ISOs: Taxes

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Articles   (Jump to FAQs)

Stock Option Fundamentals (Part 3): Income Taxes And Withholding 

Marilyn Renninger
UPDATED! Here's some advice for financial fitness: take stock of taxes before you exercise! When and how you exercise your stock options can have a major impact on how much tax and which taxes you'll pay.

Treasury And IRS Finalize Regulations For Incentive Stock Options

IRS and US Treasury Department
8/04
These update and clarify the existing ISO regulations to follow most of those proposed in June 2003, including interpretations introduced back in 1984. The new regulations are of greater concern to corporations than to individual optionholders and advisors (e.g., no changes to the basic tax structure or AMT treatment for ISOs). For option planning, the rules clarify certain advanced topics, such as the wash sale rule, stock swaps, and transfers to trusts and in divorce, and they confirm current interpretations and practices.

Proposed Regulations For ISOs

IRS and US Treasury Department
6/6/03
The proposed regulations of June 6, 2003, which are very similar to the final rules, contain a more detailed background and discussion of the provisions than the final version does. The similar section in the final regulations (August 2, 2004) focuses on revisions and clarifications of the proposed rules.

Taxes On Incentive Stock Options

Bill Bischoff
SmartMoney
The AMT and other tax rules affecting ISOs.

Taxable And Nontaxable Income:
IRS Publication 525

Internal Revenue Service
This IRS publication explains the tax treatment of many kinds of income, including that from NQSOs and ISOs. (To view this you need the Adobe Acrobat Reader, which you can obtain free here.)

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FAQs   (Jump to articles)

What are the tax consequences of exercising an ISO? 

The taxation of incentive stock options (ISOs) is complex. The tax impact depends on when you sell or transfer the stock received at exercise. If you make what is called a disqualifying disposition (e.g., an early sale or a gift) of ISO shares, ordinary compensation income and any capital gains/losses will be determined by your...

What is "capital gain"? Have recent tax laws changed the rates? 

"Capital gain" is income that arises from the sale of a capital asset. Gain from the sale of securities held for investment...

When does my holding period for capital gains begin? At exercise or vesting? 

The holding period to determine whether a capital gain is long-term or short-term starts on the...

What are the ISO withholding rules? 

Unlike with NQSOs, there is no federal income tax withholding at...

Did Congress or the IRS change the withholding rules that apply to ISOs and ESPPs? 

Fortunately, the American Jobs Creation Act of 2004 specifically...

W-2 diagram! What will my W-2 show after I exercise incentive stock options? 

For an ISO exercise in which you hold the stock, nothing is...

How am I taxed if I make a disqualifying disposition (e.g., sale) of ISO shares in the year I exercised the option? 

While you lose the opportunity to have the lower capital-gains tax apply to the difference between the exercise and sale price, the alternative minimum tax (AMT) no longer...

How am I taxed on my gain from a sale of stock that I acquired in an ISO exercise? 

First: Remember that the sale of ISO stock will raise AMT implications (alternative minimum tax). Second: The matter depends on how long you hold the stock...

What happens if I have a capital gain from one sale of company stock and a capital loss from another sale of company stock or another security? 

The treatment for tax-loss harvesting is similar to that of owning and selling any two stocks. The income-tax reporting for multiple transactions is...

What tax treatment applies after ISOs are converted to NQSOs? 

ISOs must have certain characteristics, and the grant must follow certain rules in the tax code. Otherwise, the ISOs will be taxed like...

I hear that when I sell my ISO stock at exercise or within one year I'm taxed as if I had NQSOs. Does this mean that on the spread at exercise (or when I sell the stock) there is withholding and Social Security and Medicare tax? 

No. What this means is that you will not have the favorable tax treatment that you get with ISOs when you hold the stock one year from exercise and two years from grant...

If I plan to sell my ISO stock before the end of the required holding periods (i.e., a disqualifying disposition), is there any tax advantage to receiving ISOs instead of NQSOs? 

Yes. Unlike with NQSOs, federal tax laws currently provide that Social Security taxes are not owed upon exercise of ISOs, regardless of whether you soon sell the stock...

My company allows me to exercise my ISOs more than 90 days after I leave my job. What is the tax treatment at exercise? 

The Internal Revenue Code is very clear on the requirements of favorable tax treatment for ISOs. Among other conditions...

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