There are many different types of contracts. The type you use depends on what you need it for. One reason you may need a contract is when dealing with real estate. If you are purchasing a home it is always best to have a contract written up so that it is completely clear what the price is and what buyer and seller are both responsible for. Another time to use a contract is when purchasing or
. selling a car. If you loan someone money you may want to write up a contract so that both parties are in agreement on repayment and time frame for repayment. When dealing with important things such as buying or selling a home or car it is always in everyone's best interest to use a contract. Some people also like to use contracts when renting a home. These are sometimes called a lease. In this contract you should always state what the tenant is responsible to do to the property such as lawn maintenance or trash removal. This should also state all tenants renting the property and the landlords requirements for terminating early and other things the parties may disagree on if it has to go to court. Having something in writing such as a contract or lease will always help a judge if needed. Another thing to remember is contracted should always be witnessed by an unbiased party and notarized. Most banks and libraries have notaries available for a small fee.