What is amortization and how does it work in business?

Published Saturday 21 March 2026

Table of contents

• What is amortization?
• Asset amortization vs loan amortization
• Why amortization matters to your business
• How amortization works
• How to calculate amortization
• Common amortization methods
• Amortization vs depreciation
• Managing amortization in your business
• FAQs on amortization

Key takeaways

• Recognize that amortization spreads the cost of intangible assets like patents, trademarks, and copyrights over their useful life to provide accurate financial reporting and avoid artificially inflated or deflated profits in any single year.
• Apply the straight-line amortization method for simplicity by dividing the asset's purchase price by its useful life to determine the annual expense amount, though consult with an accountant to ensure you're using the CRA-approved method for your specific situation.
• Utilize cloud-based accounting software to automate amortization calculations and reduce manual errors, while ensuring your records stay compliant with Canada Revenue Agency requirements.
• Work with a qualified accountant or bookkeeper to choose the correct amortization method for each asset and maintain consistent application throughout the asset's life, as CRA rules dictate which methods are acceptable for different types of intangible assets.

What is amortization?

Amortization is the process of gradually writing off the cost of an intangible asset over its useful life. Most intangible assets are amortized unless they have an indefinite life. It's how your business records purchases like patents, trademarks, or copyrights in your accounting records and tax returns.

The term can also refer to paying down a loan over time, but this article focuses on asset amortization for small business accounting.

Asset amortization vs loan amortization

Asset amortization applies to intangible assets, while loan amortization refers to paying down debt over time. Here's how they differ:

• Asset amortization: Spreads the cost of intangible assets like patents, trademarks, copyrights, or goodwill over their useful life
• Loan amortization: Reduces a debt balance through scheduled payments over time

This article focuses on asset amortization for business accounting purposes. For physical assets like vehicles or equipment, the equivalent process is called depreciation.

Why amortization matters to your business

Amortization gives you a clearer picture of your true profit and loss from year to year. Without it, writing off an asset's full value at purchase would make that year's profits look artificially low, while future years would appear more profitable than they really are.

Here's a practical example:

• The purchase: Your business buys a 20-year patent for $100,000
• Without amortization: Profits drop $100,000 in year one, then appear inflated for the next 19 years
• With amortization: You write off $5,000 each year for 20 years, accurately reflecting the value you're getting from the asset

This approach helps you make better decisions because your financial statements reflect reality.

How amortization works

Amortization spreads an asset's cost across your financial statements over time. Here's how the process works:

• At purchase: Record the full value of the asset on your balance sheet
• Each year: Amortize a portion of the asset's value to reflect its declining worth
• On your statements: The amortized amount appears as an expense on your income statement and reduces the asset's value on your balance sheet
• Tax benefit: Recording amortization as an expense lowers your taxable income

This process continues throughout the asset's useful life. For a patent, that means until it expires.

How to calculate amortization

Calculating amortization requires three key pieces of information, and the formula varies based on the method you use. The amount you amortize each year depends on:

• Asset value: The original purchase price you paid
• Asset lifespan: How long the asset will provide value, which may be set by the Canada Revenue Agency (CRA)
• Amortization method: The calculation approach you choose, which is also subject to CRA rules

Cloud-based accounting software can automate these calculations, but you need to enter the correct information to stay compliant.

Consult with an accountant or bookkeeper to avoid costly mistakes. You can find one in the Xero advisor directory.

Common amortization methods

The CRA sets rules about which amortization methods can be used in different situations. Always consult with an expert before choosing a method. The four common approaches include:

• Straight-line amortization: Writes off an equal portion each year. A $150,000 asset with a 15-year lifespan would be amortized at $10,000 per year.
• Declining balance method: Amortizes more in early years, less in later years. A $10,000 asset at 30% would be $3,000 in year one, then $2,100 in year two (30% of the remaining $7,000), and so on.
• Double declining balance method: A specific form of declining balance where the rate equals 2 divided by the asset's useful life. A five-year asset would be amortized at 40% per year.
• Annuity method: Amortizes based on how much income the asset generates each year. This requires modelling the asset's lifetime earnings, making it the most complex approach.

Amortization vs depreciation

Amortization and depreciation work the same way, but apply to different types of assets. The Canada Revenue Agency's General Index of Financial Information (GIFI) clarifies this for tax reporting, stating that depreciation is the amortization of tangible assets, while amortization refers to the amortization of intangible assets. The key difference is what you're writing off:

• Amortization: Used for intangible assets like patents, copyrights, trademarks, and licences
• Depreciation: Used for tangible assets like vehicles, tools, equipment, and machinery

Both methods spread an asset's cost over its useful life to give you accurate profit and loss reporting.

Managing amortization in your business

Amortization can feel complex, but it's essential for accurate financial reporting and tax compliance. You don't have to manage it manually.

Cloud-based accounting software can automate amortization calculations and track your intangible assets over time. This saves you from spreadsheet errors and keeps your books CRA-compliant.

Work with a qualified accountant or bookkeeper who understands your business. They can help you choose the right amortization method and ensure your records are accurate. Find an advisor who knows Xero in the advisor directory, or get started with one month free.

FAQs on amortization

Here are answers to common questions about amortization.

Is amortization an expense or a liability?

Amortization is an expense, not a liability. It appears on your income statement and reduces your taxable income while also decreasing the asset's book value on your balance sheet.

Can I use different amortization methods for different assets?

Yes, you can use different methods for different assets, but the CRA has rules about which methods are acceptable. Once you choose a method for an asset, you typically need to apply it consistently. Consult an accountant to ensure compliance.

What happens if I sell an asset before it's fully amortized?

You'll need to record any remaining unamortized value and calculate any gain or loss on the sale. This can affect your taxes; for example, the CRA allows corporations to use reserves to spread a capital gain over a maximum of five years. Work with an accountant to handle the transaction correctly.

Do I need special software to track amortization?

While you can track amortization manually, accounting software automates the calculations and reduces errors. Xero can help you manage intangible assets and keep your records accurate.

Should I hire an accountant to handle amortization?

For most small businesses, working with an accountant or bookkeeper is worthwhile. They ensure you're using the correct methods and staying CRA-compliant. For instance, CPA Canada notes that adjusting an asset's useful life is considered a change in accounting estimate that must be handled prospectively, which can impact your tax benefits. Find an expert in the Xero advisor directory.

See related terms:

• Intangible assets
• Assets
• More terms