Depreciation is a very common term in the case of assets. In general, it is the decline of an asset over a certain period of time. There are many methods to calculate any assetâ€™s depreciation. In this article, I will describe the SLM method of depreciation formula in Excel.

Actually, Excel has many wonderful functions related to depreciation. Here, for conducting the session, I will use *Microsoft 365* version.

**Table of Contents**hide

## What Is SLM Depreciation?

SLM depreciation denotes Straight Line Method depreciation. Basically, SLM depreciation means a fixed amount of deduction from the assets after each period. Here, the period should be yearly based.

The basic 3 terms of SLM depreciation are *Initial Cost, Salvage value*, and *Useful Life*. Firstly, the *Initial cost* is the total cost for an asset. Secondly, the *Salvage value *is the value of the asset at the end of the depreciation period. Thirdly, the lifetime of that asset is called the *Useful Life.*

## How to Use SLM Method of Depreciation Formula in Excel: 2 Methods

Here, I will demonstrate 2 suitable methods with detailed steps about the Straight Line Method(SLM) of depreciation formula in Excel. For your better understanding, I am going to use the following dataset. Which contains some information like *initial cost, salvage value,* and* useful life*. The dataset is given below.

### 1. Generic Formula to Find SLM Depreciation in Excel

Here, you can use a generic formula to find out the straight-line method (SLM) depreciation in Excel. Basically, the traditional and simplest formula is:

**SLM Depreciation = (Initial Cost â€“ Salvage Value)/Useful Life**

Now, using the above formula, I will calculate the *straight-line method (SLM) depreciation* in Excel. So, letâ€™s see the steps.

**Steps:**

- Firstly, you must select a new cell
**E5**where you want to keep the result. - Secondly, you should use the formula given below in the
**E5**cell.

`=(C4-C5)/C6`

Where **C4** is the initial cost, **C5** is the salvage value and** C6** is useful life.

- Then, press
**ENTER**to get the*SLM depreciation*.

Now, I will find the ending value after each period of the asset.

- So, prepared a table like below.
- Then, write the SLM depreciation in the column named
*Depreciation.*

`=$E$5`

*Â Here, you must use the Dollar sign ($) as the type of depreciation is SLM depreciation.*

`=D9`

In this cumulative depreciation column, I will add all the depreciation of the previous period.

- Then, use the corresponding formula given below to find the ending value after
**1**year.

`=C9-E9`

- After that, press
**ENTER**.

Now, I will the ending value after 2 years.

- Firstly, write the following formula in the
**C10**cell.

`=F9`

Here, the ending value of previous year will be the starting value of present year.

- Secondly, press
**ENTER**.

- Then, enter the SLM depreciation in the
**D10**cell and press**ENTER**.

`=$E$5`

- Then, use the following formula in the
**E10**cell to find the*cumulative depreciation*.

`=E9+D10`

- Subsequently, press
**ENTER**.

- Then, write down the corresponding formula in the
**F10**cell.

`=C10-D10`

- Subsequently, press
**ENTER**.

- Now, select the cells
**C10:F10**. - Then, you can drag the
**Fill Handle**icon to**AutoFill**the corresponding data in the rest of the cells**C11:F13**.

Lastly, you will get per-year ending values.

Here, if you notice, then you will see that the last cumulative depreciation is actually the difference between initial cost and salvage value. Furthermore, the last ending value of the depreciation period is the salvage value.

**Read More: **How to Calculate Accumulated Depreciation in Excel

### 2. Employing Formula of SLN Function to Get Depreciation in Excel

Basically, Excel has its own function to find out the *straight-line method (SLM) depreciation* which is **the SLN function**. Now, Iâ€™ll show you how to use this **SLN** function. So, letâ€™s see the steps.

**Steps:**

- Firstly, you must select a new cell
**E5**where you want to keep the SLM depreciation. - Secondly, you should use the formula given below in the
**E5**cell.

`=SLN(C4,C5,C6)`

Where the initial cost is **C4**, the salvage value is **C5**, and useful life is **C6.**

- Thirdly, press
**ENTER**.

- Now, to find the details of each period prepared a table like below.
- Then, write the SLM depreciation in the column named
*Depreciation.*

`=$E$5`

*Â Here, you must use the Dollar sign ($) as the type of depreciation is SLM depreciation.*

- Consequently, enter the following cell reference in the
**E9**cell.

`=D9`

In this cumulative depreciation column, I will add all the depreciation of the previous period. As this is the 1st period so I have to use only the** D9 **cell value.

- Then, use the corresponding formula given below to find the ending value after 1 year.

`=C9-E9`

- After every formula, you must press
**ENTER**.

- Then, do the same for the 2nd year. Here, just you have to add the previous cumulative depreciation.
- Lastly, after completing 2nd row, you may use the
**Fill Handle**icon for the rest of the cells.

**Read More: **How to Use Formula to Calculate Car Depreciation in Excel

## How to Use WDV Method of Depreciation Formula in Excel

Actually, for calculating the depreciation, you can use two methods. They are Straight Line Method (SLM) depreciation and Written Down Value (WDV) depreciation. Basically, you may apply this WDV method for a constant rate of depreciation to the net value in respect of calculating assets each year. This formula is also named as *Diminishing Balance Method* or Declining Balance Method.

So, in this section, I will explain how to* calculate this WDV method of depreciation in Excel*. To do so, I will use **the DB function**. Now, letâ€™s see the steps.

**Steps:**

- First, in cell
**D9**write the formula.

`=DB($C$4,$C$5,$C$6,B9)`

Where the initial cost is **C4**, the salvage value is **C5**, useful life is **C6**, and** **the period is** B9**.

- Then, press
**ENTER**.

- Then, follow the steps of
**method-1**and you will get the depreciation details.

If you notice, then you will get the difference between SLM and WDV methods. Actually, the depreciation is not fixed here. Instead of being fixed, the depreciation is decreasing at a fixed rate.

**Read More: **How to Apply Declining Balance Depreciation Formula in Excel

## Practice Section

Now you can practice the explained methods by yourself.

**Download Practice Workbook**

You can download the *Practice Workbook* that we used to prepare this article. Furthermore, you can change or modify data & find new outputs accordingly.

## Conclusion

I hope you found this article helpful. Here, I have explained 2 suitable methods of the *SLM Depreciation formula* in Excel. Please, drop comments, suggestions, or queries if you have any in the comment section below.