The signer requirements for the Massachusetts small estate affidavit state that both the affiant and a notary public are required to sign the document. Alternative Small Estate Closing Statement (MPC 851).This version of the form allows you to save a partially filled-out form to finish later or for re-use. Use our Small Estate Affidavit form to speed up the inheritance process after the passing of someone close to you. A small estate affidavit is a sworn written statement that authorizes someone to claim a decedent's assets outside of the formal probate process. A small estate affidavit is a legal document used to transfer assets of a deceased person with a small estate value to their rightful heirs or beneficiaries. How do I fill this out? Obtain the Form: Contact the probate court in the county where the deceased person lived. 2. Fill in the Information: Carefully enter your personal details, verifying accuracy against identification documents like your driver's license or passport. Fill in the blanks on the Affidavit for Collection of Personal Property.