Mercury vs Relay vs Wise: Best Bank for a Canadian LLC

Three fintechs cover almost all U.S. business banking for Canadian-owned LLCs in 2026: Mercury, Relay, and Wise Business. Each is strong at a different thing. Mercury suits SaaS and higher-volume founders, Relay fits operators who want sub-accounts for cash flow, and Wise works best for multi-currency invoicing.

Here's how to pick the one that matches your business.

Why fintechs and not Chase or Bank of America

Traditional U.S. banks usually require an in-person visit and, in many cases, a U.S. Social Security Number for the account signer. Canadian founders who try Chase or Bank of America remotely almost always hit one of those walls.

Mercury, Relay, and Wise Business got around both problems. They accept the Canadian passport and a Canadian address as the signer ID, and they review the application online within a few business days.

Mercury: best for tech-focused operators

Mercury is the default choice for Canadian founders running SaaS, agencies, and anything with venture or Stripe income. Clean dashboard, strong API, and native support for virtual cards, plus checking and savings inside the same account. No monthly fees.

Mercury works well when:

You bill U.S. clients in USD and rarely need other currencies
You want one account with solid treasury features for idle cash
You're building something that investors will recognize

Mercury has become stricter on businesses that look like pure payment processing, cross-border money movement for others, or crypto-adjacent services. If that's you, expect friction.

Relay: best for sub-accounts and cash flow systems

Relay is less known but great if you run your business on a Profit First or envelope-style cash flow system. You can create up to 20 free checking accounts under one business, each with its own account and routing number.

Relay works well when:

You want to split revenue into buckets, taxes, owner pay, operating
You invoice a handful of U.S. clients and prefer clear separation
You dislike Mercury's startup-leaning feel

Relay also supports bill pay and ACH sending at no extra cost. Less flashy than Mercury, but stable for operators.

Wise Business: best for multi-currency invoicing

Wise Business is not really a bank. It's a money services company with multi-currency accounts. For a Canadian-owned LLC, it's useful when you invoice clients in USD, EUR, GBP, CAD, and a dozen others, and you want to hold each currency rather than convert.

Wise works well when:

You invoice across multiple currencies
You want the cheapest FX conversion available
You personally hold a Wise account and want to move money between your LLC and yourself at near-interbank rates

Wise does not replace Mercury or Relay for U.S.-centric operations. Some U.S. merchants and payroll providers do not accept Wise routing numbers cleanly. Many Canadian founders use Wise alongside Mercury, not instead of it.

Side by side at a glance

Feature	Mercury	Relay	Wise Business
Monthly fee	$0	$0	$0 (Pro tiers from $19)
Sub-accounts	Limited	Up to 20	Per currency
Multi-currency	USD only	USD only	40+ currencies
API	Strong	Basic	Strong
Best for	SaaS, startups	Operators, agencies	Cross-border invoicing
Canadian residents	Yes	Yes	Yes

Common rejection reasons

Canadians get denied more often for the items below than for the bank choice itself:

A virtual P.O. box used as the business address. Use a real commercial street address.
An EIN with inconsistent business name or responsible party data.
Missing formation documents, or blurry scans.
Business description that reads as "consulting" with no specifics. Banks want to see what you actually do.

If Mercury declines you, it's usually for one of these reasons rather than your nationality.

Our default recommendation for Canadian LLCs

Solo SaaS or agency with U.S. clients: Mercury
Operator who wants cash flow buckets: Relay
Multi-currency freelancer or consultant: Wise Business, then add Mercury later when U.S. volume grows

Pick one to start. You can always open a second account down the road.