Italy General Inquiry on depreciation of assets

[Odise]

I would like to know what happens to the useful life in depreciation method formulas when we change the evaluation during the life of the asset. For example, changing from straight-line-depreciation (asset value- residual value)*(1/useful life) to double-declining-depreciation (asset value- accumulated depreciation)*(2/useful life) what are the effects? And more importantly does the "useful life" in the second formula becomes the remaining life of the asset minus the years it was already used under straight-line-depreciation?

 

[Edith]

reducing balance method of depreciation

 

[DTA93433]

U.S. GAAP: A change from straight-line method of depreciation to double-declining balance method is considered a change in an accounting estimate (per FAS 154) that is accounted for by prospectively. The remaining useful life of the asset is used in calculating future depreciation expense.

 

[Fidget]

That's the same treatment as UK GAAP and IFRS.

I think though, that the more interesting question is... why has it been changed?