What this notice is about We credited payments and/or other credits to your tax account for the form and tax period shown on your notice. However, we haven't received your tax return. What you need to do If you are required to file this tax return, please file today. Send your signed tax return to the address shown on the top of this notice. Frequently asked questions What if I have already filed this return? Please send a newly signed copy to the address shown on the top of your notice. Due to processing delays for 2019 and 2020 tax returns, the issuance of CP80 and CP080 (Unfiled tax return – Credit on account) notices has been suspended. If you received a notice for your 2019 return and you filed timely, please refile the return. If you received a notice for your 2020 return DO NOT refile. What if I want the credit transferred to another tax form, tax period or tax identification number? Please call us at 800-829-8374 to give us details of the account to which the credit should be transferred. Reference tools Publication 1, Your Taxpayer Rights Publication 5027, Identity Theft Information for Taxpayers PDF Full list of tax forms and instructions 是否需要帮助？ 您可以授权他人（英文）代表您联系国税局。 查看一下您是否有资格获得低收入纳税人诊所的帮助（英文）。 倘若您在网上未能找到所需信息，请拨打通知或信函顶部的国税局电话号码。倘若您未收到信函或通知，请使用电话协助。 如果您不能自行解决罚款问题，请联系纳税人权益服务处，这是国税局内部的一个独立机构。
