This section of the 4-part series will cover fundamentals of Form 706 with numerous examples of how to properly report deductions on the estate tax return, including the marital and charitable deductions. Form 706 Series: Form 706 Preparation Part 1: Overview Including Portability Form 706 Preparation Part 2: Reporting Assets Form 706 Preparation Part 3: Reporting Deductions Form 706 Preparation Part 4: GST Schedule R, Form 8971, Payments & Credits