Decide when to pay taxes on your savings—now or later
Before-tax contributions are deposited into your account before being taxed. This lowers your taxable income, which lowers your current income tax bill. You will pay taxes many years down the road when you take withdrawals.
Roth 401(k) after-tax contributions are deposited into your account after being taxed. You can then withdraw Roth savings in retirement completely tax-free.*