401k

In USA, a 401(k) retirement savings plan allows an employee to save for retirement and have the savings invested while deferring current income taxes on the saved money and earnings until withdrawal. The employee elects to have a portion of his or her wages paid directly, or "deferred," into his or her 401(k) account. This deferment is also known as a "contribution."

401(k) plans are mainly employer sponsored plans; the employer can, as a benefit to the employee, optionally choose to "match" part or all of the employee's contribution by depositing additional amounts in the employee's 401(k) account or simply offer a profit sharing contribution to the plan. In participant-directed plans (the most common option), the employee can select from a number of investment options, usually an assortment of mutual funds that emphasize stocks, bonds, money market investments, or some mix of the above. Many companies' 401(k) plans also offer the option to purchase the company's stock. The employee can generally re-allocate money among these investment choices at any time. In the less common trustee-directed 401(k) plans, the employer appoints trustees who decide how the plan's assets will be invested.

Contribution Limits

Maximum limit on the total yearly employee pre-tax salary deferral. The limit, known as the "401(k) limit", is $15,500 for the year 2008 and $16,500 for 2009 and 2010. For future years, the limit may be indexed for inflation, increasing in increments of $500. Employees who are 50 years old or over at any time during the year are now allowed additional pre-tax "catch up" contributions of up to $5,000 for 2008 and $5,500 for 2009. The limit for future "catch up" contributions may also be adjusted for inflation in increments of $500. In eligible plans, employees can elect to have their contribution allocated as either a pre-tax contribution or as an after tax Roth 401(k) contribution, or a combination of the two. The total of all 401(k) contributions must not exceed the maximum contribution amount.