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substitute filed return
IRS SFR - Substitute Filed Returns
If you don't file your returns, The IRS may file for you.
When a taxpayer does not file a return for one year or many years, frequently the IRS will file the return(s) for them. When the IRS files a Substitute Filed Return (also known as an SFR) most of the time the taxpayer will end up owing significantly more in back taxes than if they had filed themselves.
