For Canadian companies in the U.S.

U.S. tax. Without the guesswork.

Federal, state, and treaty — handled in one place.

Led by a CPA, CA with more than 15 years at international firms.

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1120 / 1120-FCorporate returns

1065Partnerships · K-1 / K-2 / K-3

50 statesNexus & sales tax

1 contactCoordinated with your Canadian advisors

One hire. One warehouse.
Everything changes.

A first U.S. employee, warehouse, or big contract can create filings you didn't expect. Check before you sign — it's the cheapest moment to get it right.

Run the 2-minute check

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Built for one client. You.

Canadian businesses earning, employing, or investing in the U.S. Nothing else.

Already in the U.S.

Yearly filings, estimates, and provisions — done reliably, on time.

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About to enter

The structure you choose in month one is the cheapest you'll ever get.

Plan your entry

Buying or partnering

Deals tested on after-tax results — before you close.

See deal support

Missed some years?

We rebuild the picture first, then clean it up the least disruptive way.

Start a review

Why KH

Big-firm experience. Reasonable price.

Pretty much the same service you'd get from an international firm — because your preparer spent more than 15 years at international firms — at a reasonable price, without the big-firm overhead.

CPA, CALed by a chartered professional accountant

15+ yearsExperience at international firms

Same serviceSame depth, standard, and care

Reasonable priceNo big-firm overhead built in

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What we do

Six services. That's the whole list.

Do you have to file?

Five questions. One clear signal. General information — not advice for your specific facts.

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Answer the questions to see your signal.

Get a proper review

Key deadlines

Calendar-year filers. Counts update from today.

Industries we see most

Same forms. Different tripwires.

Technology & SaaS — remote staff, revenue sourcing
Manufacturing — inventory, warehouse nexus
E-commerce — marketplace & sales-tax thresholds
Services — people working in the U.S.
Construction — project-site filings & payroll
Real estate — FIRPTA & withholding

How it works

Map

Entities, people, inventory, sales by state.

Decide

Treaty position and structure, in plain language.

Calendar

Every filing, who supplies what, by when.

Stay ahead

Check-ins before you hire, expand, or sign.

Questions, answered briefly

Yes — most often at state level. States can require filing on sales volume alone (often $100,000). Federally, claiming treaty protection usually means filing a protective Form 1120-F. A nexus review is the first step.

Be careful. The U.S. looks through an LLC; Canada treats it as a corporation. That gap can tax the same income twice. A U.S. corporation is usually the safer answer for Canadian owners.

Who the taxpayer is. 1120 is for U.S.-created corporations. 1120-F is for foreign corporations — including Canadian ones — with a U.S. branch or U.S. income.

With reconstruction, not filing. We rebuild year by year, estimate the exposure, then choose the clean-up route. Acting before a notice arrives keeps the better options open.

No — business tax only: corporations and partnerships. If your matter is personal, we'll say so and point you to someone built for it.

Tell us where you touch the U.S.

A few details are enough. Or email us at khuscorporatetax@gmail.com