Overview
When an employee has more than one province or territory of employment during the calendar year, the Canada Revenue Agency (CRA) requires a separate T4 slip for each applicable province or territory.
ZonePayroll supports this requirement by generating T4 slips based on the province or territory recorded for each employee’s payroll payments.
💡 Example: If an employee has employment in both Ontario and Alberta during the year, ZonePayroll generates a separate T4 slip for each province, provided the correct province information was recorded during payroll processing.
Employees with only one province or territory of employment generally continue to receive one T4 slip, unless other reporting requirements apply.
⚠️ Important: ZonePayroll does not automatically detect when an employee changes their province or territory of employment. Payroll administrators must maintain accurate employee information to ensure correct T4 reporting.
⚙️ How It Works
ZonePayroll uses the employee’s Territory/Province field, located under the Payroll tab, to determine the province or territory associated with payroll payments.
Province or territory is assigned: The Territory/Province field identifies the location used for payroll calculations and reporting.
Province information is recorded during payroll processing: When payroll is processed and paid, the applicable province or territory is recorded with the payroll payment.
Earnings and deductions are grouped by province: When T4 slips are generated, ZonePayroll accumulates the applicable earnings and deductions based on the province or territory recorded for each payment.
Separate T4 slips are generated: If payroll payments are associated with more than one province or territory during the year, ZonePayroll generates a separate T4 slip for each applicable province or territory.
If an employee moves between the same two provinces multiple times during the year, the amounts are combined by province. The employee generally receives one T4 slip per province, rather than a separate slip for each move.
📌 Note: The province of employment is determined according to CRA rules and may differ from where an employee lives or physically performs their work, particularly for remote employees.
🛠️ Maintaining the Correct Province or Territory
Payroll administrators are responsible for ensuring the employee’s province or territory of employment is recorded accurately in ZonePayroll.
📍 Where to Find the Territory/Province Field
Open the employee’s record in ZonePayroll.
Select the Payroll tab.
Expand the Calculation Info section.
Locate the Territory/Province field.
Verify that the selected province or territory is correct.
🖼️ [Insert screenshot: Employee Record → Payroll → Calculation Info → Territory/Province]
🔄 When an Employee Changes Provinces
When an employee’s province or territory of employment changes, the administrator must update the Territory/Province field to reflect the correct location for payroll processing.
🚨 Important: If an employee begins working in another province and the Territory/Province field is not updated, ZonePayroll will continue using the province recorded in the system.
As a result:
❌ Payroll payments may continue to be associated with the previous province.
❌ Earnings and deductions may be reported under the incorrect province.
❌ ZonePayroll may not generate the separate provincial T4 slip required for the employee.
Updating the employee’s current Territory/Province field does not automatically correct province information associated with previously processed payroll payments.
If the province was recorded incorrectly, administrators must review and correct the affected historical payroll records before generating T4 slips.
📊 EI and CPP Annual Maximums
Employees who have employment in more than one province during the calendar year remain subject to the applicable annual Employment Insurance (EI) and Canada Pension Plan (CPP) contribution limits.
Generating multiple T4 slips does not, by itself, create a new annual EI or CPP maximum for each province.
When preparing T4 slips, insurable and pensionable earnings must be reported correctly across the applicable provincial slips.
💼 EI Insurable Earnings — Box 24
Box 24 reports EI insurable earnings, up to the applicable annual maximum.
When an employee receives more than one T4 slip, the insurable earnings for each applicable employment period are reported on the corresponding slip.
The combined insurable earnings reported across the slips must reflect the applicable annual limit and reporting rules.
As a result, Box 24 may be lower than the employment income reported in Box 14.
🏦 CPP Pensionable Earnings — Box 26
Box 26 reports CPP or QPP pensionable earnings, subject to the applicable annual reporting limits.
When an employee receives multiple T4 slips, pensionable earnings must be reported for the relevant employment periods without incorrectly duplicating annual limits.
CPP and CPP2 have different contribution thresholds, and the annual pensionable earnings reporting limit may differ from the EI insurable earnings maximum.
Additional requirements may apply when an employee has employment in Quebec and another province during the year.
📋 Employment Income and Deductions
Each provincial T4 slip reports the applicable employment income and payroll deductions associated with that province or territory.
| T4 Box | Description |
| Box 10 | Province or territory of employment |
| Box 14 | Employment income |
| Box 16 | Employee CPP contributions, where applicable |
| Box 16A | Employee CPP2 contributions, where applicable |
| Box 18 | Employee EI premiums |
| Box 22 | Income tax deducted |
| Box 24 | EI insurable earnings |
| Box 26 | CPP/QPP pensionable earnings |
The amounts in Boxes 24 and 26 may differ from Box 14 because of annual maximums, insurability or pensionability rules, and other applicable payroll requirements.
🧮 Example: Employee Working in Ontario and Alberta
An employee has the following employment income during 2026:
🔹 Ontario: $30,000
🔹 Alberta: $40,000
🔹 Total annual employment income: $70,000
For 2026, the maximum annual EI insurable earnings are $68,900.
Assume the employee works in Ontario first, then Alberta, remains with the same employer, and all earnings are EI-insurable with no other applicable adjustments.
The T4 slips would report the following:
| T4 Box | Ontario T4 | Alberta T4 |
| Box 10 — Province of employment | ON | AB |
| Box 14 — Employment income | $30,000 | $40,000 |
| Box 24 — EI insurable earnings | $30,000 | $38,900 |
📐 How Box 24 Is Calculated
The Ontario T4 reports the first $30,000 of EI insurable earnings.
-
The Alberta T4 reports the remaining amount available under the annual EI maximum:
$$\$68,900 - \$30,000 = \$38,900$$
Although the employee earned $40,000 in Alberta, only $38,900 is reported in Box 24 on the Alberta T4.
The combined Box 24 amounts equal the 2026 annual EI insurable earnings maximum of $68,900.
📝 Note: This example illustrates EI insurable earnings only. CPP pensionable earnings, CPP2 contributions, EI premiums and income tax deductions are calculated and reported according to their respective requirements.
⏳ Before Generating T4 Slips
Before beginning year-end T4 processing, payroll administrators should review employee province or territory information.
✅ Recommended Checklist
[ ] Verify that each employee’s Territory/Province field reflects the correct province or territory of employment.
[ ] Identify employees whose province or territory of employment changed during the calendar year.
[ ] Confirm that province changes were recorded at the appropriate time.
[ ] Review historical payroll payments to ensure they are associated with the correct province or territory.
[ ] Correct any payroll records containing incorrect province information before generating T4 slips.
[ ] Review employees with Quebec employment for any additional CPP/QPP, EI or provincial reporting requirements.
🔔 Reminder: ZonePayroll generates T4 slips based on the province information recorded with payroll payments. If the Territory/Province field was not updated when required, the system will not automatically identify the missing provincial reporting information.
🔍 After Generating T4 Slips
Before filing or distributing T4 slips, review the generated information for accuracy.
For employees with more than one province or territory of employment:
✔️ Confirm that a separate T4 slip was generated for each applicable province or territory.
✔️ Verify that Box 10 displays the correct province or territory.
✔️ Review employment income and deductions reported on each slip.
✔️ Verify that EI insurable earnings and CPP pensionable earnings are reported correctly.
✔️ Confirm that applicable annual limits and CRA reporting requirements have been respected.
If the province or territory was recorded incorrectly, the affected payroll records may require correction before the T4 slips are regenerated.
❓ Frequently Asked Questions
Will an employee receive multiple T4 slips if they change provinces during the year?
Yes. If an employee has more than one province or territory of employment during the year, separate T4 slips are required for the applicable provinces or territories.
What happens if an employee moves back and forth between the same two provinces?
ZonePayroll groups earnings and deductions by province. The employee generally receives one T4 slip for each province, rather than a separate slip for every move.
Does ZonePayroll automatically detect when an employee changes provinces?
No. ZonePayroll relies on the Territory/Province information maintained on the employee’s payroll record. Payroll administrators must update this information when the employee’s applicable province or territory of employment changes.
What happens if the Territory/Province field was not updated?
Payroll payments may continue to be associated with the previous province, resulting in incorrect T4 reporting. The administrator must review and correct the affected payroll records before generating T4 slips.
Does receiving multiple T4 slips mean an employee has multiple EI or CPP annual maximums?
No. Separate provincial T4 slips do not automatically reset the applicable annual EI or CPP contribution limits.
What if an employee lives in one province but works remotely for an employer in another?
The province of employment must be determined according to CRA rules. An employee’s residential address or physical work location does not necessarily determine the province reported on their T4.
🔗 Additional Resources
For more information, refer to the following CRA resources:
🌐 T4 slip – Information for employers — Information on T4 slips for employers; how and when to complete and distribute the slips, box 45, how to amend, cancel, add, or replace T4 slips; how to correct CPP, EI and salary overpayment errors; and approval of customized forms.
🌐 Employers' Guide – Filing the T4 Slip and Summary — Information for employers on how to complete T4 returns (slips, summary).
🌐 EI premium rates and maximums – Calculate payroll deductions and contributions — Employment Insurance (EI) premiums rates and maximums.
Additional reporting requirements may apply to Quebec employment and other special payroll circumstances.