Long- term assets are essential for business operations of most companies, especially when it comes to companies that perform production activities and have very valuable assets. Long- term assets are gradually amortized by use, which is why it is necessary to gradually transfer their value to production costs per individual product. Proper calculation and presentation of amortization is also important because in this way doubts about possible manipulation of the business result are removed. This paper presents all the important determinants of the importance of the accounting of long-term assets for the business result, and special emphasis is placed on the impact of amortization rates and amortization calculation methods on the financial result. Amortization could be used with the aim of adjusting the company's financial result (to higher or lower values), since in the case of certain companies amortization is one of the major costs. That is especially noticeable in the case of companies that own very valuable equipment and buildings. When it comes to the company observed in this paper, it is difficult to make conclusions about the impact of amortization on the financial statements and the financial result of the business because the company did not specify in its financial statments which amortization rates were used for the purposes of calculating amortization.