401(k) Traditional vs Roth Calculator
Choosing between a Traditional 401(k) and a Roth 401(k) is one of the most important decisions when planning for retirement. Both retirement savings options provide tax advantages, but they differ in how contributions are taxed and how much money you may receive after retirement.
A Traditional 401(k) generally allows you to contribute money before federal income taxes, potentially reducing your current tax bill. However, withdrawals during retirement are usually subject to income tax.
A Roth 401(k) works differently. Contributions are made using after-tax income, but qualified retirement withdrawals, including investment earnings, are generally tax-free.
These differences can significantly affect your retirement savings, especially when considering your current income, future tax rates, investment returns, and the number of years remaining until retirement.
Our 401(k) Traditional vs Roth Calculator is a free online retirement planning tool that helps you compare the estimated future value of both retirement savings options.
The calculator considers your current age, retirement age, annual salary, contribution percentage, employer matching contributions, existing retirement balance, investment growth rate, and tax assumptions.
It also provides two contribution comparison methods: using the same contribution amount or comparing contributions using the calculator’s adjusted Roth funding method.
After entering your information, you can calculate projected retirement balances, estimated withdrawal taxes, employer matching growth, and after-tax retirement values.
Whether you are beginning your career, approaching retirement, or reviewing your workplace retirement plan, this calculator can help you explore how different contribution and tax assumptions may affect your future savings.
What Is a 401(k) Traditional vs Roth Calculator?
A 401(k) Traditional vs Roth Calculator is an online financial planning tool that estimates and compares the retirement savings generated by Traditional and Roth 401(k) contributions.
It projects how contributions may grow over time and estimates the amount remaining after applicable retirement taxes.
The calculator evaluates two retirement savings approaches.
Traditional 401(k): Employee contributions generally reduce current federal taxable income. Investment earnings grow tax-deferred, and withdrawals are generally taxable.
Roth 401(k): Employee contributions are made after taxes. Investment earnings can accumulate tax-free, and qualified distributions are generally tax-free.
The tool also considers employer matching contributions, which can increase retirement savings.
For example, suppose you earn $80,000 annually and contribute 10% of your salary to a 401(k).
Your annual employee contribution would be:
$80,000 × 10% = $8,000
If your employer provides a matching contribution, additional money may be deposited into your retirement account.
Over several decades, these contributions and their investment earnings can produce a substantial retirement balance.
The calculator estimates this growth and compares the after-tax outcomes of the two contribution types.
How to Use the 401(k) Traditional vs Roth Calculator
Our online calculator allows you to compare retirement savings using your financial information.
Follow these steps to calculate your estimated results.
Step 1: Enter Your Current Age
Enter your current age.
For example:
Current Age = 30
The calculator accepts ages from 18 to 100.
Your current age helps determine how many years remain until your planned retirement.
Step 2: Enter Your Retirement Age
Enter the age at which you expect to retire.
For example:
Retirement Age = 65
The calculator uses your current and retirement ages to calculate the investment period.
Years Until Retirement = Retirement Age − Current Age
For example:
65 − 30 = 35 years
Step 3: Enter Your Annual Salary
Provide your annual salary in US dollars.
For example:
Annual Salary = $80,000
The calculator uses this amount to determine your annual retirement contribution and employer matching amount.
Step 4: Enter Your Annual 401(k) Contribution Percentage
Enter the percentage of your salary that you plan to contribute.
For example:
Contribution Percentage = 10%
If your annual salary is $80,000:
Annual Contribution = $80,000 × 10%
Annual Contribution = $8,000
The calculator uses this percentage to determine your annual employee contribution.
Step 5: Enter Your Employer Match Percentage
Enter the percentage of your contribution that your employer matches.
For example:
Employer Match = 50%
If you contribute $8,000 annually:
Employer Match = $8,000 × 50%
Employer Match = $4,000
The calculator applies this match percentage to your full employee contribution, subject to the separate employer match limit.
Actual employer matching formulas may work differently.
Step 6: Enter the Employer Match Limit
Enter the maximum employer match as a percentage of your salary.
For example:
Employer Match Limit = 6%
With an $80,000 salary:
Maximum Match = $80,000 × 6%
Maximum Match = $4,800
If your calculated employer match is $4,000, it remains below this limit.
Step 7: Enter Your Current 401(k) Balance
Enter the amount already saved in your retirement account.
For example:
Current 401(k) Balance = $25,000
The calculator includes this balance in both retirement projections.
Important: The calculator treats your current balance as Traditional money in the Traditional scenario and Roth employee money in the Roth scenario. It does not ask how your existing savings are actually divided between pre-tax and Roth accounts.
Step 8: Enter the Expected Annual Investment Return
Enter your estimated annual investment growth rate.
For example:
Expected Annual Return = 7%
The calculator uses this percentage to estimate compound investment growth.
Actual investment returns are not guaranteed.
Step 9: Enter Your Current Marginal Tax Rate
Provide your current marginal income tax rate.
For example:
Current Marginal Tax Rate = 22%
This rate helps estimate the upfront tax cost associated with Roth contributions.
Step 10: Enter Your Expected Retirement Tax Rate
Enter the tax rate you expect to apply to Traditional retirement withdrawals.
For example:
Retirement Tax Rate = 15%
The calculator uses this rate to estimate taxes on Traditional retirement savings.
Step 11: Choose the Roth Contribution Funding Method
The calculator provides two options:
Same Contribution Amount from Salary: Uses the same annual employee contribution amount for Traditional and Roth accounts.
Same After-Tax Cost as Traditional: Applies an adjusted Roth contribution formula based on the current tax rate.
The second option increases the modeled Roth contribution when the current tax rate is positive.
However, as explained later, this formula does not represent a conventional equal-take-home-pay comparison.
Step 12: Click Calculate
After entering your information, click Calculate.
The calculator displays the projected Traditional and Roth retirement values.
You can review the estimated tax costs, employer match, and projected advantage.
Click Reset to restore the default values and begin another comparison.
Traditional 401(k) vs Roth 401(k): Key Differences
Traditional and Roth 401(k) contributions share several characteristics.
Both are available through eligible employer-sponsored retirement plans.
Both can provide tax-advantaged investment growth.
Both may qualify for employer matching contributions.
However, their income tax treatment differs.
Traditional 401(k)
Traditional employee contributions are generally made before federal income taxes.
This means eligible contributions can reduce your current federal taxable income.
For example, suppose:
Annual Salary = $80,000
Traditional Contribution = $8,000
Ignoring other adjustments, your current federal taxable compensation may be reduced by $8,000.
However, Traditional withdrawals are generally taxable during retirement.
Roth 401(k)
Roth employee contributions are made after income taxes.
They generally do not reduce your current federal taxable income.
However, qualified Roth distributions can be tax-free.
This includes qualifying investment earnings.
Comparison Table
| Feature | Traditional 401(k) | Roth 401(k) |
|---|---|---|
| Contribution tax treatment | Generally pre-tax | After-tax |
| Current income tax reduction | Generally yes | No |
| Investment growth | Tax-deferred | Potentially tax-free |
| Qualified retirement withdrawals | Generally taxable | Generally tax-free |
| Employer match | Depends on plan provisions | Depends on plan provisions |
| Current take-home pay | Generally higher for equal deposits | Generally lower for equal deposits |
| Future tax exposure | Generally applies to withdrawals | Qualified Roth withdrawals generally tax-free |
The better option depends on your financial circumstances and assumptions about future taxation.
Traditional vs Roth 401(k) Calculation Formulas
Our calculator uses several formulas to estimate retirement savings.
Understanding these formulas helps explain how the results are calculated.
1. Years Until Retirement
Years = Retirement Age − Current Age
For example:
Current Age = 30
Retirement Age = 65
Years = 65 − 30
Years = 35
The calculator uses the whole-number portion of this difference.
2. Annual Employee Contribution
Employee Contribution = Annual Salary × Contribution Percentage / 100
For example:
Salary = $80,000
Contribution Rate = 10%
Employee Contribution = $80,000 × 0.10
Employee Contribution = $8,000
3. Employer Match Calculation
The calculator uses:
Employer Match = Minimum of:
Employee Contribution × Employer Match Rate
OR
Annual Salary × Employer Match Limit
For example:
Employee Contribution = $8,000
Employer Match Rate = 50%
Maximum Match = 6% of $80,000
Calculated Match = $8,000 × 50% = $4,000
Maximum Match = $80,000 × 6% = $4,800
Therefore:
Employer Match = $4,000
This is the calculator’s simplified matching formula.
Some employer plans instead match contributions only on a specified portion of salary. Always check your plan’s actual matching provisions.
4. Retirement Investment Growth Formula
The calculator assumes annual contributions occur at the end of each year.
Its annual calculation is:
Ending Balance = Beginning Balance × (1 + r) + Annual Contribution
Where:
r = Annual investment return expressed as a decimal
For a constant annual contribution, the projected future value can also be written as:
FV = PV(1 + r)^n + PMT × [((1 + r)^n − 1) / r]
Where:
FV = Future retirement balance
PV = Current account balance
PMT = Annual contribution
r = Annual investment return
n = Years until retirement
If the annual return is zero, the contribution growth term becomes PMT × n.
5. Traditional Withdrawal Tax Formula
Traditional Withdrawal Tax = Traditional Balance × Retirement Tax Rate
6. Traditional After-Tax Value
Traditional Net Value = Traditional Balance − Estimated Withdrawal Tax
7. Roth After-Tax Value
The calculator models Roth employee savings as tax-free at qualified withdrawal.
It separately tracks employer matching contributions as Traditional/pre-tax money.
The formula is:
Roth Net Value = Roth Employee Balance + Employer Match Balance × (1 − Retirement Tax Rate)
8. Estimated Retirement Advantage
Estimated Advantage = Roth Net Value − Traditional Net Value
A positive result favors Roth under the calculator’s assumptions.
A negative result favors Traditional.
Traditional vs Roth 401(k) Calculation Example
Suppose you enter the following information:
Current Age = 30
Retirement Age = 65
Annual Salary = $80,000
Annual Contribution = 10%
Employer Match = 50%
Employer Match Limit = 6%
Current 401(k) Balance = $25,000
Annual Investment Return = 7%
Current Marginal Tax Rate = 22%
Expected Retirement Tax Rate = 15%
Funding Method = Same Contribution Amount
Step 1: Calculate Years Until Retirement
Years = 65 − 30
Years = 35
Step 2: Calculate Annual Employee Contribution
Employee Contribution = $80,000 × 10%
Employee Contribution = $8,000
Step 3: Calculate Employer Match
Employer Match = $8,000 × 50%
Employer Match = $4,000
Maximum Match = $80,000 × 6%
Maximum Match = $4,800
Since $4,000 is less than $4,800:
Annual Employer Match = $4,000
Step 4: Calculate Traditional Annual Contributions
Traditional Employee Contribution = $8,000
Employer Match = $4,000
Total Annual Contribution:
$8,000 + $4,000
Total = $12,000
Step 5: Calculate Projected Traditional Balance
The calculator grows the initial $25,000 balance for 35 years at 7%.
It also adds $12,000 at the end of each year.
Using the future value formula:
FV = 25,000(1.07)^35 + 12,000 × [((1.07)^35 − 1) / 0.07]
The projected balance is approximately:
$1.99 million
Step 6: Calculate Traditional Withdrawal Taxes
Assumed Retirement Tax Rate = 15%
Estimated Taxes:
$1.99 million × 15%
Approximately:
$298,000
Step 7: Calculate Traditional After-Tax Value
Traditional Net Value = Projected Balance × 85%
The estimated after-tax value is approximately:
$1.69 million
Step 8: Calculate Roth Retirement Value
The Roth scenario includes:
- The initial $25,000 balance
- Annual Roth employee contributions of $8,000
- Annual employer contributions of $4,000
The calculator tracks the employer matching balance separately and applies the retirement tax rate to that portion.
Because the employee Roth balance is assumed to qualify for tax-free withdrawals, the estimated Roth after-tax value is higher than the Traditional after-tax value in this equal-deposit scenario.
Important: This example compares equal nominal employee contributions, not equal current after-tax cash-flow costs. It also assumes the entire starting balance receives Roth treatment in the Roth scenario.
How to Calculate Employer Matching Contributions
Employer matching contributions can make a significant difference in retirement savings.
Suppose your employer offers a 50% match on eligible contributions, subject to a maximum of 6% of salary under the calculator’s matching method.
Your salary is:
$100,000
Your employee contribution rate is:
10%
Annual Employee Contribution:
$100,000 × 10% = $10,000
Employer Match Before Limit:
$10,000 × 50% = $5,000
Maximum Employer Match:
$100,000 × 6% = $6,000
Since $5,000 is below the maximum:
Employer Match = $5,000
Your combined annual retirement contribution becomes:
$10,000 + $5,000
Total = $15,000
Employer contributions can substantially increase retirement savings over time.
However, actual employer matching formulas and vesting requirements vary by plan.
How Compound Interest Affects 401(k) Retirement Savings
Compound growth is one of the most important factors in long-term retirement planning.
It occurs when investment earnings remain invested and may generate additional earnings.
For example, suppose you invest $10,000 and earn an annual return of 7%.
After one year:
$10,000 × 1.07 = $10,700
After two years:
$10,700 × 1.07 = $11,449
After three years:
$11,449 × 1.07 = $12,250.43
The balance grows because each year’s return is calculated on the accumulated value.
When combined with regular contributions, compound growth can produce a substantial retirement balance.
The calculator uses a constant annual return to illustrate this process.
Actual investment returns fluctuate, and losses are possible.
How Current Tax Rates Affect Traditional and Roth 401(k)
Your current marginal tax rate influences the immediate tax cost of retirement contributions.
Traditional 401(k) Tax Savings
Suppose:
Annual Traditional Contribution = $10,000
Current Marginal Tax Rate = 22%
Estimated Current Federal Tax Savings:
$10,000 × 22%
Tax Savings = $2,200
This tax benefit can improve current cash flow.
Roth 401(k) Upfront Tax Cost
A Roth contribution does not provide the same current federal income tax deduction.
Under the calculator’s simple model, the estimated tax cost associated with a Roth contribution is:
Roth Tax Cost = Roth Contribution × Current Tax Rate
For example:
Roth Contribution = $10,000
Current Tax Rate = 22%
Estimated Tax Cost:
$10,000 × 22%
Estimated Tax Cost = $2,200
This calculation is a simplified comparison of tax treatment. Actual payroll withholding and income tax liability depend on your broader financial situation.
Understanding the Two Roth Contribution Funding Methods
One of the distinctive features of this calculator is its ability to compare contributions using two different funding assumptions.
Method 1: Same Contribution Amount from Salary
This method uses the same nominal employee contribution amount in both accounts.
For example:
Traditional Contribution = $8,000
Roth Contribution = $8,000
The deposits are equal.
However, the Roth contribution generally requires more current after-tax income because it does not reduce current taxable income.
The calculator’s projected retirement values do not separately invest the tax savings available from Traditional contributions.
This means the comparison favors Roth account balances when all other inputs are equal and the assumed retirement tax rate is positive.
Method 2: Same After-Tax Cost as Traditional
The calculator’s second option increases the modeled Roth contribution using:
Adjusted Roth Contribution = Traditional Contribution / (1 − Current Tax Rate)
For example:
Traditional Contribution = $8,000
Current Tax Rate = 20%
Adjusted Roth Contribution:
$8,000 / (1 − 0.20)
$8,000 / 0.80
Adjusted Roth Contribution = $10,000
The calculator then estimates the Roth tax cost using:
$10,000 × 20% = $2,000
However, this method requires an important clarification.
The formula does not produce a conventional equal-after-tax-cost comparison.
Under a simplified flat marginal tax rate, a $10,000 Roth contribution generally requires more current after-tax resources than an $8,000 Traditional contribution.
For an equal reduction in take-home pay, the appropriate relationship is ordinarily:
Roth Contribution = Traditional Contribution × (1 − Current Tax Rate)
Using the same example:
$8,000 × 0.80 = $6,400
Therefore, a $6,400 Roth contribution and an $8,000 Traditional contribution can represent approximately equal current take-home-pay costs under the simplified tax assumptions.
The calculator’s second option instead increases the Roth deposit.
This may be useful for exploring a larger Roth contribution scenario, but its label should not be interpreted as an economically equivalent funding comparison.
How to Calculate Traditional 401(k) After-Tax Retirement Value
Traditional retirement savings are generally subject to income tax when withdrawn.
The calculator estimates this using a fixed retirement tax rate.
Example
Projected Traditional Balance = $750,000
Expected Retirement Tax Rate = 20%
Calculate withdrawal taxes.
Tax = $750,000 × 20%
Tax = $150,000
Now calculate the after-tax balance.
After-Tax Value = $750,000 − $150,000
Traditional After-Tax Value = $600,000
This estimate assumes the entire modeled balance is taxable at the entered rate.
Actual withdrawals may be taxed across different brackets over multiple years.
Therefore, the effective tax rate on retirement withdrawals may differ from your current marginal rate.
How to Calculate Roth 401(k) After-Tax Retirement Value
Roth 401(k) employee contributions are made after taxes.
Qualified withdrawals can generally be received without additional federal income tax.
Suppose your projected Roth employee account balance is:
$600,000
If all withdrawals qualify for tax-free treatment:
After-Tax Roth Employee Value = $600,000
However, employer contributions may be held in a separate Traditional account.
Suppose:
Roth Employee Balance = $600,000
Traditional Employer Match Balance = $100,000
Retirement Tax Rate = 20%
Employer Match After-Tax Value:
$100,000 × 80% = $80,000
Combined After-Tax Value:
$600,000 + $80,000
Total Roth Scenario After-Tax Value = $680,000
This method reflects the calculator’s treatment of employer matching contributions as pre-tax retirement money.
When Is a Traditional 401(k) Better Than a Roth 401(k)?
A Traditional 401(k) may be attractive when your current marginal tax rate is higher than the tax rate you expect to pay during retirement.
For example:
Current Tax Rate = 32%
Expected Retirement Tax Rate = 15%
Traditional contributions may provide substantial current tax savings.
If those savings are invested or otherwise used effectively, the Traditional option may produce a favorable financial outcome.
Traditional contributions may also be useful when reducing current taxable income is an important financial objective.
However, future tax rates are uncertain.
The final result depends on contribution amounts, investment growth, withdrawal timing, and other factors.
When Is a Roth 401(k) Better Than a Traditional 401(k)?
A Roth 401(k) may be attractive when you expect your future retirement tax rate to exceed your current tax rate.
For example:
Current Tax Rate = 12%
Expected Retirement Tax Rate = 25%
Paying taxes at the lower current rate may be beneficial if qualified withdrawals later avoid higher taxation.
Roth savings may also provide flexibility when managing taxable retirement income.
However, Roth contributions require after-tax income today.
This can reduce current take-home pay compared with equal nominal Traditional contributions.
Can You Contribute to Both Traditional and Roth 401(k)?
Many employer retirement plans allow employees to divide their contributions between Traditional and Roth accounts.
For example, suppose you contribute $12,000 annually.
You might choose:
Traditional 401(k) = $6,000
Roth 401(k) = $6,000
This approach provides a combination of current tax advantages and potentially tax-free retirement savings.
However, the combined employee contributions remain subject to applicable annual IRS limits.
Our calculator compares the two contribution approaches separately.
It does not directly calculate a mixed Traditional and Roth contribution allocation.
Understanding 401(k) Contribution Limits
The IRS establishes annual contribution limits for 401(k) retirement plans.
These limits apply to eligible employee elective deferrals, including combined Traditional and Roth contributions.
The limits can change each year.
Some eligible participants may also make additional catch-up contributions.
Employer contributions are subject to separate plan and overall contribution restrictions.
Our calculator does not automatically apply annual IRS contribution limits.
For example, entering a salary of $100,000 and a contribution percentage of 50% produces a modeled annual employee contribution of $50,000.
That amount may exceed the applicable employee contribution limit.
Therefore, verify your intended contribution against current IRS rules before relying on the projection.
Common Mistakes When Comparing Traditional and Roth 401(k)
Retirement planning comparisons can become misleading when important assumptions are overlooked.
Ignoring Current Tax Savings
Traditional contributions generally reduce current federal taxable income.
A complete comparison should consider how those tax savings are used.
Comparing Unequal Contribution Costs
Equal Roth and Traditional deposits generally do not have equal effects on current take-home pay.
This distinction can significantly affect the financial comparison.
Assuming Future Tax Rates Are Certain
Retirement tax rates depend on future income, tax legislation, withdrawal strategies, and personal circumstances.
Ignoring Existing Account Tax Treatment
A current 401(k) balance may contain Traditional, Roth, or other contributions.
The calculator does not separately identify the tax status of an existing balance.
Using Unrealistic Investment Returns
Actual markets fluctuate.
A constant annual growth rate is useful for illustration but does not represent guaranteed performance.
Forgetting Contribution Limits
Employee retirement contributions must comply with applicable legal and employer plan requirements.
Ignoring Investment Fees
Investment fees can reduce long-term retirement returns.
The calculator does not separately account for fees.
Misunderstanding Employer Matching Rules
Employers use different matching formulas and vesting schedules.
The calculator uses a simplified match calculation that may not match your actual plan.
Tips for Accurate 401(k) Retirement Planning
To make the calculator more useful, begin with realistic financial assumptions.
Enter your current age and a reasonable expected retirement age.
Use your actual annual salary and a retirement contribution percentage that fits your budget.
Check your employer’s matching formula before entering the match percentage and limit.
When estimating investment returns, consider using several scenarios rather than relying on one assumed rate.
For example, compare results at 5%, 7%, and 9% annual returns.
You can also test different retirement tax rates to understand how taxes affect projected after-tax values.
If you already have retirement savings, remember that your existing balance may include different tax treatments.
For a more precise comparison, separate Traditional and Roth balances should be modeled individually.
Finally, consider contribution limits, investment fees, inflation, Social Security benefits, and other retirement income sources when developing a complete retirement plan.
Benefits of Using Our Online 401(k) Traditional vs Roth Calculator
Our calculator provides several useful retirement planning features.
Traditional and Roth Comparison: Compare estimated after-tax retirement account values.
Age-Based Retirement Projection: Calculate investment years using your current and retirement ages.
Salary-Based Contributions: Determine annual employee contributions as a percentage of salary.
Employer Match Calculation: Include matching contributions with a salary-based cap.
Existing Retirement Balance: Project growth on your current retirement savings.
Investment Growth Estimates: Calculate future balances using compound growth assumptions.
Tax Comparison: Estimate Traditional withdrawal taxes and Roth contribution tax costs.
Two Roth Funding Scenarios: Explore equal nominal deposits or the calculator’s adjusted Roth deposit method.
Employer Match Growth: View the projected employer match balance in the Roth scenario.
Estimated Advantage: See which account produces the higher after-tax value under the entered assumptions.
These features make the calculator helpful for exploring retirement contribution scenarios.
Frequently Asked Questions (FAQs)
1. What is a 401(k) Traditional vs Roth Calculator?
A 401(k) Traditional vs Roth Calculator is an online financial tool that compares projected retirement savings and after-tax values for Traditional and Roth 401(k) contributions.
It considers age, salary, contributions, employer matching, investment returns, and tax rates.
2. What is the main difference between Traditional and Roth 401(k)?
Traditional 401(k) employee contributions generally reduce current federal taxable income, while withdrawals are usually taxable.
Roth 401(k) contributions are made after taxes, but qualified retirement withdrawals are generally tax-free.
3. Is a Traditional 401(k) better than a Roth 401(k)?
A Traditional 401(k) may be beneficial when your current tax rate is higher than your expected retirement tax rate.
However, the best option depends on your complete financial situation and how current tax savings are used.
4. Is a Roth 401(k) better for younger workers?
A Roth 401(k) may be attractive to younger workers who currently have relatively low tax rates.
A longer investment period also provides more time for potentially tax-free investment growth.
However, age alone does not determine which option is better.
5. How do you calculate annual 401(k) contributions?
Multiply your annual salary by your contribution percentage.
Formula:
Annual Contribution = Salary × Contribution Rate / 100
For example:
$80,000 × 10% = $8,000
6. How does employer matching work in this calculator?
The calculator multiplies your annual employee contribution by the employer match percentage.
It then limits the result to the entered maximum percentage of annual salary.
Actual employer matching formulas may differ.
7. Does the calculator include my current 401(k) balance?
Yes. You can enter your existing retirement balance.
The calculator includes that balance in both projections, although it does not separately identify existing Traditional and Roth amounts.
8. How does investment return affect retirement savings?
A higher annual investment return generally increases projected retirement savings.
However, actual investment performance varies, and negative returns are possible.
The calculator assumes a constant annual growth rate.
9. How are Traditional 401(k) withdrawals taxed?
Traditional 401(k) withdrawals are generally subject to ordinary income tax.
The calculator estimates this tax by multiplying the projected Traditional balance by your assumed retirement tax rate.
10. Are Roth 401(k) withdrawals tax-free?
Qualified Roth 401(k) distributions are generally free from federal income tax.
Qualification depends on applicable IRS requirements, including the five-tax-year rule and a qualifying distribution event.
11. What does the same contribution amount option mean?
This option uses the same nominal annual employee contribution in both Traditional and Roth scenarios.
However, equal deposits generally have different effects on current take-home pay because of their different tax treatments.
12. What does the same after-tax cost option mean?
The calculator labels its second method as an equal-after-tax-cost comparison.
However, it calculates the Roth contribution by dividing the Traditional contribution by one minus the current tax rate.
This increases the Roth deposit and does not represent a conventional equal-take-home-pay comparison.
13. Does the calculator include employer match taxes?
Yes. The calculator separately tracks employer matching contributions in the Roth scenario and applies the assumed retirement tax rate to that balance.
It models the employer match as Traditional/pre-tax money.
14. Does the calculator automatically apply IRS contribution limits?
No. The calculator does not automatically enforce annual employee contribution limits, catch-up contribution rules, or other plan restrictions.
You should verify that your entered contribution amount is permitted.
15. Is the 401(k) Traditional vs Roth Calculator free to use?
Yes. Our online 401(k) Traditional vs Roth Calculator is free to use.
You can compare projected retirement balances, estimate taxes, calculate employer matching contributions, and explore different retirement scenarios without registration.
Conclusion
Choosing between a Traditional 401(k) and a Roth 401(k) can significantly influence your retirement tax strategy and future savings.
Traditional contributions generally provide immediate federal income tax benefits, while Roth contributions may offer qualified tax-free withdrawals during retirement.
Your current age, retirement age, salary, contribution percentage, employer matching contributions, investment returns, and expected tax rates all affect your retirement savings projections.
Our free online 401(k) Traditional vs Roth Calculator helps you explore these factors by estimating future retirement balances, Traditional withdrawal taxes, Roth employee savings, employer match growth, and after-tax retirement values.
The calculator also provides different contribution funding scenarios, allowing you to examine how contribution assumptions affect the projected results.
However, the calculator uses simplified financial assumptions and does not automatically account for IRS contribution limits, investment fees, changing tax brackets, inflation, or the separate tax treatment of existing account balances.
Its adjusted Roth funding option also should not be treated as a conventional equal-after-tax-cost comparison.
For a more complete retirement strategy, evaluate these limitations alongside your overall financial goals and consider guidance from a qualified financial or tax professional.
Use the 401(k) Traditional vs Roth Calculator above to compare estimated retirement savings, explore employer matching benefits, evaluate potential tax differences, and better understand how your contribution choices may affect your financial future.