Unfiled Tax Returns and Back Taxes — Get Compliant Before the IRS Acts

Before any return is filed, the firm obtains your IRS transcripts under Form 2848. The wage and income transcript lists every W-2, 1099-NEC, 1099-INT, 1099-B, 1099-R, 1098 and similar form filed under your Social Security number, for the current year and nine prior years. The account transcript shows whether the IRS has assessed anything for a year, whether a substitute for return was prepared, what notices went out, and the date from which the collection statute runs.

This step changes the project. Someone who believes they have seven or eight bad years may find, for example, that some years show refunds, others modest balances, and one has already been assessed by the IRS on gross figures well above the real tax. The transcripts also show the gaps: a 1099-B reports gross proceeds with no basis, and reconstructing the basis is where most of the tax disappears.

The failure-to-file penalty is 5 percent of the unpaid tax per month or part-month, up to 25 percent, with a minimum of $525 for a return due in 2026 that is more than 60 days late. The failure-to-pay penalty is 0.5 percent per month, up to 25 percent, and the two are coordinated so the combined rate is 5 percent a month for the first five months. After that only the failure-to-pay penalty continues. Interest accrues on the tax and the penalties.

Two relief routes apply. First-time abatement removes the penalties for a single year when you were penalty-free for the prior three years and are now current on filing and payment. Reasonable-cause relief applies where illness, a death in the family, a disaster, reliance on bad professional advice or similar circumstances prevented compliance. For a multi-year filer the firm requests first-time abatement for the earliest eligible year and argues reasonable cause for the rest; who qualifies and how to ask are in our article on first-time penalty abatement.

Illinois requires Form IL-1040 for every year with a federal filing requirement, and the Department of Revenue receives federal return information under 26 U.S.C. 6103(d), so an unfiled federal year becomes an unfiled Illinois year. The three-year limit on an Illinois notice of deficiency (35 ILCS 5/905) runs from the date the return is filed; an unfiled year stays open.

Illinois offers a way in. Its Voluntary Disclosure Program, applied for on Form BOA-2, is open to taxpayers the Department has not already contacted or begun auditing. It limits the look-back period to four years and eliminates penalties once the tax and interest are paid within 60 days of billing. The Department's collection tools after assessment are described on the Illinois Department of Revenue page, and its authority to examine and assess is explained in our article on the Department's audit powers.

1. One professional sees the whole list

   The transcripts, the reconstruction of income and basis, the penalty analysis and the payment negotiation are one engagement, not a hand-off between the person who reconstructs the numbers and the lawyer who negotiates. Read more on the Attorney-CPA page.

2. Privilege from the first call

   Why the returns were not filed is often the most sensitive fact in the file. Told to a lawyer to get legal advice, it is privileged, and the analysis of criminal exposure is done inside that protection. Privilege covers what you tell us to get legal advice; the figures that go onto a return, and the work of preparing it, are not privileged even when a lawyer does the work. That is why the exposure analysis is kept separate from the filing.

3. Reconstruction that survives review

   Each missing year is reconstructed from the transcripts and your records — by your preparer or under the firm's direction — reviewed by the firm before it goes in, and filed in the order that protects you, because a return built from records rather than memory is the one the IRS accepts when it replaces a substitute-for-return assessment.

1. The consultation

   Usually within the first week · about an hour · in person or by phone

   Attorney Hani Khatib explains the six-year practice, the refund windows and your exposure.

2. Form 2848 and the transcripts

   Weeks one to three · after the IRS processes the form

   The firm pulls every available wage-and-income and account transcript and determines which years must be filed and in what order.

3. Reconstruction and filing

   Usually one to three months · longer when business records must be rebuilt

   Each missing year is reconstructed from the transcripts and your records — by your preparer or under the firm's direction — reviewed by the firm before it goes in, and filed in the order that protects you. Any remaining balance goes into the payment arrangement that fits.