IRS Uncollectible Status Statute of Limitations: How CNC and the 10-Year Clock Work

What Currently Not Collectible status means

Currently Not Collectible, often shortened to CNC, is an internal account status. It tells IRS collection staff to stop actively pursuing a balance because the person cannot pay right now. The IRS’s page on how to temporarily delay the collection process describes it as suspending most collection activity, while making clear that you still owe the full amount.

Staff follow the rules in the Internal Revenue Manual at IRM 5.16.1, which was last revised on March 3, 2025. The manual says a hardship exists when a taxpayer cannot pay reasonable basic living expenses. Most CNC decisions also need approval from the employee’s manager.

Hardship is the most common reason for CNC, but the manual also uses the status for accounts where the IRS cannot locate the taxpayer, cannot contact them, or the taxpayer has died with no estate to collect from. This page focuses on hardship, since that is the route a person can ask for.

The IRS uncollectible status statute of limitations

Federal law gives the IRS a limited time to collect. Under 26 U.S.C. 6502, a properly assessed tax can be collected by levy or court action within 10 years after the assessment. The end of that period is the Collection Statute Expiration Date, or CSED.

A few points that people often miss:

• The clock starts at assessment, not when the tax was due. If you filed late, or the IRS assessed extra tax after an audit, the 10 years begins on that later assessment date.
• Each tax year has its own CSED. An extra assessment for the same year, such as a penalty added later, can carry its own date.
• The clock keeps running in CNC. The Taxpayer Advocate Service lists the events that suspend the CSED; CNC is not among them. So years spent in hardship status count toward the 10.
• When the CSED passes, the IRS can no longer start collection. The TAS explains that once a collection period ends, the IRS may not begin administrative or court actions to collect that balance.

This is why CNC can matter so much for someone near the end of a collection period. If your finances are unlikely to improve, staying in CNC until the CSED passes can mean the remaining balance is never collected. The manual even notes that one closing code is used only after a statute has expired.

Events that pause or extend the deadline

Some actions stop the 10-year clock for a while, which pushes the CSED later. The TAS article Understanding your Collection Statute Expiration Date, updated April 1, 2026, lists these:

Living outside the United States for six months or more in a row can also pause collection under a separate section of the tax code (IRC 6503(c)). If that applies to you, ask a tax professional how it changes your date.

This does not mean you should avoid payment plans or offers. They can be the right choice. It just means the trade-off between options includes their effect on your CSED.

What CNC stops and what it does not

The IRS spells out what changes and what stays the same once an account is placed in CNC.

Refunds. The IRS says if you are due a federal tax refund, it will apply it to your unpaid tax debt. If you get the Earned Income Tax Credit, plan for that refund to be taken while you owe. See our guide to IRS tax refunds for how refund timing works.

Liens. The IRS may file a Notice of Federal Tax Lien to protect its claim on your property. IRM 5.16.1 says a lien should generally be filed when the unpaid assessed balance is $10,000 or more, with exceptions. The IRS page Understanding a federal tax lien explains how liens work and how they are released.

Passports. The IRS can certify a seriously delinquent tax debt to the State Department, which can deny or revoke a passport. For 2026 the threshold is more than $66,000, adjusted yearly. The IRS’s passport page says accounts in CNC due to hardship are not certified.

Who usually qualifies for hardship status

The IRS compares your income with your necessary living costs. It uses national and local allowances for food, clothing, housing, utilities, transportation, and health care, published as the Collection Financial Standards. If nothing is left after allowable expenses, and you have no equity in assets that could be sold or borrowed against, CNC is likely to fit.

Situations where CNC often comes up include:

• Income only from Social Security, SSI, unemployment, or public assistance.
• Long-term unemployment with no other income.
• Serious or terminal illness, or large ongoing medical bills.
• Incarceration.
• Older adults on a fixed income with no savings or home equity.

The manual says a full financial statement is not always required in cases like these, but expect to answer questions about income and expenses either way. Having some savings or a paid-off car does not automatically disqualify you, but the IRS will ask whether those assets could pay part of the debt.

Requesting CNC status, step by step

1. File any missing returns. The IRS generally wants all required returns filed before it agrees to a collection alternative.
2. Gather proof. Pay stubs or benefit letters, bank statements, rent or mortgage, utilities, car costs, insurance, medical bills, and court-ordered payments.
3. Fill out a financial statement. The IRS may ask for Form 433-F (Collection Information Statement) or the longer Form 433-A for wage earners and self-employed people. Businesses use Form 433-B.
4. Call the IRS. Use 800-829-1040 or the phone number on your notice. Say you cannot pay basic living expenses and want your account reviewed for Currently Not Collectible status.
5. Send documents promptly. Keep copies and note the name and ID number of each person you speak with.
6. Watch for a decision. If approved, collection stops, though you will still get yearly balance notices. If denied, ask why and what option they would accept instead.

If a levy is already taking your wages or bank account and you cannot pay rent or buy food, tell the IRS right away and contact the Taxpayer Advocate Service. Never pay a company that promises to “erase” IRS debt for an upfront fee; asking the IRS for CNC is free.

How long CNC lasts and when it ends

There is no fixed end date. The IRS says it may review your finances periodically and may resume collection if your ability to pay improves. IRM 5.16.1 explains that for hardship accounts, income on each new tax return is checked, and the account can be reactivated automatically if income rises above a set level.

CNC can end in a few ways:

• Your income goes up and the IRS asks for payments or a payment plan.
• You get a new balance for a later year that you also cannot pay, and the IRS reviews the whole account.
• You stop filing required returns.
• The CSED passes, and the remaining balance for that year can no longer be collected.

Keep filing every year, on time, even if you cannot pay. New unpaid balances can pull your account back into active collection.

Finding your own collection deadline

You can see your dates yourself:

• Account transcript. Get one through your IRS online account, the Get Transcript tool, or Form 4506-T. TAS says the earliest CSED for each tax period appears on the transcript. Look for the assessment dates.
• Phone. Call 800-829-1040 and ask how the CSED for a specific year was calculated.
• Disputes. If the date still seems wrong, TAS suggests asking for help by filing Form 911.

If the IRS took payments or refunds after a CSED passed, TAS says you can ask for a refund, as long as you ask before the refund statute expiration date.

CNC compared with other IRS options

For a wider view of options for other debts, read our debt relief guide and our overview of free government debt relief programs.

Free help from TAS and tax clinics

The Taxpayer Advocate Service is an independent organization within the IRS. It helps when an IRS problem is causing financial hardship or has not been fixed through normal channels. Its help is free. You can reach TAS at 877-777-4778, find a local office on its site, or file Form 911.

Low Income Taxpayer Clinics (LITCs) represent people in disputes with the IRS, usually for free or a small fee. The IRS says eligibility depends mainly on income, and the amount in dispute is usually under $50,000. Find a clinic in Publication 4134, which also lists the languages each clinic serves, or call 800-829-3676 to order a copy.

Your rights in collection, including the right to challenge the IRS’s position and the right to a fair and just tax system, are listed in the Taxpayer Bill of Rights.

Related guides

• IRS tax refunds
• Debt relief
• Government grants for financial hardship and debt
• Debt forgiveness programs for senior citizens

Frequently asked questions

This guide is general information, not tax or legal advice. Your collection deadline and options depend on your own account history; check your IRS transcript and talk with the Taxpayer Advocate Service, a Low Income Taxpayer Clinic, or a qualified tax professional. National Relief Program is an independent website and is not affiliated with the IRS or any government agency.