The Ultimate Self-Employed Tax Checklist for Canadians: What to Gather Before June 15 (Ottawa Edition)

Majdi Ibrahim

June 11, 2026⏱ 10 min read

By Majdi Ibrahim, CPA | Majdi Ibrahim, CPA Professional Corporation | Ottawa, Ontario

If you're self-employed in Canada — whether you're a freelancer, independent contractor, consultant, or sole proprietor — your 2025 tax return is due June 15, 2026. But there's a critical distinction many people miss: while your return is due June 15, any taxes you owe were due April 30, 2026. If you have a balance owing and haven't paid it, CRA interest has been accumulating since May 1st.

At Majdi Ibrahim, CPA Professional Corporation, we work with self-employed individuals, freelancers, and contractors across Ottawa every filing season. The most common problem we see isn't missing the deadline — it's showing up unprepared and leaving deductions on the table. This checklist fixes that.

Every filing season, I work with self-employed Canadians ranging from IT consultants and federal government contractors to tradespeople and healthcare professionals. The most common issue isn't hidden income — it's incomplete records, missed deductions, and uncertainty around GST/HST obligations. A little preparation before you file can make a significant difference in both your refund and your peace of mind.

Who This Checklist Is For

This checklist is designed for:

• Freelancers and independent contractors
• Consultants and coaches
• Sole proprietors and tradespeople
• Realtors and mortgage agents
• IT consultants and tech professionals
• Healthcare professionals in private practice
• Content creators and creative professionals
• Uber, Lyft, and delivery drivers
• Anyone else earning self-employment income in Canada

If any of the above describes you, keep reading — this checklist was written with your situation in mind.

At a Glance: Key Deadlines and What You'll Need

June 15, 2026 — Filing deadline for self-employed individuals and their spouses or common-law partners.

April 30, 2026 — Payment deadline. If you owe taxes, CRA interest applies from this date regardless of when you file.

What to gather: Personal identification, all business income records, receipts for deductible expenses, investment slips, GST/HST records, and CPP/RRSP documentation.

Ottawa residents: If you have an unpaid balance, filing sooner rather than later limits the interest you accumulate. A same-week tax review with an Ottawa CPA can make a meaningful difference.

The Complete Self-Employed Tax Checklist

Your Personal & Identification Documents

• Social Insurance Number (SIN)
• Spouse or common-law partner's SIN and their net income for 2025 (required to calculate certain credits)
• Prior year's Notice of Assessment (NOA) — confirms your RRSP deduction limit and any carryforward amounts
• Direct deposit banking information for faster CRA refunds

Business Income

Accurate income reporting is non-negotiable. CRA cross-references T4A slips issued by your clients against what you report, and discrepancies trigger reviews.

Under Canadian tax law, self-employed individuals and sole proprietors are required to report income using the accrual method — meaning income is recognized when it is earned (i.e., when the work is done and the invoice is issued), not simply when payment is received. This is one of the most misunderstood rules in self-employment taxation, and it catches a lot of people off guard at filing time.

In practical terms: if you invoiced a client in December 2025 but didn't receive payment until February 2026, that income belongs on your 2025 return. Unpaid invoices at year-end are still income. The only exceptions to accrual reporting under the Income Tax Act are farmers, fishers, and commission agents.

This is an area where working with an Ottawa CPA genuinely pays off. Identifying which invoices were outstanding at December 31 — and ensuring they're properly reported — is something many self-employed Canadians get wrong on their own.

• Gross income from all clients and contracts (not net — report everything before expenses)
• Any T4A slips received from clients
• All invoices issued in 2025, including any that remained unpaid at year-end
• Records of cash, e-transfer, PayPal, Stripe, or platform-based payments
• Revenue from platforms such as Upwork, Fiverr, Etsy, Shopify, or Amazon
• Any barter income (the fair market value of goods or services received in exchange for your work is taxable)

Freelancers and contractors in Ottawa: If a client did not issue a T4A, that income is still taxable and must still be reported. CRA does not require a slip to exist before income must be declared.

Business Expenses — Where the Real Value Is Found

This is where working with an Ottawa accountant pays for itself. Many self-employed Canadians significantly under-claim, or claim incorrectly and face CRA adjustments later. Below are the most common deductible categories, with important accuracy notes throughout.

Home Office Expenses

The CRA's detailed method requires that your workspace be where you principally perform your work, or that it be used exclusively for business purposes on a regular and ongoing basis for meeting clients or customers. The temporary flat-rate method introduced during COVID is no longer available for the 2025 tax year.

• Total square footage of your home
• Square footage of your dedicated workspace
• Rent paid in 2025 (for renters)
• Mortgage interest and other eligible occupancy costs, where permitted under CRA rules
• Utilities: hydro, heat, water
• Internet (business-use portion)
• Home insurance (pro-rated to workspace percentage)
• Property taxes (pro-rated)
• Maintenance and minor repairs (pro-rated)

Important: Home office expenses cannot be used to create or increase a business loss in most circumstances. Excess amounts carry forward to a future profitable year.

Vehicle Expenses

CRA requires a mileage logbook to support any vehicle deduction. Without one, the entire claim is at risk during an audit. Your logbook must record the date, destination, business purpose, and kilometres for each trip.

• Total kilometres driven in 2025
• Business kilometres driven (documented in a logbook)
• Fuel and oil
• Insurance
• Maintenance and repairs
• Lease payments or Capital Cost Allowance (CCA) if you own the vehicle
• Parking fees for client and business meetings
• License and registration

The deductible portion = (Business km ÷ Total km) × Total vehicle expenses.

Equipment, Technology & Capital Assets

• Computer, laptop, monitor, or tablet purchases
• Software subscriptions (Adobe, QuickBooks, Microsoft 365, project management tools)
• Business-use portion of your cell phone plan
• Specialized tools, equipment, or instruments required for your trade
• Note: capital assets with a useful life beyond one year are generally depreciated through CCA rather than expensed in full — your Ottawa accountant can confirm the right treatment

Professional & Business Operating Costs

• CPA and accounting fees (fully deductible as a business expense)
• Legal fees directly related to earning business income
• Professional association memberships and dues
• Business liability insurance
• Marketing and advertising: website costs, Google Ads, social media advertising, business cards, photography
• Payments to subcontractors (you may need to issue T4As for amounts over $500)
• Business bank account and credit card fees
• Office supplies consumed during the year

Training & Professional Development

• Courses and certifications directly related to your current business activities
• Trade publications and professional books

A note on training deductions: CRA expects a clear connection between the training and your existing self-employment work. Courses that prepare you for a new career or a different line of business are generally not deductible. When in doubt, ask.

Investment, RRSP & Other Income

• T3 slips (trust and investment fund income)
• T5 slips (investment income: interest, dividends)
• RRSP contribution receipts for contributions made January 1 – March 2, 2026 (deductible on your 2025 return)
• Rental income and expense records (reported on a separate T776)
• Capital gains or losses from sold investments or property

CPP Contributions & EI — Know What You Owe

Canada Pension Plan (CPP)

As a self-employed individual, you pay both the employee and employer portions of CPP contributions — based on your net self-employment income and the annual thresholds set by CRA. The total obligation is one of the more significant surprises for people who are newly self-employed, and contribution amounts change year over year. Always verify the current-year rates and maximums rather than assuming they're the same as prior years.

The key thing to understand: CPP for self-employed Canadians is meaningful, and it's worth planning for throughout the year rather than absorbing entirely at tax time.

• Note your net self-employment income so your CPA can calculate your CPP obligation accurately
• The employer-half of CPP contributions is deductible as a business expense; the employee-half qualifies as a non-refundable tax credit

Employment Insurance (EI)

EI participation is voluntary for self-employed individuals, but provides access to special benefits including maternity, parental, sickness, and compassionate care leave.

• If you opted into the self-employed EI program, include your premium records

GST/HST — The Section That Trips Up the Most People

GST/HST Registration

Once your total worldwide taxable revenues exceed the small supplier threshold (currently $30,000), you are generally required to register for a GST/HST account. The effective date of required registration depends on when you exceeded the threshold — not when you filed, and not when you realized it. The timing rules can be nuanced, and the consequences of getting them wrong can be costly. If you're anywhere near the threshold or unsure whether you've crossed it, reviewing your specific facts with an Ottawa CPA is the right move.

Some supplies are zero-rated or exempt from GST/HST — certain health services, residential rents, and others. If your business operates in one of these areas, your registration obligations may differ.

What Happens If You Should Have Registered but Didn't

This is more common than most people expect, and it's a serious exposure. If CRA determines you were required to register but failed to do so, they can:

• Assess back-HST on all taxable sales made from the date you were required to register
• Charge interest from the date each remittance was due
• Apply penalties for failure to register and failure to file returns

In many situations, a CPA can help you navigate a voluntary disclosure to CRA, which can reduce or eliminate penalties when handled proactively. Waiting for CRA to find the issue on their own is never the better option.

Voluntary Registration — Worth Considering Even Below the Threshold

If your revenue is below $30,000, you can still register voluntarily. The main benefit is the ability to claim Input Tax Credits (ITCs) — recovering the HST you paid on business-related purchases. For businesses with meaningful expenses, this can represent real money. Voluntary registration also signals professionalism to corporate clients who expect to receive HST invoices.

Input Tax Credits (ITCs)

Once registered, you can recover the HST paid on eligible business expenses. Common ITC sources include equipment, software, advertising, professional fees, and office supplies. Keep all receipts showing the HST charged, the vendor's HST registration number, the date, and the amount.

Your GST/HST Checklist:

• Total 2025 business revenue — have you exceeded $30,000?
• If registered: HST number, your filing frequency, and all remittance records for 2025
• HST collected from clients throughout the year
• ITC documentation: receipts for HST paid on business expenses
• Confirm your remittance deadlines — annual, quarterly, and monthly filers have different due dates

Expenses CRA Commonly Denies — And Why

Understanding what gets flagged is just as important as knowing what to claim.

1. Home office without a qualifying workspace — A dual-purpose room (home office that doubles as a guest bedroom, for example) rarely satisfies CRA's requirements.
2. Vehicle expenses without a logbook — CRA will estimate the business portion or deny the claim outright. A logbook is non-negotiable.
3. 100% claims on mixed-use items — Phones, internet, and vehicles are almost never used exclusively for business. Claiming 100% is a red flag.
4. Meals and entertainment above the 50% limit — Only 50% of eligible meal and entertainment expenses are deductible under the Income Tax Act.
5. Training for a new career — Courses preparing you for a different occupation are not deductible as business expenses.
6. Personal travel with a single business meeting — Adding one meeting to a personal trip does not make the full cost deductible.
7. Capital purchases fully expensed in one year — Assets with lasting value beyond one year generally need to be depreciated through CCA.

Ottawa & Area: Why Local Expertise Runs Through Everything We Do

The self-employed community in Ottawa is remarkably diverse. We work with freelance designers in the Glebe, independent IT consultants in Kanata, federal government contractors in Centretown, personal trainers in Westboro, renovators and tradespeople serving Barrhaven and Nepean, and healthcare practitioners in Orléans and Cumberland — among many others.

What that diversity means in practice is that the right Ottawa accountant isn't just filling in boxes. They understand how federal contracting works, what industry-specific expenses are defensible, and how to position your return for long-term growth — whether that means staying as a sole proprietor or exploring whether incorporation makes sense for your situation.

At Majdi Ibrahim, CPA Professional Corporation, we bring Fortune 500 CPA-level expertise with a tone that doesn't make you feel like you need a tax law degree to follow along. We're genuinely invested in the financial success of our clients — not just the compliance piece.

What Happens When You Bring This Checklist to Majdi Ibrahim, CPA Professional Corporation?

Coming in organized makes a real difference — for both of us.

You get a faster, smoother filing experience. When your records are ready, we spend our time finding deductions rather than tracking down missing information. Most organized clients are in and out in a single meeting.

Fewer back-and-forth requests. The checklist above covers nearly everything we need upfront. That means fewer emails asking for one more receipt or one more number.

Better deduction identification. With a complete picture of your income and expenses in front of us, we can spot opportunities that are easy to miss — especially around home office, vehicle use, GST/HST ITCs, and CPP optimization.

A GST/HST compliance review at no extra charge. We check your registration status, remittances, and ITC claims as part of every self-employed return. It's one of the most common areas where self-employed Canadians have unresolved exposure without realizing it.

Reduced CRA risk. A properly prepared and well-documented return is far less likely to attract CRA attention. And if CRA does ever follow up, you'll have the records to support every claim.

Complete confidence in your final filing. You'll know exactly what was filed, why each deduction was claimed, and what to expect going forward. No guessing.

Frequently Asked Questions

What happens if I miss the June 15 filing deadline?

If you owe taxes and file late, CRA charges a late-filing penalty of 5% of your balance owing, plus 1% for each full month the return remains outstanding, up to 12 months. If you were assessed a late-filing penalty in either of the previous three tax years, the penalty rate increases to 10% plus 2% per month for up to 20 months. Filing on time — even if you can't pay the full balance — avoids the late-filing penalty entirely. You'll only face interest on the unpaid amount.

Can I file my own taxes if I'm self-employed in Canada?

Yes. Software like Wealthsimple Tax, TurboTax, or StudioTax can handle self-employed returns for straightforward situations. The complexity rises quickly, though, with home office claims, vehicle deductions, accrual-basis income reporting, GST/HST compliance, CPP calculations, and capital cost allowance. A CPA identifies deductions that software won't prompt you for and ensures your return is defensible if CRA ever reviews it. The accounting fees are also fully deductible.

How much tax should I be setting aside throughout the year?

A reasonable starting point for most self-employed Canadians is 25–30% of net business income, covering federal and provincial income tax plus your CPP contributions. At higher income levels — particularly above $100,000 net — your effective rate will be higher. If your tax owing exceeded $3,000 in either of the two prior tax years, CRA will likely require you to make quarterly instalment payments. An Ottawa CPA can help you set up a system so tax time never comes as a shock.

What expenses does CRA most commonly deny?

The most frequently denied claims include: vehicle expenses without a mileage logbook, home office deductions where the workspace doesn't meet CRA's principal-use or exclusive-use requirements, 100% claims on mixed-use items like phones and internet, meals and entertainment above the 50% limit, capital assets fully expensed in a single year, and training costs for new careers rather than existing business activities.

Do I need an Ottawa CPA if I'm self-employed?

There's no legal requirement — but the value is real. A CPA does more than file a return: they ensure you're capturing every eligible deduction, flag GST/HST obligations before they become a problem, plan CPP contributions, and help you think about whether incorporating makes sense for your business. For sole proprietors with growing revenue, working with a local Ottawa CPA is often one of the better financial decisions of the year. And the fee is deductible.

Book Your Self-Employed Tax Review with Majdi Ibrahim, CPA — Before June 15

If you're self-employed and still haven't filed your 2025 return, you have days — not weeks. Don't rush through it alone and leave deductions behind that are rightfully yours.

Here's exactly what a self-employed tax review with Majdi Ibrahim, CPA includes:

• A complete review of your income records, including accrued and unpaid invoices
• A thorough pass through your expenses to capture every eligible deduction
• GST/HST compliance check — registration status, remittances, and ITCs
• CPP calculation and 2026 instalment planning so you're not caught off guard again
• A filed return you can stand behind

Majdi Ibrahim, CPA is currently accepting self-employed clients for the 2025 filing season. Majdi Ibrahim, CPA Professional Corporation serves freelancers, contractors, consultants, and sole proprietors across Ottawa and Canada

Book your self-employed tax review at www.treehousecpa.com

Spots are limited before June 15. Reach out today — let's get this done right.

This article is provided for general informational purposes only and does not constitute personalized tax advice. Tax rules are subject to change. Please consult a CPA for advice specific to your situation.