Legislation signed in March allows taxpayers who earned less than $150,000 in modified adjusted gross income to exclude unemployment compensation up to $20,400 if married filing jointly and $10,200 for all other eligible taxpayers. The legislation excludes only 2020 unemployment benefits from taxes.

For those taxpayers who already have filed and figured their tax based on the full amount of unemployment compensation, the IRS will determine the correct taxable amount of unemployment compensation and tax. Any resulting overpayment of tax will be either refunded or applied to other outstanding taxes owed.

The IRS will do these recalculations in two phases, starting with those taxpayers eligible for the up to $10,200 exclusion. The IRS will then adjust returns for those married filing jointly taxpayers who are eligible for the up to $20,400 exclusion and others with more complex returns.
 
The IRS stresses that there is no need for taxpayers to file an amended return unless the calculations make the taxpayer newly eligible for additional federal credits and deductions not already included on the original tax return.

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