QSBS Savings Calculator
Calculate your potential tax savings from Qualified Small Business Stock (QSBS) exclusion.
If you've held your business as a C-corporation since inception and owned it for at least five years, you may qualify for the Qualified Small Business Stock (QSBS) exclusion, one of the most powerful tax benefits available to entrepreneurs. This provision allows you to exclude up to $10 million (or 10x your basis, whichever is greater) of QSBS gains from federal taxes.
However, QSBS is complex, with strict holding period requirements, 50% gain limitation rules, and specific stock issuance criteria. Not all founders qualify, and qualifying doesn't mean you automatically get the benefit. Understanding QSBS rules and structuring your exit to preserve eligibility can save hundreds of thousands or even millions in taxes.
QSBS Parameters
How QSBS Works
QSBS allows you to exclude gains from the sale of qualified stock issued by a C-corporation. You must have held the stock for at least five years and met specific requirements at issuance. The exclusion is limited to the greater of $10 million or 10x your basis. A $5M gain with $1M basis might allow you to exclude $10M of gain, but you can only exclude the $1M you earned.
QSBS Eligibility Requirements
Your business must be a C-corporation incorporated in the US. At the time you acquired the stock, it must have been newly issued and the corporation must have had less than $50M in assets. More than 50% of the corporation's assets must be used in an active trade or business (not passive investments). Certain businesses like financial services, hospitality, and health care are excluded. Your recent exit timeline and the history of your cap table both matter for qualification.
Common QSBS Pitfalls
Many founders lose QSBS benefits through inadvertent actions. If you receive preferred stock instead of common stock, you might not qualify. If your company raised more than $50M in assets at any point while you held the stock, you could lose benefits. If you sell before the five-year holding period, you get no QSBS benefit at all. Even worse, some founders don't realize they qualify and don't structure their exit to preserve the benefit.
Common Mistakes
Not checking QSBS eligibility before exiting
Many founders exit without consulting a tax advisor about QSBS eligibility. If you might qualify, get professional confirmation before finalizing deal terms. The tax savings can be enormous and worth structuring around.
Holding stock past five years but forgetting the requirement
You must have held the stock for five years from acquisition. If you acquired in 2019, you can't use QSBS until after 2024. Plan your exit timing around this threshold when possible.
Overlooking the asset test
The corporation must have less than $50M in assets at the time you acquired the stock. Many founders don't realize they crossed this threshold and lost qualification. Track your company's balance sheet growth against this limit.