T5018 Slips: The Reporting Obligation Ottawa Construction Firms Forget

Ottawa runs on trades. Renovations in the Glebe, infill in Westboro, federal fit-outs downtown, and a long chain of general contractors who subcontract almost everything. If more than half of your business income comes from construction, you have an information return obligation most other businesses do not, and the CRA created it specifically to see through that chain.

It is the T5018, and it is the reporting requirement I most often find has never been filed at all.

Who has to file

The CRA’s guidance on the T5018 slip sets three conditions, all of which must apply:

1. More than 50 percent of your business income comes from construction activities. The CRA’s phrasing is that construction must be your primary source of business income. Its own example is a natural gas company that builds a great deal of pipeline: the principal business is gas transmission, not construction, so it is outside the system.
2. You paid a Canadian resident subcontractor for construction services, performed inside or outside Canada.
3. Total payments to that subcontractor in the reporting period exceeded $500, excluding GST/HST.

Note what is not in that list. There is no size threshold. A sole proprietor framing houses who pays two subcontractors is inside the rules on exactly the same terms as a company with fifty crews.

“Construction activities” is broad. The CRA’s list runs from excavating and form work through drywalling, plumbing, electrical, glazing, painting and hardwood flooring, and includes heavy equipment rental when an operator is supplied. Equipment rental without an operator is just rental.

What goes on the slip, and what stays off it

The figure you report is the total of contract payments to that subcontractor in the period, and “payment” is wider than a cheque. The CRA asks for amounts paid or credited, whether by cheque, cash, barter, or offset against something the subcontractor owed you. Netting an invoice against materials you supplied does not take the payment off the return, it just makes it harder to find in your records.

Three things stay off:

• Payments for goods only. A yard that delivered lumber and did no construction work is not a T5018 recipient. Where one invoice covers labour and materials together, the whole thing is a contract payment.
• Cheques written jointly to several subcontractors, the arrangement used to make sure sub-trades get paid and liens do not get registered.
• Payments to non-residents, which belong on a T4A-NR.

Then the reverse case, which the decision tree at the end of this article does not resolve by itself. If construction is not your primary source of business income you are outside the T5018 system, but the CRA’s guidance routes those payments to a T4A rather than to nothing at all. Falling under 50 percent construction ends one obligation and may start another.

If you would rather not produce slips, the CRA will accept a listing or printout instead: line by line, in column format, carrying every field the slip would have carried, plus the total paid to each subcontractor, the number of subcontractors, and an authorised signature.

The deadline nobody remembers

T5018 returns are due six months after the end of the reporting period, and the reporting period is whichever of the calendar year or your fiscal period you chose. The CRA sets this out in its when to file information returns table, alongside the far more familiar end-of-February date for T4s and T5s.

Six months is unusual, and it is the reason this slip falls through the cracks. Your payroll year end work happens in February. Your T5018 deadline does not land anywhere near it. If you chose the calendar year as your reporting period, the return is due at the end of June, months after everything else on the year end slip calendar has been dealt with.

You file the slips with a T5018 Summary, which reports the total number of slips and the total payments. The form itself is available in fillable PDF for paper filing, though electronic filing is the norm and is mandatory above a threshold.

What late filing costs

Information return penalties are per return, calculated on the number of slips filed late, with a minimum of $100. That scales quickly for a contractor with forty subcontractors and several years of non-filing.

There is a second penalty aimed squarely at this industry. The CRA states that a contractor who plans with subcontractors to avoid tax by concealing underground activity could face criminal prosecution, with fines and penalties of up to 200 percent of the tax avoided. That is not the ordinary late filing regime. It is the reason the contract payment reporting system exists.

If several years are already missed, the route that relieves penalties is the Voluntary Disclosures Program, and its central condition is that the disclosure be voluntary. It closes the moment the CRA contacts you about the very thing you were going to disclose. Coming forward first is not a gesture of goodwill, it is the entire mechanism.

Why the CRA cares, and why you should

The T5018 is a matching tool. The CRA compares what you reported paying a subcontractor against what that subcontractor reported earning. Gaps get followed up.

That is a reason to file, but it is also a reason to be accurate. If your records treat a payment as a subcontract when it was really wages, or a slip carries the wrong business number, you are generating a mismatch on somebody else’s file with your name attached to it. Clean records and clean slips are the same project, which is where a disciplined monthly close earns its cost.

The bigger risk sitting underneath

Filing a T5018 is a statement that the person you paid was a subcontractor. If the CRA later concludes they were an employee, you owe unremitted CPP, EI and income tax, plus penalties and interest, and the slip you filed is evidence of how you characterised the relationship.

The construction sector is the CRA’s most audited area for worker classification. Control, ownership of tools, chance of profit and risk of loss are the tests, and they are applied to the actual working relationship rather than to what the contract says. The CRA’s guide Employee or self-employed? is the working reference, and I have set out how the factors interact in employee or contractor.

In Ontario there is a second, independent consequence. The WSIB’s expanded compulsory coverage in the construction industry brings independent operators, sole proprietors and some partners and executive officers into mandatory coverage. A misclassified worker can therefore be a CRA problem and a WSIB problem at once, and the WSIB clearance process is where it tends to surface first. The registration mechanics are in WSIB for small employers.

Where to start

Is more than 50% of your business income from construction?
│
├── No  → No T5018 obligation. The CRA will still accept a
│         return if you choose to file one.
│
└── Yes
    ├── Did you pay any Canadian resident subcontractor
    │   more than $500 in the period, excluding GST/HST?
    │   │
    │   ├── No  → Nothing to file this period. Recheck yearly.
    │   │
    │   └── Yes → File a T5018 slip for each such
    │             subcontractor plus a T5018 Summary,
    │             within 6 months of your period end.
    │
    └── For each of those subcontractors, ask separately:
        would the CRA agree this person is not an employee?
        If you are not confident, resolve that BEFORE filing.

If you run a construction business in Ottawa and have never filed a T5018, you are not unusual and you are also not fine. Send me a list of subcontractor payments for the last two years and your fiscal year end. I will tell you which slips are owed, what the exposure looks like, and whether any of those workers would survive a classification review. Get in touch.