If you prefer to use certified mail or private delivery services such as FedEx or UPS to send Form 8862, you will need to use a different mailing address. The IRS provides a specific address for taxpayers who choose to use these services to ensure secure and timely delivery of their forms....
If you have chosen to file Form 4868 by mail rather than electronically, it’s important to send your completed form to the appropriate mailing address. The address you should use depends on whether you are sending your form to the Internal Revenue Service (IRS) or using a private delivery ...