Double declining depreciation, also known as double-declining balance depreciation or reducing balance depreciation, is an accelerated depreciation method commonly used in accounting and finance. It allows businesses to allocate a larger portion of an asset’s cost to depreciation in the early years of its useful life, resulting in a higher tax deduction during those years. In this article, we will walk you through the steps on how to calculate double declining depreciation.

Step 1: Determine the Initial Book Value

The first step in calculating double declining depreciation is determining the initial book value of the asset. This is typically the acquisition cost or purchase price of the asset.

Step 2: Estimate the Residual Value

Next, estimate the residual value (also known as salvage value) of the asset at the end of its useful life. The residual value represents the expected worth of the asset after it has completed its useful life and can no longer be used for business operations.

Step 3: Determine the Useful Life

The third step is to determine the useful life of the asset. This estimation is based on either past business experiences or industry standards and often expressed in years.

Step 4: Calculate the Straight-Line Depreciation Rate

To calculate the double declining depreciation rate, you need first to find out the straight-line depreciation rate. You can determine this by dividing 1 by the useful life number. For example, if an asset has a useful life of 5 years, then its straight-line depreciation rate would be 1/5, or 20% per year.

Step 5: Compute Double Declining Depreciation Rate

Now that you have determined the straight-line depreciation rate take that percentage and multiply it by 2 to get your double declining depreciation rate. For instance, if your straight-line rate was 20%, then your double declining rate would be 40% (20% x 2).

Step 6: Calculate Annual Depreciation Expense

To calculate the annual depreciation expense, multiply double declining depreciation rate by the current book value of the asset. Subtract the annual depreciation expense from the beginning book value to determine the new book value at the end of each year. Continue this process until the book value of an asset equals its residual value or reaches the end of its useful life.

Conclusion

The double declining depreciation method is a useful tool for businesses looking to take advantage of accelerated tax deductions during an asset’s early years. By following these steps, you can effectively calculate double declining depreciation for your business assets. Remember that it