Updated · Built and checked by the PlinzoTools team, formulas tested against published sources
Estimate the 10% penalty plus income tax cost of an early 401(k)/IRA withdrawal, and what you'd actually keep.
Withdrawing from a 401(k) or Traditional IRA before age 59½ generally triggers the IRS's 10% additional tax, on top of ordinary income tax on the withdrawn amount at your own tax rate. This tool calculates both costs and shows what you'd actually keep after both. It doesn't model the various penalty exceptions (certain hardships, first-time home purchase up to a limit, higher education expenses, and others) -- if you believe an exception applies to you, that changes this calculation significantly.
Enter your withdrawal amount and your estimated income tax rate. Your penalty, tax, total cost, and net amount kept appear instantly.
The tool takes two inputs: the amount you withdraw and your estimated income tax rate. It computes 10 percent of the withdrawal as the additional tax, multiplies the amount by your tax rate for the income tax, adds the two for the total cost, and subtracts that from the withdrawal to show what you keep. The rate you type is treated as a flat percentage of the whole withdrawal, so the tool is only as accurate as the rate you supply.
Penalty = withdrawal x 10%. Income tax = withdrawal x your rate. Net kept = withdrawal - penalty - income tax.
Suppose you take out 20,000 and estimate a 24 percent rate. The penalty is 2,000 and the income tax is 4,800, so the total cost is 6,800 and you keep 13,200. In other words, roughly a third of the money is lost. If your rate were 12 percent, tax would be 2,400, the total cost would be 4,400 and you would keep 15,600. Trying a few rates shows how sensitive the outcome is to your bracket.
A plan may withhold a set percentage from an early withdrawal, and that withholding is a prepayment, not necessarily your final tax. The true bill is settled when you file your return, and the 10 percent additional tax is reported there as well. Do not assume the amount withheld matches the actual liability. If the withheld amount is too low you may owe more, and if it is too high you may get a refund.
Because the combined cost can be substantial, consider alternatives first. Some plans allow loans that are repaid to your own account, and there may be hardship options with specific rules. Some exceptions to the 10 percent additional tax exist, such as certain medical costs, disability, or a first-time home purchase up to a limit, each with its own conditions, and the tool does not apply them. There are also opportunity costs: the money leaves an account where it could keep growing tax-deferred, which this calculator does not project. A tax professional or the plan administrator can explain the options for your specific situation.
Yes -- several exceptions exist (certain hardships, disability, qualifying medical expenses, first-time home purchase up to $10,000, higher education expenses, and others), each with specific IRS rules. This tool assumes no exception applies; consult a tax professional if you believe one does.
Only if you include it in the rate you enter. The tool multiplies the single rate you provide.
The withdrawal is added to your other income, which can raise your effective rate, and exceptions or credits may apply. The tool uses one flat rate.
No. Withholding is a prepayment, and the actual liability is determined when you file your return.
No. It assumes the 10 percent additional tax applies in full.
Reference: Social Security Administration