Depreciation Calculation
This document helps you understand the depreciation calculation in detail with suitable examples. Before that, here are a few terms that you should be aware of:
| Terms | Description |
|---|---|
| Purchase Value | The cost at which the asset was purchased. |
| Current Value | The asset’s value at the start of the depreciation period. |
| Salvage Value | The estimated value of the asset at the end of its useful life. |
| Depreciated Value | The value that is depreciated from the asset in every frequency (monthly or yearly). |
| Depreciable Value | The value that can be depreciated from the asset’s current value, and is calculated as: Depreciable Value = Current Value - Salvage Value. |
Now, let us have a look at how depreciation is calculated for a fixed asset you record in Zoho Books. There are two types of depreciation methods:
Straight Line Depreciation
In this depreciation method, the asset will be depreciated in two ways:
Pro Rata
Depreciated Value = (Depreciable Value / Remaining No. of Depreciation days) * No. of Days in Current Depreciation
where,
Depreciable Value = Current Value - Salvage Value
Remaining No. of Depreciation Days: The total number of days remaining for the asset to get fully depreciated.
No. of Days in Current Depreciation: The total number of days in the selected frequency (monthly/yearly) for depreciation.
Non-Pro Rata
Depreciated Value = Depreciable Value / Remaining Life Period
where,
Remaining Life Period: The total number of years or months between current depreciation’s start date and asset’s depreciation end date.
Declining Balance Method
In this depreciation method, the asset will be depreciated in two ways:
Pro Rata
Depreciated Value = ((Depreciable Value * Percentage/100) / No. of Days in the Given Year) * No. of Days
where,
Percentage: The percentage provided for the declining balance method, calculated annually.
No. of Days in the Given Year: The total number of days in that particular year.
No. of Days: The total number of days in that particular depreciation period.
Non-Pro Rata
Annual Depreciation = Depreciable Value * Percentage/100
where,
Percentage: The percentage provided for the declining balance method.
This is used to calculate the annual depreciation of a fixed asset. To calculate the asset’s monthly depreciation:
Monthly Depreciation = Annual Depreciation / 12
Examples
Straight Line Method for Yearly Asset Depreciation on a Non-Pro Rata Basis
| Frequency | Computation Type | Start Date | Total Life Period | End Date |
|---|---|---|---|---|
| Yearly | Non-Pro Rata | 01/01/2020 | 60 | 31/03/2024 |
If the current value of the asset is $10,000, and the fiscal year you follow in your organization is April to March.
With respect to the current value of the asset, let us start depreciating the asset using the Straight Line Method.
As the frequency of depreciation is given as Yearly, convert the total life period to years.
Total Life Period = 60/12 = 5
Therefore, total life period is 5 years.
In March 2020, the value of the asset will be:
Depreciated Value = Depreciable Value / Remaining Life Period
Depreciated Value = 10,000 / 5
Depreciated Value = 2,000
Current Asset Value = 10,000 - 2,000 = 8,000
Therefore, by the end of March 2020, the current value of the asset will be $8,000.
In March 2021, the value of the asset will be:
Depreciated Value = Depreciable Value / Remaining Life Period
Depreciated Value = 8,000 / 4
Depreciated Value = 2,000
Current Asset Value = 8,000 - 2,000 = 6,000
Therefore, by March 2021, the current value of the asset will be $6,000.
In March 2022, the value of the asset will be:
Depreciated Value = Depreciable Value / Remaining Life Period
Depreciated Value = 6,000 / 3
Depreciated Value = 2,000
Current Asset Value = 6,000 - 2,000 = 4,000
Therefore, by March 2022, the current value of the asset will be $4,000.
In March 2023, the value of the asset will be:
Depreciated Value = Depreciable Value / Remaining Life Period
Depreciated Value = 4,000 / 2
Depreciated Value = 2,000
Current Asset Value = 4,000 - 2,000 = 2,000
Therefore, by March 2023, the current value of the asset will be $2,000.
In March 2024, the value of the asset will be:
Depreciated Value = Depreciable Value / Remaining Life Period
Depreciated Value = 2,000 / 1
Depreciated Value = 2,000
Current Asset Value = 2,000 - 2,000 = $0
Therefore, by the end of March 2024, the current value of the asset becomes 0 or reaches its salvage value, which means that the asset’s useful life is complete or the asset is completely depreciated.
Straight Line Method for Monthly Asset Depreciation on a Non-Pro Rata Basis
| Frequency | Computation Type | Start Date | Total Life Period | End Date |
|---|---|---|---|---|
| Monthly | Non-Pro Rata | 01/04/2020 | 30 | 30/09/2022 |
For the above case, the depreciation is calculated on a Monthly basis using the Straight Line Method.
In April 2020, the value of the asset will be:
Depreciated Value = 10,000 / 30 = 333.33
Current Asset Value = 10,000 - 333.33 = 9666.67
Therefore, by the end of April 2020, the current value of the asset will be $9666.67
In May 2020, the value of the asset will be:
Depreciated Value = 9666.67 / 29 = 333.33
Current Asset Value = 9666.67 - 333.33 = 9333.34
Therefore, by the end of May 2020, the current value of the asset will be $9333.34
In June 2020, the value of the asset will be:
Depreciated Value = 9333.34 / 28 = 333.33
Current Asset Value = 9333.34 - 333.33 = 9000.01
Therefore, by the end of June 2020, the current value of the asset will be $9000.01
When you keep depreciating the asset in this way, the current value of the asset at the end of September 2022 will become 0 or reaches its salvage value, which means that the asset’s useful life is complete or the asset is completely depreciated.
Straight Line Method for Yearly Asset Depreciation on a Pro Rata Basis
| Frequency | Computation Type | Start Date | Total Life Period | End Date |
|---|---|---|---|---|
| Yearly | Pro Rata | 01/01/2020 | 60 | 31/12/2024 |
For the above case, the depreciation is calculated on a Yearly basis using the Straight Line Method.
The remaining number of depreciation days (until 31/12/2024) = 1827.
As the financial year ends by March 2020, the depreciation is calculated for the first three months (01/01/2020 to 31/03/2020) separately.
So, the number of days in the current depreciation = 91.
In March 2020, the value of the asset will be:
Depreciated Value = (Depreciable Value / Remaining No. of Depreciation Days) * The No. of Days in the Current Depreciation
Depreciated Value = (10000 / 1827) * 91
Depreciated Value = 5.4375 * 91
Depreciated Value = 498.09
Therefore, the current value of the asset at the end of 2020 = 10000 - 498.09 = $9501.91
In March 2021, the value of the asset will be:
Depreciated Value = (Depreciable Value / Remaining No. of Depreciation Days) * The No. of Days in the Current Depreciation
Depreciated Value = (9501.91 / 1736) * 365
Depreciated Value = 5.4735 * 365
Depreciated Value = 1997.83
Therefore, the current value of the asset at the end of 2021 = 9501.91 - 1997.83 = $7504.08
In March 2022, the value of the asset will be:
Depreciated Value = (Depreciable Value / Remaining No. of Depreciation Days) * The No. of Days in the Current Depreciation
Depreciated Value = (7504.08 / 1371) * 365
Depreciated Value = 5.4735 * 365
Depreciated Value = 1997.91
Therefore, the current value of the asset at the end of 2022 = 7504.08 - 1997.91 = $5506.17
When you keep depreciating the asset this way, the current value of the asset at the end of December 2025 will become 0 or reaches its salvage value, which means that the asset’s useful life is complete or the asset is completely depreciated.
Straight Line Method for Monthly Asset Depreciation on a Pro Rata Basis
| Frequency | Computation Type | Start Date | Total Life Period | End Date |
|---|---|---|---|---|
| Monthly | Pro Rata | 01/01/2020 | 13 | 01/01/2021 |
For the above case, the depreciation is calculated on a Monthly basis using the Straight Line Method.
The total number of remaining days (until the asset’s useful life) = 397 days.
By the end of January 2020, the value of the asset will be:
Depreciated Value = (Depreciable Value / Remaining No. of Depreciation Days) * The No. of Days in the Current Depreciation
Depreciated Value = (10000 / 397) * 31
Depreciated Value = 25.1889 * 31
Depreciated Value = 780.8559
Therefore, the current value of the asset (until January 2020) = 10000 - 780.8559 = $9219.1441
By the end of February 2020, the value of the asset will be:
Depreciated Value = (Depreciable Value / Remaining No. of Depreciation Days) * The No. of Days in the Current Depreciation
Depreciated Value = (9219.1441 / 366) * 29
Depreciated Value = 25.1889 * 29
Depreciated Value = 730.4781
Therefore, the current value of the asset (until February 2020) = 9219.1441 - 730.4781 = $8488.666
When you keep depreciating the asset this way, the current value of the asset at the end of January 2021 will become 0 or reaches its salvage value, which means that the asset’s useful life is complete or the asset is completely depreciated.
Declining Balance Method for Yearly Asset Depreciation on a Non-Pro Rata Basis
| Frequency | Computation Type | Start Date | Total Life Period | End Date |
|---|---|---|---|---|
| Yearly | Non-Pro Rata | 01/01/2020 | 60 | 31/03/2024 |
The current value of the asset is $10,000, and the fiscal year you follow in your organization is April to March.
With respect to the current value of the asset, let us start depreciating the asset using the Declining Balance Method.
The Depreciation Percentage = 20% = 20 / 100 = 0.20
By the end of March 2020, the value of the asset will be:
Depreciated Value = Depreciable Value * Percentage/100
Depreciated Value = 10000 * 0.20
Depreciated Value = 2000
Therefore, the current value of the asset is 10000 - 2000 = $8000.
By the end of March 2021, the value of the asset will be:
Depreciated Value = Depreciable Value * Percentage/100
Depreciated Value = 8000 * 0.20
Depreciated Value = 1600
Therefore, the current value of the asset is 8000 - 1600 = $6400.
When you keep depreciating the asset this way, the current value of the asset at the end of March 2024 will become 0 or reaches its salvage value, which means that the asset’s useful life is complete or the asset is completely depreciated.
Declining Balance Method for Monthly Asset Depreciation on a Non-Pro Rata Basis
| Frequency | Computation Type | Start Date | Total Life Period | End Date |
|---|---|---|---|---|
| Monthly | Non-Pro Rata | 01/01/2020 | 13 | 31/01/2021 |
With respect to the current value of the asset, let us start depreciating the asset using the Declining Balance Method.
To calculate the asset’s monthly depreciation using the declining balance method, find the annual depreciation value and divide it by 12.
The depreciated value at the end of January 2020 will be:
Depreciated Value (annual) = 10000 * 0.20 = 2000
Now, Depreciated Value (monthly) = 2000 / 12 = 166.67
The current value of the asset = 10000 - 166.67 = $9833.33
The asset’s value at the end of February 2020 will be:
Depreciated Value (monthly) = 2000 / 12 = 166.67
The current value of the asset = 9833.33 - 166.67 = $9666.66
The asset’s value at the end of March 2020 will be:
Depreciated Value (monthly) = 2000 / 12 = 166.67
The current value of the asset = 9666.66 - 166.67 = $9499.99
The asset’s value at the end of April 2020 will be:
Depreciated Value (annual) = 9499.99 * 0.20 = 1899.99
Depreciated Value (monthly) = 1899.99 / 12 = 158.33
The current value of the asset = 9499.99 - 158.33 = $9341.66
When you keep depreciating the asset this way, the current value of the asset at the end of January 2021 will become 0 or reaches its salvage value, which means that the asset’s useful life is complete or the asset is completely depreciated.
Declining Balance Method for Yearly Asset Depreciation on a Pro Rata Basis
| Frequency | Computation Type | Start Date | Total Life Period | End Date |
|---|---|---|---|---|
| Yearly | Pro Rata | 01/01/2020 | 60 | 31/12/2024 |
The number of days in the current year = 366
The number of days in the current depreciation period = 91
The asset’s value at the end of March 2020 will be:
Depreciated Value = ((Depreciable Value * Percentage/100) / No. of Days in the Given Year) * No. of Days
Depreciated Value = ((10000 * 0.20) / 366 ) * 91
Depreciated Value = (2000 / 366) * 91
Depreciated Value = 5.464 * 91
Depreciated Value = 497.224
The current value of the asset is 10000 - 497.224 = $9502.776
The asset’s value at the end of March 2021 will be:
Depreciated Value = ((Depreciable Value * Percentage/100) / No. of Days in the Given Year) * No. of Days
Depreciated Value = ((9502.776 * 0.20) / 365) * 365
Depreciated Value = (1900.555 / 365) * 365
Depreciated Value = 5.207 * 365
Depreciated Value = 1900.555
The current value of the asset is 9502.776 - 1900.555 = $7602.17
When you keep depreciating the asset this way, the current value of the asset at the end of December 2024 will become 0 or reaches its salvage value, which means that the asset’s useful life is complete or the asset is completely depreciated.
Declining Balance Method for Monthly Asset Depreciation on a Pro Rata Basis
| Frequency | Computation Type | Start Date | Total Life Period | End Date |
|---|---|---|---|---|
| Monthly | Pro Rata | 01/01/2020 | 13 | 31/01/2021 |
The number of days in the current year = 366
The number of days in the current depreciation period (January 2020) = 31
The asset’s value at the end of January 2020 will be:
Depreciated Value = ((Depreciable Value * Percentage/100) / No. of Days in the Given Year) * No. of Days
Depreciated Value = ((10000 * 0.20) / 366) * 31
Depreciated Value = (2000 / 366) * 31
Depreciated Value = 5.464 * 31 = 169.38
The current value of the asset = 10000 - 169.38 = $9830.6
The asset’s value at the end of February 2020 will be:
Depreciated Value = ((Depreciable Value * Percentage/100) / No. of Days in the Given Year) * No. of Days
Depreciated Value = ((10000 * 0.20) / 366) * 29
Depreciated Value = (2000 / 366) * 29
Depreciated Value = 5.464 * 29 = 158.45
The current value of the asset = 9830.6 - 158.45 = $9672.13
The asset’s value at the end of March 2020 will be:
Depreciated Value = ((Depreciable Value * Percentage/100) / No. of Days in the Given Year) * No. of Days
Depreciated Value = ((10000 * 0.20) / 366) * 31
Depreciated Value = (2000 / 366) * 31
Depreciated Value = 5.464 * 31 = 169.38
The current value of the asset at the end of the fiscal year = $9502.73
The asset’s value at the end of April 2020 will be:
Depreciated Value = ((Depreciable Value * Percentage/100) / No. of Days in the Given Year) * No. of Days
Depreciated Value = ((9502.73 * 0.20) / 366) * 30
Depreciated Value = (1900.55 / 366) * 30
Depreciated Value = 5.192 * 30 = 155.78
The current value of the asset = 9502.73 - 155.78 = $9346.95
When you keep depreciating the asset this way, the current value of the asset at the end of January 2021 will become 0 or reaches its salvage value, which means that the asset’s useful life is complete or the asset is completely depreciated.
