What are common tax mistakes in Canada?

Asked by: Mertie O'Conner  |  Last update: July 5, 2026
Score: 4.8/5 (48 votes)

Common tax mistakes in Canada often involve failing to report all income sources (like side gigs or foreign investments), improper tracking of records, and missing deadlines, which can lead to penalties. Key errors also include claiming ineligible personal expenses as deductions, neglecting to update personal information like marital status, and forgetting to report digital platform income.

What is the 90% rule in Canada?

Canada's 90% rule helps non-residents and recent immigrants claim full federal tax credits (like the Basic Personal Amount) if 90% or more of their net worldwide income for the relevant tax year is from Canadian sources; otherwise, credits are prorated (reduced) based on their Canadian residency period, ensuring fairness for those who weren't residents all year. 

What is the most overlooked tax break in Canada?

Commonly overlooked tax credits include the Child Care Expense Deduction, Canada Caregiver Credit and Medical Expense Tax Credit. The Child Care Expense Deduction allows Canadians to deduct up to $8,000 per child under the age of seven, $5,000 per child aged seven to 16 and $11,000 for a disabled child.

What is the most common mistake made on taxes?

Avoid These Common Tax Mistakes

  • Not Claiming All of Your Credits and Deductions. ...
  • Not Being Aware of Tax Considerations for the Military. ...
  • Not Keeping Up with Your Paperwork. ...
  • Not Double Checking Your Forms for Errors. ...
  • Not Adhering to Filing Deadlines or Not Filing at All. ...
  • Not Fixing Past Mistakes. ...
  • Not Planning for Next Year.

How much tax do you pay on $70,000 a year in Canada?

For a $70,000 income in Canada (using 2025 rates), you'll pay roughly $13,000 to $20,000 in total taxes (federal, provincial, CPP, EI), depending on your province, resulting in a take-home pay around $50,000-$59,000, with federal tax around 14.5% or 20.5% depending on the portion, plus provincial tax and deductions like CPP and EI. 

Avoiding Common Tax Mistakes in Canada | Tax Prep Masterclass | Optimize

24 related questions found

Do Canadians pay 40% in taxes?

According to a new study published by the Fraser Institute, in 2024 the average Canadian family (including single people) paid $48,306 in total taxes. Given the average family's total cash income was $114,289 in 2024, this means families paid 42.3 per cent of their incomes in taxes levied by all levels of government.

Is $75,000 a good salary in Canada?

The average salary in Toronto is $62,050, which is 14% higher than the Canadian average salary of $54,450. A person making $75,000 a year in Toronto makes 20.9% more than the average working person in Toronto and will take home about $56,504.

What can trigger a tax audit?

Top IRS audit triggers

  • Math errors and typos. The IRS has programs that check the math and calculations on tax returns. ...
  • High income. ...
  • Unreported income. ...
  • Excessive deductions. ...
  • Schedule C filers. ...
  • Claiming 100% business use of a vehicle. ...
  • Claiming a loss on a hobby. ...
  • Home office deduction.

How to not get screwed on taxes?

In this article

  1. Plan throughout the year for taxes.
  2. Contribute to your retirement accounts.
  3. Contribute to your HSA.
  4. If you're older than 70.5 years, consider a QCD.
  5. If you're itemizing, maximize deductions.
  6. Look for opportunities to leverage available tax credits.
  7. Consider tax-loss harvesting.
  8. Consider tax-gains harvesting.

Are there tax loopholes in Canada?

One often overlooked tax loophole is the advantage of hiring family members. It does not matter if you are a one-person business or have several employees; hiring your spouse or child can bring you considerable tax savings. You might be familiar with the “basic personal amount” of your spouse or child that is tax-free.

What can I write off on my taxes in Canada?

  • GST/HST Credit.
  • Charitable Donation Tax Credit.
  • Self-employment expenses.
  • Other employment expenses.
  • Canada Workers Benefit (CWB)
  • Registered Retirement Savings Plan (RRSP) deduction.
  • Home Buyers' Amount (HBA)
  • Moving expenses.

What can I claim on tax without receipts?

Situations where you can claim on tax without receipts

  • $300 maximum claims rule. ...
  • Maximum claim for clothing and laundry costs without receipts. ...
  • Claiming fuel costs without receipts. ...
  • Travel and overtime meal claims. ...
  • Small expenses claims. ...
  • Claiming donations on tax without receipts. ...
  • Claims for parking fees.

What are the 5 mistakes you must avoid in a TFSA?

The five key mistakes to avoid in a TFSA are over-contributing (and re-depositing withdrawals in the same year), treating it like a basic savings account (missing out on investment growth), failing to track your room (relying solely on CRA data), improperly moving funds (withdrawing and redepositing instead of transferring), and investing in non-qualified assets or high-risk trades (like day trading or certain foreign stocks that incur withholding tax). 

What is the 30% rule in Canada?

The 30% rule restricts Canadian pension funds from investing in securities of a corporation that carry more than 30% of the votes that may be cast to elect directors of the corporation (subject to certain limited exceptions).

Does the IRS track Venmo?

The IRS does not actively monitor every Venmo account 1-(855)(518)(9622). However, Venmo may report certain transactions to the IRS if they meet federal reporting requirements 1-(855)(518)(9622). This typically applies to income-related payments, not casual personal transfers 1-(855)(518)(9622).

What is the 20k rule?

The "20k rule" refers to the traditional IRS threshold for reporting income from payment apps and online marketplaces on Form 1099-K: over $20,000 in gross payments AND more than 200 transactions in a calendar year. While a law (the American Rescue Plan) temporarily lowered the threshold to $600, recent legislation, the One Big Beautiful Bill Act (OBBBA) (OBBBA), has reinstated the $20,000/200-transaction rule for tax years starting in 2025, providing relief for casual sellers and gig workers. 

How much money can you receive without reporting to the IRS?

Reporting cash payments

A person must file Form 8300 if they receive cash of more than $10,000 from the same payer or agent: In one lump sum. In two or more related payments within 24 hours. For example, a 24-hour period is 11 a.m. Tuesday to 11 a.m. Wednesday.

Who gets tax audited the most?

Which Taxpayers the IRS Audits Most Often. Oddly, people who make less than $25,000 have a relatively high audit rate. This higher rate is because many of these taxpayers claim the earned income tax credit, and the IRS conducts many audits to ensure that the credit isn't being claimed fraudulently.

What not to say during an audit?

What Not to Say During an Audit?

  • Avoid Guessing or Speculating. If you're unsure about an answer, it's better to admit it than to guess. ...
  • Don't Offer Unsolicited Information. ...
  • Refrain from Making Negative Comments. ...
  • Avoid Emotional Reactions. ...
  • Don't Promise What You Can't Deliver. ...
  • Key Takeaway.

What salary is considered middle-class in Canada?

If you're considered to be part of Canada's middle class, then you have an annual income between $57,375 and $114,750. Those with this income are seen to make enough money to life a comfortable life. That said, there isn't much economic co-operation between this income range and the idea of middle-class life.

What jobs pay 80k a year in Canada?

80k salary jobs

  • Intermediate Precast Structural Engineer. ...
  • Site Manager. ...
  • Territory Sales Representative - Toronto, ON. ...
  • Electro-Mechanical Engineer. ...
  • Production machine operator. ...
  • IT Specialist. ...
  • Energy Sales Representative - Edmonton, AB. ...
  • Data Analyst : A/B-tests and customer onboarding (Remote)