Straight Line Depreciation Calculator

Useful Life (Total Periods):
Months in First Period:
Depreciation for any 12 months:

Related Calculator:

Supporting calculations and Straight Line Depreciation Calculator at CalculatorSoup.com

Depreciation Schedule

Example - Cost: $11,000.00, Salvage: $1,000.00, Life: 5 years , First Year: 12 months

Period
 
Book Value
Period Start
Depreciation
Expense
Accumulated
Depreciation
Book Value
Period End
1 $11,000 $2,000 $2,000 $9,000
2 $9,000 $2,000 $4,000 $7,000
3 $7,000 $2,000 $6,000 $5,000
4 $5,000 $2,000 $8,000 $3,000
5 $3,000 $2,000 $10,000 $1,000

Straight-Line Depreciation Formula

The straight line calculation, as the name suggests, is a straight line drop in asset value.  The depreciation of an asset is spread evenly across the life.

  • Depreciation in Any Period = ((Cost - Salvage) / Life)
  • Partial year depreciation, when the first year has M months is taken as:
    • First year depreciation = (M / 12) * ((Cost - Salvage) / Life)
    • Last year depreciation = ((12 - M) / 12) * ((Cost - Salvage) / Life)
    • And, a life, for example, of 7 years will be depreciated across 8 years.

Straight-Line Depreciation Example

Suppose an asset for a business cost $11,000, will have a life of 5 years and a salvage value of $1,000.

  • Depreciation in Any Period = (($11,000 - $1,000) / 5 years) = $10,000 / 5 years = $2,000/ year.

Microsoft® Excel® Functions Equivalent: SLN

The Excel equivalent function for Straight-Line Method is SLN(cost,salvage,life) will calculate the depreciation expense for any period.  For a more accelerated depreciation method see, for example, our Double Declining Balance Method Depreciation Calculator.

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