Your employer-sponsored 401(k) is a simple, automated, and tax-advantaged way to save for retirement. There is no question you should use a 401(k) if your employer provides one. What you may need help deciding, though, is how much you should contribute to enable a comfortable retirement. Experts recommend saving 10% to 15% of your income to your 401(k) but this can vary depending on your situation. Let's walk through the factors to consider. Learn more: What is a 401(k)? A guide to the rules and how it ...