human
What's the difference between the 401k, the 403b, the 457, and the IRA?
assistant
The main difference between these retirement accounts is the type of contributions they allow. A 401(k) allows employees to contribute a certain percentage of their salary on a pre-tax basis, while an IRA (Individual Retirement Account) allows individuals to make both pre-tax and post-tax contributions. Additionally, employers can offer additional retirement benefits such as matching funds, tax deductions or credits, and other features that may be unique to each plan.