Roth versus traditional is mostly a tax-timing question. Roth contributions pay tax now and aim for qualified tax-free withdrawals later. Traditional pre-tax contributions can reduce taxable income now, but withdrawals are generally taxed later.
Enter your current tax rate, expected retirement tax rate, contribution amount, time horizon, and return assumption. The calculator compares the after-tax value of each path and helps you decide when a split strategy is more realistic than choosing only one bucket.
What you can do
- Roth and pre-tax contribution comparison
- Current and retirement tax-rate assumptions
- Contribution amount and investment horizon modeling
- After-tax retirement value output
- Split-contribution planning when the tax answer is uncertain
Frequently asked questions
Is Roth always better for young savers?
Not always, but it often gets more attractive when current income and tax rates are lower than expected future rates. The calculator makes that tax-rate assumption explicit.
What if I do not know my retirement tax rate?
Run a range. If the answer changes across reasonable assumptions, splitting contributions between Roth and traditional accounts can reduce regret.
How does an employer match affect Roth vs traditional?
Employer matches are usually contributed pre-tax even if your own contribution is Roth. Include the match in the retirement plan, but compare your own Roth and traditional contribution choice separately so the tax tradeoff stays clear.
Can I split between Roth and traditional contributions?
Yes, when your plan allows it. Splitting can be useful when you are unsure about future tax rates, expect income to change, or want both taxable-income flexibility now and tax-diversified withdrawals later.
Which tax rate should I compare?
Compare the marginal tax rate on the dollars you contribute today with the expected tax rate on withdrawals later. The harder part is that retirement income can come from several buckets, so run low, middle, and high tax-rate scenarios.
Ready to run the numbers?
The Roth vs Traditional Calculator is in a private preview while we finish testing.
In private preview — not open to new accounts yet.
Related calculators
Other planning tools that pair well with the Roth vs Traditional Calculator.