The choice between tax deduction now (Traditional) or tax-free withdrawals (Roth).
The fundamental choice between Traditional and Roth retirement accounts is: do you want a tax break now (Traditional) or tax-free withdrawals in retirement (Roth)? Traditional IRA/401(k): contributions are tax-deductible (lowering taxable income now), but withdrawals in retirement are taxed as ordinary income. Roth IRA/401(k): contributions are made with after-tax dollars (no immediate deduction), but qualified withdrawals are completely tax-free. Choose Traditional if: you're in a high tax bracket now and expect lower taxes in retirement. Choose Roth if: you're in a low tax bracket now or expect higher taxes in retirement (or want tax-free growth). Roth offers flexibility (no RMDs, early withdrawal access to contributions, better for heirs), making it attractive for younger investors. Higher earners are phased out of Roth contributions but can use backdoor Roth strategies.