The IRS collection process for unpaid taxes runs on a predictable track: a first bill, a series of escalating reminders, and then enforcement through liens, levies, and sometimes referral to a private collection agency. The whole process is bounded by a 10-year collection deadline, and at several points along the way you have short windows — often just 30 days — to respond before losing important rights.1Internal Revenue Service. Time IRS Can Collect Tax Knowing what each notice means and what options you have at each stage is how you keep a manageable tax problem from becoming a serious one.
The Notices You Will Receive
Collection starts the moment the IRS assesses a balance. Federal law requires the agency to send a written notice and demand for payment within 60 days of that assessment.2Office of the Law Revision Counsel. 26 USC 6303 – Notice and Demand for Tax That first letter is the CP14. It tells you what you owe, including any penalties and interest already added, and gives you a date to pay by.3Internal Revenue Service. Understanding Your CP14 Notice Pay in full by that date and no further interest is charged.
If you don’t respond, the IRS sends the CP501, a reminder that your account is past due.4Internal Revenue Service. Understanding Your CP501 Notice Silence brings the CP503, and then the CP504. The CP504 is where things sharpen. It functions as a formal Notice of Intent to Levy and warns that the IRS can seize your state tax refund within 30 days if you don’t pay or make arrangements. It also warns that a federal tax lien may be filed publicly.5Internal Revenue Service. Notice CP504
The CP504 is not the last step before a broader levy on wages or bank accounts. Before seizing those, the IRS must send a separate Letter L-1058 or LT-11 notifying you of your right to a Collection Due Process (CDP) hearing.6Internal Revenue Service. Collection Due Process (CDP) FAQs You have 30 days from that letter to request the hearing, where you can challenge the proposed levy or propose alternatives.7Office of the Law Revision Counsel. 26 USC 6330 – Notice and Opportunity for Hearing Before Levy Miss that window and you lose your right to independent review. Treat any letter mentioning a levy hearing as urgent.
How the Balance Grows
An unpaid IRS balance grows from two directions. The failure-to-pay penalty runs 0.5% of the unpaid tax per month, up to a 25% cap. If you set up an approved installment agreement before a levy notice arrives, that rate drops to 0.25% per month. If you ignore a notice of intent to levy for more than 10 days, the rate jumps to 1% per month.8Internal Revenue Service. Failure to Pay Penalty
A separate failure-to-file penalty applies if you didn’t submit your return on time. That one runs 5% of the unpaid tax per month, also capping at 25%.9Internal Revenue Service. Failure to File Penalty When both apply in the same month, the failure-to-file penalty is reduced by the failure-to-pay amount, but the combined effect still stacks up quickly. Filing on time and owing money is always cheaper than filing late.
Interest is separate, compounds daily, and is reset quarterly at the federal short-term rate plus three points. For the first quarter of 2026, the underpayment rate is 7%.10Internal Revenue Service. Interest Rates Remain the Same for the First Quarter of 2026 Unlike penalties, interest generally cannot be waived except in narrow situations involving IRS errors.
Liens and Levies
A lien is a legal claim on your property. A levy is the actual seizure of it. They sound alike but do very different things.
Federal Tax Liens
A federal tax lien automatically arises the moment you have an assessed balance, receive a demand for payment, and don’t pay.11Office of the Law Revision Counsel. 26 USC 6321 – Lien for Taxes The lien attaches to everything you own or later acquire. It doesn’t become public or affect your standing with other creditors until the IRS files a Notice of Federal Tax Lien in local records.12Office of the Law Revision Counsel. 26 USC 6323 – Validity and Priority Against Certain Persons Once filed, that public notice can make it hard to sell property, refinance, or get new credit.
The lien stays until you pay in full, the collection statute expires, or the IRS accepts an alternative resolution. If you owe $50,000 or less and enter a direct debit installment agreement, the IRS will generally withdraw the lien after three consecutive payments.
Levies
A levy takes your property or income directly. The IRS can levy bank accounts, garnish wages, seize vehicles, and intercept certain federal payments. Before doing so, the agency must provide written notice at least 30 days in advance and give you the chance to request a CDP hearing.13Office of the Law Revision Counsel. 26 USC 6331 – Levy and Distraint Social Security benefits are not fully protected: the IRS can levy up to 15% of each payment for overdue federal taxes.14Social Security Administration. Can My Social Security Benefits Be Garnished or Levied
A CDP hearing is your best opportunity to slow enforcement. You can dispute the amount owed, propose an installment agreement or offer in compromise, or argue that a levy would cause economic hardship. Requesting the hearing within the 30-day window suspends levy activity until the appeal process concludes.7Office of the Law Revision Counsel. 26 USC 6330 – Notice and Opportunity for Hearing Before Levy
The 10-Year Collection Clock
The IRS has 10 years from the date of assessment to collect a tax debt. This deadline is the Collection Statute Expiration Date, or CSED.1Internal Revenue Service. Time IRS Can Collect Tax Once it passes, the IRS can no longer pursue the balance, and any lien must be released. Each tax year has its own CSED.
The clock pauses in several common situations:
- While an installment agreement request is pending, for 30 days after a rejection, and during any appeal.15Internal Revenue Service. Collection Statute Expiration
- While an offer in compromise is being considered, for 30 days after a rejection, and during any appeal.
- During bankruptcy’s automatic stay, plus six months after it lifts.
- While a CDP hearing request is pending, including any court appeals.
- During any continuous absence from the United States of six months or more.
This is where taxpayers occasionally hurt themselves by accident. Applying for a payment plan or offer in compromise extends the IRS’s collection window by the time the request is pending. That’s not a reason to skip these programs, but if your CSED is only a year or two away, weigh the tradeoff before filing.
Relief Options if You Can’t Pay in Full
The IRS offers several programs for taxpayers who can’t pay the balance right away. The right one depends on how much you owe, what you can afford, and how much time is left on the collection statute.
Installment Agreements
A payment plan spreads the balance over monthly installments and holds off more aggressive collection. Setup fees are lowest ($22) for direct debit agreements applied for online, and highest ($178) for non-direct-debit plans set up by phone or mail. Low-income taxpayers — those at or below 250% of the federal poverty level — pay no setup fee for direct debit and a reduced $43 fee otherwise, which may be reimbursed when the plan is completed.16Internal Revenue Service. Payment Plans; Installment Agreements Interest and penalties continue to accrue while you’re on a plan, but the failure-to-pay penalty drops to 0.25% per month once the agreement is in place.8Internal Revenue Service. Failure to Pay Penalty
Offer in Compromise
An offer in compromise lets you settle the debt for less than the full amount. The IRS looks at your income, expenses, asset equity, and ability to pay. You must have filed all required tax returns, made required estimated payments, and not be in an open bankruptcy proceeding.17Internal Revenue Service. Offer in Compromise
The application fee is $205, and an initial payment must accompany the submission. Low-income applicants are exempt from both the fee and the upfront payment.18Internal Revenue Service. Form 656 Booklet Offer in Compromise The IRS rejects most offers, usually because applicants underestimate what the agency considers their reasonable collection potential. A free pre-qualifier tool on IRS.gov can give you a rough sense of whether your offer is in the right range before you spend the fee.
Currently Not Collectible Status
If paying anything would keep you from covering basic living expenses, the IRS can place your account in Currently Not Collectible (CNC) status. You’ll document your income, expenses, bank accounts, and other assets, typically on Form 433-F or Form 433-A.19Internal Revenue Service. Temporarily Delay the Collection Process While in CNC, the IRS stops levies and most active collection, though interest and penalties keep running and the agency periodically checks whether your finances have improved.
CNC status does not pause the 10-year collection clock. If the CSED expires while you’re in CNC, the debt goes away. That makes this option especially valuable for older debts.
First-Time Penalty Abatement
If your compliance record for the prior three tax years is clean — filed on time, paid on time, no penalties — the IRS may waive failure-to-file, failure-to-pay, or failure-to-deposit penalties for the current year.20Internal Revenue Service. Administrative Penalty Relief You can request it by phone or in writing, regardless of the penalty amount. It doesn’t waive interest, only the penalty.
Large Balances and Your Passport
A tax debt above a certain threshold can affect international travel. The IRS certifies “seriously delinquent” tax debts to the State Department, which can deny a new passport application, refuse renewal, or in some cases revoke a current passport. For 2026, the threshold is $66,000 in legally enforceable unpaid federal tax debt, including penalties and interest, adjusted annually for inflation.21Internal Revenue Service. Revocation or Denial of Passport in Cases of Certain Unpaid Taxes
Not every large balance triggers certification. The IRS must first have filed a Notice of Federal Tax Lien with all administrative remedies exhausted, or have issued a levy. If you’re on an approved installment agreement, have a pending offer in compromise, or your account is in CNC status, the IRS will not certify your debt. Getting into one of these programs before certification is the simplest way to protect your passport.
When a Private Collection Agency Contacts You
Federal law requires the IRS to assign certain older, inactive accounts to private collection agencies.22Office of the Law Revision Counsel. 26 USC 6306 – Qualified Tax Collection Contracts An account qualifies as inactive when the IRS has removed it from active inventory for lack of resources, when more than two years have passed since assessment with no employee assigned, or when an employee was assigned but had no interaction with the taxpayer or a third party for more than 365 days.
The three agencies currently authorized to work these accounts are CBE Group, Coast Professional, and ConServe.23Internal Revenue Service. Private Debt Collection They can contact you and help set up payment arrangements. They cannot issue levies, file liens, or take any enforcement action.
Who Is Excluded
The IRS will not send your account to a private agency if you fall into a protected category:
- Adjusted gross income at or below 200% of the federal poverty level
- Recipients of Supplemental Security Income (SSI) or Social Security Disability Insurance (SSDI)
- Taxpayers under age 18
- Victims of tax-related identity theft
- Active military in a designated combat zone
- Accounts with an active installment agreement, pending offer in compromise, open examination or criminal investigation, or open appeal24Internal Revenue Service. Private Debt Collection FAQs
If you believe your account was assigned despite falling into one of these categories, contact the IRS. The agency will recall the account.
Private collectors working IRS accounts are also subject to the Fair Debt Collection Practices Act, which normally does not cover tax debts. That means the same rules on contact hours, harassment, and misrepresentation apply, and violations can be pursued under the FDCPA.
How to Verify a Legitimate Collector
Scam calls impersonating the IRS are common, so the agency built a two-layer verification system into the private collection program. Before any private collector contacts you, the IRS mails a CP40 notice identifying which agency has been assigned. The assigned agency then sends its own letter confirming the assignment. Both letters include a Taxpayer Authentication Number, which the collector must use during phone conversations to prove identity.25Internal Revenue Service. Understanding Your CP40 Notice
If someone calls claiming to collect an IRS debt and you haven’t received both letters, that’s a red flag. Confirm the agency’s name against the official list on the IRS private debt collection page before sharing any personal or financial information. Legitimate collectors never demand payment by gift card, prepaid debit card, or wire transfer.
Paying and Opting Out
Private agencies never accept payments directly. Every dollar goes to the IRS through official channels: IRS Direct Pay (a free bank transfer on IRS.gov), the Electronic Federal Tax Payment System, a debit or credit card through an approved processor, or a check or money order made payable to the United States Treasury.24Internal Revenue Service. Private Debt Collection FAQs If a caller asks you to send money to anyone other than the IRS, hang up.
You are not required to work with the private agency. Send a written request asking that your account be returned to the IRS, and the agency will stop collection activity and transfer the file back. Opting out doesn’t erase the debt; the IRS resumes handling it internally.