How to File Your Self-Employed Taxes at the Last Minute (a Realistic Weekend Plan)

The June 15 filing deadline is close, your books are not done, and panic is not a filing strategy. The good news: a sole proprietor return is mostly one form, and you do not need perfect books to file an honest, defensible return. You need income totals, the big expense categories, and a few hours of focus. Here is the order of operations.

Quick Answer

Work in this order: (1) total your business income from bank deposits and platform summaries, (2) pull slips with CRA Auto-fill, (3) claim the big expense categories first (home office, vehicle, phone, software, fees), (4) skip optional complexity like CCA if you are out of time, and (5) file through NETFILE-certified software even if it is not perfect. A filed return can be adjusted later; the late filing penalty stops the day you file.

Step 1: Nail down income first (Saturday morning)

CRA cares far more about unreported income than about an imperfect expense claim, so income is where your accuracy budget goes. Three sources, in order:

Platform summaries. Uber, DoorDash, Etsy, eBay, Airbnb and the rest all publish annual earnings summaries, and since 2024 the platforms report your sales to CRA directly. Your numbers need to be consistent with theirs.
Slips. Log in to CRA My Account or use Auto-fill my return in your tax software to pull T4A and other slips filed under your SIN.
Bank deposits.Scan last year's statements for client payments and e-transfers that did not come through a platform or generate a slip.

If you are GST/HST registered, report income excluding the GST/HST you collected. That tax belongs on your GST/HST return, not your T2125.

Step 2: Claim the big expenses, not all the expenses (Saturday afternoon)

Under time pressure, chase the deductions that move the needle. For most freelancers and gig workers that means, roughly in order of size:

Home office: workspace square footage over home square footage, applied to rent or mortgage interest, utilities, and internet. One measurement, one percentage, big deduction.
Vehicle: business kilometres over total kilometres, applied to gas, insurance, repairs, and lease or loan interest. Reconstruct your business km estimate from your calendar and trip history if you did not keep a log, and write down how you got the number.
Phone and internet: the business-use share of your monthly bills.
Software, fees, and supplies: platform fees, payment processing, subscriptions, materials. Your statements have these as searchable recurring charges.
Meals: client and business meals are 50% deductible. Do not claim your regular lunches.

The full list of what is deductible is in our expense deductions guide, and if you want to know exactly where each total lands on the form, the T2125 line-by-line guide walks every box.

Step 3: Skip the optional complexity

Two things people burn hours on that can legitimately wait:

Capital cost allowance. CCA is optional. If sorting your laptop and camera into asset classes is the bottleneck, claim zero this year. The balance carries forward and nothing is lost.
Perfect receipt matching. File from statement totals you can defend, keep every record for six years, and tidy the books afterwards. Reasonable and supportable beats complete and late.

Step 4: File, then fix (Sunday)

Use any NETFILE-certified software and submit. If you owe and cannot pay everything today, file anyway: filing on time eliminates the late filing penalty, and payment can be sorted separately, including arrangements with CRA. If you later find a missed deduction or a wrong number, adjust the return through ReFILE or CRA My Account after your Notice of Assessment arrives.

One honest caveat: a rushed return is a return built from reconstruction instead of records. It works, but you only want to do it once.

Make next year boring

NorthOS sorts your transactions into the right T2125 categories as the year happens, pulls receipts from Google Drive, and tracks your GST/HST position. Next June, your return is an export instead of a weekend.

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Frequently asked questions

Can I file my T2125 without every receipt?

You can file using totals reconstructed from bank and credit card statements, but you must keep supporting records for six years in case CRA asks. Claim what you can support, skip what you cannot, and never invent round numbers. You can always adjust the return later if you find more receipts.

What if I make a mistake filing in a rush?

Returns can be corrected. After you get your Notice of Assessment, you can adjust online through ReFILE (in most tax software), through CRA My Account, or with a T1 adjustment request. A filed return with a fixable mistake beats an unfiled return every time, because the late filing penalty only stops when you file.

Do I have to claim capital cost allowance (CCA) this year?

No. CCA is a permissive deduction: you can claim any amount from zero up to the maximum. If working out asset classes is what is standing between you and filing on time, claim zero CCA this year. The undepreciated balance stays available for future years.

I am GST/HST registered. Do I report income with or without GST/HST?

Report your income on the T2125 excluding the GST/HST you collected. The GST/HST you collected belongs on your GST/HST return, not your income tax return. Mixing the two is one of the most common last-minute errors.

Where do I find my T4A and other slips quickly?

CRA My Account lists slips that have been filed under your SIN, and most NETFILE-certified software can pull them in automatically with the Auto-fill my return feature. Platform income (Uber, Etsy, eBay, DoorDash and others) usually has an annual summary you can download from the platform dashboard.

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