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Business Deductions Calculator

2025
Expense Categories
$

Business-use portion of fuel, insurance, repairs

$

Stationery, printer supplies, small tools

$

Website, ads, business cards, promotions

$

Accountant, lawyer, consultant fees

$

Liability, E&O, business property insurance

$

Client meals — only 50% is deductible

$

Flights, hotels, taxis for business trips

$

Business-use portion of phone and internet

$
Deduction Summary

Estimated Tax Savings

$4,684.70

Total Deductions

$15,800.00

Marginal Tax Rate

29.6%

Category Breakdown
CategorySpentDeductibleTax Saved
Vehicle$3,000.00$3,000.00$889.50
Office Supplies$1,500.00$1,500.00$444.75
Advertising$2,000.00$2,000.00$593.00
Professional Fees$3,000.00$3,000.00$889.50
Insurance$1,800.00$1,800.00$533.70
Meals & Ent. (50%)$2,400.00$1,200.00$355.80
Travel$1,500.00$1,500.00$444.75
Phone & Internet$1,800.00$1,800.00$533.70
Total$17,000.00$15,800.00$4,684.70

Note: Meals & entertainment expenses are only 50% deductible per CRA rules. You spent $2,400.00 but can only deduct $1,200.00.

More Information
Understanding Business Deductions in Canada

CRA rules for claiming business expenses

You can deduct any reasonable expense incurred to earn business income. Common categories include vehicle expenses (business portion), office supplies, advertising, professional fees, insurance, meals (50%), travel, phone/internet (business portion), rent, utilities, and capital cost allowance on equipment. The CRA requires expenses to be reasonable and directly related to earning income.
The CRA limits the deduction for meals and entertainment to 50% of the amount spent. This applies whether you take a client to dinner or buy lunch while travelling for business. The logic is that meals have a personal element — you would eat regardless. Some exceptions apply: meals at remote work camps, charity fundraisers, or if the cost is billed directly to clients.
CRA requires you to keep business records for at least 6 years from the end of the last tax year they relate to. This includes receipts, invoices, bank statements, contracts, and vehicle logbooks. Digital copies are acceptable if they are clear and legible. Good record-keeping is essential for claiming deductions and surviving a CRA audit.
Current expenses (fully deductible in the year) include rent, utilities, supplies, and repairs. Capital expenses (assets with lasting value) include equipment, furniture, vehicles, and computers — these are depreciated over time using Capital Cost Allowance (CCA). A repair is a current expense; a renovation that improves the property is a capital expense.
Yes, if you use part of your home regularly and exclusively for business, you can deduct a proportional amount of rent/mortgage interest, utilities, insurance, property taxes, and maintenance. Calculate the percentage based on workspace area divided by total home area. Self-employed individuals use Form T2125; employees need Form T2200.
CRA uses the "reasonable" test: would a sensible businessperson incur this expense to earn income? A $200 dinner with a major client is reasonable; a $5,000 dinner for two is not. Expenses must be proportional to the business activity and directly connected to earning income. If CRA questions an expense, you must be able to justify it.
Yes, for mixed-use expenses, you deduct only the business portion. Common examples: if you use your phone 60% for business, deduct 60% of the cost. If you drive 70% for business, deduct 70% of vehicle expenses. Keep a log to substantiate the business-use percentage in case of an audit.
If CRA disallows expenses during an audit, you will owe additional tax plus interest from the original due date. Penalties may apply if the claim was made knowingly or under negligent circumstances. Gross negligence penalties can be 50% of the additional tax owed. Always keep documentation and claim only legitimate expenses.

CRA-Aligned: Deduction rules follow CRA guidelines for the 2025 tax year. Meals and entertainment are limited to 50%. Tax savings are estimated using your combined marginal tax rate. Keep all receipts for 6 years. Consult a tax professional for personalised advice.

Disclaimer: This calculator provides estimates based on current CRA rates and thresholds for the 2025 tax year. It does not constitute professional tax, financial, or legal advice. Your actual liability may differ depending on your individual circumstances. Always consult a qualified accountant before making financial decisions. Read our terms