The Massachusetts Deferred Compensation SMART Plan is a voluntary retirement savings program. When filing your Massachusetts income tax return, you must use the amount shown for state wages (Box 16).Can You Amend a Return? Completing Your Form 940. To Have Forms Mailed to You. To have PERS mail you a form, fill out the contact information below and then select the box to the left of your desired form. You'll have the choice between an indemnity plan or a network plan. You'll also be able to sign up for individual benefits or a family plan. Find your employer's plan. Our vision is to transform financial lives through advice, people and technology.