In December and January of each year, startups often start to wonder what they should be doing with all of those employees and contractors to which they’ve given incentive stock options and non-qualified stock options (“ISO” and “NQSO”). There is a very important deadline for companies that have granted ISO’s or NQSO’s. The ISO and NQSO forms are due by January 31. Businesses only have a short window after the end of the previous year to make sure that you have the form for your employees and your contractors who have received this type of stock incentive.Then, you need to know the difference between the two types of stock options—incentive stock options and non-qualified stock options. (If you want to go deep, read our stock options 101 for founders here.)Incentive stock options (ISO’s): Your startup can only give ISO’s to employees! And if you have, you’ll need to fill out Form 3921. Your CPA can complete the form for you, or if you have a special subscription on Carta or Capshare, they can assist as well.Non-qualified stock options (NQSO’s): NQSO’s can be given to either employees or contractors. For employees, you will want to adjust box 12 on their W-2 Form, and provide it to them by January 31st. You’ll. need to work with your payroll provider, perhaps Gusto or TriNet, to make sure the W-2 adjustment is done. For contractors, you’ll need to file Form 1099 Miscellaneous.That is tax reporting for ISO’s and NQSO’s! Again, for ISO’s must have a Form 3921 filed, and for NQSO’s you want to adjust employee’s W-2 for and file Form 1099 Miscellaneous for contractors.