A 401k is a retirement plan that is used exclusively in theUnited States. An employee elects to have a portion of his or herwages diverted in a savings account, or a 401k. Some companiesoffer benefits for employees, where they match a portion of thewages that are redirected to the 401k account. Many of theinvestments of a 401k are tax deferrable, making it a very goodinvestment option. Many 401k plans comprise of company stock,mutual funds, and bonds. This means that after you retire, thesuccess of the company will have a lot to do with how well your401k is doing. As with any other investment, you must do a lot ofresearch before deciding which plan is best for you. However, sinceall 401ks are tax deferrable, any money that you should choose toput aside will be deducted from your yearly ear