Roth vs. Traditional is one of the most important financial decisions you'll make. The difference can be worth hundreds of thousands of dollars.
The Core Difference
| Traditional | Roth | |
|---|---|---|
| Tax break now? | Yes | No |
| Tax break later? | No | Yes |
| Pay taxes on... | Withdrawals in retirement | Contributions now |
Traditional: Pay taxes LATER Roth: Pay taxes NOW
How Each Works
Traditional 401(k) or IRA
- Contribute pre-tax money ($1,000 contribution costs you ~$750 after tax savings)
- Money grows tax-deferred
- Pay income tax when you withdraw in retirement
Roth 401(k) or IRA
- Contribute after-tax money ($1,000 contribution costs you $1,000)
- Money grows tax-FREE
- Withdrawals in retirement are 100% tax-free
When to Choose Roth
Roth is likely better if:
| Situation | Why Roth Wins |
|---|---|
| Early in career (low income) | You're in a low now |
| Income will grow significantly | You'll pay more taxes later |
| Want tax-free retirement income | Flexibility and certainty |
| Already have lots in Traditional | Tax |
| Worried about future tax rates | Hedge against tax increases |
When to Choose Traditional
Traditional is likely better if:
| Situation | Why Traditional Wins |
|---|---|
| High earner now | Get the tax break when it matters most |
| Near retirement | Less time for tax-free growth |
| Expect lower retirement income | You'll be in a lower bracket later |
| Need to reduce taxable income now | AGI affects other benefits |
| Maxing out contributions | Pre-tax means you're saving "more" |
The "Both" Strategy
This gives you options in retirement—withdraw from whichever bucket makes sense that year.
The Math Example
$6,000/year for 30 years, 7% return:
| Account Type | Final Balance | After-Tax Value* |
|---|---|---|
| Roth | $566,000 | $566,000 (100%) |
| Traditional | $566,000 | $424,500 (75%)** |
*Assuming 25% tax bracket in retirement **You'll owe taxes on Traditional withdrawals
The Roth wins IF you would have invested the tax savings from Traditional. Most people don't.
Roth Conversion: A Middle Path
Have money in a Traditional account? You can convert it to Roth:
- Pay taxes NOW on the converted amount
- Future growth is tax-free
- Good strategy in low-income years