Most taxpayers who have heard of an offer in compromise think of it as a way to settle a tax bill for less than the full amount because paying in full would cause a hardship. That is one path, and it requires a full financial disclosure. A separate and less understood path exists for a taxpayer who does not believe the liability is correct at all. It is called doubt as to liability, and it works differently at almost every step.
Tax compliance is not a once-a-year event. An assessment made during an audit, a substitute return the IRS filed on a taxpayer’s behalf, or a notice sent to an old address does not stop generating consequences once the tax season that produced it has passed. IRS collection activity, interest accrual, and the taxpayer’s own window to contest an incorrect assessment all continue running in parallel, often for years. Tax problems are easier to manage before the IRS process controls the timeline. If you want a practical review of your exposure, planning options, or IRS correspondence, speak with Steve Perry, EA. Call 678-717-9818, email steve@bookstaxesatl.com, or connect on LinkedIn at www.linkedin.com/in/steveperrybtm.
What Doubt as to Liability Addresses
A doubt as to liability offer, submitted on Form 656-L, exists for a genuine dispute about whether the correct tax debt exists under the law, or about its correct amount. The IRS identifies several circumstances where this can arise: an examiner misapplied the law, an examiner did not consider evidence the taxpayer presented, new evidence has since surfaced, or the taxpayer never received notice of an audit because of a change of address, a missed appointment caused by a disaster, or a similar breakdown in the process. A taxpayer who later discovers that reported stock values were inflated through broker or employer fraud, resulting in an inflated liability, fits this same category.
This is a fundamentally different question from whether a taxpayer can afford to pay. A taxpayer who agrees the tax is owed but cannot pay it in full is in doubt as to collectibility territory, filed on Form 656, not Form 656-L.
How the Process Differs From a Standard Offer
The standard offer in compromise, based on doubt as to collectibility, requires a full financial statement on Form 433-A or Form 433-B, a $205 application fee, and an initial payment tied to the offer amount. A doubt as to liability offer requires none of this. No financial disclosure, no application fee, and no initial payment accompany Form 656-L. What the process does require is a written statement explaining why all or part of the tax debt is incorrect, along with supporting documentation. Before assuming your tax position is settled for the year, consider having Steve Perry, EA evaluate your records, IRS risk, and planning opportunities. Call 678-717-9818, email steve@bookstaxesatl.com, or connect on LinkedIn at www.linkedin.com/in/steveperrybtm.
This difference in structure reflects a different underlying question. A doubt as to collectibility offer asks the IRS to accept less than the full liability because full payment is not realistic. A doubt as to liability offer asks the IRS to reconsider whether the assessed amount is correct in the first place. The IRS reviews the evidence rather than a household budget.
When a Doubt as to Liability Offer Cannot Be Used
The IRS will not consider a doubt as to liability offer once the liability has been established by a final court decision or judgment, or where the assessed tax is simply based on current law that the taxpayer disagrees with as a policy matter rather than a factual or legal error. It also will not be considered while the same issue is already being addressed elsewhere, such as an open audit reconsideration request or an unresolved notice covering the same liability. Filing a doubt as to liability offer while another process on the same issue is still open generally results in the offer being returned without consideration.
Audit Reconsideration Often Comes First
When the liability in question came from an audit, the IRS generally expects audit reconsideration to be pursued before a doubt as to liability offer. Audit reconsideration has no filing fee, involves no separate form, and is handled by submitting a written request and new documentation to the office that conducted the original examination. It is available when the taxpayer submits information the IRS has not previously reviewed, filed a return after the IRS prepared one on the taxpayer’s behalf, or identifies a computational or processing error, provided the assessed liability remains unpaid.
The two processes are not interchangeable, and the difference in how each affects collection activity matters. Audit reconsideration does not automatically pause collection. The IRS may continue notices, liens, and levies while reconsideration is pending unless the taxpayer separately requests a hold. A doubt as to liability offer becomes pending, with its own collection protections, only once an authorized IRS official signs the form. Before that point, a levy already in motion can proceed. If IRS notices, unpaid balances, missing records, or planning gaps are starting to create concern, speak with Steve Perry, EA before the problem becomes harder to control. Call 678-717-9818, email steve@bookstaxesatl.com, or connect on LinkedIn at www.linkedin.com/in/steveperrybtm.
The Prior Opportunity Rule and Collection Due Process
A taxpayer who receives a final notice of intent to levy can request a Collection Due Process hearing and raise doubt as to liability as part of that hearing. This option is not unlimited. Under section 6330(c)(2)(B) of the Internal Revenue Code, a taxpayer does not have the right to raise doubt as to liability in a Collection Due Process hearing if the taxpayer already had a prior opportunity to dispute the liability, such as receiving a notice of deficiency or having access to an Appeals conference before or after the assessment. Courts have upheld this limitation, including in Kindred v. Commissioner. A taxpayer who is also barred from raising the liability in the Collection Due Process hearing itself is generally barred from raising it again in a later judicial review of that hearing.
This rule rewards early action and penalizes delay. A taxpayer who ignored a notice of deficiency, missed an Appeals conference, or otherwise let an earlier dispute window close does not get a second opportunity to relitigate the liability simply because a levy notice arrived later.
Why Timing Affects the Outcome
None of these avenues stop the clock on interest, which continues to accrue on the assessed balance regardless of which process is pending. Records supporting a dispute, such as documentation showing a stock valuation was fraudulent or evidence an examiner failed to consider, become harder to reconstruct the longer a taxpayer waits. The IRS’s own ten-year collection statute continues running in the background as well, which means a very old assessment may eventually expire on its own, but relying on that outcome instead of resolving the underlying dispute leaves years of exposure, credit consequences, and potential lien filings in place in the meantime.
Common Assumptions That Create Problems
Several assumptions about this area of tax resolution tend to cost taxpayers time and options:
- Believing every offer in compromise requires the same financial disclosure, when a doubt as to liability offer does not
- Believing that once a liability is assessed, nothing more can be done to challenge it
- Believing that filing Form 656-L immediately stops all collection activity, when protection begins only once the IRS accepts the offer as pending
- Believing a missed opportunity to dispute a liability earlier can simply be raised again at a later Collection Due Process hearing
- Believing a rejected doubt as to liability offer ends the process, when a protest to the Independent Office of Appeals is available within 30 days
Other circumstances may apply depending on the specific facts of the assessment and the taxpayer’s prior dealings with the IRS on the same issue.
Managing an Incorrect Liability as an Ongoing Process
A tax debt that was assessed in error does not correct itself with time. It accrues interest, moves through the same collection sequence as a debt that is genuinely owed, and becomes harder to dispute successfully the longer supporting records go unassembled and prior dispute windows go unused. Good tax outcomes come from managing the year before the IRS forces the issue. For help reviewing your next steps, speak with Steve Perry, EA. Call 678-717-9818, email steve@bookstaxesatl.com, or connect on LinkedIn at www.linkedin.com/in/steveperrybtm.
Frequently Asked Questions
What is the difference between doubt as to liability and doubt as to collectibility?
Doubt as to liability disputes whether the correct tax debt exists or its correct amount, filed on Form 656-L. Doubt as to collectibility accepts that the tax is owed but argues the taxpayer cannot pay it in full, filed on Form 656 with a full financial disclosure.
Does a doubt as to liability offer require a financial statement or application fee?
No. Form 656-L does not require Form 433-A, Form 433-B, an application fee, or an initial payment. It requires a written explanation of why the liability is incorrect along with supporting documentation.
Can doubt as to liability be raised during a Collection Due Process hearing?
Only if the taxpayer did not already have a prior opportunity to dispute the liability, such as receiving a notice of deficiency or an Appeals conference. If that opportunity already existed and was not used, the taxpayer generally cannot raise the liability again at this stage.
What happens if the liability came from an audit that has not yet gone through reconsideration?
The IRS generally expects audit reconsideration to be completed first when the dispute stems from an audit. A doubt as to liability offer filed while that process is still open may be returned without consideration.
What happens if a doubt as to liability offer is rejected?
The taxpayer may protest the rejection to the Independent Office of Appeals within 30 days of being notified of that right. The offer remains pending while the appeal is considered. There may be additional considerations depending on the facts and circumstances of the assessment.
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