Sum of the digits depreciation

An asset costs €10,000 and is expected to be sold for €2,000 after four years. Depreciation is to be provided over four years using the sum of the digits method.

Year 1

Cost
Depreciation at 4/10 of €8,000 Net book value

10,000 3,200 6,800

Year 2

Depreciation at 3/10 of €8,000 Net book value

2,400
4,400

Year 3

Depreciation at 2/10 of €8,000 Net book value

1,600
2,800

Year 4

Depreciation at 1/10 of €8,000 Net book value

800
2,000