By Sam Brotman, J.D., LL.M. (Taxation), MBA — Updated May 2026

Can the IRS Collect After 10 Years? Understanding the CSED

The CSED is one of the most consequential deadlines in federal tax collections. It is also one of the least understood — and the IRS has no incentive to educate you about it.

This page covers how the collection statute works, when the clock actually starts, what extends or suspends it, and what happens when it finally expires. If you want a deeper look at how collections work from the IRS side, our complete guide to IRS collections covers the full process.

What the 10-Year Collection Statute Actually Is

The IRS has 10 years from the date of assessment to collect a tax debt. This is the Collection Statute Expiration Date, or CSED.

The authority comes directly from the Internal Revenue Code. IRC § 6502 states that the IRS has ten years after assessment to bring a proceeding in court or levy on property to collect a tax. After that period, the collection right expires by operation of law.

This is a hard legal deadline — not a guideline, not a policy. Congress enacted it to create finality for taxpayers. At some point, even the IRS’s collection authority ends.

That said, “10 years from assessment” does not mean what most people think it means. The assessment date is not the date you filed your return. It is not the date you first received an IRS notice. Understanding exactly when the clock starts — and what pauses it — is the whole game with CSED planning.

When the 10-Year Clock Starts: Assessment vs. Filing Date

The CSED clock starts on the date the IRS officially assesses the tax — not the date you filed the return.

For most individual taxpayers who file a return and report their own tax liability, the assessment happens automatically. The IRS records the assessment roughly 60 days after the return is processed. So if you file a return on April 15, 2020 and the IRS processes it in May 2020, your assessment date — and your CSED start date — is somewhere around July 2020, not April 15, 2020.

That distinction adds up. A 60-day difference in the start date is a 60-day difference in when the statute expires.

The gap is larger in other common scenarios:

• Audit adjustments. If the IRS examines your return and assesses additional tax — whether through a field audit, a correspondence audit, or a statutory notice of deficiency — the assessment date for the additional tax is the date the IRS formally records the new liability. That could be years after the original filing date. The IRS has three years after filing to assess additional tax in most cases (that is a separate statute, IRC § 6501), but if they assess in year three, the CSED for that additional tax starts in year three — not the original filing date.
• CP2000 notices. A CP2000 is a notice proposing additional tax based on information returns the IRS received — W-2s, 1099s — that do not match what you reported. If you do not timely dispute the proposed change and the IRS assesses the additional tax, the assessment date on the CP2000 is the CSED start date for that balance.
• Substitute for Return (SFR). If you do not file a return, the IRS may file one for you under IRC § 6020(b). The assessment from that SFR has its own date. Taxpayers who later file their own return to replace an SFR sometimes discover the CSED is running from the earlier SFR assessment, not the later self-filed return. This requires careful analysis.
• Amended returns. Filing an amended return that increases your tax liability can trigger a new assessment date for the additional amount. The CSED for the additional tax runs from that new assessment, not from the original filing.

The practical takeaway: you can have multiple CSEDs for the same tax year, each running from a different assessment date. A year with an original return, a subsequent audit adjustment, and a CP2000 notice could have three different CSED dates, each for a different portion of the total balance.

This is why the IRS Account Transcript — specifically the 23C date — is the starting point for any CSED analysis, not the tax return itself.

What Extends or Suspends the CSED

Several events legally pause or extend the CSED, sometimes by years. Many taxpayers discover their collection statute is much longer than they expected.

The IRS refers to these as tolling events. Each one suspends the running of the 10-year period for a defined duration, and the remaining time picks up where it left off when the tolling period ends.

Offer in Compromise

When you submit an Offer in Compromise, the CSED is suspended for the entire time the offer is pending at the IRS, plus an additional 30 days after the IRS either rejects or accepts the offer. The IRS processing an OIC can take anywhere from six months to well over a year. If your OIC is rejected and you appeal, the tolling continues through the appeals period.

This is not a penalty — it is a trade-off. The IRS agrees to consider your settlement offer; you agree not to let the statute run out while they do. But it means a taxpayer who submits an OIC close to their CSED may have significantly less time remaining after the offer is resolved than they thought they would.

Bankruptcy

Filing for bankruptcy triggers an automatic stay that prevents the IRS from collecting. The CSED is suspended for the duration of the bankruptcy proceeding plus six months after it concludes. If a Chapter 7 bankruptcy takes six months to discharge, you add roughly twelve months to the CSED. Chapter 13 plans often last three to five years — adding that time plus six months is a meaningful extension.

Installment Agreements

The interaction between installment agreements and the CSED is often misunderstood. An installment agreement does not automatically toll the CSED. You are paying the balance over time, and the CSED continues to run while you make payments. However, if you default on an installment agreement and request a new one, the reinstatement period can toll the statute. And some installment agreement forms — particularly older ones — included language where the taxpayer waived the CSED or agreed to extend it as a condition of the agreement.

Read any installment agreement carefully before signing. If you see language about extending or waiving the collection statute, flag it. Waiving the CSED means giving the IRS more time to collect, and that is rarely in your interest.

Collection Due Process (CDP) Hearing

When the IRS issues a Notice of Federal Tax Lien or a notice of intent to levy, you have the right to request a Collection Due Process hearing under IRC § 6330. Filing that request suspends the IRS’s ability to levy while the CDP case is pending, and the CSED is tolled during that period. If the case goes to the Tax Court, the tolling continues through the court proceeding.

Innocent Spouse Claims

Filing an innocent spouse claim under IRC § 6015 can suspend the CSED for the requesting spouse. The suspension lasts while the claim is pending and for an additional 60 days after it is resolved.

Taxpayer Assistance Orders

A Taxpayer Assistance Order issued by the Taxpayer Advocate Service can suspend collection activity, and the CSED is tolled during the period the order is in effect.

Time Outside the United States

If a taxpayer is outside the United States for a continuous period of six months or more, the CSED is suspended for the entire period of absence. This tolling provision often comes as a surprise. If you spent a year abroad — whether for work, family, or other reasons — that year does not count against the IRS’s collection period.

Pending Litigation

When a case is pending before the Tax Court or a district court in connection with a deficiency notice or a refund claim, the CSED is typically suspended. The specific tolling rules depend on the nature of the proceeding.

The cumulative effect of multiple tolling events can add years to the collection period. I have seen cases where a taxpayer assumed the statute had expired — based on the raw 10-year count from the assessment date — only to discover that multiple tolling events had extended it well beyond what they calculated. Getting the CSED right requires accounting for every event on the transcript, not just the assessment date.

How to Find Your CSED on Your Tax Transcript

The most reliable way to determine your CSED is to pull your IRS Account Transcript and locate the 23C date — the date the IRS formally recorded the assessment.

You can request Account Transcripts through IRS.gov (the “Get Transcript” portal) or by calling the IRS at 800-829-1040. You need a transcript for each tax year that has an outstanding balance, because each year’s CSED runs separately.

On the Account Transcript, look for a line coded “23C” or an entry labeled “Assessment” with a date. That date is the starting point for your 10-year calculation.

From there, the base CSED calculation is straightforward: add 10 years to the 23C date. If the assessment date is July 15, 2018, the base CSED is July 15, 2028.

The harder part is adjusting for tolling events. The transcript will show entries for installment agreements, OIC submissions, bankruptcy filings, CDP requests, and other events. Each entry needs to be mapped against the corresponding tolling rule to calculate how much time it added to the CSED. This is where the analysis gets detailed, and where a mistake in either direction — over- or underestimating the CSED — has real consequences.

If the IRS has assessed tax for multiple years, do this analysis for each year separately. The CSED dates will differ, the tolling events may differ, and the strategy for each year may differ.

One other note: if you need the IRS’s own calculation of your CSED, you can ask the IRS Centralized Authorization File unit or the Revenue Officer assigned to your case. The IRS is not always forthcoming with this information, and their calculation may differ from yours — which is itself worth investigating.

What Happens When the CSED Expires

When the CSED expires, the IRS loses its legal authority to collect the tax through levy, wage garnishment, or other enforcement mechanisms.

This means:

• The IRS cannot levy your bank accounts, wages, or property to satisfy the debt.
• Any existing levies should cease — the IRS is required to release them once the statute has run.
• The underlying liability technically still exists on the IRS’s records, but it is legally uncollectable.
• Federal tax liens that were filed before the CSED expired become unenforceable after expiration and must be released. You may need to formally request the lien release — it does not happen automatically.
• The IRS cannot apply future tax refunds to an expired balance (technically — though it is worth monitoring).

There are a few things the CSED does not do on its own:

The IRS does not automatically zero out the balance on your account when the CSED passes. You may still see the old liability reflected in IRS records. If the IRS has a recorded tax lien against your real property or other assets, that lien does not disappear on its own — you need to request a formal lien release and may need to pursue that through the IRS Lien Unit or through the courts if the IRS does not act promptly.

And practically speaking: if you are waiting out a CSED, do not assume silence means the clock is running cleanly. Verify the Account Transcript periodically. The IRS does make errors in CSED calculations, and an erroneous levy after a CSED expiration is not unheard of.

Mistakes Taxpayers Make With the CSED

The most costly CSED mistakes are almost always errors of omission — events that tolled the statute that the taxpayer did not account for.

1. Counting from the filing date instead of the assessment date

This is the most common error. The 10-year clock runs from assessment, not filing. Depending on the nature of the liability, these dates can be years apart. An audit assessment in year two or three of an audit adds those years to the collection window.

2. Not accounting for tolling events

If you ever submitted an OIC, filed for bankruptcy, or had a CDP hearing, those events toll the statute. It is surprisingly easy to forget a bankruptcy from years ago when you are trying to figure out whether a 2015 tax liability has expired. The IRS’s transcript is the authoritative record — not your memory.

3. Waiving or extending the CSED without realizing it

Some installment agreements — particularly partial-pay installment agreements negotiated when the CSED was a live issue — include language extending the collection period. Taxpayers sometimes sign these without understanding that they are trading away time. Before signing any agreement with the IRS that involves a collection period extension, understand exactly how much time you are giving up and why.

4. Filing an OIC or entering an installment agreement near the CSED without understanding the impact

If your CSED is approaching — say, within a year — and you decide to submit an Offer in Compromise, you need to model the tolling impact before filing. The OIC tolls the statute while it is pending plus 30 days. A rejected OIC on appeal could toll the statute for 12 to 18 months. If the underlying strategy was to wait out the statute, filing an OIC may undermine that strategy entirely.

5. Assuming the CSED is irrelevant because the balance is small

The CSED matters regardless of the balance. A $3,000 liability from 2013 that has nearly run its statute is worth tracking. The IRS has the same enforcement tools for small balances as for large ones — and a levy or garnishment on a small balance can still cause real disruption.

6. Not requesting lien releases after expiration

A federal tax lien recorded against your real property does not release itself when the CSED expires. If you are trying to sell a property or refinance and there is a recorded lien from a liability that has expired, you need to take affirmative steps to get it released. This takes time — plan for it.

Frequently Asked Questions

Can the IRS collect after 10 years?

Generally, no. Under IRC § 6502, the IRS has 10 years from the date of assessment to collect a tax liability. Once that period expires — the Collection Statute Expiration Date, or CSED — the IRS loses its legal authority to levy, garnish wages, or file new liens to enforce collection. However, the 10-year clock can be extended or suspended by several events, so the CSED may be longer than you expect.

Does the 10-year collection period start from when I filed my return?

No. The 10-year period starts from the date the IRS assesses the tax — not the original filing date. For a self-assessed return, the assessment date is typically 60 days after you file. For an audit adjustment or a CP2000 notice, the assessment date is the date on the notice after you fail to timely dispute it or the Tax Court enters judgment. These dates are not the same, and mixing them up is one of the most common CSED mistakes.

What events extend or suspend the CSED?

The most significant events that extend or suspend the CSED are: submitting an Offer in Compromise (the clock pauses while the OIC is pending plus 30 days); filing for bankruptcy (clock pauses for the duration plus 6 months); entering into an installment agreement in some circumstances; filing an innocent spouse claim; requesting a Collection Due Process (CDP) hearing; and being outside the United States for six or more consecutive months. Each of these can add months or years to the collection window.

How do I find my CSED?

The most reliable way is to pull your IRS Account Transcript for each tax year at issue. The transcript shows the 23C date — the assessment date — from which you can calculate the base CSED. If there have been OIC submissions, bankruptcy filings, or installment agreements, you need to add the corresponding tolling periods to get the actual expiration date. You can request transcripts through IRS.gov or by calling the IRS directly.

Does the IRS automatically write off a tax debt when the CSED expires?

No. The IRS does not automatically remove the debt from your record when the CSED expires. The legal authority to collect is gone, but you may still see the balance on your account. If the IRS has a tax lien recorded against your property, that lien does not automatically release — you generally need to request it. Taking affirmative steps after the CSED expires protects you and clears the record.