Enter the gross distribution and the federal tax withholding percentage into the calculator to determine the net distribution.
Net Distribution Formula
The calculator uses one of three formulas depending on the mode you select.
Net from Gross:
Net = Gross * (1 - (Fed% + State%)/100) - Fee
Gross Needed:
Gross = (DesiredNet + Fee) / (1 - (Fed% + State%)/100)
Retirement Withdrawal:
Check = Gross * (1 - (Fed% + State%)/100) - Fee Penalty = Gross * Penalty%/100 NetAfterPenalty = Check - Penalty
- Gross: total amount taken from the account before any reductions
- Net: cash you actually receive
- Fed%: federal income tax withholding rate
- State%: state and local income tax withholding rate
- Fee: flat dollar fee charged by the plan or custodian
- Penalty%: early distribution penalty (typically 10% under age 59½)
The Net from Gross mode answers what you receive when the gross is fixed. The Gross Needed mode reverses the math, telling you how much to request so that your check matches a target net amount. The Retirement mode adds a separate penalty line because the IRS additional tax on early withdrawals is not collected through ordinary withholding, so it reduces what you keep even though it does not reduce the check you receive at the time of distribution.
Common Withholding Rates and Reference Values
Use the table below to choose realistic withholding inputs for retirement distributions.
| Distribution Type | Default Federal Withholding |
|---|---|
| IRA nonperiodic distribution | 10% (can be waived or changed) |
| 401(k) or 403(b) eligible rollover paid to you | 20% mandatory |
| Direct rollover (trustee to trustee) | 0% |
| Supplemental wages or bonus | 22% flat |
| Roth qualified distribution | 0% (not taxable) |
| Situation | Early Withdrawal Penalty |
|---|---|
| Age 59½ or older | 0% |
| Under 59½, no exception applies | 10% |
| SIMPLE IRA, first 2 years of participation | 25% |
| Qualified exception (disability, first home, etc.) | 0% |
Example Problems
Example 1: Net from a $25,000 IRA distribution. You request $25,000 from a traditional IRA with 10% federal withholding, 5% state withholding, and a $25 processing fee. Withholding totals $25,000 × 0.15 = $3,750. After the fee, your net check is $25,000 − $3,750 − $25 = $21,225.
Example 2: Gross needed to net $10,000. You want $10,000 in hand from a 401(k) eligible rollover. Federal withholding is 20%, state is 5%, and there is no fee. Gross = $10,000 / (1 − 0.25) = $13,333.33. The plan withholds $3,333.33 and sends you $10,000.
FAQ
Is withholding the same as tax owed? No. Withholding is a prepayment toward your tax bill. Your actual tax depends on total annual income and is settled when you file.
Why is the early withdrawal penalty shown separately? The 10% additional tax is generally not taken out of the distribution itself. You receive the full check minus withholding, then owe the penalty when you file your return.
Can I avoid the 20% mandatory withholding on a 401(k) distribution? Yes, by doing a direct rollover to an IRA or another qualified plan. The 20% rule only applies when the eligible rollover amount is paid directly to you.
Do these results account for state-specific rules? The calculator uses the rate you enter. Some states have mandatory withholding tied to federal elections, and a few do not tax retirement income at all. Enter 0% for state if your distribution is not subject to state withholding.
