409A Valuations and Incentive Stock Options (ISOs) vs. Nonqualified Stock Options (NSOs)

Learn how 409A valuations support stock option grants for private companies by establishing fair market value at the grant date. This guide explains the differences between ISOs and NSOs, how Sections 409A, 422, and 83 interact, common compliance risks, valuation safe harbors, and why an accurate 409A valuation is essential for preserving favorable tax treatment.