Planning for retirement involves several important financial decisions, and one of the most common questions is whether to contribute to a Roth 401(k) or a Traditional 401(k).
401(k) Roth vs Traditional Calculator
Compare your estimated retirement savings and after-tax income with a Roth 401(k) versus a Traditional 401(k).
Both retirement savings options offer valuable tax advantages, but they differ in how contributions and withdrawals are taxed. Choosing between them can affect your current take-home pay, future retirement income, and overall financial planning strategy.
A Traditional 401(k) generally allows eligible contributions to reduce your current taxable income, while withdrawals are typically subject to income tax during retirement.
A Roth 401(k), on the other hand, uses after-tax employee contributions. Although you do not receive an immediate income tax deduction, qualified withdrawals can be completely tax-free.
Understanding these differences is essential when deciding how to allocate your retirement contributions.
Our 401(k) Roth vs Traditional Calculator is a free online retirement planning tool designed to compare the estimated after-tax value of Roth and Traditional 401(k) savings.
The calculator considers your annual salary, retirement contributions, employer matching contributions, current tax rate, expected retirement tax rate, investment returns, contribution increases, inflation, and years until retirement.
It also estimates investment growth, retirement withdrawal taxes, current Traditional contribution tax savings, and inflation-adjusted retirement values.
Whether you are beginning your retirement savings journey or reviewing your existing 401(k) strategy, this calculator can help you explore how different assumptions affect your projected retirement savings.
What Is a 401(k) Roth vs Traditional Calculator?
A 401(k) Roth vs Traditional Calculator is a financial planning tool that compares two types of employer-sponsored retirement contributions.
It estimates how much money you could accumulate in each option and how taxes may affect the amount available during retirement.
The comparison focuses on two retirement savings approaches.
Traditional 401(k): Eligible employee contributions are generally made before federal income taxes, reducing current taxable income. Distributions are generally taxable when withdrawn.
Roth 401(k): Employee contributions are made with after-tax dollars. Qualified withdrawals, including eligible investment earnings, are generally tax-free.
Both options allow investments to grow inside a tax-advantaged retirement account.
However, the timing of taxation creates important differences.
Our calculator compares these options using the same stated annual personal contribution amount and investment return assumptions.
It also accounts for employer matching contributions when you choose to include them.
The results help illustrate how current and future tax rates can influence retirement savings.
Important: The calculator does not invest the current tax savings generated by Traditional contributions. Therefore, its after-tax account comparison should not be interpreted as a complete comparison of equal take-home-pay costs.
How to Use the 401(k) Roth vs Traditional Calculator
Our online calculator allows you to compare retirement savings using your financial assumptions.
Follow these steps to calculate your estimated results.
Step 1: Enter Your Annual Gross Salary
Enter your annual salary before taxes and deductions.
For example:
Annual Gross Salary = $80,000
Your salary provides a reference for your annual retirement contribution.
The calculator requires your personal contribution to be no greater than your entered annual salary.
Step 2: Enter Your Annual 401(k) Contribution
Enter the amount you plan to contribute to your 401(k) each year.
For example:
Annual Contribution = $8,000
The calculator uses the same personal contribution amount for both Roth and Traditional scenarios.
This allows you to compare how different tax treatments affect the accumulated retirement balance.
Remember that employee 401(k) contributions are subject to annual IRS limits and applicable eligibility rules.
The calculator does not automatically enforce those limits.
Step 3: Enter Your Annual Employer Match
If your employer provides matching contributions, enter the estimated annual amount.
For example:
Employer Match = $2,000
Employer contributions can significantly increase long-term retirement savings.
The calculator allows you to include the employer match as a Traditional, pre-tax contribution or exclude it from the comparison.
Step 4: Enter Your Current Marginal Federal Tax Rate
Enter your estimated current marginal federal income tax rate.
For example:
Current Tax Rate = 22%
This rate is used to estimate the immediate federal income tax savings associated with Traditional employee contributions.
A marginal tax rate represents the rate applied to an additional dollar of taxable income within the relevant tax bracket.
It is different from your effective tax rate.
Step 5: Enter Your Expected Retirement Tax Rate
Enter the estimated tax rate you expect to apply to taxable retirement withdrawals.
For example:
Retirement Tax Rate = 15%
This is one of the most important assumptions in the comparison.
A higher retirement tax rate generally makes tax-free Roth withdrawals more valuable.
A lower retirement tax rate may make Traditional contributions more attractive when their current tax savings are considered.
The calculator applies the entered retirement tax rate uniformly to modeled Traditional withdrawals.
Actual retirement taxes may depend on multiple tax brackets, other income sources, deductions, and future tax laws.
Step 6: Enter the Expected Annual Investment Return
Provide your assumed annual investment growth rate.
For example:
Annual Investment Return = 7%
The calculator uses this rate to project how retirement contributions may grow over time.
Investment returns are not guaranteed and may vary significantly from year to year.
Step 7: Enter Years Until Retirement
Enter the number of years remaining before retirement.
For example:
Years Until Retirement = 25
A longer investment period generally provides more opportunities for compound growth when investment returns are positive.
Step 8: Enter the Annual Contribution Increase
If you expect your personal retirement contributions to increase over time, enter the estimated annual percentage.
For example:
Annual Contribution Increase = 3%
This means your personal contribution increases by 3% each year.
The calculator keeps the entered annual employer match fixed.
Step 9: Enter the Expected Inflation Rate
Enter your assumed annual inflation rate.
For example:
Expected Inflation = 2.5%
The calculator uses this value to estimate the purchasing power of your retirement savings in today’s dollars.
Step 10: Select Employer Match Treatment
Choose whether to include or exclude employer matching contributions.
Available options are:
Traditional / Pre-Tax Match: Includes employer contributions and treats them as taxable upon withdrawal.
Exclude Employer Match: Calculates the results without employer matching contributions.
Step 11: Click Calculate
After entering the required information, click Calculate.
The calculator displays the estimated retirement savings comparison.
You can click Reset to return to the default values and perform another calculation.
Roth 401(k) vs Traditional 401(k): What’s the Difference?
The primary difference between Roth and Traditional 401(k) contributions is when income taxes are paid.
Traditional 401(k)
A Traditional 401(k) generally allows eligible employee contributions to reduce current federal taxable income.
For example, suppose your annual salary is $80,000 and you contribute $8,000 to a Traditional 401(k).
Ignoring other adjustments, your federal taxable compensation attributable to salary may be reduced by the $8,000 contribution.
This can produce immediate income tax savings.
However, withdrawals from the Traditional account are generally subject to income taxes.
Roth 401(k)
A Roth 401(k) uses after-tax employee contributions.
If you earn $80,000 and contribute $8,000 to a Roth 401(k), that contribution generally does not reduce your current federal taxable income.
However, qualified Roth distributions can be tax-free.
This includes eligible investment earnings.
Key Comparison
| Feature | Traditional 401(k) | Roth 401(k) |
|---|---|---|
| Employee contributions | Generally pre-tax | After-tax |
| Current federal income tax deduction | Generally yes | No |
| Investment growth | Tax-deferred | Potentially tax-free |
| Qualified retirement withdrawals | Generally taxable | Generally tax-free |
| Employer contributions | Pre-tax or eligible designated Roth treatment | Depends on plan rules |
| Best tax environment | Often lower retirement tax rates | Often higher retirement tax rates |
Neither option is automatically better for everyone.
The appropriate choice depends on tax rates, retirement goals, cash flow, and individual circumstances.
How Does the 401(k) Roth vs Traditional Calculator Work?
The calculator projects annual retirement account growth using three main assumptions.
First, the existing account balance grows by the expected annual investment return.
Second, the annual personal contribution is added.
Third, any included employer matching contribution is added.
The calculation assumes contributions occur at the end of each year.
Retirement Savings Growth Formula
For a constant annual contribution, the future value of an ordinary annuity is:
FV = P × [((1 + r)^n − 1) / r]
Where:
FV = Future value
P = Annual contribution
r = Annual investment return expressed as a decimal
n = Number of years
This formula assumes contributions occur at the end of each year.
If the annual return is zero, the formula simplifies to:
FV = P × n
When contributions increase annually, the calculator projects each year’s contribution individually.
Annual Balance Formula
Ending Balance = Previous Balance × (1 + r) + Annual Contribution + Employer Match
The calculator repeats this process for every year until retirement.
It then estimates the after-tax value of the Traditional and Roth balances.
Example: Roth vs Traditional 401(k) Calculation
Suppose you enter the following values:
Annual Salary = $80,000
Annual Personal Contribution = $8,000
Annual Employer Match = $2,000
Current Marginal Tax Rate = 22%
Expected Retirement Tax Rate = 15%
Annual Investment Return = 7%
Years Until Retirement = 25
Annual Contribution Increase = 0%
Expected Inflation = 2.5%
Employer Match = Traditional / Pre-Tax
Step 1: Calculate Total Annual Retirement Contributions
Personal Contribution = $8,000
Employer Match = $2,000
Total Annual Contribution:
$8,000 + $2,000 = $10,000
Step 2: Calculate Future Retirement Balance
Using the future value formula:
FV = 10,000 × [((1.07)^25 − 1) / 0.07]
The estimated future value is approximately:
$632,490
This is the combined account value before considering retirement taxes.
Step 3: Calculate Traditional 401(k) After-Tax Value
The calculator applies the assumed 15% retirement tax rate to the modeled Traditional balance.
Estimated Withdrawal Taxes:
$632,490 × 15% = $94,874
Estimated After-Tax Traditional Value:
$632,490 − $94,874
Traditional After-Tax Value ≈ $537,617
Step 4: Calculate Roth 401(k) After-Tax Value
In the Roth scenario, personal contributions and qualifying earnings are treated as tax-free at retirement.
The included employer match is treated as Traditional and taxable.
Under the calculator’s simplified match allocation, the estimated employer portion is $50,000, representing 25 annual matching contributions of $2,000.
The remaining balance is attributed to Roth employee savings.
Estimated Roth Employee Portion:
$632,490 − $50,000 = $582,490
Estimated After-Tax Employer Portion:
$50,000 × 85% = $42,500
Estimated Roth After-Tax Value:
$582,490 + $42,500
Roth After-Tax Value ≈ $624,990
Step 5: Compare the Results
Traditional After-Tax Value ≈ $537,617
Roth After-Tax Value ≈ $624,990
Estimated Roth Advantage:
$624,990 − $537,617
Estimated Difference ≈ $87,374
Under these assumptions, the calculator shows a higher after-tax retirement account value for the Roth option.
However, this does not include investing the current income tax savings from Traditional contributions.
It also uses a simplified employer-match allocation that does not separately compound the employer contributions for tax purposes.
Therefore, the result is an illustration of the calculator’s model rather than a definitive determination of which contribution type produces more wealth.
How to Calculate Traditional 401(k) Tax Savings
Traditional 401(k) employee contributions can reduce current federal taxable income.
The approximate immediate federal income tax savings can be calculated using:
Tax Savings = Traditional Contribution × Current Marginal Tax Rate
Example
Annual Traditional Contribution = $10,000
Current Marginal Federal Tax Rate = 22%
Calculate:
Tax Savings = $10,000 × 0.22
Estimated Annual Federal Tax Savings = $2,200
This means an eligible $10,000 Traditional contribution may reduce current federal income tax by approximately $2,200 under the assumed marginal rate.
The actual savings depend on your tax situation.
Traditional 401(k) contributions generally do not reduce Social Security and Medicare payroll taxes.
Tax Savings Over Multiple Years
If you contribute $10,000 annually for 20 years and your marginal rate remains 22%:
Total Estimated Tax Savings:
$10,000 × 20 × 22%
Total = $44,000
Our calculator adds these estimated annual savings across the contribution period.
It does not calculate investment growth on those tax savings.
How Roth 401(k) Withdrawals Are Taxed
Roth 401(k) employee contributions are made using after-tax income.
Qualified distributions are generally excluded from federal taxable income.
For a designated Roth account, a qualified distribution generally requires both:
- Satisfaction of the applicable five-tax-year participation requirement.
- A qualifying event, such as reaching age 59½, disability, or death.
Withdrawals that do not satisfy the qualified distribution requirements may have different tax consequences.
For example, the earnings portion of a nonqualified distribution may be taxable.
Our calculator assumes qualified Roth withdrawals.
It does not calculate early withdrawal penalties or taxes associated with nonqualified distributions.
How Traditional 401(k) Withdrawals Are Taxed
Traditional 401(k) contributions and investment earnings are generally taxed as ordinary income when distributed.
Suppose your Traditional 401(k) balance at retirement is:
$500,000
If you assume a uniform 20% withdrawal tax rate:
Estimated Taxes = $500,000 × 0.20
Estimated After-Tax Value:
$500,000 − $100,000
After-Tax Retirement Value = $400,000
In reality, withdrawing an entire balance in one year may create a very different tax result than withdrawing money gradually over retirement.
Your actual tax liability depends on taxable income, deductions, applicable tax brackets, and other factors.
The calculator uses a single assumed retirement tax rate to simplify the comparison.
The Importance of Current vs Retirement Tax Rates
One of the biggest factors when choosing between Roth and Traditional 401(k) contributions is the relationship between your current tax rate and expected future tax rate.
When Your Current Tax Rate Is Higher
Suppose:
Current Marginal Tax Rate = 32%
Expected Retirement Tax Rate = 15%
Traditional contributions may be attractive because you can potentially receive a larger tax benefit today and pay taxes at a lower rate later.
This assumes the current tax savings are used effectively.
When Your Retirement Tax Rate Is Higher
Suppose:
Current Marginal Tax Rate = 12%
Expected Retirement Tax Rate = 25%
Roth contributions may be attractive because you pay taxes at the lower current rate and may avoid higher taxes on qualified retirement withdrawals.
When Both Tax Rates Are Equal
If the tax rate is identical when contributing and withdrawing, Roth and Traditional contributions can produce equivalent after-tax wealth under certain assumptions.
This requires comparing equal amounts of pre-tax income and accounting for the Traditional tax savings.
For example, if you have $10,000 of pre-tax income available and the tax rate is 20%:
Traditional contribution:
$10,000 invested before tax
Roth contribution:
$8,000 invested after paying $2,000 in tax
If both investments grow by the same factor and the withdrawal tax rate remains 20%, their after-tax values are equal.
This illustrates why comparing equal nominal account contributions is not the same as comparing equal economic costs.
How Employer Matching Contributions Affect Retirement Savings
Employer matching contributions are an important benefit of many workplace retirement plans.
An employer may contribute additional money based on your own retirement contributions.
For example, suppose:
Annual Salary = $80,000
Employee Contribution = $8,000
Employer Match = $4,000
Your combined annual retirement contribution would be:
$8,000 + $4,000
Total = $12,000
Over time, employer contributions can significantly increase retirement savings.
Employer Match Tax Treatment
Employer contributions are commonly made on a Traditional, pre-tax basis.
However, under applicable rules, some employer plans may permit eligible matching or nonelective contributions to be designated as Roth contributions.
Such arrangements have specific tax and plan requirements.
Our calculator provides a Traditional/pre-tax match option and an option to exclude employer contributions.
It does not model designated Roth employer matching contributions separately.
Important Employer Match Calculation Limitation
The calculator includes employer contributions in annual investment growth.
However, when calculating after-tax Roth value, it subtracts the nominal total employer contributions rather than their separately accumulated investment value.
As a result, some investment earnings attributable to the Traditional employer match are effectively treated as Roth earnings in the simplified model.
This can overstate the estimated after-tax Roth value when an employer match is included and investment returns are positive.
For a more precise comparison, employer and employee balances should be tracked separately throughout the investment period.
How Annual Contribution Increases Affect Your 401(k)
Increasing retirement contributions over time can help build a larger account balance.
The calculator includes an annual contribution increase option.
Contribution Growth Formula
Future Annual Contribution = Initial Contribution × (1 + g)^n
Where:
g = Annual contribution growth rate
n = Number of annual increases
Example
Initial Annual Contribution = $8,000
Annual Increase = 3%
After one increase:
$8,000 × 1.03 = $8,240
After two increases:
$8,240 × 1.03 = $8,487.20
After three increases:
$8,487.20 × 1.03 = $8,741.82
Over time, these increases may produce a substantially larger retirement balance.
However, employee contributions remain subject to applicable IRS contribution limits.
The calculator does not automatically stop contribution growth when those limits are reached.
How Inflation Affects Retirement Savings
Inflation reduces the purchasing power of money over time.
A retirement balance that appears large in future dollars may have less purchasing power than the same amount today.
Our calculator includes an inflation adjustment.
Inflation Adjustment Formula
Value in Today’s Dollars = Future Value / (1 + Inflation Rate)^Years
Example
Suppose your projected retirement savings are:
Future Retirement Value = $1,000,000
Expected Inflation = 2.5%
Years Until Retirement = 25
Apply the formula:
Today’s Value = 1,000,000 / (1.025)^25
The inflation-adjusted value is approximately:
$539,000
This means $1 million received 25 years from now would have purchasing power comparable to approximately $539,000 today if inflation averages 2.5% annually.
Inflation-adjusted projections help provide a more realistic perspective on future retirement savings.
Roth vs Traditional 401(k): Which Is Better?
Neither Roth nor Traditional 401(k) contributions are universally better.
The appropriate choice depends on individual circumstances.
When a Roth 401(k) May Be Attractive
A Roth 401(k) may be worth considering when you expect your retirement tax rate to be higher than your current rate.
It may also appeal to investors who value qualified tax-free retirement withdrawals.
Younger workers who currently have relatively low taxable income may find Roth contributions particularly useful.
When a Traditional 401(k) May Be Attractive
A Traditional 401(k) may be worth considering when your current marginal tax rate is relatively high and you expect a lower tax rate during retirement.
Traditional contributions may also help reduce current federal income tax liability.
The immediate tax savings can improve current cash flow or provide funds for additional saving.
Combining Roth and Traditional Contributions
Some employer plans allow participants to divide employee contributions between Roth and Traditional accounts.
Using both may provide additional flexibility when managing retirement taxes.
For example, a worker might allocate part of their contributions to a Traditional 401(k) and part to a Roth 401(k).
This creates a combination of taxable and potentially tax-free retirement savings.
Our calculator compares the two approaches separately rather than modeling a split contribution strategy.
What Are the Benefits of a Roth 401(k)?
A Roth 401(k) offers several potential advantages.
Qualified Tax-Free Withdrawals: Eligible retirement withdrawals can be free from federal income tax.
Tax-Advantaged Investment Growth: Investment earnings can accumulate without annual taxation inside the account.
Employer Plan Convenience: Contributions can be made through payroll deductions.
Tax Diversification: Roth savings can complement Traditional retirement accounts.
Potential Future Tax Protection: Qualified withdrawals may be attractive if future tax rates increase.
However, Roth contributions do not provide the immediate federal income tax deduction associated with Traditional contributions.
What Are the Benefits of a Traditional 401(k)?
A Traditional 401(k) also provides important advantages.
Current Income Tax Reduction: Eligible contributions generally reduce current federal taxable income.
Tax-Deferred Growth: Investments grow without annual taxation inside the account.
Potential Lower Retirement Tax Rate: Withdrawals may be taxed at lower rates if retirement taxable income is reduced.
Employer Matching Opportunities: Many workplace plans provide additional employer contributions.
Cash Flow Flexibility: Current tax savings may leave more take-home income available than equal nominal Roth contributions.
The main disadvantage is that Traditional withdrawals are generally taxable.
Understanding 401(k) Contribution Limits
The IRS establishes annual limits on employee 401(k) contributions.
These limits can change from year to year.
Additional catch-up contribution rules may apply to eligible participants based on age and other requirements.
There are also separate limits on total contributions, including applicable employer contributions.
When using the calculator, make sure your planned annual contribution complies with the relevant limits.
For accurate current-year limits, consult the latest IRS guidance or your employer’s retirement plan administrator.
The calculator does not automatically apply annual contribution caps, catch-up rules, or compensation-based plan restrictions.
Common Mistakes When Comparing Roth and Traditional 401(k)
Retirement comparisons can become misleading when important financial factors are overlooked.
Comparing Contributions Without Considering Taxes
An $8,000 Roth contribution generally costs more in current take-home pay than an $8,000 Traditional contribution.
A fair economic comparison should account for this difference.
Ignoring Traditional Tax Savings
Traditional contributions can generate current tax savings.
If those savings are invested, they may produce additional long-term wealth.
Our calculator displays estimated tax savings but does not invest them.
Assuming Investment Returns Are Guaranteed
An expected annual return is only a planning assumption.
Actual investment performance may be higher or lower.
Forgetting Employer Match Tax Treatment
Employer contributions may have different tax treatment from Roth employee contributions.
This matters when estimating retirement withdrawal taxes.
Ignoring Inflation
A future retirement balance does not necessarily represent the same purchasing power as money today.
Using Unrealistic Retirement Tax Rates
Your retirement tax rate may differ from your current expectations.
Future income, tax laws, and withdrawal strategies can influence the outcome.
Exceeding Annual Contribution Limits
Contribution amounts must comply with applicable retirement plan rules and IRS limits.
A calculator projection does not establish that a contribution is legally permitted.
Tips for Using the 401(k) Roth vs Traditional Calculator
To make the comparison more useful, start with realistic financial assumptions.
Enter your actual annual salary and a contribution amount that fits your budget.
Use your current marginal federal income tax rate rather than your overall effective tax rate when estimating the immediate benefit of Traditional contributions.
Consider several possible retirement tax rates instead of relying on a single prediction.
For example, you might calculate results using retirement tax rates of 15%, 20%, and 25%.
You can also test different investment return assumptions to see how sensitive your projections are to market performance.
Include employer contributions when they are relevant, but remember the calculator’s simplified employer-match tax treatment.
Consider inflation when evaluating the purchasing power of your projected savings.
Finally, distinguish between the calculator’s estimated after-tax account balances and a complete financial comparison that includes current taxes, invested tax savings, account fees, and future withdrawal strategies.
Frequently Asked Questions (FAQs)
1. What is a 401(k) Roth vs Traditional Calculator?
A 401(k) Roth vs Traditional Calculator is an online retirement planning tool that estimates and compares the future after-tax value of Roth and Traditional 401(k) savings.
It considers contributions, employer matching, investment returns, tax rates, and time until retirement.
2. What is the main difference between a Roth 401(k) and a Traditional 401(k)?
The primary difference is when income taxes are paid.
Traditional 401(k) contributions generally reduce current taxable income, while withdrawals are usually taxable.
Roth 401(k) contributions are made after tax, but qualified withdrawals can be tax-free.
3. Is a Roth 401(k) better than a Traditional 401(k)?
It depends on your current and expected future tax rates.
Roth contributions may be attractive when retirement tax rates are expected to be higher.
Traditional contributions may be attractive when current tax rates are higher than expected retirement rates.
4. How do you calculate Traditional 401(k) tax savings?
Multiply your eligible Traditional contribution by your current marginal federal tax rate.
Formula:
Tax Savings = Contribution × Marginal Tax Rate
For example, an $8,000 contribution at a 22% rate produces estimated federal tax savings of $1,760.
5. Are Roth 401(k) withdrawals tax-free?
Qualified Roth 401(k) withdrawals are generally free from federal income tax.
Qualification depends on applicable requirements, including the five-tax-year rule and a qualifying distribution event.
Nonqualified withdrawals may have different tax consequences.
6. Are Traditional 401(k) withdrawals taxable?
Yes. Traditional 401(k) withdrawals are generally subject to ordinary federal income tax.
The actual amount depends on your taxable income and applicable tax rules.
7. Does the calculator include employer matching contributions?
Yes. You can include an annual employer match or exclude it.
The included match is modeled as Traditional/pre-tax.
The calculator uses a simplified tax allocation for employer contributions, so results may differ from a model that separately tracks match earnings.
8. Can I contribute to both Roth and Traditional 401(k) accounts?
Yes, if your employer’s plan permits both contribution types.
However, combined employee contributions are subject to the applicable annual elective deferral limit.
9. How does the current tax rate affect the comparison?
The current marginal tax rate determines the estimated immediate income tax savings from Traditional employee contributions.
A higher current tax rate generally increases the value of the Traditional contribution’s immediate tax benefit.
10. How does the retirement tax rate affect the results?
The retirement tax rate determines the estimated taxes applied to Traditional retirement savings.
A higher assumed retirement tax rate reduces the modeled after-tax Traditional balance.
Qualified Roth employee withdrawals are assumed to be tax-free.
11. Does the calculator account for inflation?
Yes. The calculator adjusts projected after-tax retirement values using your entered annual inflation rate.
This helps estimate the future savings’ purchasing power in today’s dollars.
12. Does the calculator include annual contribution increases?
Yes. You can enter an annual percentage increase for personal contributions.
The calculator increases personal contributions each year while keeping the entered employer match fixed.
13. What investment return should I use?
Use a reasonable long-term planning assumption based on your investment allocation, time horizon, and risk tolerance.
Investment returns are uncertain, so comparing multiple scenarios can be more informative than relying on one rate.
14. Does the calculator automatically apply IRS 401(k) contribution limits?
No. The calculator does not automatically enforce current IRS contribution limits, catch-up contribution rules, or employer plan restrictions.
You should confirm that your planned contributions comply with applicable requirements.
15. Is the 401(k) Roth vs Traditional Calculator free to use?
Yes. Our online 401(k) Roth vs Traditional Calculator is free to use.
You can compare projected retirement balances, estimate withdrawal taxes, calculate Traditional contribution tax savings, and review inflation-adjusted values without registration.
Conclusion
Choosing between a Roth 401(k) and a Traditional 401(k) is an important retirement planning decision.
Both options provide tax-advantaged retirement savings, but they differ in the timing of taxation.
Traditional 401(k) contributions generally offer immediate income tax benefits, while Roth 401(k) contributions may provide qualified tax-free withdrawals during retirement.
Your current marginal tax rate, expected retirement tax rate, contribution amount, investment performance, employer matching contributions, and retirement timeline can all influence the outcome.
Our free online 401(k) Roth vs Traditional Calculator helps you explore these factors by estimating retirement account growth, withdrawal taxes, after-tax balances, current Traditional contribution tax savings, and inflation-adjusted values.
It also allows you to test different contribution increases and employer matching assumptions.
However, the results are simplified projections rather than personalized financial or tax advice.
In particular, the calculator does not invest Traditional tax savings, automatically enforce contribution limits, or separately track the compounded value of employer matching contributions for tax purposes.
For a comprehensive retirement strategy, consider these limitations alongside your broader financial situation and consult a qualified financial or tax professional when appropriate.
Use the 401(k) Roth vs Traditional Calculator above to compare estimated retirement savings, understand potential tax differences, and explore how your financial assumptions may affect your future retirement income.