Innocent Spouse Relief: When You're Not Liable for Their Tax

You signed a joint return, so you figure the tax bill is a shared thing: half his, half yours, and if there's a problem the two of you sort it out between yourselves. That's the reasonable assumption almost everyone walks in with. It's also wrong, and the gap between what you assumed and what the law actually says is where a lot of people get hurt.

When you file a joint return, you and your spouse are each liable for the entire tax, not your "share" of it. The term is joint and several liability, and it comes straight from §6013(d)(3): both spouses are responsible for the tax "jointly and severally." The IRS can collect 100% of the balance from either one of you. It does not care whose W-2 the income came from, who signed the return first, or that you've since divorced and he agreed in the decree to pay it.

That's the trap. Innocent spouse relief under §6015 is the way out of it, and it's narrower than most people hope but wider than most people fear.

Does filing jointly make you liable for your spouse's tax?

Yes. Filing a joint return makes you fully liable for the entire tax shown on that return and for any deficiency the IRS later assesses, regardless of who earned the income or claimed the deductions. That's §6013(d)(3) in one sentence.

The practical consequences are worse than the abstract rule. A divorce decree that says your ex "shall be responsible for all federal tax liabilities" binds the two of you in state court. It does not bind the IRS. The IRS was not a party to your divorce and is free to levy your wages or your bank account for a balance your ex-spouse promised to pay. You would then have to sue your ex to enforce the decree, which is a state-court problem, not a fix for the levy.

So the question stops being "whose tax is this" and becomes "can I get out from under the joint liability." That's what §6015 answers.

What are the three types of innocent spouse relief?

There are three distinct roads under §6015, and they solve different problems:

1. §6015(b), traditional innocent spouse relief. This is for an understatement of tax caused by your spouse's erroneous item (unreported income, an inflated deduction) that you did not know about and had no reason to know about. You have to show it would be inequitable to hold you liable.
2. §6015(c), separation of liability. If you're divorced, legally separated, widowed, or have lived apart from your spouse for the 12 months before you request relief, you can elect to split the deficiency as if you had filed separately. Your portion sticks to you; your ex's portion goes to your ex.
3. §6015(f), equitable relief. The catch-all. If you don't qualify under (b) or (c), the IRS can still grant relief when, taking all the facts and circumstances into account, it would be unfair to hold you liable. This is the only one of the three that reaches an underpayment (tax correctly reported but never paid), not just an understatement.

The distinction between an understatement and an underpayment matters more than it sounds. If the return was accurate but the balance simply never got paid, subsections (b) and (c) don't help you at all. Only (f) does.

The moment the misconception got expensive

A dental hygienist came to me two years after her divorce with a CP504 notice, an intent to levy, for just under $41,000. The returns in question were joint, filed while she was married. The income driving the balance was her then-husband's: he ran a cash-heavy contracting business and, it turned out, had been skimming and underreporting for years. She had a W-2, she had her paycheck deposited, and she had signed the returns he and his preparer put in front of her at the kitchen table every April.

Her decree said, in plain language, that he was responsible for "any and all tax deficiencies." She'd assumed that closed the matter.

It didn't touch it. The CP504 was addressed to her because the IRS could reach her, and reaching her was easier than reaching a contractor with no bank account it could find. The complication was that she'd handled the household bookkeeping and had signed a couple of the deposit slips for his business, which cut against the "no reason to know" standard under §6015(b). We went the §6015(c) route instead, separation of liability, since she was divorced and the erroneous items were clearly allocable to him. We filed Form 8857, documented the divorce, the source of the underreported income, and her separate finances. The IRS allocated the bulk of the deficiency to him and released her from roughly $34,000 of it. Not a clean 100%, but the levy against her paycheck went away.

Had she come in when the first CP2000 arrived instead of after the divorce, we'd have had more options and a calmer file. Timing is not neutral here.

Is there a deadline for innocent spouse relief?

For relief under §6015(b) and §6015(c), yes: you generally must file Form 8857 within two years after the IRS first begins collection activity against you. That first collection action is usually a levy notice or an offset of your refund, not the original assessment.

Equitable relief under §6015(f) is more forgiving. Under Rev. Proc. 2013-34, a request for equitable relief can be made any time before the collection statute of limitations expires (generally 10 years from assessment under §6502), or, if you're seeking a refund, within the refund limitations period of §6511. That expansion came after the IRS lost the fight to impose the two-year clock on equitable claims, and it's why (f) is sometimes the only door still open years down the line.

Either way, you file the same form: Form 8857, Request for Innocent Spouse Relief. One form, and the IRS decides which subsection fits your facts, though you should know going in which one you're building toward.

Does the IRS tell your spouse you filed?

Yes, and there's no way around it. When you file Form 8857, the law requires the IRS to notify the other spouse (or former spouse) and give that person a chance to participate in the proceeding. That's §6015(e)(4) and the fairness principle behind it: the person you're trying to shift liability to gets to weigh in.

For someone leaving an abusive or controlling marriage, that notification is a real and legitimate fear. The IRS will not disclose your new address, phone number, or employer to the other spouse. But the fact that you filed, and the tax years at issue, will reach them. If abuse is part of your situation, say so on the form and in your statement. Abuse and financial control are explicit factors that weigh in your favor under Rev. Proc. 2013-34, precisely because they undercut the assumption that you freely knew and agreed to what was on the return.

What if you're still married and just want your own refund protected?

If you're not trying to escape a past joint liability but simply don't want your refund grabbed for your spouse's separate pre-marriage debt (back child support, a defaulted student loan, an old tax balance that's solely theirs), that's a different form. File Form 8379, Injured Spouse Allocation, to claim back your portion of a joint refund that was offset.

Injured spouse and innocent spouse get confused constantly because the names rhyme. They are not the same. Injured spouse (Form 8379) protects your share of a refund from your spouse's separate debts. Innocent spouse (Form 8857) relieves you of joint liability for a tax you'd otherwise owe. If you're not sure which one you need, that's the sort of thing worth a short conversation before you file the wrong one and wait six months for the answer.

Every one of these paths turns on your specific facts and, for the equitable factors, on how the story is told. Talk to a representative or your attorney before you decide which subsection you're arguing, and don't let a levy notice sit while the two-year clock runs.

Sources

• IRC §6013(d)(3), joint and several liability on a joint return
• IRC §6015(b), (c), (f), innocent spouse relief, separation of liability, and equitable relief
• IRC §6015(e)(4), notice to the non-requesting spouse
• IRC §6502, collection statute of limitations
• IRC §6511, period of limitations on refund claims
• Rev. Proc. 2013-34, factors and timing for equitable relief under §6015(f)
• Form 8857, Request for Innocent Spouse Relief
• Form 8379, Injured Spouse Allocation
• Notice CP504, Notice of Intent to Levy; Notice CP2000, proposed changes