Function

• A joinder agreement expresses a donor's consent to disperse the funds of a trust account and make investments on behalf of the trust as outlined in the master trust agreement.
  
  

Parties

• The trust's donor and the manager of the trust execute the joinder agreement for it to be valid and legal.
  
  

Features

• Joinder agreements designate a trust manager and list parties who may disperse the trust's funds to the beneficiary.
  
  

Effect

• Joinder agreements are legally binding once they are executed by each party to the agreement.
  
  

Warning

• The legal definition of a joinder agreement varies by state. Consult an attorney for your state's statues and procedures regarding trust funds.