For a lot of tech professionals, selling stock feels like losing money. You log into your brokerage account. Your company stock is up. Your RSUs have doubled over the past few years. Maybe you exercised options early and the gain is substantial.
You think about selling. Then you calculate the capital gains tax and immediately close the tab.
“I’ll hold. No reason to give the IRS money right now.”
That instinct is completely understandable. But here is the uncomfortable truth: Deferring capital gains can quietly increase your financial risk in very real ways. The kind of risk that shows up when a stock drops 40%, and your net worth drops with it.
We’ll talk you through how that happens.
What You Think Is Happening When You Defer Gains
When you hold instead of selling, you are telling yourself three things:
- I avoid paying capital gains tax today.
- My money keeps compounding.
- I will sell later under better conditions.
Those are valid points.
Under current U.S. law, the capital gains tax is triggered when you sell. If you hold appreciated shares for more than one year, you typically qualify for long-term capital gains rates, which are lower than ordinary income tax rates.
So yes, deferral can reduce tax drag. But here is what is happening at the same time.
Risk #1: Your Net Worth Becomes Tied To One Company
This is the biggest risk, and it is extremely common in tech.
Let’s say:
- Your salary comes from your employer.
- Your annual bonus is tied to company performance.
- Your unvested RSUs depend on staying employed.
- 40% of your net worth is in company stock because you did not want to sell and trigger gains.
If your company has a rough year, all of those things are affected at once. Your income risk and your investment risk are stacked on top of each other. This is called concentration risk, but you do not need the label to understand the danger.
If the stock falls 50%, and 40% of your net worth is in that stock, your overall net worth drops 20% from that position alone.
That loss will almost certainly be larger than the capital gains tax you were trying to avoid.
Deferring gains often allows concentration to grow silently. The stock rises. You do nothing. It becomes a larger and larger share of your wealth.
You are not actively choosing to take more risk. It just happens.
Risk #2: You Confuse Tax Savings With Wealth Creation
Let’s make this very concrete.
Assume you have a $1 million position with a $400,000 unrealized gain. If you sell, you might owe roughly 15% – 20% in federal long term capital gains tax, plus state tax depending on where you live.
You hesitate because the tax bill might be $80,000 or more.
Now imagine the stock drops 30% next year.
Your $1 million position becomes $700,000.
You just lost $300,000 in value to avoid an $80,000 tax bill.
Taxes are certain and measurable. But market risk is larger and more unpredictable. This does not mean you should always sell. But it does mean the tradeoff needs to be explicit.
You are not choosing between paying tax and paying nothing. You are choosing between paying tax and staying exposed to market risk.
Risk #3: RSUs Make The Problem Worse
With RSUs, you already paid ordinary income tax when they vested.
That tax is based on the value at vesting. Any additional appreciation after vesting becomes capital gain.
Here is what often happens:
- RSUs vest
- You hold because you want long-term capital gains treatment
- The stock performs well
- Your exposure grows
You are now holding shares in the same company that pays your salary, purely to reduce tax on incremental gains.
If that stock declines sharply, you still paid ordinary income tax at the higher vesting value. Now you are sitting on losses.
In other words, holding RSUs after vesting increases exposure without eliminating prior tax cost.
For many tech professionals, automatically selling RSUs at vesting and reinvesting into a diversified portfolio reduces this risk significantly.
Risk #4: ISO Holding Periods Can Lock You Into Exposure
Incentive Stock Options add another layer.
To qualify for favorable long-term capital gains treatment, you must hold:
- At least two years from the grant
- At least one year from exercise
That creates an incentive to hold the shares.
But exercising ISOs can also trigger Alternative Minimum Tax based on the spread at exercise. You may owe tax on paper gains, even if you have not sold.
Now imagine this scenario:
- You exercise and hold to qualify for long-term capital gains
- You incur AMT exposure
- The stock declines before you sell
You took on tax complexity and market risk simultaneously.
ISO planning requires modeling. Blindly holding for tax treatment can be dangerous.
Risk #5: You Delay Diversification Indefinitely
One of the most common patterns we see is this:
“I’ll sell after earnings.”
“I’ll sell once the stock hits X.”
“I’ll sell next tax year.”
Then something changes. The market corrects. The stock stagnates. A new grant vests. Life gets busy.Deferral turns into years of inaction.
Meanwhile, your portfolio becomes less diversified and more fragile. If 50% of your wealth depends on one stock, your financial independence timeline depends on one stock.
That is a fragile position to be in.
What A More Intentional Strategy Looks Like
This is not about selling everything tomorrow. It is about replacing passive deferral with active planning.
Start with a simple question: if this stock dropped 40% next year, would your long term goals still be intact?
If the answer is no, then your concentration is too high.
Here are some practical approaches you can adopt:
- Set a concentration cap. Decide that no single stock should exceed a certain percentage of your net worth. If it does, sell down to target.
- Sell RSUs at vest by default. Treat them as cash compensation, unless you have a specific reason to hold.
- Use staged sales. Sell portions over multiple years to spread the tax impact rather than triggering one large event.
- Coordinate gains with tax loss harvesting elsewhere in your portfolio to reduce net tax impact.
- Run real projections before holding ISOs for long-term treatment. Include AMT, downside risk, and liquidity constraints.
The goal is not zero tax, but controlled risk.
When Deferring Gains Actually Makes Sense
There are cases where deferral is reasonable.
- If the position is a small percentage of your net worth, the risk may be manageable.
- If you are days away from qualifying for long-term treatment, waiting may be logical.
- If selling would not meaningfully reduce concentration, the benefit may be limited.
But those are specific cases. They are not default rules.
Deferring gains should be a deliberate choice, not a reflex reaction to seeing a tax estimate.
Work With Financial Advisors That Understand Equity Compensation
The real question is not “How do I avoid capital gains tax?”
It is “How much risk am I taking to avoid this tax?”
For many tech professionals, the bigger mistake is not paying capital gains tax. It is allowing concentration to build for years without a structured exit plan.
When you can see the numbers clearly, including tax impact, downside risk, and long-term projections, the tradeoffs become much easier to evaluate.
KB Financial Advisors works specifically with tech professionals and founders navigating concentrated equity, RSUs, stock options, and liquidity planning.
If you are holding a large appreciated position and are unsure whether deferring gains is strengthening or weakening your overall plan, we invite you to schedule a conversation.
A clear strategy can help you reduce risk intentionally instead of reacting after the market moves.
