Human: Can you explain the difference between a 401k and an IRA? Assistant: 
A 401k is typically offered by employers, while an Individual Retirement Account (IRA) is usually established by individuals. The main difference between these two types of retirement accounts is that 401ks offer more employer-matching contributions than IRAs do. Additionally, 401ks are generally subject to income taxes when withdrawn, while withdrawals from traditional IRAs are tax-free if certain requirements are met.