Longevity expenses are amortized within the relevant asset's duration starting from the year in which they are activated.
For example, if you relate a longevity expense of 1000 TRY in 2013 to an asset having a 5-year economic life and purchased in 2012, the main asset's life expires in 2015; however, depreciation is calculated until 2017 due to longevity expense.
Expenses Prolonging Economic Life of the Asset
(Normal Depreciation Method)

Purchase Year

Purchase Value

Depreciation Rate

Depreciation

Accumulated Depreciation

Net Book Value

2011

30.000,00

20

6.000,00

6.000,00

24.000,00

2012

30.000,00

20

6.000,00

12.000,00

18.000,00

2013

30.000,00

20

6.000,00

18.000,00

12.000,00

 

1.000,00

20

200,00

200,00

800,00

2014

30.000,00

20

6.000,00

24.000,00

6.000,00

 

1.000,00

20

200,00

400,00

600,00

2015

30.000,00

20

6.000,00

30.000,00


 

1.000,00

20

200,00

600,00

400,00

2016

30.000,00

20


30.000,00


 

1.000,00

20

200,00

800,00

200,00

2017

30.000,00

20


30.000,00


 

1.000,00

20

200,00

1.000,00