The Ultimate Guide to Innocent Spouse Relief, Divorce & Taxes

Innocent spouse relief under IRC §6015 removes joint liability for tax on a joint return when one spouse should not fairly be held responsible for an understatement caused by the other spouse’s errors or omissions. Three types: §6015(b) traditional relief, §6015(c) separation of liability, and §6015(f) equitable relief. The request is made on Form 8857 (Request for Innocent Spouse Relief). Relief, if granted, removes the liability for the requesting spouse — the non-requesting spouse remains liable.

(1) §6015(b) traditional relief: requires that the understatement was caused by the other spouse, the requesting spouse did not know and had no reason to know, and it would be inequitable to hold them liable. (2) §6015(c) separation of liability: allocates the deficiency between divorced/separated/widowed spouses based on which spouse’s items caused the understatement. (3) §6015(f) equitable relief: a catch-all for cases that don’t fit (b) or (c), including underpayment cases where the tax was reported correctly but never paid.

Common requirements: joint return filed; understatement caused by the non-requesting spouse’s items (or unpaid liability for §6015(f)); requesting spouse did not know or have reason to know of the understatement or, for §6015(f), would suffer economic hardship; granting relief would be equitable. The IRS evaluates ‘reason to know’ by what a reasonable person in the requesting spouse’s circumstances would have known. Knowledge of the underlying transaction (signing a return showing it) is highly persuasive against innocent-spouse status.

Form 8857 is the IRS application for innocent spouse relief. The form asks for information about both spouses, the tax years at issue, the understatement (or underpayment for §6015(f)), the requesting spouse’s knowledge and circumstances, current marital status, and economic circumstances. Filing Form 8857 starts a process: the IRS sends Form 8857 to the non-requesting spouse, who has 60 days to provide information; the IRS then makes a preliminary determination, both spouses can appeal, and unresolved cases go to U.S. Tax Court under IRC §6015(e).

For §6015(b) and (c) relief: within two years of the IRS’s first collection activity against the requesting spouse (Rev. Proc. 2003-19). For §6015(f) equitable relief: under Rev. Proc. 2013-34, no specific two-year deadline applies — relief can be requested any time the collection statute is open. The two-year rule for (b) and (c) is strictly applied. Missing it forecloses traditional and separation-of-liability relief, leaving only the equitable path.

Divorce does not automatically separate joint tax liability for jointly filed returns — the IRS can collect the entire balance from either ex-spouse regardless of who caused the underpayment or what the divorce decree says. The divorce decree binds the two spouses but does not bind the IRS. Innocent spouse relief is the federal-tax mechanism for separating the liability post-divorce. State law remedies (indemnification under the divorce decree) may exist between the ex-spouses but are separate from the federal IRS process.

§6015(c) separation of liability is available only to divorced, legally separated, widowed, or living-apart spouses. It allocates the deficiency between spouses based on whose items caused it — the requesting spouse pays the portion attributable to their items, the non-requesting spouse pays the rest. §6015(f) equitable relief is broader and applies when neither (b) nor (c) fits — most underpayment cases (where the return was correct but the tax wasn’t paid) go through (f). (f) is fact-driven and weighs multiple factors.

Yes. Under IRC §6015(e)(4), the non-requesting spouse has the right to participate in the proceedings — they receive notice of the Form 8857 filing, can provide information to the IRS, and can intervene in Tax Court if the case proceeds there. The IRS will not approve innocent spouse relief without giving the non-requesting spouse an opportunity to respond. Practical effect: filing Form 8857 typically generates an immediate communication to your ex-spouse, which can have downstream consequences in the divorce dynamics.