Mercury vs Relay for Non-Resident LLC Owners

Mercury vs Relay is the single most common banking decision a non-resident Wyoming LLC owner faces after the company is formed and the EIN lands. Both are US fintech platforms aimed at startups and small businesses, both advertise a $0 entry tier, both plug into Stripe, and both push FDIC coverage through partner banks rather than holding your money themselves. That surface similarity hides real differences: Mercury is built as a primary operating bank with treasury yield and a developer API, while Relay is built around Profit First budgeting with a deep sub-account structure. This is a head-to-head comparison, so the goal here is to tell you precisely what each one is, what it actually costs, how realistic approval is from outside the US, and where each fits in a Wyoming LLC + EIN + US bank stack. Facts below were checked against Mercury's and Relay's own documentation, the IRS, and FinCEN in 2026; where the older marketing copy was wrong, it is corrected.

What Mercury and Relay actually are (neither is a bank)

This is the part most comparison posts get lazy about, so be precise.

Mercury is a financial technology company, not a chartered bank. As of 2026 the deposit accounts you open through Mercury are held at its partner banks, Choice Financial Group and Column N.A., both Members FDIC. Mercury historically used Evolve Bank & Trust as well, but announced in March 2025 that it was moving customers off Evolve following Evolve's data-breach and regulatory troubles; new and migrated accounts now sit with Choice and Column (Mercury, "How Mercury works with its partners"; Banking Dive, "Mercury to pivot from partner bank Evolve"). In April 2026 Mercury received conditional approval from the Office of the Comptroller of the Currency to establish Mercury Bank, N.A., which would eventually make it a chartered bank, but until that charter is live your money is held under the partner-bank model.

Relay is also a financial technology company, not a bank. Relay's banking services are provided by Thread Bank, Member FDIC. Relay's own support pages confirm that deposits are FDIC-insured up to $3,000,000 through Thread Bank's deposit-sweep program, which spreads your balance across a network of program banks (Relay, "Thread Bank"; Relay FAQs). Relay also previously used Evolve before moving to Thread.

Why does the distinction between a fintech and a chartered bank matter to you? Because FDIC insurance protects you against the failure of the partner bank holding the money, not against the failure of Mercury or Relay themselves. If the fintech middle layer fails, your access to funds depends on accurate, reconciled ledgers between the fintech and the partner bank ("for-benefit-of" accounts). The 2024 collapse of the Synapse banking-as-a-service platform stranded depositor funds for exactly this reason and is the cautionary tale every founder should know. It is not a reason to avoid Mercury or Relay — both work with well-run partner banks and clean ledgers — but it is the reason you should keep large idle reserves at a platform with real treasury infrastructure (Mercury) rather than letting seven figures sit in a fintech checking balance indefinitely.

Neither Mercury nor Relay is a payment processor. They do not give your customers a checkout button. That role belongs to Stripe, PayPal, or a card acquirer. Mercury and Relay are where Stripe deposits your money by ACH. Keep the layers straight: processor (Stripe) collects from customers, the bank account (Mercury or Relay) holds it, the LLC owns it, and you control the LLC.

Fees: what each one really costs in 2026

Here the older "$0 vs $0" framing is incomplete and worth fixing. Mercury's standard business account genuinely has no monthly fee, no minimum balance, and no fee for USD wires in or out. Relay has a free Starter tier, but it also sells paid plans, and some features people associate with Relay (faster ACH, higher savings yield, more accounts) live on those paid tiers.

Sources for the table: Mercury pricing and Mercury Treasury for the fee and yield figures (Mercury Treasury yields around ~3.6–3.7% depending on the fund and balance and requires a $250k+ balance; rates float with money-market rates); Relay pricing and Relay support for the plan, wire, and APY figures.

The headline corrections versus older copy: Mercury supports up to 20 checking accounts now, not 10; Relay's FDIC ceiling is $3M, not $5M (the $5M figure belongs to Mercury); Relay's outgoing wires are not free ($5 domestic, $10 international); and Mercury charges a 1% conversion fee on non-USD wires even though USD wires are free. Relay does not offer a treasury sweep — its idle-cash answer is a tiered savings APY that only reaches 3.00% on the $90/month Scale plan.

How to read the fee difference

For a typical non-resident founder running a SaaS or services business that collects in USD through Stripe and occasionally sends a USD vendor wire, Mercury is cheaper in practice: free outgoing wires and no plan upsell. Relay's costs show up if you send wires often or want its better savings yield, both of which nudge you toward a paid plan. If your business sends frequent non-USD international wires, neither is ideal — that 1% Mercury conversion fee and Relay's FX markup are both beaten by a dedicated multi-currency provider like Wise Business, which is why many founders run Wise alongside one of these for foreign payouts.

Non-resident approval reality

Both platforms accept non-resident owners, but "accept applications" is not the same as "approve." Here is the honest picture.

Relay states it supports business owners who are citizens and residents of over 200 countries, provided the business has a genuine US operating presence and a US entity with an EIN (Relay FAQs). For non-US citizens, Relay requires a passport as the government-issued ID, and its documentation notes that for non-US applicants a physical passport photo is expected rather than a low-quality scan (Relay, required documents by entity type). Relay also publishes a prohibited-countries list; applicants tied to sanctioned or high-risk jurisdictions are declined regardless of profile quality.

Mercury similarly opens fully remotely for non-residents who have a US LLC and EIN, with a passport and a clear business description. Mercury's underwriting weighs the business description heavily, which is why brand-new LLCs with no operating history can still clear if the description is specific.

A real 2026 change applies to both: registered-agent-only addresses are increasingly not accepted as the LLC's US business address, and some non-resident applicants are now asked for an SSN or ITIN during onboarding. You do not legally need an SSN or ITIN to own a US LLC or to be approved at either platform, and most applicants are not asked — but if you are asked and cannot provide one, the application can stall. This is one reason an ITIN (available from wyomingllc.xyz as a separate $297 add-on) is worth considering if your country profile is in tightened-review territory.

On relative approval odds: stronger country profiles (UK, EU, India, UAE) clear Mercury readily, and Mercury tends to be the higher-throughput approver for non-residents overall. Relay's reviewer pool sometimes approves profiles Mercury declined, and vice versa — they are different underwriting teams, so a rejection at one is not a verdict from the other. Treat any specific percentage you see online (including in older marketing) as a rough internal estimate, not a published figure; neither company discloses non-resident approval rates. The practical takeaway is the sequencing strategy below, not a number.

Who should pick which

Pick Mercury if:

• You want one primary US operating bank with the broadest feature set — treasury yield on idle cash, a real developer API for finance automation, up to ~50 debit cards with per-card spend controls, and native Stripe/QuickBooks/Plaid integrations.
• You hold meaningful idle balances ($25K+) and want T-bill-grade yield via Mercury Treasury with FDIC reach up to $5M across the sweep network.
• You send mostly USD wires and want them free.
• Your country profile is in the stronger tier and you want the most likely single approval.

Pick Relay if:

• Your operating system is Profit First or envelope budgeting and you want up to 20 named checking sub-accounts (50 on Scale) to physically separate operating cash, taxes, payroll, and owner draws under one login.
• You run several Wyoming LLCs and want them consolidated under one Relay login.
• Mercury declined you and you want another chartered-partner-bank option (FDIC via Thread) before falling back to a custodial provider.
• You value the explicit savings-APY tiers and don't need a treasury sweep.

Open both if: you want Relay's sub-account budgeting plus Mercury's treasury yield and API, or simply want redundancy. There is no penalty for holding both — each application uses the same LLC, EIN, and personal documents, and many founders run Relay for day-to-day budgeting and Mercury (or Wise) for reserves and yield.

How this fits the Wyoming LLC + EIN + US bank stack

Mercury and Relay are step three of a four-step stack. They do not work without the layers beneath them, and they trigger US tax obligations above them.

Step by step

1. Form the Wyoming LLC. File Articles of Organization with the Wyoming Secretary of State and maintain a Wyoming registered agent. Wyoming is a popular choice for non-residents because it has no state income tax, low fees, and strong privacy. wyomingllc.xyz handles formation for non-US founders at $397 all-inclusive, with the Wyoming state filing fee already included. Keep the stamped Articles — every bank asks for them.
2. Get the EIN from the IRS. The EIN is your LLC's federal tax ID, obtained on Form SS-4. Non-residents without an SSN or ITIN cannot use the online EIN tool and must file by fax or mail, which typically takes a couple of weeks; the IRS returns a CP-575 confirmation letter (IRS, Apply for an Employer Identification Number). Both Mercury and Relay require the EIN to open the account.
3. Open the bank account (Mercury and/or Relay). Apply remotely with the documents in the next section. Connect Stripe or your processor so customer money flows: processor collects, bank holds.
4. Stay compliant. A US LLC owned by non-residents has filing duties even with zero US tax owed, covered below.

Documents both platforms expect

• Wyoming Articles of Organization (the filed, stamped copy).
• EIN confirmation (CP-575, or the 147C letter if you misplaced the original).
• A valid passport (a physical passport photo for non-US applicants at Relay; both prefer ample validity remaining).
• A specific business description — two or three concrete sentences on what you sell, to whom, how you fulfill, and expected monthly revenue. Vague descriptions are a leading rejection cause.
• A US business address that is more than a registered-agent address (increasingly enforced in 2026).
• A plausible source-of-funds explanation.

The sequencing strategy if one declines

1. If Mercury declines, apply to Relay — a different underwriting team that sometimes clears Mercury's rejections.
2. If Relay also declines, move to Wise Business, which is built around international users and accepts the broadest range of country profiles (though it is custodial, not FDIC-insured to your name, and is best for operating cash rather than large reserves).
3. Apply deliberately, not all at once, so a decline at one platform does not bias the next.

US tax and reporting obligations (do not skip these)

Opening a US bank account does not create US tax by itself, but owning a US LLC as a non-resident creates reporting duties that carry severe penalties when ignored. This is independent of which bank you choose.

• Form 5472 + a pro-forma Form 1120. A US LLC that is foreign-owned and treated as a disregarded entity (the default for a single-member LLC) must file Form 5472 attached to a pro-forma 1120 every year it has a "reportable transaction" with its foreign owner — including capital you contribute and money you draw. The penalty for failing to file is $25,000, and it applies even when the LLC owes no income tax (IRS, About Form 5472). Treat this as the non-negotiable annual filing.
• 1099-K from your processor. Stripe and similar processors issue Form 1099-K only when payments exceed more than $20,000 AND more than 200 transactions in a year. The One Big Beautiful Bill Act, signed July 2025, repealed the planned $600 threshold and reverted to the long-standing $20,000/200 rule, confirmed by the IRS in Fact Sheet 2025-08 (IRS, "IRS issues FAQs on Form 1099-K threshold under the One, Big, Beautiful Bill"). Crucially, not receiving a 1099-K does not make income tax-free — all income is reportable.
• BOI / FinCEN. Beneficial ownership reporting under the Corporate Transparency Act has shifted repeatedly. As of 2026, confirm the current requirement for foreign-owned US entities directly on FinCEN's Beneficial Ownership Information site before assuming you are exempt (FinCEN, Beneficial Ownership Information). Do not rely on a blog's snapshot — this rule has changed more than once.
• Tax treaties. Whether your US-source income is reduced by a treaty depends on your country of residence. Check the official IRS treaty table rather than guessing (IRS, United States Income Tax Treaties — A to Z).

None of this depends on whether you bank with Mercury or Relay — but it is the part that actually gets non-resident founders in trouble, far more than a bank choice ever does.

Common mistakes

• Believing FDIC protects you against Mercury or Relay failing. It protects against the partner bank (Choice, Column, or Thread) failing. The fintech-ledger risk is separate; keep large reserves where there is real treasury infrastructure.
• Assuming both are "$0 forever." Mercury's standard account is free, but Relay's better wire pricing and savings yield live on paid plans ($30 Grow / $90 Scale), and Relay charges $5/$10 on outgoing wires even on Starter.
• Using a registered-agent address as the LLC's business address. Increasingly rejected at both platforms in 2026. Use a genuine business address.
• Treating a Mercury rejection as final. Relay's separate underwriting often clears it; Wise is the broad fallback.
• Skipping Form 5472. The $25,000 penalty applies even with zero revenue and zero tax due. This is the most expensive mistake on this page.
• Expecting the 2025 "$600 1099-K" rule to apply. It was repealed. The threshold is more than $20,000 AND more than 200 transactions — but report all income regardless.
• Letting idle cash sit uninsured above coverage limits. Mercury sweeps up to $5M, Relay up to $3M. Above those, use additional institutions.
• Sending frequent non-USD wires from either. Mercury's 1% conversion fee and Relay's FX markup both lose to a dedicated multi-currency account for international payouts.

Bottom line

Mercury and Relay are both legitimate, well-run fintech banking platforms that open remotely for non-resident Wyoming LLC owners and insure deposits through reputable partner banks. The decision comes down to operating model, not prestige. Choose Mercury when you want a single primary US bank with treasury yield, a developer API, free USD wires, and the broadest feature set — the right default for most SaaS, e-commerce, and services founders. Choose Relay when sub-account budgeting (Profit First, multiple LLCs, separated tax and payroll cash) is central to how you run money, and you are willing to pay for a plan to unlock its better wire and savings pricing. Many founders simply open both. Whichever you pick, the bank is the easy part: get the Wyoming LLC and EIN right underneath it, and stay on top of Form 5472, the $20,000/200 1099-K reality, and FinCEN's current BOI position above it.