Which Tax Documents Should I Save, Which Should I Shred?

From the Kiplinger website

The IRS, which is dealing with a backlog of unprocessed tax returns dating back to 2020, has urged taxpayers to file their returns electronically. But filing electronically doesn’t stop the clock on potential audits, nor on your right to file an amended return. 

Generally, the IRS has three years from the date you file to audit your return. You also have three years to file an amended return. That means for the 2021 tax season, for instance, you should hold on to your Form W-2s and any 1099 forms generated from freelance income, unemployment benefits or investment income (such as taxable dividends, capital gains and interest), records relating to a 401(k) rollover or other retirement information, and receipts for deductible expenses until at least 2025. Some experts suggest keeping your documents for four years to be on the safe side.