What is Capital Gains Tax?

Capital gains tax is the levy the government charges on the profit you make from selling an asset. In the world of business and startups, an asset is usually something like stocks, bonds, or real estate.

It is vital to understand that this tax applies to the profit, not the total amount of money you receive from the sale. The profit is calculated by taking the selling price and subtracting your original purchase price. This original price is often referred to in accounting terms as the basis.

For example, if you buy a share of stock for ten dollars and sell it for one hundred dollars, your capital gain is ninety dollars. You are taxed on that ninety dollar difference.

If you sell an asset for less than you bought it for, you have a capital loss. This distinction is important because losses can sometimes be used to offset gains on your tax return.

The most critical aspect of capital gains tax for a founder is time. The tax code treats assets differently depending on how long you have held them before selling.

There are two main categories:

• Short-term capital gains: This applies to assets held for one year or less.
• Long-term capital gains: This applies to assets held for more than one year.

The difference in taxation between these two is significant. Short-term gains are generally taxed as ordinary income. This means the profit is added to your salary and other earnings, potentially pushing you into a high tax bracket where you could pay up to 37% depending on current laws.

Long-term capital gains are taxed at lower thresholds. Depending on your income level, these rates are typically 0%, 15%, or 20%. This favorable treatment is designed to encourage long-term investment rather than quick flipping of assets.

For a startup founder, capital gains tax is not just an abstract accounting concept. It is the primary mechanism through which you will eventually be taxed on your life’s work.

When you found a company, you acquire equity. That equity has a very low basis, often close to zero. If you build the company successfully over five or ten years and then sell it, the difference between your initial nearly zero basis and the multi-million dollar sale price is a capital gain.

Because founders usually hold their equity for many years, the proceeds from an exit are typically subject to long-term capital gains rates rather than income tax rates. This can result in keeping a significantly larger portion of the wealth you generated.

There is a specific scenario founders should investigate called Qualified Small Business Stock, or QSBS. Under Section 1202 of the Internal Revenue Code, certain founders may be eligible to exclude up to 100% of their capital gains from federal taxes if they hold the stock for at least five years.

This is a complex area of tax law with specific requirements regarding the size of the company and the type of business it conducts. However, it represents one of the few instances where the government offers a massive incentive for building a small business from the ground up.

Founders need to ask themselves if their current corporate structure allows for this or if they are inadvertently disqualifying themselves from future tax benefits.

Capital gains tax dictates how much of your exit you actually get to keep. It influences when you should sell shares and how you should structure your compensation.

While the concept is simple, the application involves layers of strategy. Are you tracking your basis correctly? Do you know when your holding period clock started? These are the questions that ensure your hard work results in tangible value.