It’s tax season, and April 30, 2026, was D-Day to file and pay your income tax returns for the 2025 tax year. While you have been prompt with your tax deadlines, life happens, and you miss a deadline due to unavoidable circumstances. Missing the deadline will have consequences, including penalties and interest charges. What’s done is done. What you can do next is act fast to file returns to mitigate the impact.

Who Should File Taxes in Canada?

Often, you miss the deadline because you think you don’t have to file taxes. However, anyone who is working in Canada for an employer, is self-employed, is doing business, or earning investment income in Canada must file taxes.

Canada’s tax system is based on residency and not citizenship. You may be a Canadian resident or a newcomer – an immigrant, an international student, a temporary foreign worker, or a minor. If you earned more than the basic personal amount, which is $16,129 for 2025, you have to file returns and pay taxes.

Now, by the time you learn about your obligation to file and pay taxes, the April 30 deadline is over. What consequences could you face?

Consequences of Missing the April 30 Tax Filing Deadline

Before we jump to consequences, understand the tax deadline.

• For individuals, the tax filing and paying deadline is April 30.
• For self-employed and sole proprietors, the last date to pay taxes owed for the 2025 tax year is April 30, and the deadline to file tax returns is June 15.

If you miss the deadline, the Canada Revenue Agency (CRA) will impose penalties and interest charges for every day of delay.

Late-filing Penalties: If you file your tax returns late, the CRA will impose a 5% penalty on the tax owed and a 1% penalty for each full month of delay in filing returns, up to 12 months. The second delay will face a double penalty: 10% of the tax owed and 2% per month of delay, up to 20 months. These penalties will also apply if the CRA issues you a formal demand to file tax returns.

In addition to the late filing penalty, the CRA will also charge interest.

Interest Charges: If you owe tax, the CRA will charge interest on the tax amount at the prescribed interest rates starting May 1st. For the second quarter of 2026, the interest rate is 7%. This interest will be compounded daily, and the interest rates will be revised quarterly. The more you delay tax payment, the bigger your interest charge will be. Hence, it is suggested you pay the tax owed before April 30 or as early as possible.

What Can You Do to Minimize Penalties and Interests?

The consequences of late filing can’t be avoided, but they can be minimized. The two key reasons for missing deadlines are insufficient funds to pay taxes or failure to prepare returns.

Insufficient Funds: If you fail to file returns because you don’t have enough money, the immediate response is to consult a tax advisor, gather your documents, and file your returns. This will at least stop the 5% + 1% late-filing penalty.

Next, contact the CRA to work out a payment plan. The CRA will accept late payments but will charge the 1% interest compounded daily. There is a third option under Form RC4288, which provides relief from penalties and interest but applies only in extraordinary circumstances or financial hardship, and relief is at the agency’s discretion.

Delay in Preparing Returns: In the second scenario, the immediate response is to pay the tax owed. Even if you don’t know your tax liability, do a rough calculation and pay it before April 30. Note that April 30 is the last date, but you can pay the tax any time before it.

If the deadline has passed, pay an extra amount. The CRA will accept late payments and adjust the penalty and interest. If any balance remains, the CRA will refund you the amount, provided you file your returns.

Failing to File Tax Returns Is Not an Option

The best solution is to pay taxes before April 30. The 5% + 1% late filing penalty is charged on taxes owed. If your tax owed is $0, the penalty is effectively $0. However, this is no excuse to avoid filing returns on time. Immediately consult a tax advisor and file your returns to avoid further consequences.

Even if you do not have any tax owed, you must file tax returns on time. Because delays in tax filing can:

• Interrupt your tax refund and credits.
• Interrupt your government benefits, such as the Canada Child Benefit and Canada Groceries and Essentials Benefit (formerly GST/HST credits), and Old Age Security (OAS)
• Affect creation of Registered Retirement Savings Plan (RRSP) contribution room, which is 18% of your previous year’s taxable income.
• Affect your loan and mortgage application as banks need the Notice of Assessment (NOA), which the CRA issues after assessing your tax returns.
• If you have a history of late filing and you end up owing tax in the future, you might face higher penalties.

Even $ 0-income earners should file tax returns to receive government benefits. It’s not just about benefits; timely tax filing ensures tax compliance. Multiple instances of late filing may also constitute willful tax evasion and lead to criminal charges.

If convicted of willful tax evasion under the Income Tax Act, the CRA would calculate your income and tax liability and could impose fines between 50% and 200% of taxes owed. In extreme cases of fraud or deliberate tax evasion, one could also face a sentence of up to 5 years’ imprisonment.

Not Paying Taxes Is Not an Option

Just as failing to file returns is not an option, avoiding paying taxes is also not an option. The CRA has the power to collect taxes by withholding future tax refunds or benefits, by wage garnishment, and by placing liens on property. And the CRA doesn’t need a court order to resort to such collection methods.

Better late than never is not always true in the case of taxation. Once is a mistake, twice is a choice, and multiple instances are deliberate. Taxes are complex, and consequences are brutal. Having a professional tax advisor by your side can help you avoid these consequences and earn you tax savings and credits where applicable.

Contact Ford Keast LLP in London to Help You with Timely Tax Filing

Talk to a professional tax advisor to help you collect all the necessary information needed to file taxes on time and stay compliant. At Ford Keast LLP, our accountants and tax advisors can provide services such as tax filing and applying tax deductions and exemptions in a compliant manner. To learn more about how Ford Keast LLP can provide you with the best accounting and taxation services, contact us online or call us at 519-679-9330.