A limited power of attorney specifies the authority the agent will have. The principal lists all the matters for which the agent will make decisions, sign documents or give instructions. Often, a limited power of attorney covers only a single process or matter; for example, a contract signing which the principal is unable to carry out due to absence or illness.
The principal may also limit a power of attorney to a single field of activity, such as the handling of investments. A principal who trusts an agent to make decisions and sign paperwork related to an account may grant a limited power of attorney to an investment adviser.
A principal may also limit a power of attorney to a specific period of time. This often occurs when a principal is temporarily absent from his home or business and trusts an aide or friend to carry out business decisions and sign paperwork on his behalf.
The principal must sign, date and have witnessed the limited power of attorney, which must set out in detail the scope of the agent's authority. This includes specific information on the accounts, negotiations or other mechanisms by which the agent may operate. Most limited powers of attorney also contain a revocation clause, which the principal may sign and date at any time in order to void the document and bring the agent's authorities to an end.