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Province of Employment  ·  Remote Work Agreements  ·  T4 Box 10

Remote Employee Province of Employment Calculator

An employee working from home in a province where you have no office is not automatically taxed there. The answer turns on where your establishments are and whether a full-time remote work agreement exists. Work out the province, the tax table, the EHT base, the board that covers them, and what a year of getting it wrong costs to fix.

Establishment test
Remote work agreement
EHT and workers compensation
Cost to correct

Step 1 — Where the Employee Is and Where You Are

British Columbia

British Columbia
Alberta
Quebec
Another province

Their home, not necessarily their tax province

No, only the Ontario office

No, only the Ontario office
Yes, we have premises there

An employee’s home is not your establishment


Any of your establishments, anywhere

Step 2 — The Agreement and the Attachment

Yes, in place and documented

Yes, in place and documented
Informal, nothing written
No agreement at all

Written matters, the test relies on it

The Ontario office

The Ontario office
An office in their own province

The primary indicator in the attachment test


Gross, for the cost comparison

Step 3 — Employer Costs and the Year to Date

Per cent, if the salary sits in the Ontario base


Per cent, zero where the province has none


Per $100 of insurable earnings


Per $100, their board’s rate


On whatever province you have been using


Same province and same arrangement

Province of Employment
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—

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annual employer cost difference

Province of Employment

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Tax Table and TD1

—

In the Ontario EHT Base

—

Workers Compensation Board

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How the Province Was Decided

TestWhat It AsksYour Position

Employer Cost Under Each Answer

ItemIf OntarioIf Their Own Province

If the Year to Date Is on the Wrong Province

ItemBasisEffect

Points That Decide This

    What to Do Next

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    Disclaimer: The province of employment determines which provincial payroll deduction tables and which provincial TD1 an employer applies, and it is reported in box 10 of the T4 slip. Where an employee physically reports for work at an establishment of the employer, the province of employment is generally the province of that establishment. Where an employee does not physically report for work at an establishment, the Canada Revenue Agency has since 2024 applied an administrative approach under which, if a full-time remote work agreement is in place, the employee may be considered attached to an establishment of the employer, assessed first by whether the employee would reasonably be expected to attend that establishment were it not for the agreement, and then by secondary indicators including where the employee attends meetings, receives instructions and supplies, and to whom they report. An employee’s own home is not an establishment of the employer. Where no establishment can be identified, the province of employment is generally taken to be that of the establishment from which the employee’s pay is administered. Ontario employer health tax applies to remuneration paid to employees who report for work at, or are paid from, a permanent establishment of the employer in Ontario, and other provinces impose their own payroll levies on differing bases; workers compensation coverage is administered separately by each province’s board and generally follows where the worker is based rather than the province of employment for income tax. The rates used here for employer health tax, other provincial payroll taxes and workers compensation premiums are editable defaults that should be replaced with the current published figures for your own situation, and exemptions, thresholds and maximum insurable earnings that may apply are not modelled. The correction figures are illustrative estimates of professional and administrative cost rather than a quotation. This page is general information, not tax or payroll advice.

    The Employee’s Home Is Not Your Office

    The instinct is that someone living in Vancouver must be taxed as a British Columbia employee. That is not how the rule works. The province of employment follows an establishment of the employer, and an employee’s spare bedroom is not an establishment of yours no matter how long they work there.

    So a company with one office in Ontario and staff scattered across the country can quite properly be applying Ontario tax tables to all of them. What decides it is where your establishments are, not where your people sleep.

    This changed in 2024. Before then the treatment of employees who never attend an office was unsettled, and many employers defaulted to the employee’s home province. The current approach asks a different question, and a payroll set up under the old assumption may have been wrong every pay period since.

    First Question: Do They Physically Report Anywhere

    If the employee physically reports for work at one of your establishments, the province of employment is the province of that establishment. Someone living in Ottawa who drives to your Gatineau office is a Quebec employee for payroll purposes, however few days they do it.

    Only when there is no physical reporting at all does the second test come into play, and that is where the remote work agreement matters.

    Second Question: Which Office Are They Attached To

    Where the employee never attends an establishment and a full-time remote work agreement is in place, they are treated as attached to one of your establishments. The primary indicator is simple: which office would they have gone to if the agreement did not exist?

    Where that is not clear, secondary indicators are weighed. Where do they attend meetings, in person or otherwise. Where do they receive their instructions and their equipment. Who supervises them and where does that person sit. The answers usually point at one office.

    SituationProvince of Employment
    Physically reports to an establishmentProvince of that establishment
    Never attends, remote agreement, attached to head officeProvince of the head office
    Never attends, remote agreement, attached to a local officeProvince of that local office
    Never attends, no agreementFalls back to where pay is administered
    No establishment identifiable at allGenerally where pay is administered

    The agreement is worth having in writing. The attachment test is built around a full-time remote work agreement, and an arrangement that exists only as a verbal understanding is harder to rely on when someone asks how the province was determined. Putting it in writing costs nothing and is the difference between a documented position and a recollection.

    EHT and Workers Compensation Do Not Follow the Same Rule

    This is where employers get caught out. Having settled the province of employment for income tax, it is tempting to apply it to everything else. The other two obligations run on their own tests.

    Ontario employer health tax reaches remuneration paid to employees who report for work at a permanent establishment of the employer in Ontario, or who are paid from one. Other provinces impose their own payroll levies on their own bases, and some impose none at all.

    Workers compensation is administered province by province and generally follows where the worker is actually based. An employee working in British Columbia is likely covered by that province’s board rather than by WSIB, regardless of which tax table their pay is calculated on.

    So one employee can be on Ontario tax tables, in the Ontario EHT base, and registered with another province’s compensation board at the same time. That is not a contradiction; it is three separate regimes each answering their own question. Treating them as one is the most common error in a distributed payroll.

    What It Costs to Have It Wrong

    Using the wrong province means the wrong tax table and the wrong provincial TD1, so the amounts withheld are wrong. The employee’s own return generally sorts their side out, since they file by their province of residence at year end.

    The employer’s side does not self-correct. Box 10 on every affected T4 is wrong, which means amended slips. The provincial payroll tax base may have been understated or overstated. And where a compensation board should have been receiving premiums and was not, that board’s registration and premium history has to be put right, sometimes with interest.

    What This Calculator Does Not Cover

    • Quebec’s separate payroll regime, which adds QPP, QPIP and its own remittances
    • EHT exemptions and thresholds, and the associated employer rules that reduce them
    • Maximum insurable earnings for workers compensation premiums
    • Employees who split time across several provinces in a single year
    • Non-resident employees or those working outside Canada
    • Whether a location amounts to an establishment, which is a question of fact

    A distributed payroll is worth reviewing once, properly. Our payroll help and support service covers the province determination for each employee, the remote work agreements, the EHT base, board registrations and any amended T4s the review turns up.

    Frequently Asked Questions

    Common questions on province of employment for remote staff.

    Which province’s tax table applies to a remote employee?
    The one for the province of employment, which follows an establishment of the employer rather than the employee’s home. If they physically report somewhere, that establishment decides it. If they never attend and a full-time remote work agreement is in place, they are treated as attached to the establishment they would otherwise have attended.

    Is an employee’s home an establishment of the employer?
    No. That is the point people most often get wrong. A company with one Ontario office and staff working from home across the country may quite properly be applying Ontario tax tables to all of them.

    What is a full-time remote work agreement?
    An agreement under which the employee works full time from a location that is not an establishment of the employer. It matters because the attachment test used to determine the province of employment for someone who never attends an office is built around it, so having it in writing supports the position taken.

    Does the province of employment decide EHT as well?
    No. Ontario employer health tax applies to remuneration paid to employees who report for work at, or are paid from, a permanent establishment of the employer in Ontario, which is its own test. Other provinces have their own payroll levies or none at all.

    Which workers compensation board covers a remote worker?
    Coverage is administered province by province and generally follows where the worker is actually based. So an employee working in another province is likely covered by that province’s board rather than WSIB, even where their income tax is calculated on Ontario tables.

    Which provincial TD1 should a remote employee complete?
    The one for the province of employment, not the province they live in. Where those differ, the employee sometimes queries it, and the explanation is that withholding follows the employer’s establishment while their own return follows their province of residence at year end.

    What if we have used the wrong province all year?
    Box 10 on every affected T4 needs amending, the provincial payroll tax base may be understated or overstated, and any compensation board that should have been receiving premiums has to be registered and brought current. The employee’s own return generally sorts their side out, but the employer’s side does not self-correct.

    Did the rules change recently?
    The treatment of employees who never attend an office was unsettled before 2024, and many employers defaulted to the employee’s home province. The current approach asks which establishment the employee is attached to instead, so a payroll set up on the older assumption may have been wrong since.

    Settle the Province Before the T4s, Not After

    Send us the list of employees by home province, where your establishments are, and whether remote work agreements exist. We will determine the province of employment for each, confirm the EHT base and board registrations, and deal with any amended slips the review turns up.

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