IPO Restricted Stock Unit (RSU) Tax Calculator

IPO Restricted Stock Unit (RSU) Tax Calculator

Estimate your federal and state taxes, including capital gains, FICA, net investment income (NIIT), and tax withholdings

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This online calculator allows you to estimate both federal and state taxes due to an IPO or vested RSUs and is especially useful as it takes into account capital gains, deductions and existing tax withholdings, showing you the additional taxes due that you may need to prepare for.

The calculator primarily focuses on Restricted Stock Units (RSUs). If you wish to look at the tax effect of Incentive Stock Options (ISOs), please use our Alternative Minimum Tax (AMT) Calculator instead, as the tax rules around ISOs are quite different.

Lastly, this calculator is most useful if you can project all the RSU vesting events and tax withholdings for the calendar year, so that you can get the most accurate tax liability possible.

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Instructions: For this section, select the number of RSU "Vesting Events" that have occurred this year. A "vesting event" is a single date in which a certain amount of your RSUs vest. You may have multiple RSU grants that vest different amounts of stock. All the stocks that vest on the same day is considered part of the same "vesting event" as you receive them at the same time at the same price.

For example, if your RSUs vest at the end of each month, and today is July 10th, you will have had 6 vesting events so far, regardless of how many different grants you have. For each vesting event, input in the number of total shares vested on that day alongside the Fair Market Value (FMV) of the stock price on that day.

For estimating taxes for IPOs: All your vested RSUs will be granted on the day of IPO, so you will have only "1" vesting event. Input all the shares vested and the IPO price in the boxes below.

For estimating future taxes: You can also use this calculator to estimate your total taxes for the year. However, you will need to input your best guess in terms of what the stock price will be at a future vesting event.

Vesting Event #1
Vesting Event #2
Vesting Event #3
Vesting Event #4
Vesting Event #5
Vesting Event #6
Vesting Event #7
Vesting Event #8
Vesting Event #9
Vesting Event #10
Vesting Event #11
Vesting Event #12

Instructions: For this section, input your total income taxes withheld from your employer to estimate how much additional taxes you will owe. Either input year-to-date numbers from your paystubs or a projection of total withholdings for the year.

For RSU Tax Withholding: Select if your employer withholds whole or partial RSUs for tax purposes. If you do not know, they likely withhold whole shares. In addition, input the % withheld (the federal minimum for RSUs is 22% and will be the default used in calculations).

Income Taxes Withheld
RSU Withholding Details

The contents of this page and website are for information purposes only. Any result from our tools, including the IPO Calculator, AMT Calculator and ISO Planner is only an estimation based on the inputs provided. It is not intended to be financial, tax, or investment advice. Please seek a duly licensed professional.

For those calculating 2024 federal taxes, numbers will continue to to be updated as Congress updates the tax code. For those calculating state taxes, please see the disclaimer at the bottom of "State Tax Breakdown".

Overall Tax Results Estimated Tax Owed
Federal Taxes (includes Long Term Cap Gains Tax)
State Taxes (includes Long Term Cap Gains Tax)*
Estimated Total Tax Liability
Subtotal of Income Tax Withheld
RSU Shares Withheld for Taxes
Value of RSU Shares Withheld for Taxes
Subtotal of All Taxes Withheld
Estimated Taxes You Will Owe
Negative number means a refund instead

Federal Tax Breakdown
Income (Wages + Net Short Cap Gain, if any)
Supplemental Income (from RSUs)
Net Long Term Capital Gains, if applicable
Total Exemptions / Above the Line Deductions
Adjusted Gross Income (AGI)
Modified Adjusted Gross Income (MAGI)
Deduction Category
Total Deductions
Taxable Income
Federal Income Taxes Owed
Social Security Earned Income
FICA: Social Security Tax
Medicare Taxable Income
FICA: Medicare Tax
Net Investment Income
Net Investment Income Tax (NIIT)
Long Term Capital Gains Tax
Estimated Total Federal Taxes Owed

State Tax Breakdown
State Taxable Income (includes all relevant capital gains)**
Sum of relevant capital gains, if applicable***
State Income Taxes Owed
State Capital Gains Taxes Owed
Estimated Total State Taxes Owed

*Disclaimer: Due to the fact that state tax laws are created independently by each state on different timetables, the state taxes owed that are calculated here are rough estimates of what you may end up owing, and are not meant to be taken as exact calculations. You can find a list of caveats and assumptions of our methodology below:

  • Our state tax calculations use federal exemptions and deductions, and not individual state ones, due to the fact that many state-level deductions aren't even finalized by end of a calendar year
  • If you are calculating 2024 state taxes, this calculator currently uses previous year numbers as many states have not finalized tax code yet. However, this should serve as a pretty good estimate of future taxes.
  • ** Every state except for CT, HI, MA include long term capital gains (LTCG) as part of their taxable income and it is reflected in this cell.
  • ** AR, ND, NM, SC, WI all allow individuals to apply a percentage deduction based on their LTCG. Your LTCG is reduced by that amount for these calculations and is reflected in this cell.
  • ** VT only considers a gain as a long term capital gain if held over 3 years. That is not factored in these calculation - we use the traditional '1 year' definition for simplicity purposes.
  • *** CT and HI are the only states that tax LTCG and short term capital gains (STCG) together at a flat rate, separate from Income. These are both included in this cell.
  • *** MA combines LTCG with income, but splits out STCG into it's own category. STCG is thus reflected in this cell.