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 self-employed person in Canada can deduct a share of home costs only if the workspace is the principal place of business, or is used only for business and regularly to meet clients. The share is worked out on a reasonable basis, usually floor area, cut down further if the room is also used for personal life, and the claim cannot create or increase a business loss; anything unused carries forward to the next year (CRA, modified August 2026).
The two tests you must pass
The CRA sets the conditions on its business-use-of-home page for Form T2125, last modified 31 August 2026. You can claim if you meet one of these:
- the work space is your principal place of business; or
- you use the space only to earn business income, and you use it on a regular and ongoing basis to meet clients, customers or patients.
For most freelancers serving clients in Nigeria the first test is the relevant one. If you design, write, code or edit for a Lagos agency from a spare room in Mississauga, and you have no other office, that room is your principal place of business. Clients on video calls do not usually make the second test easier, because the CRA's wording is about meeting clients at the space.
These rules are for self-employed income reported on T2125. Employees working from home follow a different route on their employment income, which this article does not cover.
What you can include
| If you rent | If you own |
|---|---|
| A share of rent | A share of mortgage interest (not the capital repaid) |
| A share of heat, electricity and home insurance you pay | A share of heat, electricity, home insurance and property taxes |
| Cleaning supplies, by the same share | Cleaning supplies, by the same share |
| Costs that relate only to the workspace | Capital cost allowance on the business part of the home, with care (see below) |
Costs that are wholly for the business, such as a separate business phone line or software, are ordinary business expenses on their own lines of T2125 and are not split by floor area. The CRA says an expense you claim as business-use-of-home must not also appear elsewhere on the form.
Working out your share
The CRA asks for a reasonable basis, such as the area of the workspace divided by the area of the home. If the room is also used for personal life, you reduce it again by the hours: business hours per day divided by 24. If you only run the business for part of the week or year, reduce the claim to match.
Worked example
Example only, figures invented. Ada rents a two-bedroom flat in Ottawa of 900 square feet and uses a 90-square-foot bedroom only as her office, where she does all her work for clients in Nigeria. Her share is 90 ÷ 900 = 10%.
| Annual cost | Total paid | Business share at 10% |
|---|---|---|
| Rent | C$24,000 | C$2,400 |
| Electricity | C$900 | C$90 |
| Tenant insurance | C$300 | C$30 |
| Total | C$25,200 | C$2,520 |
If instead the room were a guest room she used for work 8 hours a day, the share would be 10% × 8 ÷ 24, or about 3.3%, so roughly C$840 on the same costs.
The limit: no loss from your home
The deduction cannot be more than your net business income before these expenses, and it cannot create or increase a business loss. Using the example, if Ada's net income from her Nigerian clients before home costs was only C$1,800 in her first year, she can deduct C$1,800 that year and carry the other C$720 forward to the next fiscal period, where the same conditions apply. This matters in a slow year, when a client in Nigeria pays late and your income dips.
A warning for homeowners
The CRA notes that if you claim capital cost allowance on the business part of your home and later sell it, capital gain and recapture rules apply to that part. Many homeowners therefore leave CCA out of the claim. Get advice before claiming it, because the effect shows up years later on a sale.
Situations Nigerian freelancers often ask about
- Working from a shared flat
- Use your share of the costs you actually pay, then apply the workspace share to that. Costs paid by flatmates are not yours to claim.
- Months spent working from Lagos
- If you spend part of the year working away from the Canadian home, reduce the claim for the period the space was not used for the business.
- A desk in the living room
- A corner of a shared room can count, but the hours-based reduction applies, and the space must still meet one of the two CRA tests.
- Starting the business mid-year
- Count only the months the business operated. The CRA says to reduce the claim if you run the business for only part of the year.
What to keep
- a simple floor plan with the room measurements;
- the lease or mortgage interest statement, utility bills and insurance invoices;
- a note of the hours the room is used for work, if it is shared; and
- your T2125 workings, kept for six years from the end of the tax year (CRA records guidance, modified August 2026).
Where Pryme fits
Clean separation between business and personal money makes a home office claim easier to back up. A Pryme Business Account, opened from Canada, keeps your Nigerian client income apart from household spending, and the Finance agent can help prepare categorised records for you to review. For the rest of the return, see self-employed tax on Nigerian client income and records for a CRA review.
Questions people ask
Can I claim home office expenses if I also work at a client's office?
Only if your home workspace still meets a CRA test: it is your principal place of business, or it is used only for business and regularly to meet clients. If most of your work happens elsewhere, the first test may fail.
Can I claim my whole internet bill?
Not usually. A home internet connection used for personal life too is split on a reasonable basis. Costs used wholly for the business go on their own T2125 lines.
What if my home office expenses are more than my income?
The excess cannot create or increase a business loss. It carries forward to the next fiscal period and can be used then under the same conditions.
Should I claim CCA on my home?
The CRA warns that claiming CCA on the business part of your home brings capital gain and recapture rules into play on a sale. Get advice before claiming it.
Sources
- CRA: Business-use-of-home expenses, Form T2125 (modified 31 Aug 2026) · accessed Oct 2026
- CRA: Where to keep your records, how long to keep them (modified 3 Aug 2026) · 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.