Joint Tax Liability Is Absolute — Unless You Qualify for Innocent Spouse Relief

When you sign a joint tax return, you agree to be responsible for the entire tax liability on that return — not just your share, but all of it. This is called “joint and several liability,” and it means the IRS can collect 100% of the tax debt from either spouse, regardless of who earned the income or who made the errors.

This rule creates devastating consequences when one spouse underreports income, claims fraudulent deductions, or fails to pay the tax due. The other spouse — who may have known nothing about the errors — is on the hook for the full amount, including penalties and interest. Divorce does not change this. A divorce decree that assigns the tax debt to one spouse does not bind the IRS. They will still pursue the “innocent” spouse.

Three Types of Relief Under IRC § 6015

Innocent Spouse Relief (IRC § 6015(b)) applies when your spouse (or former spouse) understated the tax due on a joint return, and you did not know and had no reason to know about the understatement. If granted, you are relieved of the tax, interest, and penalties attributable to the understatement. This type of relief applies to underpayments resulting from errors on the return itself.

Separation of Liability Relief (IRC § 6015(c)) allocates the understatement between you and your spouse based on who was responsible for which items. This relief is available only if you are divorced, legally separated, widowed, or have not lived with your spouse during the 12 months before filing the request. The allocation essentially treats each spouse as if they filed a separate return.

Equitable Relief (IRC § 6015(f)) is a catch-all provision for cases that do not qualify under the other two types. It applies to both understatements (errors on the return) and underpayments (correct return but unpaid tax). The IRS considers multiple factors, including whether you are divorced or separated, whether you would suffer economic hardship without relief, whether you knew or should have known about the issue, and whether the other spouse has a legal obligation to pay the debt.

The Two-Year Deadline — And the Exception for Equitable Relief

For innocent spouse relief under IRC § 6015(b) and separation of liability under § 6015(c), you must file Form 8857 (Request for Innocent Spouse Relief) within two years of the date the IRS first began collection activity against you. Missing this deadline bars you from these two types of relief permanently.

However, equitable relief under § 6015(f) does not have the same two-year deadline. Revenue Procedure 2013-34 eliminated the two-year time limit for equitable relief claims. This means that even if you missed the deadline for traditional innocent spouse relief or separation of liability, you may still qualify for equitable relief.

How We Build Innocent Spouse Cases

Innocent spouse cases are intensely factual. The IRS examines your knowledge, involvement in financial decisions, education level, health, whether you benefited from the understatement, and your current financial situation. They may interview you and your spouse separately. At Brotman Law, we prepare comprehensive packages with detailed statements, supporting documentation, and legal memoranda that address every factor the IRS considers. We have successfully obtained innocent spouse relief for clients facing tax debts ranging from $15,000 to over $2 million.