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CRA Tax Penalty Calculator Methods: A Guide to CRA Interest & Penalties

The CRA calculates tax penalties such as the Late-filing penalties or gross negligence penalties as a percentage of the underlining amount owed. With the gross negligence penalty, the CRA may charge you a penalty of the greater of either $100 or 50% of the amount of understated tax. This is in addition to other types of penalties. However, you can avoid CRA penalties altogether. Farber Tax can help you calculate potential tax penalties and get relief from CRA penalties.

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If you have a tax balance owing and don’t pay it when it’s due, the Canada Revenue Agency (CRA) charges compound daily interest. This includes interest on the balance owing if the CRA reassesses your return. The agency will also charge penalties if you owe taxes and do not file your return on time. Then the CRA will charge interest on your penalties as well. These costs certainly add up and leave people searching for a tax penalty calculator to figure out exactly how much they owe.

The CRA can be very confusing to deal with. Not only are the agency’s processes and rules complex, but there are so many different potential polices and penalties that it’s easy to feel lost.

There are many different penalties that could be charged. For example, situations where the agency can charge penalties include:

  • The late-filing penalty
    • As mentioned, if you owe tax and do not file your returns by the deadline, the CRA will charge a late-filing penalty.
    • The penalty will be 5% of your balance owing, plus 1% of the balance owing for each full month the return is late, to a maximum of 12 months.
    • However, if you file your taxes late and have been charged a late-filing penalty in any of the three previous tax years, the late-filing penalty can be increased to 10% of the balance owing for the most-recent tax year, plus 2% for each full month, to a maximum of 20 months.
  • The repeated failure to report income penalty
    • You can be charged a penalty if you fail to accurately report your income on your tax return and have also failed to report it in any of the three previous tax years
    • The penalty will be 10% of the amount you failed to report on your recent return or 50% of the difference between the understated tax and the amount of tax withheld related to the amount you failed to report, whichever is lesser
  • False statements or omissions penalty
    • If you knowingly make a false statement or omission on your tax return, you may have to pay a penalty
    • This penalty will be $100 or 50% of the understated tax and/or the overstated credits related to the issue, whichever is greater

Rather Than Searching for a Tax Penalty Calculator, Resolve Your Tax Issues


If you owe tax debt, penalties, and interest, your first instinct may be to search for a tax penalty calculator to figure out exactly how much you owe. While knowing what you are expected to repay is important, it’s even more important that you solve the tax issue itself.

As mentioned, the CRA will charge interest on penalties. This means that the longer you take to resolve your problem and pay your tax bill, the more you will owe. The CRA has very strong powers and the agency can and will eventually garnish your wages or seize your assets if you do not pay what you owe. This means it’s critical that you deal with the issue as soon as possible.

If you have the money to pay your tax debt, plus penalties and interest, you should do so. This is the quickest and most straightforward way to resolve the issue. However, since penalties and interest charges can escalate very quickly, you may not be able to pay right away.

If this is the case, the professional team at Farber Tax Solutions can help you. There are ways to potentially receive relief from penalties and interest, and you may be able to have penalties waived if you disclose errors or undisclosed information before the CRA comes calling. However, it’s critical to use caution in these situations. Not only are CRA processes confusing and complicated, but if you make an error the agency can use the information you provide against you to strengthen their own case.

Working with professionals who fully understand CRA processes and who know how to communicate and negotiate with the agency is your best chance of success. Contact Farber Tax Solutions today to find out how we can help. We’ll do more than give you a tax penalty calculator. We’ll work to resolve your tax issue so you can get on with your life.

Farber Tax Solutions Helps You at Every Step of the Way including:

  • 1| Organizing: We analyze all documents and communication, to fight the CRA on your behalf
  • 2| Audits: We assist you with audits and ensure proper conduct by tax authorities
  • 3| Appeals: We can prepare a Notice of Objection, clarifying your standing with the CRA
  • 4| Litigation: We represent you at all levels of court