Mercury vs Relay vs Wise for a Non-Resident LLC

Short answer: Mercury is the default primary account for a non-resident LLC: the cleanest product, free wires, and the smoothest fit with Stripe. Relay is the serious alternative and the better choice if you want many sub-accounts or Mercury declines you. Wise Business is a multi-currency complement, not a US bank account, and using it as your only rail is a structural risk rather than a cost saving.

This is the spoke of the US business banking guide, which covers the tiers and what compliance reviews before any of them says yes.

The one distinction that matters first

Two of these are US fintechs that place your deposits with partner banks. One is an electronic money institution.

Mercury and Relay give you a US account and routing number, with deposits held at partner banks that carry FDIC insurance. Wise gives you US account details for receiving dollars, but the money sits in safeguarded accounts, not bank deposits. In normal operation you will not feel the difference. On the day a payment processor asks for a bank statement, or an account gets frozen for review, you will.

That is why the recommendation is not “pick one” but “pick a primary and a backup, and know which of them is actually a bank”.

Side by side

Mercury

Mercury is where most non-resident LLCs should start. The product is built for startups, the interface is genuinely better than the alternatives, domestic wires and ACH are free, and connecting Stripe or a similar processor is uneventful, which matters more than it sounds, because “uneventful” is what you want from the account that receives your revenue.

The trade-off is that Mercury has become more selective about non-resident applications over time, and it does decline files it considers thin: a brand new EIN, a flagged virtual address, a vague activity description. Those declines are about the file, not about you, and they are usually fixable: see what to do after a rejection.

Relay

Relay is the answer to two situations. The first is a Mercury decline: it is a different institution with a different risk model, and a file that fails one can pass the other. The second is operational: Relay allows up to twenty sub-accounts, which makes it the natural fit if you run profit-first style envelope allocations, hold client funds separately, or manage several brands under one LLC.

The interface is plainer and free wires sit behind the paid tier. Neither is a reason to avoid it.

Wise Business

Wise earns its place for one job: moving money between currencies at close to the mid-market rate. If you invoice in dollars, pay contractors in euros and live somewhere that pays in a third currency, Wise will cost you less than any bank in this list.

What it should not be is your only account. Payment processors and platforms increasingly distinguish between a bank account and an EMI, some US clients’ accounts payable systems balk at it, and if Wise reviews your account you have no other rail. Treat it as the currency layer on top of a real primary account.

The setup we actually recommend

For a typical non-resident LLC invoicing US and European clients:

1. Mercury as the primary account. Revenue in, Stripe connected, cards issued.
2. Relay as the backup, opened while things are calm rather than during an incident. An account you never use costs nothing; an account you cannot open when your primary is frozen costs everything.
3. Wise for the currency conversion layer, if your money genuinely crosses currencies.

Traditional banking (Chase, Bank of America) comes later, if at all, and usually involves a trip. It is worth it for some businesses and pointless for most; the banking guide covers when it is which.

The questions that actually pick one

Feature tables are how these comparisons are usually written and they are not how the decision gets made. Five questions decide it.

How do you receive money? US clients paying by ACH and domestic wire is the ordinary case and all three handle it. Card payments through Stripe, marketplace payouts, or international wires in several currencies each push toward a different answer. Match the account to your actual rails rather than to a feature list.

How many currencies do you genuinely hold? Not how many you touch: how many you keep balances in. A business that earns dollars and spends dollars has a different requirement from one earning dollars and paying a team in three other currencies. Multi-currency capability is worth a lot to the second and nothing to the first.

Do you need sub-accounts? Businesses that separate money by purpose (tax set aside, owner’s draw, operating float) benefit substantially from an account structure that supports it natively. Businesses that keep one balance do not.

Who else needs access? A bookkeeper, an accountant, a partner, a virtual assistant paying suppliers. Permission granularity matters more than it sounds once someone other than you is in the account.

What is your volume, and how spiky is it? Steady monthly retainers behave differently from launch-driven revenue. Platforms respond differently to a sudden multiple of your normal volume, and a business with spikes should choose partly on how the provider handles being surprised.

Answer those honestly and the choice usually narrows to one or two, which is a better way to decide than comparing fee schedules that all look similar until you are using them.

The costs that are not in the pricing page

Where the real money goes, and it is rarely the monthly fee.

Currency conversion spread. If you receive dollars and spend another currency, the spread on conversion is almost certainly your largest banking cost, by a wide margin. It is quoted as a rate rather than a fee, which makes it easy to overlook and expensive to ignore. Compare this before anything else if you convert regularly.

Incoming and outgoing wire fees. International wires carry charges at both ends plus correspondent bank deductions in the middle. A business receiving many international transfers pays a lot here.

Held balances and what they earn. Money sitting idle is a cost if it earns nothing while inflation runs. For a business holding a meaningful float, this is a real number.

The time cost of bad software. Underrated. An interface that makes reconciliation painful, or that your bookkeeper cannot work with, costs hours every month that have a price.

The cost of a hold. Not a fee, and the largest potential cost of all. An account frozen during your highest-volume week is worth more than every fee on this page combined, which is the argument for redundancy below.

What they are underwriting, and why applications fail

All three are regulated businesses making a risk decision, and understanding what they are looking at is worth more than comparing feature lists.

Your country of residence. The largest single input, and the one you cannot change for the application. Some countries sit on restricted lists and no amount of file preparation overcomes that (the lists of all four providers, crossed by country, are in which countries Mercury, Relay, Wise and Stripe accept). Others simply attract more questions.

Your business activity, described precisely. “Consulting” tells a reviewer nothing. “Monthly retainer software development for three US-based SaaS companies, invoiced in USD, roughly $8,000 a month” lets them picture the money. The second version is approved considerably more often than the first, with identical underlying facts.

Your address, and whether it looks real. A registered agent address presented as an operating address is the most common single cause of decline. So is a virtual mailbox that the reviewer’s systems recognise as one.

Whether the business visibly exists. A website, contracts, invoices, some history. An entity formed last week with no evidence of activity is legitimate and much harder to underwrite.

Whether your documents agree with each other. The operating agreement, the state filing, the EIN letter and the application should tell one consistent story. Inconsistency is what a reviewer is trained to notice.

What is almost never the reason: being foreign. All three of these platforms serve non-resident-owned entities as a matter of course. The longer version of how to read a rejection is here.

Account closures, and why redundancy is not paranoia

The risk that gets least attention and matters most.

Fintech accounts can be reviewed and closed with limited recourse and limited explanation. It is not common, and it is not rare enough to design around ignoring. The triggers are usually a change in your pattern rather than anything wrong: a sudden volume increase, payments to or from a jurisdiction that raises a flag, a business activity that drifts from what you declared at onboarding, or a periodic re-verification you fail because your documentation has aged.

Three consequences worth building for.

A frozen account is a business-stopping event. If every dollar you have passes through one institution, a review during a launch or a payroll week is a genuine crisis rather than an inconvenience.

A second account is cheap insurance. Not to move money around dishonestly, but because redundancy is the only real protection. Open it while the first account is healthy. Applying under pressure, after a closure, is the hardest possible starting position.

Tell them before you change. A large incoming payment, an unusual counterparty, a genuine pivot in the business. An email in advance costs nothing and prevents most reviews from becoming holds.

The related discipline: keep your declared activity current. A business that told the platform it was a design studio two years ago and is now selling physical products has a mismatch waiting to be found.

Where the traditional tier still wins

Fintechs cover most needs for most non-resident owners, and there are things they generally do not do.

Cash and cheques. Not available. If your business touches either, you need a traditional bank.

Credit relationships. Deposit history with a large bank is one of the more realistic paths into US credit as a non-resident. Fintech balances do not build that in the same way.

Counterparty comfort. Some conservative clients, landlords and suppliers respond differently to a household-name bank.

Branch access and human escalation. When something goes wrong, a named banker is worth a great deal, and support chat is not the same thing.

The trade is that traditional accounts generally require you to be physically present in a branch with a complete file, which for most people means a trip. What that actually involves is here.

The pattern that works for most of our clients: a fintech first, because it opens remotely and the business can start operating, then a traditional account added later once there is transaction history to show and a reason to make the trip.

Before any of this

None of these institutions will approve an application that does not hold together, and none of them can be promised to you in advance: the decision is theirs, every time. What decides the outcome is the file: a real address, an activity description that shows where the money comes from, documents that agree with each other, and applying to the right tier in the right order.

If you want a read on which tier is realistic for your country of residence and your activity, the assessment gives you that in eleven questions, including when the answer is that you should not be forming a US LLC at all.