Understanding your LT50 notice

What this notice is about

We’re trying to collect unpaid taxes and unfiled returns from you. We previously notified you that we would contact third parties to get or verify your contact information. We’ll continue to contact others through the period shown on your notice.


What you need to do

Pay your balance in full by the date shown on your notice to avoid paying more in penalties and interest.

File your missing tax returns (if applicable). If your notice tells you to file missing returns, see “Filing my missing returns” below for more information on how to file your return.

Questions about your LT50 notice?

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Frequently asked questions

We'll generally need to tell them limited information, such as your name. The law prevents us from disclosing any more information than is necessary to obtain or verify the information we need.

Your notice provides the date range within which we may contact third parties.

We'll send you a copy of the contact list once a year. If you don’t receive a list, it means we didn’t contact anyone who we’re required to advise you of.

Filing my missing returns

Read your notice carefully to identify which tax returns are missing from IRS records. You may need to file returns from multiple tax years.

You can find information about how to prepare your return at Filing your taxes.

If it's been over 10 weeks since you sent us the return, send a signed copy of it to us again. If you find that one or more of your returns were incorrectly reported as missing, please contact us using the toll-free phone number in your notice.

Use the Do I need to file a tax return? tool to verify that you don’t meet the filing requirements for the tax years involved. If the tool indicates you’re not required to file a return, but the notice indicates you are, please call the toll-free number in your notice.

Based on your income and other factors, you may still be required to file even if you’re due a refund. Also, to receive the refund, you must file a delinquent return within three years of the original return due date, or within two years of the date you full paid the tax, if applicable.

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