Does CRA form T2125 change how you report home workshop income?

What to take away

• Home workshop income tax reporting means filing CRA form T2125 with your personal return and claiming only the business share of shop costs.
• Business-use-of-home claims cover garage or basement space, utilities and insurance, but never the full house.
• Tools and materials are deducted on their own lines, separate from the space claim.
• Garage space percentage is area used for business divided by total finished area, and it caps what you can claim.
• GST/HST registration becomes mandatory once small supplier revenue passes the threshold, and filing follows the CRA return process.
• Keep receipts, a logbook and a floor sketch, because the CRA can ask for them years later.

What T2125 is and who files it for home workshop income

CRA form T2125, the Statement of Business or Professional Activities, is the form that turns workshop sales into a tax return. You attach it to your T1. There is no separate shop return.

If you sell cutting boards, weld gates, repair small engines or resell tools from a garage in Ontario or a basement in Alberta, you are self-employed for that activity. The form is where you state gross sales, then subtract costs.

You file it when the activity is carried on with a reasonable expectation of profit. A hobby that never earns anything is not a business, and the CRA can reassess a claim built on one.

The form itself is published on the CRA site as the T2125 Statement of Business or Professional Activities. Download it, or use certified tax software that reproduces it.

Part 1 covers identification and fiscal period. Part 2 covers income. Part 3 covers expenses. Later parts handle motor vehicles, and the business-use-of-home calculation sits in its own area.

A sole proprietor files one copy. Partners each file their own share. A corporation does not use T2125 at all, which is one reason some makers incorporate once revenue grows.

You do not need to register a business name to file. A name registration in your province is separate from the tax filing, and many makers operate under their own name for years.

Starting to take money for work you already do is the trigger. The CRA's Starting a business page walks through registration, accounts and the first-year obligations.

How business-use-of-home claims work for a garage or basement shop

Business-use-of-home claims let you write off part of the cost of running the space your shop occupies. The claim is a percentage of eligible household costs, not a flat amount.

Eligible costs include heat, electricity, home insurance, property tax, mortgage interest and rent. They do not include mortgage principal, and they do not include the full cost of the house.

A detached garage is usually simpler than a basement. Its costs can often be identified directly: a separate hydro meter, its own insurance rider, or a clearly separate structure.

A basement shop shares heat and light with the house. You apportion those shared costs by the same business percentage you use for floor area.

The claim cannot create a rental loss for the space. If your expenses exceed your workshop income, the excess generally carries forward rather than reducing tax on your salary.

Your principal residence exemption is the other caution. A space used mainly for business can affect the exemption on part of the home, so a workshop that is clearly secondary is safer.

Insurance deserves its own check. A home policy may not cover commercial tools or customer property, and the article on whether homeowners insurance cover workshop tools sets out what a rider usually adds.

Reporting workshop income and expenses such as tools and materials

Workshop income and expense reporting starts with gross sales. That means everything you were paid for finished work, repairs, lessons and tool resale in the fiscal period.

Cash jobs count. So do e-transfers, card payments through a marketplace, and barter where you received something of value for your work.

Expenses split into two groups: the cost of goods and the cost of running the shop. Lumber, resin, steel, abrasives and finishes are cost of goods, deducted as you use them.

Tools are different. A small hand tool is usually a current expense. A large machine such as a cabinet saw or a mill is a capital asset, claimed through capital cost allowance over several years.

Keep the receipt for every machine, and record the date it went into service. Capital cost allowance classes determine the rate, and the half-year rule applies in the year of purchase.

Vehicle costs are claimed separately on the form, by business kilometres over total kilometres. A truck used for deliveries and material runs needs a logbook, not an estimate.

Subcontracting, sharpening services, software subscriptions, web hosting and marketplace fees are all deductible. So is a portion of your home internet and phone if you use them for orders.

Set aside the tax as you earn it. A maker who invoices steadily through the year can owe a large balance in April, plus instalments in the following year.

The CRA groups these obligations under its Business taxes pages, which cover self-employment income, payroll and GST/HST in one place.

Calculating the garage space percentage used for business

Garage space percentage calculation is arithmetic, but the choice of denominator matters. Divide the area used for business by the total finished area of the home.

A 400 square foot double garage on a 2,000 square foot house is 20 percent. If half the garage is storage for household goods, the business share is 10 percent.

Use finished area, not the lot. A detached garage still counts in the denominator if it is part of the property you occupy.

Measure once and sketch the floor plan. A simple drawing with dimensions, kept with your records, answers the question faster than an argument.

Apply the same percentage to shared costs. If the shop is 12 percent of the home, 12 percent of heat, hydro and insurance is the starting point for the claim.

Direct costs can be claimed at 100 percent if they serve only the shop. A dedicated shop heater, a separate meter or a shop-only insurance rider falls into that group.

The percentage is not fixed forever. If you convert a storage bay into a finishing room, recalculate and note the change with the date.

Running a shop also changes what the space costs you month to month. The breakdown in the article on the real cost of a home workshop is useful when you set your rates.

GST/HST registration and filing when workshop sales grow

GST/HST filing for workshop income begins with registration. You must register once your revenue from taxable supplies passes the small supplier threshold over four consecutive calendar quarters.

The threshold applies to your total business revenue, not to one product line. Tool resale counts, and so do sales through a marketplace that collects tax on your behalf.

Voluntary registration is allowed below the threshold. It lets you claim input tax credits on tools, materials and shop equipment, which suits a maker buying a lot of stock.

Once registered, you charge GST/HST based on the buyer's province. Ontario, the Atlantic provinces and most of Quebec fall under HST, while Alberta and the territories have no provincial part.

Zero-rated exports and sales to status First Nations buyers have their own rules. Get these wrong and the correction costs more than the original filing.

Filing frequency depends on revenue. Small businesses usually file annually or quarterly, and the CRA's guide on how to file your GST/HST return covers the methods and deadlines.

Keep the GST/HST you collect separate from operating cash. It is money held for the government, and spending it creates a problem you cannot deduct.

Records, receipts and CRA guidance to keep on hand

CRA records receipts and supporting documents for six years from the end of the tax year they relate to. Digital copies are accepted if they are legible and complete.

Keep more than receipts. A logbook of hours, a job list, invoices, bank statements and the floor sketch together tell the story of a real business.

Photograph machines and their serial plates when you buy them. The article on home workshop costs buying explains why a dated photo set is worth the ten minutes it takes.

Store receipts by year and by category. A folder per year, with subfolders for materials, tools, vehicle and home costs, makes an audit a reading exercise rather than a search.

Keep the CRA's own guidance close. The CRA taxes hub links the forms, guides and online mail service you will need.

Set up CRA online mail so notices arrive in your account rather than by post. A reassessment letter that sits unread for a month is harder to answer.

• T2125 completed and attached to the T1 return
• Gross sales reconciled to bank deposits and platform statements
• Materials and tool receipts filed by year
• Capital cost allowance schedule updated with new machines
• Garage or basement floor sketch with the business percentage noted
• Vehicle logbook totalled for the year
• GST/HST returns filed and amounts remitted

Common T2125 mistakes for home-based workshop income

Most problems come from mixing personal and business money. A separate account, even a second chequing account, removes the guesswork at filing time.

Claiming the whole garage is the second common error. If the household still parks a car there, the business share is a fraction, and the CRA expects the fraction to reflect actual use.

Ignoring a machine's capital cost is another. Deducting a $4,000 saw as a current expense in one year overstates the claim and invites a reassessment.

Forgetting to register for GST/HST after a good year is expensive. The tax you failed to charge comes out of your own pocket, plus interest.

No records is the mistake that ends the argument. Without receipts, a legitimate claim is disallowed, and the tax is recalculated on the income alone.

Finally, many makers underprice their work because they never counted the space, the power or the consumables. The list of budget mistakes that repeat in home shops is a useful check before you quote the next job.

If your costs are climbing faster than your prices, the article on running workshop costs covers the expenses that catch new makers out.

Common questions

Do I have to file T2125 if I only sell a few pieces a year? If you are carrying on a business with a reasonable expectation of profit, yes. Small revenue does not remove the filing requirement, though it may keep you under the GST/HST threshold.

Can I claim my whole garage as business use of home? Only the portion used for the business. If the household still stores items or parks a vehicle there, the claim must reflect the business share.

How do I calculate the garage space percentage? Divide the area used for the shop by the total finished area of the home, then apply that percentage to shared costs such as heat, hydro and insurance.

When must I register for GST/HST? Once your revenue from taxable supplies passes the small supplier threshold over four consecutive calendar quarters. You can also register voluntarily and claim input tax credits.

How long should I keep workshop receipts? Six years from the end of the tax year they relate to. Keep them by year and category, and keep the floor sketch and logbook with them.

Are tools deducted all at once or over time? Small hand tools are usually current expenses. Larger machines are capital assets claimed through capital cost allowance over several years.