List Of 401K Retirement Plan Definition Ideas. Web a 401 (k) is a retirement savings and investing plan offered only by employers. Web a 401 (k) plan is a retirement savings plan offered by many american employers that has tax advantages for the saver.

Qualified plans come in two versions. Because of 401 (k) tax advantages, the federal government imposes some restrictions about when you can withdraw your 401 (k) contributions. Key takeaways a traditional 401(k) grants an upfront tax break, but you'll have to pay taxes when you take distributions.