The June 15 Tax Deadline for Self-Employed Canadians (and What Missing It Actually Costs)

If you earn self-employment income, you get an extra six weeks past the regular April 30 filing deadline: your T1 return is due June 15. That extension comes with a trap that catches people every year, and the cost of missing the deadline depends entirely on one number. Here is how it all works.

Quick Answer

Self-employed Canadians (and their spouses) must file their T1 return by June 15. Any tax owing was still due April 30, so interest has been running since May 1 on unpaid balances. If you file after June 15 with a balance owing, CRA adds a late filing penalty: 5% of the balance plus 1% for each full month late, up to 12 months. No balance owing means no penalty, but file anyway to get your refund and keep benefit payments flowing.

Who gets the June 15 deadline

The June 15 filing deadline applies to you if you (or your spouse or common-law partner) reported self-employment income in the tax year. That includes sole proprietors, freelancers, gig workers, resellers, and anyone filing a T2125 (Statement of Business or Professional Activities) with their return. When June 15 lands on a weekend, the deadline moves to the next business day. In 2026 it is a Monday, so June 15 it is.

Everyone else had to file by April 30. If you have no self-employment income in the household, the June date does not apply to you, and the late filing clock has been running since the start of May.

The trap: payment was due April 30

The June 15 extension applies to filing, not paying. Whatever you owe for the year was due April 30, and CRA started charging interest on unpaid balances on May 1. Interest compounds daily at CRA's prescribed rate, which is set each quarter.

This is why filing close to June 15 still makes sense even if you cannot pay: the sooner you file, the sooner you know the real number, and filing on time keeps the penalty at zero. Once you know what you owe, here is every way to pay CRA, including what to do if you cannot pay the full amount.

What filing late actually costs

The late filing penalty is a percentage of your balance owing on the filing deadline:

5% of the balance owing the moment you are late, plus
1% of the balance for each full month you wait, up to 12 months

So a $5,000 balance filed three months late costs $400 in penalty (5% + 3%), on top of the daily compounding interest that has been running since May 1. If CRA charged you a late filing penalty in any of the three previous years and has issued a formal demand to file, the rates double: 10% plus 2% per full month, up to 20 months.

The flip side: if your balance owing is zero, the penalty is zero. Refund coming? CRA holds it until you file, and your GST/HST credit and other benefits are calculated from your return. There is no upside to waiting.

June 15 is a triple deadline for many sole proprietors

Three separate obligations can land on the same day:

Your T1 return (with the T2125)
Your annual GST/HST return, if you are registered and file annually with a December 31 year-end. Here is the line-by-line filing guide. Late GST/HST returns with a balance owing carry their own penalty: 1% of the amount owing plus 0.25% per full month, up to 12 months.
Your second quarterly tax instalment, if CRA requires you to pay instalments.

If you are not sure which of these apply to you, the CRA deadlines calendar shows every date with a countdown.

Haven't started? You can still make it

A sole proprietor return is mostly one form, the T2125, and it is very doable in a weekend if you focus on the right things in the right order. We wrote a separate step-by-step plan for exactly this situation: how to file your self-employed taxes at the last minute. Start with your income totals, claim the big expense categories first, and file even if it is not perfect. You can adjust a filed return later; you cannot un-miss a deadline.

If you do miss June 15, do not let one missed deadline become twelve missed months. Every full month adds another 1% to the penalty, so filing in week one of being late is dramatically cheaper than filing in month six. In genuine hardship cases (serious illness, disaster, CRA error), you can ask CRA to waive penalties and interest through a taxpayer relief request (Form RC4288), but that is an exception process, not a plan.

Never scramble for a deadline again

NorthOS keeps your income and expenses mapped to the right T2125 lines all year, tracks your GST/HST position, and reminds you before every CRA deadline. Next June 15, your return is an export, not a weekend.

Try NorthOS free

Frequently asked questions

Is there a penalty if I file late but CRA owes me a refund?

No. The late filing penalty is calculated as a percentage of your balance owing, so if your balance is zero or you are owed a refund, the penalty is zero. File anyway: CRA will not send your refund until you file, and benefit payments like the GST/HST credit and Canada Child Benefit are calculated from your return.

What is the late filing penalty for self-employed Canadians?

If you file after June 15 and have a balance owing, the penalty is 5% of the balance plus 1% for each full month you are late, up to 12 months. If CRA charged you a late filing penalty in any of the three previous years and issued a formal demand to file, the penalty doubles to 10% plus 2% per full month, up to 20 months.

Does the June 15 deadline apply to my spouse?

Yes. If you or your spouse or common-law partner earned self-employment income, both of you have until June 15 to file. The catch is the same for both: any balance owing was still due April 30.

I cannot pay what I owe. Should I still file by June 15?

Yes, always. Filing on time with no payment eliminates the late filing penalty entirely. You will owe interest on the unpaid balance, but interest alone is much cheaper than penalty plus interest. After filing, call CRA to set up a payment arrangement.

Is my GST/HST return also due June 15?

If you are a self-employed annual GST/HST filer with a December 31 fiscal year-end, yes: your GST/HST return is due June 15, even though the payment was due April 30. Late GST/HST returns with a balance owing have their own penalty: 1% of the amount owing plus 0.25% for each full month late, up to 12 months.

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