The latest IRS Statistics of Income Bulletin (Publication 1304 (Rev. 11-2022) (irs.gov)) show that 164.4 million individual income tax returns were filed for 2020, or 4.2% more than in the previous tax year. Only 9.5% of all returns filed claimed itemized deductions; the vast majority used the applicable standard deduction amount.
The 2020 return reflected various COVID-19 related tax changes enacted by the CARES Act of 2020 and the American Rescue Plan Act of 2021, including:
Depreciation methods that allow faster write-offs than straight-line rates in the earlier periods of the useful life of an asset. For example, in the first few years of recovery, MACRS allows a 200% double declining balance write-off, twice the straight-line rate.