Substitute for Return (SFR)
Yes, if you do not file your unfiled tax return, the IRS will file a Substitute for Return (SFR) on your behalf. An SFR is a temporary, basic calculation based only on third-party income records (W-2s, 1099s), often excluding deductions or credits, resulting in a higher tax bill than you might actually owe.
Step 2
Reduced Deductions:
The IRS usually files you as "Single" or "Married Filing Separately" with only the standard deduction, omitting dependents, business expenses, or credits (e.g., Earned Income Tax Credit).
What You Should Know About IRS SFR's
Step 1
The IRS sends multiple notices during their Taxpayer Delinquency Investigation (e.g., CP59, CP516) before generating an SFR
Step 3
High Tax & Penalties:
Because deductions are missed, the assessed liability is often higher. Interest and failure-to-file penalties start accumulating immediately.
Collection Actions:
The IRS will send a Notice of Deficiency (often CP3219N) giving you 90 days to respond. If ignored, they can start garnishing wages or placing liens
Step 4