To get even more technical, the actual law is Public Law 116-260, "Consolidated Appropriations Act, 2021."
Division N of the law is titled ‘‘Coronavirus Response and Relief Supplemental Appropriations Act, 2021’’. This includes a number of items including adjustments to Medicare Reimbursements and changes to Unemployment Insurance.
Subtitle B of Division N is titled "COVID-related Tax Relief Act of 2020". This contains the second stimulus payment, extension to deferral of payroll taxes, and some technical corrections and clarifications to things like the taxability of small business loans that were forgiven. There is nothing here about retirement plans.
Division EE is titled the ‘‘Taxpayer Certainty and Disaster Tax Relief Act of 2020’’. This includes the extension of certain tax benefits, such as deductible mortgage insurance premiums, tax credits for energy efficient home improvements, and permanently restoring the 7.5% floor on deductible medical expenses. Title III of this act is the disaster relief portion, and what it seems to do is to extend several CARES act provisions to any other disaster that occurred in 2020 that was not COVID-related.
