IRS notice decoder
IRS Notice LT16: your account is overdue, please call
An LT16 is a collection notice telling you your account is overdue: the IRS is trying to collect an unpaid balance and, in some cases, its records show a return you have not filed. It asks you to call and resolve it, and warns that enforcement action, a lien or a levy, may follow if you do not respond. There is no fixed statutory deadline; act by the date printed on the notice.
General information, not tax or legal advice. Deadlines and dollar figures below reflect what the IRS publishes and can change; the controlling dates are the ones printed on your own notice. ClearChoiceRadar is not affiliated with the IRS or any government agency.
An enforcement warning on the balance
Why you got it
An LT16 goes out when the IRS records show an unpaid tax balance, one or more unfiled returns, or both, and the account has reached a stage where the agency wants you to call and resolve it. It is an escalation notice: the tone is that time is running out to handle this voluntarily.
Because it can cover missing returns as well as a balance, the first step is to figure out which applies to you. A balance and an unfiled return are handled differently, and an unfiled return has to be filed before most resolution options can be set up.
A sensible response
Pull your account transcript or balance from your IRS online account rather than relying only on the printed figure.
File any missing returns as soon as possible, since most payment options require your filings to be current.
Decide honestly which category you are in: can pay, can pay monthly, or cannot pay without hardship.
Call the number on the notice, or apply for a payment plan online, before the account moves to enforcement.
What enforcement means
A lien and a levy are not the same thing
The LT16 warns the IRS may take enforcement action. A levy actually seizes property, such as wages or the money in a bank account. A federal tax lien is a public legal claim against what you own; it does not take anything, but it can affect your credit and attaches to property you own now and later. Responding, paying, or arranging a plan is what stops the account from getting to either one.
Three ways forward
You can pay it
Pay the balance in full and the account resolves. File any missing returns at the same time.
You can pay monthly
An installment agreement stops the enforcement track and lowers the monthly penalty rate while the plan is in effect.
How IRS payment plans work →You genuinely cannot pay
Currently not collectible status and the Offer in Compromise exist for real hardship, and both require financial disclosure.
How the Offer in Compromise works →LT16 questions
Is an LT16 serious?
It is an escalation notice. It means the IRS considers your account overdue and is warning that enforcement, a lien or a levy, may follow if you do not respond. Nothing has been seized at this stage, but the notice signals that the window to resolve it voluntarily is closing.
Is there a deadline on an LT16?
The IRS.gov LT16 page does not state a fixed statutory deadline. The operative date is the one printed on your own notice. Acting by that date is how you avoid additional penalties, interest, and possible enforcement.
What if my LT16 mentions an unfiled return?
File the missing return as soon as possible. Most resolution options, including payment plans, require your returns to be filed first, so an unfiled return has to be handled before the balance can be arranged.
What happens if I ignore an LT16?
The IRS may continue its collection process and can move to file a Notice of Federal Tax Lien or issue a levy against your wages, bank accounts, or other property, while penalties and interest keep accruing. Responding promptly is what prevents that.
Sources: IRS: Understanding your LT16 notice, IRS Taxpayer Advocate Service: Notice LT16. The deadline that governs your case is the one printed on your notice.
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