Should I choose a Roth 401(k) or a Traditional 401(k) for retirement savings?

The choice between a Roth 401(k) and a Traditional 401(k) primarily depends on whether you expect your income tax rate to be higher or lower in retirement compared to your working years. Roth contributions are post-tax, leading to tax-free withdrawals in retirement, while Traditional contributions are pre-tax, reducing current taxable income and deferring taxes until retirement.