Self-employed tax deadlines are easier to manage when you separate the filing deadline from the payment deadline. For most sole proprietors and freelancers with a December 31 year-end, CRA’s 2027 calendar says any balance owing is due by April 30, 2027, while the return is due by June 15, 2027. You can check the official dates on the CRA’s 2027 tax deadlines page.
That split matters because many self-employed people assume the later filing date also applies to payment. It does not. If you are just getting set up, our tax help for self-employed Canadians page explains the kind of record keeping and filing support we usually provide.
“I can wait until June 15 to pay what I owe.”
That is the mistake to avoid. June 15 is the filing deadline for many self-employed Canadians. April 30 is still the payment deadline.
CRA also says that if a due date falls on a Saturday, Sunday, or CRA-recognised holiday, your return or payment is on time if CRA receives it, or it is postmarked, by the next business day.
Self-Employed Tax Deadlines: The 2027 Rule
For the 2027 filing season, the basic rule is simple. If you are self-employed and your business uses a December 31 year-end, you have until June 15, 2027 to file your return. If you owe tax, the money is still due by April 30, 2027. That is why the return and the payment should never be treated as the same deadline.
This is one of the most common misunderstandings we see every tax season. The return can be due later, but the tax itself is not. That is also why we tell people to keep a running estimate of tax owing during the year, not just at the end of March.
There is one unusual exception. If you or your spouse or common-law partner carried on business in 2026 and the business expenses were mainly for tax shelter investments, CRA says the filing deadline is April 30, 2027 instead of June 15. That exception is listed on the same 2027 deadline page.
If you want a broader look at the year-end calendar, our Canada tax deadlines guide is a useful companion piece.
The 2027 Dates You Should Put on Your Calendar
The CRA calendar for 2027 gives self-employed Canadians four instalment dates if instalments apply: March 15, June 15, September 15, and December 15. These dates matter if CRA expects you to pay tax in instalments instead of waiting until April.
Many self-employed people end up in instalments because no tax is being withheld from their income the way it is for employees. That means you need to plan ahead. If you are waiting for a bill after year-end, you are already behind.
Think of it this way: your tax year is not just one filing date. It is a calendar of payment dates, bookkeeping dates, and one final filing date. If you keep everything in one folder and deal with it in March, the stress piles up fast.
If your numbers change during the year, it is worth revisiting your estimate before the next instalment date. Our tax planning service is often helpful when income is uneven or when you are trying to decide how much to set aside.
What to Do If CRA Expects Instalments
If CRA tells you to pay instalments, do not ignore the reminder. Instalments are simply advance payments toward your income tax bill. They are meant to smooth out the cash flow so you are not hit with one large payment after year-end.
For many self-employed Canadians, the practical move is to keep a separate tax savings account and transfer money into it every time a client pays. That way, you are not scrambling in April. We see this work well for freelancers, consultants, drivers, and seasonal businesses.
If your books are messy or you have mixed income, our Self-Employed & Gig Work service can help you get the return ready without guessing at the numbers.
If You Also Charge GST/HST
Self-employed tax deadlines do not stop at income tax. If you are registered for GST/HST, you need to watch that calendar too. For annual filers who are sole proprietors with a December 31 year-end and business income, the CRA rule is the same split: payment by April 30, 2027 and filing by June 15, 2027. The same CRA deadline page confirms that rule.
If you file monthly or quarterly, the deadline is different. In those cases, the return and payment are generally due one month after the end of the reporting period. This is why GST/HST can get missed so easily. It feels separate, but it sits on top of your income tax work.
If GST/HST is part of your business, our GST/HST Returns service can help keep that account on track so the filing dates do not pile up.
If Your Business Is Incorporated
If you operate through a corporation, the self-employed filing rule is not the right rule to follow. A corporation has to file its T2 return within six months of the end of its tax year, even if it owes no tax. CRA sets that out on the corporation income tax return page.
The payment deadline is also different. CRA’s balance-due day rules explain that most corporation taxes are due two months after year-end, with a three-month rule for some eligible Canadian-controlled private corporations. That is why incorporated owners need a separate deadline plan.
If you are not sure whether your business income should be handled as a sole proprietorship or a corporation, our Corporate Tax Return service is usually the better fit for the T2 side, while our team can also help you sort out the bigger picture through tax planning.
What Happens If You Miss a Deadline
If you miss the April 30 payment deadline, CRA can charge interest on the unpaid balance. CRA’s interest and penalty rules say interest starts from the day the payment was due. Missing an instalment date can also create interest charges, so it is worth staying ahead even if the amount is small.
Late filing can create a second problem. Even if you cannot pay in full, filing on time helps you avoid late-filing penalties and keeps the return moving through the system. That is especially important for people who are waiting on a notice of assessment, trying to reconcile instalments, or planning next year’s payments.
If you have already fallen behind, do not freeze. Get the return filed, then deal with the balance. If the return is a mess or the records are incomplete, our Second Look Review service can help you clean it up before CRA turns a delay into a bigger problem.
A Simple Way to Stay Ahead in 2027
Put April 30, June 15, March 15, September 15, and December 15 in your calendar now.
Move tax money into a separate account as income comes in.
Reconcile income and expenses at least once a month, not just at year-end.
Check whether GST/HST or corporate deadlines apply to you as well.
Use a tax professional early if your income changed, your business grew, or you are not sure which deadlines apply.
This is real money, and the calendar is already live. The sooner you map the dates to your own situation, the less likely you are to miss something important. If you want help lining up your filing, payment and instalment deadlines, contact us and we will help you get the calendar right.
