What this letter is about We previously contacted you to file your federal tax returns, but we didn’t receive a response. You must file your tax returns immediately. What you need to do Send your completed tax returns and payment to the address on the letter within 10 days from the date of your letter. If you’ve already filed a tax return, call us at the number on the letter. If you’re not required to file a tax return, call us at the number on the letter. Frequently asked questions Which tax returns are missing? Read your notice carefully to identify which tax returns are missing from IRS records. You may need to file returns from multiple tax years. How do I file my missing returns? You can find information about how to prepare your return at Filing Your Taxes. How can I determine if I'm required to file? Use the Do I Need to File A Tax Return? tool to see if you meet the filing requirements for the tax years involved. If the tool indicates you’re not required to file a return, but your letter indicates you are, please call the toll-free number on your letter. What if I already filed the returns? If you filed the returns more than 10 weeks ago, send us a signed copy, and please call the toll-free phone number on your letter. Do I have to file if I'm due a refund? 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 from the original return due date, or within two years from the date you full paid the tax, whichever is later. I owe taxes. What do I do if I can't pay the full balance at the time of filing? Pay what you can now to reduce the amount of interest and applicable penalties. You can enter into an installment agreement to pay, over time, any remaining balance on your account. If you owe less than $50,000, you may be able to set up an installment agreement using the Online Payment Agreement tool, which is the fastest way to get an installment agreement approved. If you can’t apply online, call us at the toll-free number on your letter, or complete and send us Form 9465, Installment Agreement RequestPDF. Reference tools Publication 1, Your Rights as a Taxpayer Full list of tax forms and instructions Need help? You can authorize someone to contact the IRS on your behalf. See if you qualify for help from a Low Income Taxpayer Clinic. If you can’t find what you need online, call the IRS number at the top of your notice or letter. If you didn’t receive a letter or notice, use telephone assistance. If you can't resolve the penalty on your own, contact Taxpayer Advocate Service, an independent organization within IRS.