I've never been able to find a clear explanation of this, and given Coinbase's announcement today I thought it was a good time to learn.
So:
I get that if I leave my startup today I have 90 days to exercise my options.
I get that I'll have to pay the agreed 'strike price'
But everything after that is unclear to me.
Would I be paying tax as if I'd made capital gains in the amount of the delta between the strike price and the stock's value today? Would the stock's value today be based on the company's valuation at the most recent round of funding?
If the company goes on to raise more VC funding, would I be liable in future years for the 'capital gains' on this stock?
If the company went on to fail, would I be entitled to tax breaks for loss of stock?
etc.
I'd love to see a clear explanation of all this stuff from someone who's been through it or just knows it. Thanks!
2. If the company is still private, the stock's value is determined by the last 409(A) valuation for Common stock that the company performed, assuming that your options are for Common stock (which is very likely). The company must perform one of these valuations a year and should provide you with that amount upon your request.
3. Exercising the stock starts the clock for long term capital gains treatement. That is, if you sell the stock a year after exercising it, you will pay capital gains tax on the value difference between the sell price and the value at exercise.
Math wise:
* TP = strike price (the price in your option contract at which you buy the shares)
* EV = value of a share at exercise time, as determined by the latest 409A valuation
* SP = sale price of a share when you sell the stock eventually
* #S = the number of shares you have
* IT% = Your income tax rate
* CT% = Your long term capital gains rate
At exercise:
- You pay to exercise the shares: #S * TP
- You owe in taxes: #S * (EV - TP) * IT%
At sale
- You make: #S * (SP - TP)
- You owe in taxes, assuming you waited a year to sell: #S * (SP - EV) * CT%