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Official form guide
Internal Revenue Service Form 656L is an Offer in Compromise Doubt as to Liability (DATL) form. It is used by taxpayers who dispute the existence or amount of a tax debt. No specific thresholds, deadlines, or rates are available from the official source.
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Internal Revenue Service Form 656L is an Offer in Compromise Doubt as to Liability (DATL) form. It is used by taxpayers who dispute the existence or amount of a tax debt. No specific thresholds, deadlines, or rates are available from the official source.
Plain English
Form 656L lets you ask the IRS to forgive part or all of a tax bill you don't think you owe. You must show evidence that the tax is wrong, not just that you can't pay. The IRS agrees only if they find the tax truly incorrect.
Submission Date
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Form selector
You agree with the tax debt but cannot pay in full
Installment agreement may avoid an offer in compromise
✓ Confirm you qualify for an installment plan on IRS.gov
You dispute a notice of deficiency in Tax Court
Tax Court petition has separate rules
✓ Check Tax Court filing procedures
Form 656L is not for that purpose
You want to compromise based on effective tax administration
Doubt as to Liability is a different legal basis
✓ Ensure you meet ETA criteria before submitting
Not stated in the official source. No filing window or extension rules are provided for this form.
Checklist
Tax liability amount disputed
Copy of the notice of deficiency or bill · IRS correspondence
Legal basis for doubt
Applicable tax law citations or court cases · Tax professional research
Proof of payment claimed
Canceled checks, bank statements, payment vouchers · Personal records
Identity verification
Valid government-issued photo ID (e.g., driver's license, passport) · Personal documents
Correspondence address
Current mailing address and phone number · Personal records
Date of dispute
Tax period and year in question · IRS notice or tax return
Estimated tax return if not filed
Completed tax return for the year under dispute · Personal tax records
Field map
General Info
2 items
Full legal name and taxpayer identification number (SSN or EIN).
Current mailing address.
Details
2 items
Complete all applicable sections of this form according to the official IRS instructions.
Enter the relevant dollar amount if this form involves tax calculation.
Certification
1 items
Read and acknowledge any certifications required by this form.
Signatures
1 items
Sign and date. Unsigned forms cannot be processed.
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Fillable formOpen in Editor->The official source does not provide a revision date or edition details for IRS Form 656L. No latest-information page is referenced. Any changes from prior versions are unknown from the source.
Quick Facts
Downloads
Can I use this form if I owe money but think the amount is wrong?
Yes, that is the exact purpose of Doubt as to Liability.
→ Confirm you are disputing the existence or amount, not your ability to pay.
Is this form the same as a regular offer in compromise?
No, it is specifically for Doubt as to Liability, not Doubt as to Collectibility.
→ Check the form title: Offer in Compromise Doubt as to Liability (DATL).
Do I need to pay a fee to file this form?
The IRS fee schedule for offers may apply; check current instructions.
→ Look at the current Form 656L instructions for fee details.
Can I file this form if I already have a Tax Court case?
Generally no; legal disputes in Tax Court should use that process.
→ Confirm you are not in ongoing Tax Court litigation.
What if I lose my copy of the form after mailing?
You can download a new blank form from IRS.gov and refile if needed.
→ Keep a certified mail receipt and a photocopy.
Does filing this form stop collection actions?
Filing an offer may temporarily suspend collection, but not always.
→ Confirm the current IRS policy on collection while offer is pending.
Workflow map
Before
Current
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Often used with
⚠ If something goes wrong
Form 656L lets you ask the IRS to forgive part or all of a tax bill you don't think you owe. You must show evidence that the tax is wrong, not just that you can't pay. The IRS agrees only if they find the tax truly incorrect.
Any taxpayer who believes the IRS assessment of a tax liability is incorrect may use Form 656L.
The form collects your personal information, the tax debt details, and your explanation and evidence showing the liability is wrong. It does not require financial statements like other offer forms.
Complete the form with your name, address, and taxpayer ID. Describe the tax periods and amounts you dispute, and attach evidence supporting your position. Sign and date the form. Mail it to the address on the form instructions.
If you submit an incorrect or incomplete Form 656L, the IRS may reject it and you may lose the right to dispute the liability through this program.
Yes, that is the exact purpose of Doubt as to Liability. Confirm you are disputing the existence or amount, not your ability to pay.
No, it is specifically for Doubt as to Liability, not Doubt as to Collectibility. Check the form title: Offer in Compromise Doubt as to Liability (DATL).
The IRS fee schedule for offers may apply; check current instructions. Look at the current Form 656L instructions for fee details.
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