AI agents for business finance: what they can and can't do
What AI agents can do in bookkeeping, close, collections and compliance today, where a person must stay in charge, and how to judge a product.
The short answer
A Canadian employer deducts CPP contributions, EI premiums and income tax from pay, adds its own CPP and EI share, and remits the total to the CRA. Most small employers are regular remitters who pay by the 15th of the month after the employees were paid, while some qualify to remit quarterly and larger ones remit more often. T4 slips and the summary are due by the last day of February, and late remittances attract penalties.
What you remit
Each pay run creates three amounts to send to the CRA: income tax withheld from the employee, CPP contributions (the employee's share plus an equal employer share) and EI premiums (the employee's share plus the employer's share, normally 1.4 times the employee amount). The CRA's employers' guide, T4001, explains how to calculate each and when they are due. You need a payroll program account, which is part of your business number, before your first remittance.
These amounts are held in trust for the Crown. The CRA can hold directors jointly liable for source deductions the corporation failed to remit, so this is one area where an owner cannot assume the accountant has it covered.
Your remitter type and due dates
The CRA assigns a remitter type based on your average monthly withholding amount from two calendar years earlier.
| Remitter type | Who it usually covers | Due date |
|---|---|---|
| Regular | Most small employers, including new ones | By the 15th of the month after the month you paid employees |
| Quarterly | Eligible small employers with a low average monthly withholding and a perfect compliance history, who the CRA has told they qualify | By the 15th of the month after each quarter |
| Accelerated threshold 1 | Larger average monthly withholding | Up to twice a month |
| Accelerated threshold 2 | The largest employers | Up to four times a month |
If a due date falls on a weekend or public holiday, the remittance is on time if received by the next business day. The CRA tells you when your type changes, and an employer should not change frequency on its own.
Year-end and penalties
- File T4 slips and the T4 Summary, and give employees their slips, by the last day of February after the calendar year.
- Issue a record of employment when an employee has an interruption of earnings, within the time limits Service Canada sets.
- Keep payroll records for six years from the end of the year they relate to, as with other business records.
The T4001 guide sets out a graduated penalty for late remittances, rising from 3% for a remittance one to three days late to 10% for one more than seven days late or not made at all, with higher penalties for repeated failures in the same year. Interest runs on the unpaid amount. Failing to deduct in the first place has its own penalty.
What an AI agent can do
- Hold your remitter type and the due date for each pay period in the obligations register.
- Calculate the remittance from each payroll run, including the employer share, and show the working.
- Ring-fence remittance amounts in the cash forecast so they are not spent.
- Remind the owner five business days before each due date and confirm when the payment has gone.
- Reconcile remittances to payroll records before T4s are prepared, and flag any difference.
- Note any CRA letter that changes your remitter type and update the schedule once a person confirms it.
What stays with a person
Whether a worker is an employee or a self-employed contractor, how taxable benefits are treated and what happens in a cash shortfall are decisions for the owner, with advice. An agent should never defer a source deduction remittance to cover another bill; it should put the shortfall in front of the owner with the penalty and the director's exposure stated plainly.
Worked example
Example only. A landscaping company in Calgary is a regular remitter. In May it pays six seasonal staff total gross wages of C$38,000. Payroll shows C$5,700 of income tax withheld, C$4,100 of CPP (both shares) and C$1,500 of EI (both shares), for a remittance of C$11,300. The agent sets the payment due by 15 June and moves C$11,300 to the restricted line in the forecast. It reminds the owner on 9 June. The owner approves the payment on 10 June and the agent records the confirmation number against May's payroll.
Getting set up
A new employer should open its payroll account before the first pay date, collect a TD1 form from each employee, and check whether provincial forms apply. The agent can hold that checklist and refuse to mark the first pay run ready until each item is filed. Quebec employers deal with Revenu Québec for provincial tax and QPP, which adds a second set of dates, and the agent should hold both schedules side by side.
Where Pryme fits
The Pryme Compliance agent keeps each remittance date with its own clock, and the Finance agent holds the cash position and releases payments only below the line you set. Payroll runs from the same account. Above any ceiling, a person decides. For the limits of automation, read AI agents for business finance.
Questions people ask
When are CRA payroll remittances due?
For most small employers, by the 15th of the month after employees were paid. Quarterly and accelerated remitters have different dates, set by the CRA.
Can I choose to remit quarterly?
Only if the CRA tells you that you qualify, based on a low average monthly withholding and a perfect compliance record.
What is the penalty for a late remittance?
The CRA applies a graduated penalty from 3% to 10% depending on how late it is, with higher penalties for repeated failures, plus interest.
When are T4 slips due?
By the last day of February after the calendar year they relate to, both to the CRA and to employees.
Sources
- CRA: T4001 Employers' Guide, Payroll Deductions and Remittances · accessed Oct 2026
- CRA: Payroll · accessed Oct 2026
- CRA: Keeping records · accessed Oct 2026
This article is general information, not financial, legal or tax advice. Products described are provided under the terms on this site and are subject to regulation and eligibility.