A 401(k) is a retirement savings and investing plan that employers offer. A 401(k) plan gives employees a tax break on money they contribute. Contributions are automatically withdrawn from employee paychecks and invested in funds of the employee’s choosing
The general rule of thumb is to aim to invest 15% of your gross income into your 401(k), including your employer match. But the exact target for you depends on your life stage and investing goals and the aggressiveness of your portfolio
Its the least-risky investment in a 401(k) would be either money market funds or U.S. government bonds (known as Treasuries). However, these investments will typically offer a very low rate of return and may not keep up with inflation.