an EIN that, in its words, cannot be waived. So the EIN is not optional on either card. It is mandatory.
What EIN-only is really pointing at is the personal side. Neither card asks for a personal guarantee, and neither runs a personal credit check to approve the account. That is the relief these cards offer, and it is a real one, especially for a founder with no US credit history. But it lives on the personal-liability axis, not the entity axis. The company still has to exist, be US-registered, and have an EIN. If you are still mid-formation, you are not yet eligible, and that has nothing to do with your credit.
Why the distinction matters for the address
Because the EIN and the US incorporation are required, the address you use is tied to a real registered entity. That is also why a mailbox or registered-agent address raises a flag: the underwriting wants the entity's real operating footprint, and a forwarding address supplies none of it.
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The Cash Thresholds, and Why the Two Numbers Do Not Line Up
Both cards look at how much cash your business holds, and the numbers get quoted side by side as if they measure the same thing. They do not.
Ramp's condition is clean. Its help center says you need at least 25,000 dollars in cash in any US business bank account linked to your application, verified through the account connection. One number, one condition.
Brex's 50,000 dollar figure comes with a clause. Brex names 50,000 dollars as a minimum cash balance for companies that have raised funding. That is not the same as a flat comparison of 25,000 against 50,000, because the Brex number is scoped to funded startups, and its mid-market and enterprise tiers are assessed on revenue instead, in the range of hundreds of thousands of dollars a month. Lining the two figures up without that context makes Brex look simply pricier when it is really answering a different question.
None of this is the address, but it connects to it. The cash sits in a US business bank account, and opening that account had its own address requirements. If the address that got your bank account approved was a real commercial one, you are already most of the way to satisfying the card. Our walkthrough of that first step is in the guide to business bank account address requirements.
The Capital One Acquisition, Kept in Its Lane
One piece of recent news belongs here precisely because it is easy to over-read. Capital One completed its acquisition of Brex in April 2026, in a deal valued at roughly 5.15 billion dollars. That is confirmed and public.
What is not established is any effect on how Brex underwrites cards or handles addresses. No public source ties the acquisition to a change in eligibility, thresholds, or the address rules described above. So the honest statement is narrow. The ownership changed, the requirements on Brex's pages are what they are today, and because policies can move after a deal like this, the safe move is to confirm the current rules on Brex's own site at the moment you apply rather than trusting any secondhand summary, including this one.
Applying Without a US Social Security Number
For a founder outside the US, the SSN question decides a lot, and the two cards do not answer it the same way.
Ramp is the clearer one. It states you can apply as a business owner or officer without an SSN, as long as the application includes an EIN, which cannot be waived. So on Ramp the path exists and is documented: EIN required, SSN not.
Brex is less definite on its own pages. Its application material says it may ask for your Social Security number during the process, and it does not spell out a clear no-SSN route on its official documentation. Third parties describe a passport-based path, but Brex itself does not confirm one in writing, so treat that as reported rather than established. If a no-SSN application is essential to you, Ramp is the one with a documented answer, and Brex is worth confirming directly before you rely on it.
This is the same terrain as bank and processor onboarding, where a rejection often traces back to a mismatch between your documents and your address rather than to the SSN itself. We cover that failure pattern in the piece on KYC rejections and how to recover.
So What Address Should You Use
Put the pieces together and the requirement is consistent across both cards, even where the wording differs. They want a real, physical US business address, not a box and not a forwarding service, tied to a US-registered entity with an EIN. Brex will bend on the address only when a real person's US presence carries the weight instead.
The trap is that you often cannot tell how your own address is classified just by looking at it. A commercial building and a mailbox storefront can sit on the same street and print the same-looking line on a letter. The card issuer can tell them apart. You should be able to as well, before you apply. The free address checker shows how an address is classified in USPS records, so you can see whether the one you are about to submit reads as a commercial street address or as a mailbox-style location.
A word of honesty about our own service, because it is the whole point of this article. save office provides real commercial addresses in six US cities, which is a genuinely different thing from a mailbox rental. But no address provider can promise that a given card will approve you, and a card issuer may still classify any third-party address, including a good commercial one, under its own rules. Use the address checker to understand what you have, keep your EIN and incorporation in order, and confirm the current requirements with Brex or Ramp directly. The address is one gate of several, and the point of this piece is to keep it from being the one that surprises you.
Not legal or financial advice
This article is general information, not legal or financial advice. Card requirements change, especially after an ownership change. Verify against brex.com and ramp.com, and confirm your own eligibility with each issuer.
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Published July 15, 2026
I'm Henry, a hedgehog in a bow tie who explains the dull, scary parts of building and running a U.S. business.



