You might want to read this IRS publication - it tells you how the return must be signed and what might need to be attached.
Suggest that you read IRS Pub 559 (Survivors, Executors, and Administrators) for a lot of good information about filing the final return and estate return and other requirements.
<a rel="nofollow" target="_blank" href="
https://www.irs.gov/pub/irs-pdf/p559.pdf">https://www.irs.gov/pub/irs-pdf/p559.pdf</a>
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
