Relay Sub-Accounts for Non-Resident LLC: Profit First Workflow + Thread Bank FBO

If your non-resident Limited Liability Company (LLC) is running on a single Relay checking balance and you keep losing track of which dollars belong to taxes, owner pay, or next quarter's hosting bill, you are leaving Relay's best feature unused. Relay supports up to 20 sub-accounts under one Employer Identification Number (EIN), and the Profit First method by Mike Michalowicz fits that structure almost too well. The trap is assuming Relay is a bank. It is not. Your deposits sit at Thread Bank under a For Benefit Of (FBO) structure, and that changes your Federal Deposit Insurance Corporation (FDIC) math, your Form 5472 reporting, and how you should split funds when Canadian dollars (CAD) are coming in through Wise.

The 30-second answer

• A Canadian-owned LLC can run a five-bucket Profit First workflow on Relay using sub-accounts named Income, Profit, Owner Pay, Tax, and Operating Expenses, each with its own account and routing number.
• Relay is not a bank. Deposits are held at Thread Bank, FDIC Certificate Number 9499, in Rogersville, Tennessee, through a pass-through FBO structure. FDIC coverage applies per beneficial owner, not per sub-account.
• Most Canadian operators run Relay alongside Mercury, not instead of it. Mercury handles primary operating cash and Stripe payouts. Relay holds the Profit First allocation system. Forcing a migration usually costs more than it saves.

What Relay actually is, and what Thread Bank does

Relay markets itself as a business banking platform, but the legal structure matters. Relay Financial is a financial technology company. The actual deposit account lives at Thread Bank, a Tennessee-chartered bank with FDIC Certificate Number 9499 headquartered in Rogersville. Relay holds funds at Thread Bank in a For Benefit Of structure, which means Thread Bank's books show a pooled account titled something like "Relay Financial FBO Customers," and Relay's records map your specific dollars to your EIN inside that pool.

This matters for three reasons.

First, FDIC pass-through insurance applies per beneficial owner, per insured bank, per ownership category. Your LLC is one beneficial owner. Splitting one million dollars across 20 Relay sub-accounts does not create twenty $250,000 buckets of insurance. It creates one $250,000 ceiling at Thread Bank for the LLC's combined Relay balance, plus whatever extended coverage Relay arranges through additional partner banks for higher balances. Verify the current partner-bank list on Relay's deposit agreement before you assume coverage above $250,000.

Second, the FBO structure is invisible at the wire and Automated Clearing House (ACH) layer. Each sub-account gets its own account and routing number, and outside parties such as Stripe, Wise, or a vendor see those numbers as if they were normal bank accounts. The sub-account is real for operational purposes, even though legally it is a sub-ledger inside Thread Bank's pooled FBO account.

Third, if Thread Bank failed, the FDIC payout process for FBO depositors is slower than for a normal depositor. The bank's books have to be reconciled with Relay's records to identify each beneficial owner. This is rarely a meaningful risk at FDIC-insured banks, but it is the reason large idle balances should not all live at Relay.

Why Profit First fits sub-accounts so well

The Profit First method, written by Mike Michalowicz, is built on a simple idea. If you put all your revenue in one operating account, you spend what you see, and profit becomes whatever is left at year-end, which is usually nothing. The system reverses the order. Revenue lands in an Income account, and on the first and fifteenth of each month, you allocate it across four other accounts before you can spend it on operations.

Five foundational accounts (Michalowicz's original framework):

1. Income: every dollar of revenue lands here first. Stripe payouts, Wise transfers, ACH from clients. Nothing spends from this account.
2. Profit: owner's quarterly profit distribution, held separately so it is psychologically untouchable.
3. Owner Pay: owner's regular salary or draw, paid on a fixed cadence.
4. Tax: set-aside for federal and state tax payments. For a Canadian-owned single-member LLC (SMLLC), this is also where your Canadian personal tax reserve sits.
5. Operating Expenses: the only account that funds vendors, hosting, contractors, subscriptions.

The point of the system is that the Operating Expenses account looks artificially small, which forces you to run lean. The other four accounts are protected by their separate routing numbers, not by willpower.

Relay's sub-account architecture maps directly onto this. Each Profit First account is a Relay sub-account. Allocations on the first and fifteenth are internal transfers inside Relay, which clear instantly. External payments only flow from Operating Expenses, so a vendor never accidentally pulls from your tax reserve.

The five percentages Michalowicz suggests as a starting point for service businesses are roughly five percent profit, fifty percent owner pay, fifteen percent tax, fifteen percent operating expenses, and the remaining fifteen percent stays in income as buffer. These numbers do not survive contact with a non-resident LLC tax reality, which is the next section.

Five-bucket × non-resident LLC tax event matrix

This is the part the original Profit First book does not cover, because it was written for U.S. resident business owners. For a Canadian-owned LLC, each bucket has a different relationship with Form 5472, Form 1042-S, and the Canada-United States tax treaty.

The takeaway is that Profit and Owner Pay are the buckets that drive your Form 5472 filing volume. If you allocate weekly or biweekly, you generate more reportable line items, not more tax. A monthly or quarterly allocation cadence on Profit and Owner Pay keeps the 5472 reporting cleaner without changing your actual tax position. The Tax bucket itself is invisible to the Internal Revenue Service (IRS); only the wire to the U.S. Treasury or the Canada Revenue Agency (CRA) matters.

Our Form 5472 walkthrough for Canadian-owned LLCs covers the Part IV mechanics in detail, including the $25,000 penalty for late filing.

Profit First default percentages: do not copy them blindly

Michalowicz's published starting percentages are a service-business starting point. A non-resident LLC running software-as-a-service (SaaS), e-commerce, or services has very different margin and tax realities. Here is a more realistic starting matrix.

A few things matter for Canadian owners specifically.

The Tax bucket should usually be larger than Michalowicz suggests, because you are reserving for both your U.S. federal tax exposure on Form 1040-NR (if applicable) and your Canadian personal tax on the LLC's pass-through income reported on your T1. For most Canadian operators, the combined effective rate lands in the twenty to thirty-five percent range on net income, so the Tax bucket needs to be sized against net, not gross. A reasonable starting heuristic is to allocate fifteen to twenty percent of gross revenue to the Tax bucket and reconcile quarterly.

The Operating Expenses bucket should match your actual fixed costs as a floor. If your virtual office, registered agent, hosting, and contractor base together cost $4,000 per month, the Operating Expenses bucket cannot be less than $4,000 even if the percentage math says otherwise. The percentages are a guide, not a constraint, and Michalowicz himself says to adjust quarterly.

Three-bucket vs five-bucket vs twenty-bucket: revenue-based decision

Relay supports up to 20 sub-accounts, but more is not always better. The right number depends on your revenue stage, not on what is available.

The mistake most operators make is jumping to twenty buckets at $50,000 revenue. The overhead of allocating across twenty accounts twice a month outweighs the clarity gain at that scale. Start with three or five, and add buckets only when a real cash management failure tells you to. The point of Profit First is behavioral, not architectural.

Where Mercury still fits: the parallel workflow

A lot of Canadian operators reading Relay marketing assume they need to migrate fully off Mercury. They do not, and forcing the migration usually creates more friction than it removes.

The realistic Canadian-LLC banking stack in 2026 is parallel, not sequential.

The typical weekly flow for a Canadian SaaS operator looks like this. Stripe pays out to Mercury checking. On the first and fifteenth, you ACH the cleared revenue from Mercury to the Relay Income account. Relay's internal allocation engine then moves funds to the four other Profit First sub-accounts within seconds. Operating Expenses pays vendors directly from Relay. Owner Pay sends a fixed amount to your personal Canadian account through Wise. Tax sits at Relay until quarterly estimated-tax time, when it wires to the IRS or to your personal CRA reserve.

This split keeps Mercury Treasury earning sweep yield on the larger operating buffer, while Relay handles the behavioral cash management that Mercury's single-account structure cannot do well. Our Mercury vs Relay vs Wise comparison covers the per-fintech strengths in more depth.

Sub-accounts are USD only: what to do with CAD inflow through Wise

Relay sub-accounts hold U.S. dollars. They do not hold Canadian dollars. If your LLC invoices a Canadian client in CAD or receives Wise transfers in CAD, there is no Relay sub-account that can receive the funds in their native currency.

The realistic CAD-to-Relay workflow is:

1. The Canadian client pays your Wise Business CAD account in CAD.
2. You convert CAD to USD inside Wise at near-interbank FX rates.
3. You ACH the USD amount from Wise to your Relay Income sub-account using the Income account's routing number.
4. Relay allocates the new USD across the five Profit First buckets per your standard split.

A few practical notes.

The FX conversion happens at Wise, not at Relay, and the conversion rate plus Wise's small fee is the cost of CAD inflow. Track this as a foreign-exchange line item, not as revenue reduction.

Relay's ACH receive is free at all tiers. Wise's send is either free for slow ACH or has a small fee for faster wires. For non-urgent allocations, slow ACH from Wise to Relay is the cheapest path.

If you bill multiple currencies (CAD, EUR, GBP), Wise is the holding account and Relay is the allocation engine. Trying to do both in one tool produces worse outcomes on each side.

Angles other guides miss

Three details rarely surface in the Profit First content on the first page of search results, and each one matters for a Canadian-owned LLC.

The bank-rejects-registered-agent-address risk applies to Relay too

A pattern that emerged across 2025 is that Relay and Mercury both began rejecting registered agent addresses as the principal business address. If your LLC was formed with the registered agent's address on the state filing and you used the same address on the Relay application, you may pass initial onboarding and then hit a Know Your Customer refresh when you add a fifth sub-account or upgrade to a paid tier. The fix is to separate the three addresses, registered agent, virtual office, and founder home, before the refresh forces it. Our bank rejection recovery guide walks through the verifiable street address requirements.

Relay's prohibited business list excludes more activities than Mercury's

Relay's deposit agreement explicitly lists prohibited business categories, including most cannabis-adjacent activities, money services businesses, certain cryptocurrency operations, and operations in sanctioned countries. Mercury's list is similar but enforced more by post-onboarding review than by upfront screening. If your LLC's NAICS code is in a gray zone, read Relay's prohibited-business list on its legal page before applying. A rejection at Relay is harder to reverse than a rejection at Mercury, because Thread Bank, not Relay, owns the underwriting decision and the appeals path runs through the bank.

FDIC pass-through insurance has a recordkeeping requirement that fails silently

FDIC pass-through coverage on an FBO account applies up to $250,000 per beneficial owner, per insured bank, per ownership category, only when the FBO recordkeeping requirements are met. The recordkeeping responsibility belongs to Relay, not to you. If Relay's records ever fail an FDIC reconciliation in a bank-failure scenario, the pass-through coverage could collapse to the pooled account's $250,000 limit divided across all beneficial owners. This is the underlying reason large idle balances should not all live at Relay. Mercury Treasury's direct-sweep structure is cleaner at the high end, even though Relay's per-customer experience is identical at normal balances.

Operational sample: a $200K-revenue SaaS LLC's weekly Relay flow

This is a structural sample, not a quote of any specific Auteur client. Substitute your own numbers.

A Canadian-owned single-member LLC running a SaaS product at $200,000 in annual recurring revenue, operating on Stripe with twelve to fifteen customers, allocates as follows:

• Stripe payout to Mercury checking: weekly, average $4,000.
• ACH transfer Mercury to Relay Income: bi-weekly on the first and fifteenth, average $8,000.
• Relay internal allocation on the same day:
  • Income buffer (kept in Income): $800 (10 percent)
  • Profit: $1,200 (15 percent)
  • Owner Pay: $2,400 (30 percent)
  • Tax: $1,600 (20 percent)
  • Operating Expenses: $2,000 (25 percent)
• Owner Pay outflow to Wise CAD, then to personal Canadian account: monthly, $4,800.
• Operating Expenses pays AWS, virtual office, registered agent, and contractor base directly.
• Tax accumulates in the Tax sub-account; the operator wires to the IRS quarterly for any 1040-NR exposure, and reserves the rest for the Canadian T1 personal tax payment.
• Profit accumulates in Profit; the operator transfers half to a personal investment account in Canada once per quarter as an explicit profit distribution, with a Form 5472 Part IV entry for the year.

The allocation cadence is what makes this work. Skipping a bi-weekly allocation, or allocating on impulse, defeats the behavioral logic of Profit First and turns Relay's sub-accounts back into expensive labels.

FAQ

Is Relay a bank?

No. Relay is a financial technology company. Banking services are provided by Thread Bank, FDIC Certificate Number 9499, in Rogersville, Tennessee. Your deposits sit at Thread Bank in a For Benefit Of account structure, and FDIC pass-through insurance applies up to $250,000 per beneficial owner when the recordkeeping requirements are met.

Can a non-resident Canadian open a Relay account?

Yes. Relay accepts Canadian passports and Canadian addresses as the signer identification, and the LLC must have a valid EIN. The application is online and typically reviewed within a few business days. SSN is not required. You will need a verifiable U.S. street address for the LLC, not a registered agent address.

How many Profit First buckets should I start with?

Three buckets if annual revenue is below $30,000. Five buckets between $30,000 and $100,000. Seven to ten buckets at $100,000 to $500,000. Twelve to twenty buckets only above $500,000 and only when a real cash management failure justifies the overhead. Most operators start at five and never need more.

Does each Relay sub-account get its own FDIC $250K coverage?

No. FDIC pass-through insurance applies per beneficial owner, per insured bank, per ownership category. Your LLC is one beneficial owner. All sub-accounts combined share one $250,000 ceiling at Thread Bank, plus any extended coverage Relay arranges through additional partner banks. Verify the current partner-bank list on Relay's deposit agreement.

Should I migrate fully from Mercury to Relay?

For most Canadian operators, no. The realistic stack runs Mercury for Stripe payouts and treasury, Relay for Profit First allocation, and Wise for CAD inflow. Migrating fully to either single tool creates more friction than it removes. See our Mercury vs Relay vs Wise comparison for the per-fintech split.

Are Relay's sub-account transfers reportable on Form 5472?

Internal transfers between your own sub-accounts are not reportable, because there is no foreign related party involved. Transfers out of any Relay sub-account to you personally as the foreign member are reportable on Form 5472 Part IV. The Profit and Owner Pay buckets generate the bulk of your reportable line items; the Tax and Operating Expenses buckets generate fewer.

Where to go next

If you are still choosing between Mercury, Relay, and Wise for your Canadian-owned LLC, start with the Mercury vs Relay vs Wise comparison. If your bank already rejected your registered agent address, read the bank rejection recovery guide before adding sub-accounts. If you have not yet mapped your chart of accounts, the bookkeeping setup guide for non-resident LLCs covers the QuickBooks Online and Xero mappings that make Profit First sub-accounts reconcile automatically.

Setting up the right banking stack the first time is cheaper than untangling a single-bucket mess at year two. Get a free quote from Auteur if you want a second pair of eyes on your sub-account structure, your address split, or your Form 5472 mapping before you allocate the next dollar.