What this notice is about We couldn't locate the return you said was previously filed. What you need to do Read the notice carefully to determine the required form we need. If you have a copy of the original return, please re-sign it and send it to us. If you don't have a copy of the return, visit Forms & Instructions to get a new form or call 800-829-3676. Fill out the Contact Information section of the notice, detach it and send it to us with your re-signed copy or completed form so we receive it by the due date on the notice. You may want to Review your records to ensure we didn't send the original return back because of missing signatures or missing information. Frequently asked questions What happens if I don't respond by the due date? We may consider your return delinquent and begin collection enforcement to secure the return. Who do I call for assistance? For assistance with your business return, call 800-829-0115 or for assistance with Form 990-T, Exempt Organization Business Income Tax Return, call 877-829-5500. Reference tools Publication 1, Your Rights as a Taxpayer Full list of tax forms and instructions 需要協助嗎？ 您可以授權某人（英文）代表您向國稅局聯絡。 請查看您是否符合從低收入納稅人協助中心（英文）獲得協助的資格。 如果您無法在線上找到您需要的資訊，請撥打您的通知或信件上方的國稅局號碼。如果您未收到信件或通知，請使用電話協助。 如果您無法自行解決罰款，請聯絡 IRS 內部的獨立組織——納稅人權益維護服務處。
