Define: Amortisation

UK Accounting Glossary

Definition: Amortisation

Quick Summary of Amortisation

Process similar to depreciation, usually applied to intangible fixed assets.

What is the dictionary definition of Amortisation?

Dictionary Definition

Spreading the cost of an intangible asset, such as a lease, over the years in which it is used. It is usual to divide the cost of the lease by the number of years that the lease is held for, and then use that figure as the annual charge.

This is similar to depreciation except that depreciation deals with tangible or fixed assets such as motor vehicles or plant and equipment.

  1. The process of treating as an expenses the annual amount deemed to waste away from a fixed asset.
  2. The repayment of debt by a borrower in a series of instalments over a period.
  3. The spreading of the front-end fee charged on taking out a loan over the life of a loan for accounting purposes.
  4. Another word for Depreciation (USA).


Full Definition of Amortisation

The building up over a period of a fund to replace a productive asset at the end of it’s useful life, or to repay a loan.

In the case of a loan, the amount required for amortisation depends on the interest rate that can be earned on the accumulated fund.

In the case of replacement of physical assets, the amount needed depends not only on the interest rate, but also on the expected lifetime of the asset and on the rate of inflation, which affects the expected cost of replacement.


Amortisation FAQ's

What is the difference between depreciation and amortisation?

The key difference between amortisation and depreciation is that amortisation is used for intangible assets, while depreciation is used for tangible assets. An asset’s salvage value must be subtracted from its cost to determine the amount in which it can be depreciated.

What is an example of amortisation?

Amortising an intangible asset

You own a patent on a machine, and that patent lasts 20 years. You spent $20,000 to design and create the machine (initial cost of the patent). You should record $1,000 each year as an amortisation expense for the patent ($20,000 / 20 years).

Amortising a loan

You have a $5,000 loan outstanding. If you pay $1,000 of the principal each year, $1,000 of the loan amortises each year. You should record $1,000 each year in your books as an amortisation expense.

Why is amortisation used?

Amortisation of an intangible asset is the equivalent to depreciating a tangible asset like equipment. Intangibles are assets like patents and licenses that are of significant value to a company and have an estimated useful life. The cost is amortised over the useful life to record expenses in the period they are used.

Cite Term

To help you cite our definitions in your bibliography, here is the proper citation layout for the three major formatting styles, with all of the relevant information filled in.

Page URL
Modern Language Association (MLA):
Amortisation. Payroll & Accounting Heaven Ltd. November 21, 2019
Chicago Manual of Style (CMS):
Amortisation. Payroll & Accounting Heaven Ltd. (accessed: November 21, 2019).
American Psychological Association (APA):
Amortisation. Retrieved November 21, 2019, from website:

Definition Sources

Definitions for Amortisation are sourced/syndicated from:

This glossary post was last updated: 23rd December 2018.