When planning for retirement, two of the most common savings options are the Roth IRA and the 401(k). While both help you build wealth for your future, they differ in key ways—especially in how they’re taxed, who manages them, and how much you can contribute. Understanding these differences is essential to making informed decisions about your financial future. 1. Tax Treatment: Pay Now or Later? The most significant difference between a Roth IRA and a 401(k) is when you pay taxes. There is also a Roth 401(k), which works like a Roth IRA but is employer-sponsored with higher contribution limits. 2. Contribution Limits (2025) How much you can contribute annually is another key difference: If you’re a high earner, a 401(k) allows for significantly more savings per year. 3. Who Offers the Account 4. Employer Contributions One big advantage of a 401(k) is the employer match—essentially free money added to your retirement savings. If your employer offers a match, it’s wise to contribute at least enough to get the full match. 5. Required Minimum Distributions (RMDs) 6. Early Withdrawal Rules 7. Investment Flexibility Roth IRA vs. 401(k): A Side-by-Side Comparison Feature Roth IRA 401(k) Tax Treatment After-tax contributions Pre-tax contributions