How to Calculate EI Deductions in Canada

Payroll is due Friday morning, and you are not certain how to calculate EI deductions in Canada for three new employees. One is a salaried estimator, one is a part-time warehouse worker, and one is already near the annual maximum insurable earnings. The formula is short, but the context around it matters. Use the wrong rate, ignore the maximum, or classify a bonus incorrectly, and you will have a CRA payment mismatch and a reconciliation problem at year end. If you have not yet mapped out your full payroll workflow, start with our guide to how to run payroll in Canada, then come back for the EI-specific math. The example numbers in this article are for illustration only; the CRA rates page is the only place to get the figures for the current year.

Table of Contents

• What counts as insurable earnings for EI
• How to calculate EI deductions in Canada for each pay period
• EI deduction example: one pay run, three employees
• Manual versus automated EI calculations
• When to stop deducting EI and how to remit
• Common EI calculation mistakes to avoid
• How EI fits into the full payroll remittance
• Calculating EI on bonuses and variable pay
• How to verify your EI calculation with CRA tools
• How payroll systems track EI deductions
• Frequently asked questions
• What to do next

What counts as insurable earnings for EI

EI premiums are not calculated on every dollar you pay an employee. The CRA uses the term insurable earnings to describe the amounts subject to EI. You need to separate those amounts from other payments before you do the math.

Most cash remuneration counts. Salary, wages, commissions, bonuses, cash tips, paid vacation days, and statutory holiday pay are generally insurable. Some taxable benefits are also insurable, but not all of them. Employer contributions to a registered pension plan are usually not insurable. The personal use of a company vehicle is more complicated, and the answer can change based on how the benefit is structured.

Here is a quick reference for common payments:

Use the table as a starting point, not as legal advice. The CRA's Payroll Deductions Online Calculator includes current rules for most payments, and it is a useful check before you process a large payroll run. A single misclassified benefit can change the deduction for the whole pay period.

How to calculate EI deductions in Canada for each pay period

Once you know which earnings are insurable, the calculation is straightforward. Multiply the employee's insurable earnings for that pay period by the current employee EI premium rate.

EI deduction = insurable earnings for the pay period x employee EI premium rate

The employee premium rate and the maximum insurable earnings are set by the CRA every year and can change on January 1. For example, if the employee rate is 1.66% and an employee earns $2,000 of insurable earnings in a pay period, the deduction is $33.20. You must confirm the actual rate for the year you are processing.

The employer also pays a contribution. For most Canadian employers, it is 1.4 times the employee's premium. That amount is an employer expense, not a deduction from the employee's pay. In Quebec, employers also have obligations under the Quebec Parental Insurance Plan, which is separate from EI.

Here is what you need to gather for any pay period:

Remember that the maximum applies to insurable earnings, not to total gross income. Non-insurable benefits do not count toward the maximum. If an employee is close to the ceiling, you deduct EI only on the amount still within the limit. An automated system should track the cumulative total for you. Canadian payroll software, such as Awditify's small business platform, tracks these values automatically, and the payroll reports show the year-to-date amounts per employee.

EI deduction example: one pay run, three employees

Here is a concrete scenario. A 12-person precision machining shop in Kitchener is processing the second last pay period of the year. The bookkeeper needs to calculate EI for three different employees. For this illustration, assume the employee EI rate is 1.66% and the maximum insurable earnings is $63,500. These are example numbers, not a statement about the current year. Check the CRA rates page before running a real payroll.

Here is how each calculation works:

• Estimator: $4,500 x 1.66% = $74.70.
• Warehouse worker: $1,350 x 1.66% = $22.41.
• Production manager: before this pay period, the manager has accumulated $63,200 in insurable earnings. With a maximum of $63,500, only $300 of the current $5,000 is insurable. The EI deduction is $300 x 1.66% = $4.98.

If the bookkeeper had multiplied $5,000 by 1.66%, they would have over-deducted. The employee would eventually get a refund at tax time, but the remittance would not match the CRA's expectation. This is why the annual maximum matters as much as the rate.

The same calculation method applies to a machine shop, a CPA firm, a municipality, or a small retail business. The rate and maximum change, but the process does not. Until the 2026 rates are published, use the CRA's current numbers for real runs.

Manual versus automated EI calculations

Manual EI calculations work, but they have a hidden cost. You are responsible for updating the rate every January, tracking each employee's cumulative insurable earnings, and stopping the deduction at the right point. If you use last year's rate by accident, the underpayment will show up later with interest.

An automated workflow does the repetitive work. Awditify's Canadian payroll module calculates EI, CPP, and income tax in the same pay run, applies current CRA rates, and keeps an audit trail for every period. The system can flag when an employee is close to the maximum, so the decision is not left to memory.

Here is how the two approaches compare:

The difference is not always visible on a single pay stub. It shows up over a full year, especially when employees receive bonuses, work overtime, or leave mid-year. A manual process has to be right every single time. An automated process needs good data going in and a timely review going out.

When to stop deducting EI and how to remit

Stop deducting EI once an employee's insurable earnings with your business reach the annual maximum. Do not stop earlier because they had another employer earlier in the year. The new employer does not know that history, and any overpayment is handled through the employee's personal tax return.

Before the maximum, the employee sees an EI deduction on every paycheque. After the maximum, the deduction disappears and net pay increases. This is not an error. It is the result of the annual ceiling and it can surprise employees who do not track their year-to-date amounts.

You remit EI with CPP, income tax, and other source deductions to the CRA. The remittance frequency is based on your average monthly withholding amount. Larger employers remit more often, and missing a deadline triggers interest and penalties. A small missed remittance can quickly become a bigger issue if the CRA starts asking questions.

When an employee leaves, you need to issue a Record of Employment within the required timeframe. The ROE reports the same insurable earnings used for EI deductions, so the payroll records and the ROE should tell the same story. Service Canada uses the ROE to calculate benefits, and any mismatch can slow down an employee's claim.

Common EI calculation mistakes to avoid

These issues show up often in payroll reviews:

• Using a stale rate: The EI rate changes annually. Check the CRA rate page before the first payroll in January.
• Forgetting the annual maximum: Over-deducting after the ceiling is easy to do. Track cumulative insurable earnings for each employee.
• Excluding bonuses and commissions: EI is calculated on most cash compensation, not just base salary. A bonus can also push an employee closer to the maximum.
• Deducting EI on non-insurable payments: Some benefits, such as employer pension contributions, do not count. Verify the payment before processing.
• Mixing up employee and employer portions: The employee portion is a deduction, and the employer portion is an extra expense. Both are remitted to the CRA.
• Skipping reconciliation: Compare your payroll register to the remittance before you submit it. A mismatch can lead to interest and penalties.

These are not just spreadsheet problems. They come down to whether you can explain your numbers when the CRA reviews the account. A clean audit trail is worth more than a perfectly balanced spreadsheet, because it shows whether the calculation was based on the right inputs.

How EI fits into the full payroll remittance

EI is one of three federal source deductions you have to reconcile. CPP has its own exemption and contribution rates, and income tax depends on the TD1 forms the employee files. You remit all three to the CRA at the same time, so a mistake in any one of them can make the remittance line not tie out. This is why many Canadian bookkeepers treat EI as part of a single payroll calculation, not as a standalone number.

For example, an employee with a $2,000 paycheque might have a small EI deduction, a larger CPP deduction, and income tax that varies by province. The total remitted to CRA is the sum of all three. If the EI portion is wrong but the other two are right, the remittance total will still not match the payroll register.

At the end of the year, the employee's EI deduction appears in box 18 on the T4. The employer's share is reported separately through the payroll remittance records. If the deductions are wrong, the T4 will be wrong too.

The CPP side has its own rates and exemptions. The 2026 CPP changes guide covers the pension side if you need a refresh before you reconcile both deductions in the same period.

Calculating EI on bonuses and variable pay

Bonuses, commissions, and retroactive payments are insurable earnings. If you calculate manually, include them in the pay period where they are paid. A bonus can push an employee over the annual maximum faster than you expect. If an employee receives a large bonus in December, the EI deduction may be much lower than the one in January because the maximum was reached months ago.

Retroactive pay is handled differently from a normal bonus in some situations. The EI premium is generally calculated on the total payment in the period it is paid, not by recalculating each prior period. The exact treatment depends on the type of payment and the CRA rules, so verify it with the payroll calculator or a payroll specialist. What you do not want is a manual spreadsheet that treats all retro pay as if it were regular salary from January.

How to verify your EI calculation with CRA tools

The CRA's Payroll Deductions Online Calculator is free and widely used. You enter the province, the pay period, the income, and the calculation type, and it gives you the EI, CPP, and income tax amounts. For a small payroll run, it is a reliable cross-check.

Use it once for each new employee and once more when the CRA publishes new rates. Compare the calculator result to your payroll register. If they do not match, figure out why before you remit. The calculator cannot handle every unusual payment, but it handles the standard payroll scenarios well.

Paper payroll deduction tables still work, but they require you to interpolate between rows and apply the maximum yourself. The online calculator reduces that manual step. For a bookkeeper who manages multiple clients, the calculator is a faster check than flipping through a paper table.

How payroll systems track EI deductions

You can run payroll with paper tables, a spreadsheet, or a Canadian payroll system. The main difference is how the annual maximum is tracked. With paper tables, you have to check each employee's year-to-date amount before every run. With a payroll system, the running total is updated after each pay period, and the calculation stops when the ceiling is reached.

A payroll system also keeps the remittance amounts in the same ledger as the salary expense. That makes reconciliation easier because you are not moving numbers between a spreadsheet and an accounting file. The audit trail shows the rate, the insurable earnings, and the resulting deduction for every pay period.

For an existing Awditify user, the payroll accrual tracking guide walks through recording the related liability in the general ledger. This is where the term deduction becomes a balance sheet item rather than just a number on a pay stub.

Frequently asked questions

How do I calculate EI deductions in Canada?

Multiply the employee's insurable earnings for the pay period by the current employee EI premium rate. Most cash compensation, including salary, commissions, and bonuses, counts as insurable earnings. Once the employee's cumulative insurable earnings reach the annual maximum, stop deducting. Always verify the current rate and maximum on the CRA website before you run payroll.

What is the maximum insurable earnings for EI in 2026?

The CRA publishes the maximum insurable earnings and the premium rate before the start of the calendar year. The exact 2026 figure will be on CRA's rates page. Do not rely on a rate from memory. If an employee has multiple employers during the year, each employer tracks the maximum separately, and the employee can claim a refund for any overpayment on their tax return.

Do employers pay EI on top of the employee deduction?

Yes. Most Canadian employers pay 1.4 times the employee's EI premium as their own contribution. This amount is an employer expense and does not reduce the employee's take-home pay. In Quebec, there is also a separate Quebec Parental Insurance Plan obligation. Both the employee and employer portions need to be included in the CRA remittance.

When should I stop deducting EI from an employee's pay?

Stop once the employee's insurable earnings with your business reach the annual maximum. Do not stop based on earnings from a previous employer. An employee who has reached the maximum will not owe EI for the rest of the year, but you still need to track CPP and income tax deductions.

Can payroll software calculate EI deductions for me?

Yes, and it should track the annual maximum automatically. Awditify's payroll features calculate EI, CPP, and income tax for Canadian employers, using current CRA rates as part of the payroll run. This reduces the risk of applying a stale rate or missing the maximum. Look for a system built for Canadian payroll, because the rules are country-specific.

What to do next

EI deductions are simple to compute and easy to get wrong because the inputs change every year. The rate, the maximum insurable earnings, and the definition of insurable earnings all need to be verified. Start with the current CRA numbers, track each employee's cumulative insurable earnings, and reconcile your remittance before the deadline.

If you want to reduce the manual work, Awditify's small business platform calculates EI, CPP, and income tax automatically and keeps a clear audit trail for each pay run. Once EI is under control, the next step is to review the full Canadian Payroll Guide to see how the pieces fit together.