How to Start a Business in Both Canada and the US

Published: May 22, 2026
Updated: May 22, 2026
Read time: 15 minutes

You may already have the product, the first customers, and a reason to sell on both sides of the border. What usually stalls the plan is not demand. It’s the fear of getting the setup wrong. If you want to start a business in both Canada and the US, the hard part isn’t filing one incorporation form. It’s putting legal structure, tax registration, banking, and work authorization in the right order.

At Mayo Law, we help founders in Toronto, the GTA, and across the border handle that process with experience licensed in both Ontario and New York on a matter that often spans both sides of the border. If you need help with cross-border structuring, contracts, or market entry, see our international business legal services. The founders who avoid expensive cleanup usually make one decision early. They treat the launch as an operating plan, not a filing exercise.

How to Structure Your Canada-US Business

The main ways to structure a cross-border business are:

1. U.S. parent with Canadian subsidiary
2. Canadian parent with U.S. subsidiary
3. Sister companies in each country
4. Hybrid arrangements for specialized cases

If you choose the wrong structure at the start, you usually feel it later in tax reporting, banking friction, investor diligence, and intercompany contract work. That’s why structure comes before naming, filing, and account opening.

U.S. parent with Canadian subsidiary

This model is common when the business expects U.S. investors, U.S. customers, or a U.S.-centric exit. The parent owns the Canadian entity, which gives you a clearer separation between the two operations.

For a software company planning to raise venture capital, this often aligns better with investor expectations. The trade-off is that founders sometimes assume the Canadian side is just an administrative branch. It isn’t. It’s a separate company with its own registrations, tax obligations, records, and local contracts.

A practical example is a founder team selling into both New York and Ontario, but building with U.S. financing in mind. In that case, a U.S. parent can make cap table management simpler, while the Canadian subsidiary hires local staff and contracts with Canadian customers.

Canadian parent with U.S. subsidiary

This model often works for Canadian businesses expanding south, especially when the original management team, operations, and ownership are already centered in Canada. It can also make sense where the Canadian business is the primary operating company and the U.S. launch is an extension of an established business.

Canada is not a niche small-business market. Federal data shows that as of December 2024 there were 1.10 million employer businesses in Canada and 98.2% were small businesses. In 2023, 97.8% of all registered businesses were classified as small, with another 1.9% medium-sized. The same federal source notes that the Canadian Chamber of Commerce’s Business Data Lab reported 1.35 million businesses in Canada with paid employees in June 2023. In the United States, the U.S. Chamber of Commerce reports that small businesses employ nearly half of the American workforce, account for 43.5% of U.S. GDP, and new business applications have exceeded 5 million annually since 2020. These numbers show that founders entering both markets are operating inside two very large business systems, not testing an edge case (federal Canadian small-business statistics).

Practical rule: Pick the parent where you expect long-term control, financing, and strategic decision-making to sit. Don’t pick it just because that country feels more familiar.

Sister companies in each country

This is often the cleanest operating model for service businesses, consulting firms, agencies, and founder-led businesses that want clearer separation. Instead of one company owning the other, the same founders own both entities.

That can simplify local contracting, payroll, and liability allocation. It also avoids forcing every operational issue into an intercompany parent-subsidiary framework. The cost is more coordination. You need disciplined contracts between the entities, consistent IP ownership planning, and clean accounting lines.

An anonymized example is a consulting business with one partner based in Toronto and another in New York. Sister companies can let each side invoice local clients, run local payroll, and manage local tax registrations without pretending one office is merely an appendage of the other.

Hybrid arrangements

Some businesses need something more specific. That can happen where a holding company sits above operating companies, where IP is separated from service delivery, or where regulated activities require a local ownership or licensing approach.

These structures can work, but they should be built for a clear reason. If the only reason is that someone said it sounded impressive, that usually ends badly.

For a more detailed entity-level comparison, see this guide on choosing the right entity for your U.S. business.

Where Should You Incorporate First US or Canada

You have a founder in Toronto, a co-founder in New York, a U.S. customer ready to sign, and a Canadian hire starting next month. The wrong first filing can force a cleanup job within weeks. I see that happen when founders choose a country based on instinct, then discover the actual pressure point was payroll, banking, investor requirements, or work authorization.

The first incorporation should match the first place the business needs to function, not just the first place it wants to sell.

When Canada is the better first filing

Start in Canada first when management, early operations, and near-term hiring are centered there. That is often the cleaner choice for Canadian founders building a service business, a professional practice, or a company testing its model before raising outside capital.

It also matters how much activity will happen inside Canada in the first six to twelve months. If contracts will be signed there, staff will be paid there, and the books will be run there, a Canadian corporation usually gives you the most direct path to getting operational.

You still need to choose between federal and provincial incorporation. Federal incorporation can make sense if you expect to operate across provinces or want broader name protection. Provincial incorporation can be enough if the business is staying concentrated in one province for now. The better answer usually turns on where you will hire, contract, and open accounts, not on which filing sounds more ambitious.

When the U.S. should come first

Start in the U.S. first when the business case is already U.S.-led. Common examples are a startup raising from U.S. investors, a company selling mainly to U.S. customers, or a founder entering an industry where buyers expect to contract with a U.S. entity.

That choice can save a later reorganization. It can also create extra work sooner.

A U.S. corporation does not cover Canadian operations by default. If the company is carrying on business in Canada, paying people there, or signing Canadian clients, Canadian registrations and local compliance still need to be handled separately. Founders often miss that point and assume one entity gives them North American coverage. It does not.

Sequence decides whether the structure actually works

The filing country matters. The order matters more.

The usual failure point is not the incorporation itself. It is choosing a parent or operating entity before working through tax registrations, banking requirements, ownership documents, and founder mobility. A structure that looks efficient on paper can become awkward fast if the company cannot open accounts, pay workers lawfully, or support the founder's cross-border travel plan.

A practical order looks like this: decide where revenue and operations begin, choose the first entity based on that reality, confirm whether a second entity will be needed soon after, then line up tax IDs, banking, payroll, and contract flow around that sequence. Founders who reverse that order often create avoidable friction. I have seen companies incorporate in the U.S. for optics, then spend months fixing Canadian payroll, sales tax, and banking issues because Canada was where the work was happening.

For a formation-level explanation, this guide on what a certificate of incorporation is explains what the filing creates and what it does not.

A practical test before you file

Use these questions to decide the first jurisdiction:

• Where will the first meaningful revenue be earned
• Where will day-to-day management happen
• Where will employees or core contractors work
• Where will the business need payroll, sales tax, or local licensing first
• Where do likely investors expect the parent company to sit
• Will the founder need to live or work across the border as part of operations

If most answers point to one country, that is usually the right first filing. If the answers split, do not force a single-company story that does not match the business. A parent-subsidiary setup or two operating companies can be the cleaner move, especially when legal, tax, and immigration timing are pulling in different directions.

The Registration and Compliance Playbook

Founders usually think the risk is in the incorporation filing itself. In practice, the failure point is usually the handoff between entity formation, tax registration, and banking. A company can be legally formed and still be operationally stuck.

Start with name clearance, not logo design

The business name should be cleared before you print materials, sign a lease, or commit to public branding. In Canada, founders often need to think about name registration and tax account registration as separate steps. In the U.S., state formation, federal tax ID, and state licensing are also separate.

That distinction matters because people often say “the company is registered” when only one layer is done. That sentence can hide several missing steps.

File the entity, then get the tax identifiers

For a U.S.-Canada expansion, the most failure-prone operational step is entity and tax setup rather than incorporation itself. Canada's federal guidance separates business planning, name clearance, registration, and permits. U.S. guidance adds EIN and tax IDs, licenses, and bank setup after formation. The practical sequence is to choose structure and jurisdictions, clear the name, file formation documents, obtain tax IDs, then open banking and apply for local and federal permits. A key technical mistake is assuming one registration solves both countries (Canadian federal startup guidance).

Once the entity exists, the next question is tax identity. In Canada, that usually means the Business Number, then any specific program accounts you need. In the U.S., it means the EIN, and depending on the state, additional tax IDs may follow.

Registered agent, service address, and local registration

U.S. entities usually need a registered agent or serviceable address in the state of formation. That sounds minor until service of process, annual notices, or banking verification depend on it.

Canadian founders entering the U.S. often forget a second layer. If the U.S. company forms in one state but operates in another, it may also need foreign qualification in the operating state. The same logic appears on the Canadian side with extra-provincial registration where business is carried on outside the home province.

Operational insight: Founders lose time when they treat formation and authority to operate as the same thing. They're often two different filings.

Banking should not be an afterthought

Banking delays usually come from incomplete paperwork, inconsistent addresses, or mismatched corporate records. That's why I prefer to have minute book documents, governing documents, IDs, and tax confirmations aligned before the founder walks into a bank or starts an online application.

Mayo Law works with founders across the GTA and on cross-border matters. Joseph Mayo is licensed in Ontario and New York, so clients with U.S. ties can coordinate legal work in one place rather than splitting basic setup across separate firms.

A typical pattern looks like this:

• Formation filed but no tax ID yet. The bank won't complete onboarding.
• Tax ID obtained but bylaws or operating agreement missing. KYC review stalls.
• U.S. company formed remotely. The bank asks for a physical U.S. business address.
• Canadian company registered. The founder assumes GST or payroll accounts are automatic when they're not.

What actually works

The businesses that launch with fewer delays usually do five things in order:

1. Choose the structure first based on control, tax, and operations.
2. Confirm naming availability before filing or signing customer documents.
3. Prepare governance documents early so the entity record is clean.
4. Apply for tax IDs immediately after formation.
5. Map local operating registrations before hiring, importing, or selling.

An anonymized example is a founder who formed a U.S. company online, then tried to invoice Canadian clients and hire a contractor in Ontario. The entity existed, but the tax accounts, local registrations, and banking package were incomplete. The cleanup cost more time than the initial filing saved.

Another example is a Canadian company expanding to the U.S. with a formed subsidiary but no registered agent alignment, no EIN confirmation on hand, and no finalized parent-subsidiary resolutions. The bank request list exposed every gap at once.

For a practical formation checklist on the Canadian side, see this Ontario incorporation checklist.

Cross-Border Tax and Banking Setup

Founders usually start asking the right questions. Not “do I have a company?” but “can the company invoice, collect tax, pay people, and move money without triggering problems?”

What tax registration actually means

Tax registration follows activity, not just incorporation. If the company sells taxable goods or services, hires staff, or imports products, registrations can arise earlier than the founder expects.

In Canada, businesses must register for GST/HST once taxable revenues exceed $30,000, and they may also need PST or QST depending on the province. In the U.S., the SBA notes that an EIN is used for opening a bank account and paying taxes, and some states require additional tax IDs. Canadian banks typically ask for formation documents, BN, and ID. U.S. banks may ask for formation papers, EIN confirmation, bylaws or operating agreement, and a physical U.S. business address (cross-border registration and banking guidance summarized by Helcim).

Key tax comparison

That table is intentionally simple. The key question is not which country is “easier.” It's which filings your business activity triggers first.

Don't assume the treaty solves setup

Founders often hear “there's a tax treaty” and assume the treaty eliminates practical compliance. It doesn't. Treaty planning can matter for cross-border tax exposure, but it does not replace registrations, accounting setup, or local filing obligations.

If a founder has one company in Canada and one in the U.S., the bookkeeping needs to reflect reality. Revenue allocation, management fees, IP ownership, and intercompany services should not be improvised after year-end.

Set up the accounting map before the first invoice crosses the border. Accountants can fix books later, but legal and tax characterization problems get harder once money has already moved.

Banking friction is mostly documentation friction

The bank wants a coherent story. The legal name, formation documents, tax IDs, addresses, signing authority, and beneficial ownership details have to line up.

What works in practice:

• Use matching legal names across formation, tax, and banking records.
• Prepare signing resolutions before the account appointment.
• Keep ownership records current if multiple founders or a holding company are involved.
• Expect address scrutiny for U.S. banking, especially where owners are foreign.

What doesn't work is trying to “come back later” with missing documents after payment operations have already started. Banks are more willing to delay onboarding than to waive internal verification.

Payment operations need a currency plan

If you collect in USD and CAD, decide early which entity invoices which customer group and where funds land first. Some businesses can centralize collections. Others are better off with local invoicing and local accounts. The wrong choice can create accounting noise and tax confusion.

A simple rule helps. The entity signing the customer contract should usually be the entity invoicing and receiving payment, unless there is a deliberate and documented intercompany arrangement.

Can a Founder Work in Both Canada and the US

A common failure point looks like this: the founder forms the U.S. company, opens talks with customers, books travel, and only then asks whether running sales calls, hiring staff, or managing operations in person is legal. By that stage, the corporate work may be done, but the immigration strategy is already behind the business plan.

Ownership is not work authorization

A founder can own shares in a Canadian or U.S. company without having permission to work there. Those are separate legal questions, and treating them as one is where many do-it-yourself cross-border plans break down.

That distinction matters in practice. A founder may be allowed to sign formation documents, fund the company, attend certain meetings, or oversee strategy from abroad. Day-to-day management inside the country, hands-on service delivery, and local employment activity often trigger a different analysis.

For founders entering Canada, options may include the Start-Up Visa or another work permit route, depending on the business model, control structure, and timing. As noted in this overview of Canada Start-Up Visa planning, the immigration path and the company setup need to line up early, not after operations begin.

Working in the United States

Canadian founders usually ask about three U.S. pathways first: E-2, L-1, and TN. The right fit depends less on preference and more on facts already created by the structure, funding, and the founder's role.

• E-2 works for a founder who has the right nationality, has made a qualifying investment, and will direct and develop the U.S. business. Mayo Law's guide to the E-2 visa for treaty investors explains the basic framework.
• L-1 depends on a qualifying relationship between companies and a role that fits executive, managerial, or specialized knowledge criteria.
• TN can work in narrower cases where the proposed U.S. role fits a listed professional category. Many founder roles do not fit cleanly.

The sequencing matters. If the likely path is L-1, the corporate relationship and the founder's employment history need to support that plan before documents are filed. If the likely path is E-2, the investment trail, source of funds, and business plan need to be assembled in a way that matches the application. Founders often create avoidable problems by incorporating first and asking later whether the chosen structure supports the intended visa.

Working in Canada

U.S. founders face the same basic issue in reverse. Entering Canada as an owner, a business visitor, a transferee, or a worker are different categories, and each permits different activities.

A founder who wants to attend limited meetings may have a different entry option than a founder who plans to relocate and run the Canadian operation directly. I often see founders assume the Canadian company can be formed now and the work permit can be sorted out later. That approach creates pressure at the wrong time, especially if the founder must be in Canada to hire, sign leases, supervise staff, or launch operations.

If the business model requires in-country management from day one, solve the immigration piece before launch. That usually means choosing the entity structure, role description, ownership pattern, and timing with the permit strategy in mind.

Two mistakes that cause expensive rework

The first is treating business travel as a substitute for work authorization. Some meeting, conference, or exploratory activities may be allowed without a work permit. Actively running the business inside the country is a different question.

The second is building the company chart without asking what immigration route it needs to support. A sister-company structure may be fine for tax or commercial reasons, but it can be less useful if the founder was counting on an intracompany transfer. A parent-subsidiary model may create a cleaner record for one objective while adding complexity somewhere else. The right answer depends on what the founder needs to do, where, and when.

That is why this part of the process should be handled as an operational sequence, not a generic checklist. First identify the founder's real activities in each country. Then choose the immigration path those activities require. After that, build the corporate structure and documentation to support both the business and the application.

Protecting Your Assets and Finalizing Cross-Border Agreements

Once the companies exist, the next risk is assuming the hard part is over. It isn't. Cross-border founders need to lock down ownership, records, IP, and contracts before business starts moving quickly.

IP is territorial

A U.S. trademark or patent does not protect you in Canada unless you file there, and Canada generally operates on a first-to-file basis for trademarks and patents. Cross-border founders also need to think about beneficial ownership reporting and corporate recordkeeping from day one, especially because Canada's beneficial ownership transparency rules have tightened while U.S. reporting under the Corporate Transparency Act has been in flux (cross-border compliance and IP considerations).

That means your brand protection plan should match your market entry plan. If you're selling in both countries, filing in one country only is often a false economy.

Contracts should match the structure

If you use a parent-subsidiary model, document intercompany services, IP licensing, and management authority properly. If you use sister companies, decide which entity owns the brand, which one employs staff, and how referrals or shared clients are handled.

A few clauses matter a lot in cross-border contracts:

• Choice of law so everyone knows which legal system governs disputes.
• Jurisdiction so parties know where disputes are heard.
• IP ownership language for founders, contractors, and employees.
• Payment and currency terms so invoices are not ambiguous.
• Termination mechanics so one side can unwind without chaos.

If you're still organizing the internal governance side, this article on what bylaws of a company are is a good refresher.

Notarization and document use across borders

Some documents used across the border need notarization, authentication, or apostille-style handling depending on where and how they'll be used. That issue usually appears when opening accounts, proving corporate authority, or using affidavits and certified records in another jurisdiction.

It's better to identify those document needs early than to discover them when a bank, registry, or counterparty is already waiting.

Frequently Asked Questions

Do I need two separate companies to operate in both Canada and the US

Not always. Some founders use a parent-subsidiary structure and others use sister companies. The right answer depends on who owns the business, where contracts are signed, where hiring happens, and how you want liability and tax reporting divided. The wrong answer is assuming one country's entity automatically authorizes full operations in the other.

How much does it cost to start a business in both Canada and the US

The total cost depends on structure, filings, tax registrations, banking requirements, and whether immigration planning is needed. There usually isn't one all-in number because costs change by state, province, industry, and whether you need extra registrations or local permits. A careful budget should include formation, governance, accounting setup, and post-formation compliance work.

How long does the setup usually take

The legal filing can be quick, but the full setup often takes longer because tax IDs, banking, permits, and cross-border document review need to line up. Delays usually come from missing records, address issues, or trying to open accounts before tax registrations are complete. Founders who sequence the work properly usually avoid the longest delays.

Can I live in Canada and run a US company

You can usually own and manage the company from Canada at the ownership level, but if you plan to physically work in the U.S. you need the right immigration status. The same principle applies in reverse for U.S. founders operating in Canada. Where you sit physically, what services you perform, and how often you travel all matter.

What is the biggest legal risk after incorporation

The biggest post-incorporation risk is usually assuming the company is “done” once the formation filing is accepted. In reality, beneficial ownership reporting, recordkeeping, tax registrations, banking documentation, contracts, and IP protection all continue after formation. A lot of cross-border problems start because founders stop planning too early.

Conclusion

A two-country launch is manageable when you treat it as a sequence, not a stack of disconnected tasks. Structure comes first. Then registration, tax setup, banking, work authorization, and asset protection follow in a deliberate order. If you're trying to start a business in both Canada and the US, the goal isn't just getting incorporated. It's building something that can operate cleanly on both sides of the border without expensive corrections later.

If you're planning a Canada-US launch and want the structure, filings, contracts, or immigration strategy reviewed before you commit, Mayo Law advises founders and companies on cross-border business matters from Toronto and New York.

How Mayo Law Can Help

Founders usually get into trouble between steps, not within them. They form the company before confirming tax treatment, sign cross-border contracts before the entity is properly set up, or make hiring plans before checking whether the founder can lawfully work in both countries.

Mayo Law advises on those sequencing decisions. We help clients across Toronto, the GTA, and in cross-border matters determine what should be handled first, what can wait, and which filings, agreements, and immigration steps need to line up to avoid rework.

If you want counsel on structure, registrations, contracts, or founder mobility issues, visit our international business legal services page.

Disclaimer

This article is for informational purposes only and does not constitute legal advice. Every situation is different. Consult a licensed lawyer about your specific circumstances. Mayo Law provides legal services through Mayo Law PC in Ontario and Joseph Mayo PLLC in New York.

Related Articles

Founders usually need one of three follow-up resources after the setup work is mapped out: immigration strategy, treaty investor planning, or ongoing compliance support. These pieces go deeper on those issues.

• E-2 visa lawyer
• Compliance legal services

Joseph Mayo Partner

Joseph Mayo is an international lawyer licensed in Ontario and New York. He advises individuals, founders, investors, and businesses on immigration, real estate, business law, compliance, and white collar defense, with a focus on complex matters involving Canada, the United States, and international legal issues.

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