The sum of the years’ digits (SYD) depreciation method depreciates an asset more quickly during the beginning of its life. Unlike the straight-line method, depreciation expense is different for every depreciation period. Depreciation is greater in the early periods and declines in each successive period.
See a table comparing the different depreciation methods.
Contents
Videos
Purpose
To return the value of one period of the sum of the years’ digits depreciation expense.
Similar Functions
SLN – Straight-line depreciation
DB – Declining balance depreciation
DDB – Double declining balance depreciation
Syntax
=SYD(cost,salvage,life,period)
cost
– The acquisition cost of the asset.salvage
– The amount you expect to receive in exchange for the asset at the end of its useful life. Typically, this is zero.life
– The number of periods you expect the asset to be in service. This unit can be months or years.period
– The period for which you are calculating depreciation expense. This must be in the same time unit aslife
(months or years).
Formulas

Examples
Example 1
You purchase an automobile for 36,000, expect it to last three years, and trade it in for 3,000.
A | B | C | |
1 | Data | Argument | Description |
2 | $36,000 | cost | acquisition cost |
3 | $3,000 | salvage | money back at the end of life |
4 | 3 | life | number of periods for the useful life |
5 | 1 | period | which period the expense is for |
Formula | Description | Result |
=SYD(A2,A3,A4,A5) | Depreciation expense for the first period | $16,500 |
=SYD(A2,A3,A4,2) | Depreciation expense for the second period | $11,000 |
=SYD(A2,A3,A4,3) | Depreciation expense for the final period | $5,500 |
Example 2
Next, let’s say you purchase a laptop computer for €3,000. You expect it to last 36 months and be worth €150 at the end of the two years.
Formula | Description | Result |
=SYD(3000,150,36,11) | Depreciation expense for month 11 | €111 |
Live Example in Sheets
In addition to these examples, go to this spreadsheet for a live version of the SYD function.