How the ESPP Tax Calculator Works
Korea's employee stock ownership plan lets workers buy company shares at a discount and later pay a reduced income tax rate on that discount based on how long they hold the shares. The closest U.S. equivalent is a qualified Employee Stock Purchase Plan (ESPP), which similarly lets employees buy shares at up to a 15% discount off the fair market value -- but the U.S. tax treatment hinges on whether your sale counts as a "qualifying" or "disqualifying" disposition rather than a sliding holding-period discount.
The discount you received (the "bargain element": fair market value at purchase minus what you paid) is always taxed as ordinary income. What changes is the tax on any additional gain above that: if you meet the qualifying holding period (at least 1 year from purchase and 2 years from the offer date), that extra gain is taxed at the lower long-term capital gains rate. If you sell earlier (a disqualifying disposition), that gain is instead taxed at your ordinary income rate.
This calculator lets you enter your purchase price, the fair market value at purchase, shares, sale price, and whether your sale is qualifying, then estimates the ordinary income, capital gain, and total tax. Actual ESPP rules -- including the $25,000/year purchase limit and lookback provisions -- can affect the numbers, so check your plan documents or a tax advisor for precise figures.
Frequently Asked Questions
A qualifying disposition means you held the shares at least 1 year after purchase and 2 years after the offer date -- the discount is taxed as ordinary income and the rest as long-term capital gains. A disqualifying disposition taxes the discount as ordinary income too, but the remaining gain is taxed at your ordinary rate instead of the lower capital gains rate.
Yes. The difference between the fair market value at purchase and what you paid, called the bargain element, is taxed as ordinary income regardless of when you sell -- only the treatment of gains above that changes.