Payroll Remittance Deadlines for Ontario Employers

A payroll run is not finished when employees receive their pay. Employers must also send the required deductions and employer contributions to the Canada Revenue Agency on time. Missing payroll remittance deadlines can lead to penalties, interest, and unnecessary pressure on a business that is otherwise managing payroll responsibly.

For Ontario employers, the right deadline depends on the remitter type assigned by the CRA. That category is based largely on the average monthly withholding amount, not simply the number of employees on staff. Understanding the schedule, setting aside funds promptly, and reconciling each pay period can protect your business from expensive mistakes.

What a Payroll Remittance Includes

Each time you process payroll, you withhold amounts from employee pay and may owe employer contributions. These funds do not belong in the business operating account for long. They must be tracked separately and remitted to the CRA according to your assigned schedule.

A typical remittance includes federal and provincial income tax withheld from employee wages, Canada Pension Plan contributions, including CPP2 where applicable, and Employment Insurance premiums. Employers also contribute their required share of CPP and pay Employment Insurance premiums at the employer rate.

The amount that reaches the CRA is therefore higher than the deductions shown on an employee's pay stub. A common error for new employers is setting aside only the tax and deductions withheld from employees, then discovering too late that the employer CPP and EI amounts are still due.

Payroll Remittance Deadlines by Remitter Type

The CRA assigns most employers a remitter type when they open a payroll program account. Your remitter type determines how often you must make payroll remittances. Always confirm your current classification through your CRA business account or with your accounting professional, particularly after payroll grows or changes significantly.

Regular remitters

Most small businesses start as regular remitters. Under this schedule, deductions and contributions for a calendar month are generally due by the 15th day of the following month. For example, payroll deductions from April are typically due by May 15.

This schedule can feel manageable, but it creates a cash-flow risk if the funds are spent before the due date. Treat payroll withholdings as restricted funds. Moving them to a separate account after every payroll run is often the simplest way to ensure the money is available.

Quarterly remitters

Some eligible employers may remit quarterly rather than monthly. To qualify, an employer must meet the CRA's criteria, including a strong history of compliance and a low average monthly withholding amount. Quarterly remittances are generally due on the 15th day of the month following the end of each calendar quarter.

A quarterly schedule reduces the number of payments, but it does not reduce the need for careful records. In fact, because the payment can represent three months of deductions and contributions, businesses need disciplined cash management throughout the quarter.

Accelerated remitters

Businesses with larger average monthly withholding amounts may be assigned an accelerated schedule. Threshold 1 remitters generally make two payments each month, with due dates around the 15th and the last day of the month. Threshold 2 remitters generally remit more frequently, with payments due within three working days after designated payroll periods.

The exact rules and timing matter greatly for accelerated remitters. A business that has recently hired quickly, added a second location, or expanded its workforce can move into a new category. Do not assume last year's payment schedule still applies.

When a Due Date Falls on a Weekend or Holiday

When a payroll remittance due date falls on a Saturday, Sunday, or public holiday recognized by the CRA, the payment is generally due on the next business day. Even so, leaving payment until the last possible day is rarely wise.

Bank processing times, payment method cutoffs, and account-entry errors can all create a late-payment issue. Schedule the payment early enough to allow time to correct a rejected transaction. Keep confirmation records showing the payment amount, date, and reference details.

Late Payroll Remittances Are Costly

The CRA can apply penalties when payroll deductions are remitted late or not remitted in full. The penalty may increase depending on how late the payment is and whether late remittances happen repeatedly. Interest can also accumulate on outstanding balances.

The financial cost is only part of the problem. Repeated payroll issues can trigger CRA attention, create cleanup work at year-end, and distract owners from serving customers and running their business. For corporations, directors may also face personal liability in certain circumstances for unremitted payroll source deductions.

An honest mistake does not need to become a recurring issue. If you discover that a remittance was missed, calculate the amount, make the payment as soon as possible, and document what caused the problem. Then adjust the process that allowed it to happen, whether that means clearer approval steps, better payroll software settings, or outside support.

Build a Reliable Remittance Process

The most dependable payroll process is simple enough to follow every pay period. It should not rely on memory, a last-minute calendar check, or one person being available at all times.

A practical workflow includes four controls:

• Record gross wages, deductions, employer contributions, and net pay for every payroll run.

• Transfer the full remittance amount to a separate payroll tax account immediately after processing payroll.

• Reconcile payroll reports to the amount scheduled for CRA payment before submitting the remittance.

• Maintain a calendar with payment due dates, statutory holidays, and year-end filing tasks.

Business owners should also review the payroll liability balance regularly. If your bookkeeping shows a growing payroll liability after payments have supposedly been made, investigate promptly. The issue may be a missed remittance, a payment posted to the wrong period, or a bookkeeping entry that needs correction.

Remittance Deadlines and T4 Filing Are Different

Payroll remittances are ongoing payments throughout the year. T4 slips and the T4 Summary are annual reporting requirements. They are related, but they have different deadlines and different consequences if missed.

Employers generally need to file T4 information returns and provide employee T4 slips by the last day of February following the calendar year. The total deductions and contributions reported on the T4 Summary should reconcile with the payroll remittances made during the year.

This is why monthly or per-pay-period reconciliation matters. Waiting until February to find a mismatch can leave little time to correct payroll records, investigate CRA account balances, or issue amended slips. A clean year-end begins with accurate payroll records in January, not with a rushed review at tax filing time.

Common Mistakes Small Employers Can Avoid

Many late remittances start with avoidable administrative gaps. A business owner may pay staff from one account, cover expenses from another, and lose visibility over the total amount owed to the CRA. Or an employee's status, pay rate, taxable benefit, or vacation pay may be entered incorrectly, causing the remittance calculation to be wrong.

Classifying workers incorrectly can also create payroll exposure. A contractor is not automatically an independent contractor because the business calls them one or pays them by invoice. Worker status depends on the actual working relationship. If there is uncertainty, seek advice before building a payroll process around an assumption.

Another issue is relying on old information. CPP limits, EI rates, and CRA requirements can change. Employers should use current payroll calculations and verify their remitter type periodically. This is especially relevant for startups and growing businesses whose payroll obligations can change faster than their internal processes.

When Professional Payroll Support Makes Sense

Outsourcing payroll administration does not remove an employer's responsibility to remit and report correctly, but it can provide a more controlled process. It is especially helpful when a business has variable hours, commissions, taxable benefits, multiple pay frequencies, or employees joining and leaving throughout the year.

For businesses in London, Chatham, and surrounding Ontario communities, a local accounting partner can help establish payroll accounts, calculate deductions, manage remittances, and prepare year-end T4 reporting. The value is not just time saved. It is knowing that payroll obligations are being monitored before a missed deadline turns into a penalty.

Payroll compliance works best when it becomes a routine, not a monthly emergency. Set aside the funds with each payroll run, confirm your CRA remitter schedule, and ask for support before growth makes a simple process more complicated.