TLDR
By splitting your ISO exercise between December and January, you can significantly lower your yearly AMT liability, and potentially wipe it out completely.
Minimize Taxes by Splitting Your ISO Exercise between December and January
Incentive Stock Options (ISOs) are eligible for favored tax treatment which means they are not subject to withholding tax upon exercise like NSOs. However, they are subject to Alternative Minimum Tax (AMT) if the size of your exercise is beyond the exemption limit. If you happen to be at the end of the current tax year and you just eclipse the exemption limit, then consider exercising just enough in December to stay below the limit. While exercising the rest in January of next year to take advantage of a fresh exemption limit. However, 409A updates to the Fair Market Value of your stock are often triggered at the end of a year so waiting until January could result in a higher FMV on your deferred exercise. That could mean triggering some taxes albeit delayed until the following April. If that is a concern, ask company officials about when they plan to do a 409A update since most startups only do them following new rounds of financing.
See this link for more ways to save money on stock options. Feel free to contact the ESO Fund for assistance in funding your stock option exercise while not having to face the financial risk of investing in a startup. For help funding exercise related taxes, check out how ESO Fund can cover your taxes risk-free.
Frequently Asked Questions
How can I reduce my taxes when exercising stock options?
There are tons of ways to reduce stock option taxes, our site currently lays out 17 different ways to do reduce stock option taxes!
What is the Alternative Minimum Tax (AMT)?
How does AMT affect stock option exercises?
Exercising ISOs may trigger AMT, requiring you to pay taxes upfront even if you don’t sell shares.
Does ESO Fund pay for taxes as well as exercise cost?
Yes! ESO Fund considers any option exercise related taxes (AMT or NSO) as part of the exercise cost and includes tax coverage in our funding.