Casualty Theft or Installment Sale Smart Worksheet For gain due to a casualty/theft (involuntary conversion): ► Check the box in the Casualties/Thefts column for that property. ► Complete lines 20 through 29 below, then review Form 4684, line 33. OulckZoom to view Form 4684, line 33 For properties sold on the installment method: ► Double-click in the Installment Sales column to link to a copy of Form 6252. ► Complete lines 20 through 29 below, then complete the related Form 6252. OulckZoom to Form 6252 Casualties/Thefts Installment Sales A Property A B Property B C Property C D Property D EFTA01220511