Amortization expenses are those which related to intangible assets like patents, trademarks and so on. These are allocated over the lifetime of such asset, so for example if a company has incurred $100000 for buying trademarks for a period of 10 years then company would amortize $10000 every year. While making entry in the books of account a company would debit amortization expense and credit the concerned intangible asset account. Given below is he journal entry for amortization expense
Amortization expense account Debit
To Intangible asset account
In the balance sheet the company keeps reducing the balance every year, so at the end of 1st year the trademark will be reduced by $10000 and in the balance sheet they would be shown as $90000.