Final answer:
The change in the estimated life of machinery is a change in accounting estimate, which is dealt with prospectively and does not require prior financial statements to be revised. A disclosure note is required to explain the nature and effect of the change. The depreciation for 2021 is calculated to be $97,000 based on the revised remaining life of the asset.
Step-by-step explanation:
The change in the estimated life of machinery that Peridot Company is dealing with is a change in accounting estimate. This type of change occurs when new information or better insight requires a company to reassess its assumptions about the future benefits of assets.
Peridot is not required to revise prior years' financial statements for a change in accounting estimate. These changes are accounted for prospectively, meaning they affect the financial statements of the current and future periods.
Peridot is required to disclose the change in accounting estimate in the notes of the financial statements. The disclosure should include the nature of the change, the reason for the change, and the effect on the financial statements.
For the depreciation in 2021, the remaining book value after depreciation in 2019 and 2020 is $970,000 - (2 * $194,000) = $582,000. Now, we need to spread this over the new remaining life of 6 years (8 total - 2 used), which is equal to $582,000 / 6 = $97,000 depreciation for 2021.