Innocent Spouse vs. Injured Spouse Router
By Forrest Baumhover, CFP®, EA · Last verified August 30, 2026
Answer once — find out whether a case calls for Form 8857 (Innocent Spouse Relief, IRC §6015) or Form 8379 (Injured Spouse Allocation, IRC §6402), with the IRC/Rev. Proc./IRM citation shown at every branch, not just the final answer.
What this router does
This router asks the threshold question first — is this a dispute about a joint liability, or about a refund taken to pay someone else’s debt — before routing into either mechanism’s own test. It shows the IRM or IRC citation behind every branch it passed through.
This router also does not repeat what the Federal Tax Desk’s own Refund Offset Guide (/taxpayers/refund-offset/) already covers — offset mechanics (IRS-internal offsets vs. Treasury Offset Program offsets) and how to dispute the underlying debt. This tool answers a narrower, different question: which relief FORM applies.
The decision this router makes
The first question sorts the case into one of two entirely separate legal mechanisms: a joint-liability dispute (IRC §6015, Form 8857) or a refund taken to pay a debt that belongs to only one spouse (IRC §6402, Form 8379) — the two forms address different problems and this router never confuses them.
The Form 8379 side asks whether the couple filed a joint return, whether the debt genuinely belongs to the other spouse alone, and whether the request is still timely (Instructions for Form 8379, 26 U.S.C. §6511) — a taxpayer in a community property state runs a separate allocation rule (Rev. Rul. 2004-71 through -74) before landing on the standard allocation.
The §6015 side tests three relief mechanisms in sequence, each with its own elements: §6015(b) traditional relief first, §6015(c) separation of liability next — available even with a disqualified asset transfer, just reduced — and §6015(f) equitable relief last, the catch-all for a case the first two do not reach. Equitable relief under Rev. Proc. 2013-34 explicitly recognizes abuse or financial control as a factor weighing toward relief, not against it, alongside the more common facts (no knowledge of the understated item, no longer married or separated). A joint return signed under actual duress raises a threshold question before any of these three tests even runs: whether the election is valid at all (Treas. Reg. §1.6015-1(b)). Every Form 8857 request carries one more fact: the IRS must tell the other spouse or former spouse that the requester filed Form 8857, even in abuse cases, but will not disclose the requester's current name, address, phone, or employer (Instructions for Form 8857).
Worked example: a jointly filed return, a debt belonging solely to the other spouse, a timely Form 8379 request, and no community-property complication routes through five questions — dispute type, joint return filed, debt ownership, timeliness, community property — to the standard Form 8379 allocation.
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