403(b) Withdrawal Calculator

Start by entering the core details of your withdrawal. Input the total Withdrawal Amount you plan to take, your Current Age to determine if early withdrawal penalties apply, and your current 403(b) Balance.

In the Tax Information section, select your Filing Status (Single or Married Filing Jointly) and enter your Other Annual Income — this is your W-2, pension, Social Security, or other income for the year. The calculator uses this to place your 403(b) withdrawal in the correct tax bracket. Then select your State of Residence from the dropdown to automatically apply your state's income tax rate.

If you are under age 59½, you will see a Penalty Exception selector. Choose the applicable exception (Rule of 55, SEPP, disability, or public safety employee) to see how it removes the 10% penalty. Important: Hardship withdrawals do NOT waive the 10% penalty — they are still subject to income tax and the penalty.

For a more detailed analysis, open the advanced settings to enter your Roth 403(b) Balance, Roth Contributions (Cost Basis), and Roth Account Age. The calculator applies the Roth 5-year rule: if you are at least 59½ and your Roth account is at least 5 years old, the entire Roth portion is tax-free. Otherwise, contributions come out tax-free but earnings are taxable.

Withdrawal Amount

This is the gross amount you intend to withdraw from your 403(b) account before any taxes or penalties are taken out. This is the starting number from which all deductions are calculated.

Current Age

Your age is the most important factor in determining if you will face a 10% early withdrawal penalty. The IRS generally applies this penalty to distributions taken before age 59½. Exceptions are available (see Penalty Exception below).

403(b) Balance

Enter your total current balance across all your 403(b) investments (traditional + Roth). The calculator uses this to show the remaining balance after your withdrawal and to determine the pro-rata split between traditional and Roth portions.

Filing Status

Your federal tax filing status determines which set of tax bracket thresholds applies. Single filers have lower bracket thresholds than Married Filing Jointly filers, meaning the same income is taxed at higher rates for single filers.

Other Annual Income

Your income for the year excluding this 403(b) withdrawal — W-2 wages, pension income, Social Security benefits, rental income, etc. This is critical because your 403(b) withdrawal stacks on top of this income, so the calculator can determine which bracket the withdrawal falls into.

State of Residence

Your state determines the state income tax rate applied to the taxable portion of your withdrawal. States like Florida, Texas, Nevada, and Washington have no income tax (0%), while states like California (9.3%) and Oregon (9.9%) have high rates. Find out which states are best for taxes in our guide to the best states to retire for taxes.

Penalty Exception

Available when you are under age 59½. The IRS allows several exceptions to the 10% early withdrawal penalty:

• Rule of 55: If you left your employer in or after the year you turned 55, you can take penalty-free withdrawals from that employer's 403(b). SECURE 2.0 expanded this to age 50 for qualified public safety employees.
• SEPP (72(t)): Substantially equal periodic payments over your life expectancy. Once started, you must continue for 5 years or until age 59½, whichever is later.
• Disability: Total and permanent disability as defined by the IRS (IRC §72(m)(7)).
• Public Safety Employee (Age 50+): Qualified public safety employees who separated from service after reaching age 50.

Hardship withdrawals do NOT qualify as a penalty exception. A 403(b) hardship distribution is still subject to income tax and the 10% early withdrawal penalty.

Roth 403(b) Balance (Advanced)

The total Roth portion of your 403(b) balance, including both contributions and earnings. This is used to determine the pro-rata Roth withdrawal amount.

Roth Contributions / Cost Basis (Advanced)

Your total Roth 403(b) contributions only — not including earnings. This matters for the 5-year rule: if your Roth distribution is not qualified, contributions come out tax-free but earnings are taxable.

Roth Account Age (Advanced)

The number of years since your first Roth 403(b) contribution. Combined with your age, this determines whether the distribution is "qualified" (age 59½ + 5-year rule = entirely tax-free) or not.

This calculator uses 2026 federal tax brackets (per IRS Rev. Proc. 2025-36, including One Big Beautiful Bill amendments) to compute the marginal tax on your withdrawal. The methodology accounts for bracket stacking, the Roth 5-year rule, penalty exceptions, and mandatory withholding.

Step 1: Determine Taxable Amount

The calculator splits your withdrawal pro-rata between traditional and Roth portions based on your account balances. For the Roth portion, it applies the 5-year rule:

• Qualified Roth distribution (age ≥ 59½ AND Roth account ≥ 5 years): Entire Roth withdrawal is tax-free.
• Non-qualified: Contributions come out first, tax-free. Remaining earnings are taxable and penalty-eligible.

The taxable amount is the traditional withdrawal plus any taxable Roth earnings.

Step 2: Calculate Federal Tax Using Brackets

Instead of applying a flat rate, the calculator computes the marginal tax on just the withdrawal:

1. Calculate federal tax on your other income alone.
2. Calculate federal tax on your other income plus the taxable withdrawal.
3. The difference is the federal tax attributable to the withdrawal.

This correctly handles bracket stacking — a $50,000 withdrawal on top of $50,000 other income will span the 12% and 22% brackets for a single filer, not just one flat rate.

Step 3: Apply State Tax

The state income tax rate for your selected state is applied as a flat rate to the taxable amount.

Step 4: Determine Penalty

If you are under 59½ and no penalty exception applies, a 10% penalty is assessed on the taxable amount. Hardship withdrawals do NOT waive this penalty. If a qualifying exception is selected, the penalty is $0.

Step 5: Calculate 20% Mandatory Withholding

Your plan administrator is required to withhold 20% of the taxable amount for federal taxes before sending you the distribution. This withholding is an advance payment — your actual tax may be more or less. The calculator shows both the withholding amount and the estimated balance due (or refund) at filing.

Roth Pro-Rata Split

roth_withdrawal = withdrawal_amount × (roth_balance / total_balance)
traditional_withdrawal = withdrawal_amount - roth_withdrawal

If qualified (age ≥ 59.5 AND roth_account_age ≥ 5):
  roth_tax_free = roth_withdrawal
  roth_earnings = 0

If not qualified:
  contrib_ratio = roth_contributions / roth_balance
  roth_tax_free = roth_withdrawal × contrib_ratio
  roth_earnings = roth_withdrawal - roth_tax_free

taxable_amount = traditional_withdrawal + roth_earnings

Federal Tax (Bracket-Based)

fed_tax_without = calculateFederalTax(other_income, filing_status, age)
fed_tax_with = calculateFederalTax(other_income + taxable_amount, filing_status, age)
federal_tax = fed_tax_with - fed_tax_without

The calculateFederalTax function applies the 2026 standard deduction ($16,100 single / $32,200 MFJ, plus $2,050/$1,650 additional deduction for age 65+) and then applies progressive bracket rates.

State Tax, Penalty & Net

state_tax = taxable_amount × (state_rate / 100)
early_penalty = (age < 59.5 AND no exception) ? taxable_amount × 0.10 : 0
total_deductions = federal_tax + state_tax + early_penalty
net_received = withdrawal_amount - total_deductions

20% Withholding

mandatory_withholding = taxable_amount × 0.20
tax_due_at_filing = federal_tax - mandatory_withholding
(positive = owe more, negative = refund)

Effective Tax Rate

effective_tax_rate = (total_deductions / withdrawal_amount) × 100

Understanding the rules governing 403(b) withdrawals is crucial to avoid unexpected taxes and penalties. For the most part, these rules mirror those for 401(k) plans.

The most significant rule is the age 59½ threshold. If you take a distribution before reaching age 59½, you will generally owe a 10% early withdrawal penalty on top of regular income taxes.

Penalty Exceptions

• Separation from Service (Rule of 55): If you leave your job during or after the calendar year in which you turn 55, you can take penalty-free withdrawals from the 403(b) of that specific employer.
• Public Safety Employee (Age 50+): SECURE 2.0 expanded the Rule of 55 to age 50 for qualified public safety employees.
• Total and Permanent Disability: If you become disabled, you can take penalty-free distributions.
• Substantially Equal Periodic Payments (SEPP): A series of payments over your life expectancy without penalty.
• Medical Expenses: Unreimbursed medical expenses exceeding 7.5% of AGI.
• Qualified Domestic Relations Order (QDRO): Distributions to an alternate payee as part of a divorce.
• Qualified birth or adoption distributions: Up to $5,000 (SECURE 2.0).

Hardship Withdrawals Are NOT Penalty-Free

A 403(b) plan may permit hardship distributions for an "immediate and heavy financial need." However, hardship withdrawals are still subject to income tax and the 10% early withdrawal penalty. This is one of the most common misconceptions about 403(b) plans. This calculator explicitly separates hardship from penalty exceptions to avoid confusion.

Required Minimum Distributions (RMDs)

Once you reach your RMD starting age (73 for those born 1951–1959, or 75 for those born 1960+), you must begin taking Required Minimum Distributions. Use the RMD calculator to estimate your required withdrawal amount.

Taxes are the biggest cost associated with a 403(b) withdrawal. Because contributions are typically made with pre-tax dollars, the IRS treats withdrawals as ordinary income.

Your withdrawal stacks on top of your other income for the year. This calculator shows exactly how that stacking works: it computes the federal tax on your other income alone, then on your other income plus the withdrawal, and the difference is the tax attributable to the withdrawal. This means a large withdrawal can push you into a higher bracket.

For example, a single filer with $50,000 in other income taking a $50,000 403(b) withdrawal will have the withdrawal taxed across the 12% and 22% brackets — not at a flat 22% rate. The comparison table in the results makes this bracket effect visible across different withdrawal amounts.

Roth 403(b) — The 5-Year Rule

If you have a Roth 403(b), contributions are always tax-free on withdrawal. Earnings are only tax-free for qualified distributions — you must be at least 59½ AND your Roth account must be at least 5 years old. If either condition is not met, earnings are taxable and may be subject to the 10% penalty. Learn more about Roth vs. Traditional differences in our comparison guide.

When you take a cash distribution from your 403(b), your plan administrator is required to withhold 20% of the taxable amount for federal taxes. This is not optional — it is mandatory for eligible rollover distributions paid directly to you.

• The withholding is an advance payment, not the final tax.
• If your marginal bracket is above 20%, you will owe additional tax at filing.
• If your effective rate is below 20%, you will receive a refund.
• You can avoid the 20% withholding by doing a direct rollover to another retirement account.

This calculator shows both the withholding amount and the estimated balance due (or refund) so you can plan accordingly.

Before taking a taxable distribution, consider alternatives that may be less costly.

1. 403(b) Loan: Many plans allow you to borrow up to 50% of your vested balance, capped at $50,000. You pay the loan back to yourself with interest, and it is not a taxable event unless you default. The 401(k) loan calculator can model a similar scenario.

2. Other Savings: Consider using an emergency fund, taxable brokerage account (lower capital gains rates), or home equity line of credit before raiding retirement savings.

3. Reduce Expenses: A temporary reduction in discretionary spending can often free up cash without the tax cost of a withdrawal.

• Net Received: The actual cash available to you after all taxes and penalties.
• Federal Tax: The estimated federal income tax, calculated using 2026 brackets based on your filing status and other income. The "bracket" shown is your top marginal rate.
• State Tax: Your state income tax on the taxable withdrawal.
• Early Penalty: The 10% penalty if under 59½ and no exception applies. Shows "exempted" when a penalty exception is active.
• 20% Withholding Card: Shows how much your plan will withhold upfront and whether you'll owe more or get a refund at filing.
• Withdrawal Breakdown (Donut Chart): A visual showing where each dollar goes.
• Comparison Table: Shows how the net amount, taxes, effective rate, and marginal bracket change at different withdrawal amounts. Larger withdrawals push into higher brackets.

1. Wait Until Age 59½: Eliminates the 10% early withdrawal penalty.
2. Use the Rule of 55: If you are 55+ and leaving your employer, you may take penalty-free withdrawals from that employer's 403(b).
3. Take a 403(b) Loan Instead: Avoids taxes and penalties entirely if repaid on schedule.
4. Withdraw Only What You Need: A smaller withdrawal stays in lower brackets. Use the comparison table to see the bracket effect.
5. Time Withdrawals for a Low-Income Year: Lower other income means the withdrawal starts in a lower bracket.
6. Use Roth 403(b) Funds: Qualified Roth distributions are entirely tax-free.
7. Move to a No-Tax State: States like Florida, Texas, Nevada, and Washington have no state income tax. See the best states to retire for taxes.

1. Thinking Hardship Withdrawals Are Penalty-Free. This is the most common misconception. Hardship distributions are fully taxable AND subject to the 10% penalty if you're under 59½.
2. Assuming a Flat Tax Rate. The actual tax depends on bracket stacking with your other income. This calculator handles that correctly.
3. Confusing Withholding with Final Tax. The 20% your plan withholds is an advance payment. Your actual tax may be higher.
4. Forgetting State Taxes. A state with a 5%+ income tax rate adds significantly to your cost.
5. Ignoring the Roth 5-Year Rule. Roth contributions are always tax-free, but earnings are only tax-free for qualified distributions.
6. Not Checking for Penalty Exceptions. The Rule of 55, SEPP, and disability exceptions can save thousands.

Knowledge is power when it comes to your retirement savings. Use the calculator above to model your own scenario and see the real-world impact of a 403(b) withdrawal. Test different amounts, penalty exceptions, and filing statuses to understand the tax implications before you make a final decision.

For more tools to help you plan, explore our full suite of retirement calculators. If you are looking to build a comprehensive plan, start with our guide on retirement planning for beginners or use the retirement income calculator to project your future cash flow.