A Quick Guide On How To Invest In A 401(K), Early Withdrawals And 401(K) Loans. What is 401(k) Put simply, 401(k) is a way (retirement savings account) which helps you to reduce your taxable income. 401(K) Offers Convincing Benefits. Here is a guide to 401(k). 401(k) reduces your taxable income as contributions are provided […]