What Is an Unrealized Gain? Definition, Tax Rules, and Examples
Last updated 05/19/2026 by
Ante Mazalin
Edited by
Andrew Latham
Summary:
An unrealized gain is an increase in the value of an asset that an investor holds but has not yet sold, meaning the profit exists on paper but has not been converted to cash.
Understanding unrealized gains matters because they affect portfolio decisions, tax planning, and financial reporting differently depending on context.
- Stocks and ETFs: Share price appreciation creates unrealized gains that are not taxed until the position is sold.
- Real estate: Property value increases accumulate as unrealized gains that can become significant tax events when the property is eventually sold.
- Retirement accounts: Growth inside tax-deferred accounts like 401(k)s and IRAs is unrealized and untaxed until withdrawal.
- Bonds and fixed income: Rising bond prices relative to purchase price create unrealized gains, though these fluctuate inversely with interest rates.
Watching an investment grow in value feels rewarding, but the number on your screen isn’t money in your pocket yet. The gap between what you paid and what an asset is worth today is the unrealized gain, and that distinction carries real consequences for your taxes and your strategy.
Unrealized gain vs. realized gain
The difference is straightforward: a realized gain happens when you sell an asset for more than you paid. An unrealized gain exists as long as you hold the asset and it’s worth more than your cost basis.
The tax consequence depends entirely on which category a gain falls into. According to the IRS, realized capital gains are taxable in the year the sale occurs, while unrealized gains are not taxed until the asset is sold.
| Feature | Unrealized Gain | Realized Gain |
|---|---|---|
| Asset sold? | No | Yes |
| Taxable now? | No | Yes |
| Appears in cash? | No — paper gain only | Yes |
| Can reverse? | Yes — if asset price falls | No — transaction is final |
| Shown on the brokerage statement | Yes, as unrealized P&L | Yes, after the sale is settled |
How unrealized gains are taxed when you sell
When you eventually sell an asset with an unrealized gain, it becomes a realized gain and triggers a tax event. The rate depends on how long you held the asset.
- Short-term capital gains: Assets held one year or less are taxed as ordinary income, at rates up to 37% for high earners.
- Long-term capital gains: Assets held longer than one year are taxed at preferential rates of 0%, 15%, or 20%, depending on your taxable income and filing status.
This distinction is one of the main reasons investors hold appreciated positions rather than selling and rotating. The longer you hold, the better the tax rate when you eventually take the gain.
Pro Tip
If you have both unrealized gains and unrealized losses in your portfolio, you can use a strategy called tax-loss harvesting, selling losing positions to offset realized gains and reduce your tax bill. This is most effective near year-end and works best in taxable brokerage accounts, not tax-deferred retirement accounts.
Unrealized gains in retirement accounts
Inside a traditional 401(k) or IRA, unrealized gains grow without triggering any annual tax. The entire balance, including all accumulated gains, is taxed as ordinary income when you take distributions in retirement.
Inside a Roth IRA, contributions are made with after-tax dollars, and both the unrealized gains and eventual distributions are tax-free, provided you meet the holding requirements. This makes Roth accounts particularly powerful for assets you expect to appreciate significantly over time.
Why unrealized gains matter for investment decisions
A large unrealized gain can actually create a behavioral trap called a “locked-in” effect, in which investors hold a position beyond its ideal exit point because selling triggers a tax bill. Understanding this dynamic helps you make cleaner decisions based on fundamentals rather than tax avoidance.
Unrealized gains also affect your portfolio allocation over time. A stock that has doubled may now represent a much larger share of your portfolio than intended, increasing concentration risk even though you made no active decision to add to it.
Good to know: For most individual investors, unrealized gains on publicly traded securities are not subject to any annual wealth tax in the United States. Proposals for mark-to-market taxation of unrealized gains have been debated in Congress but have not been enacted as of 2026.
How to calculate your unrealized gain
- Find your cost basis: This is the price you paid per share (or unit), including any commissions or fees paid at purchase.
- Find the current market value: Look up the current price of the asset multiplied by the number of shares or units you hold.
- Subtract cost basis from current value: The difference is your unrealized gain. If the result is negative, you have an unrealized loss.
- Adjust for corporate actions if needed: Stock splits, reinvested dividends, or additional purchases change your average cost basis — use your brokerage’s adjusted cost basis figure if available.
Most brokerage platforms automatically track and display your unrealized gains and losses in real time, so manual calculation is rarely necessary. The formula above is most useful when verifying your platform’s numbers or calculating gains on assets held outside a brokerage, like real estate or private equity.
Related reading on investing concepts
- Portfolio — explains how a collection of investments is structured, balanced, and evaluated over time.
- Short selling — covers how investors profit from falling asset prices, and how unrealized losses in a short position work.
- Commodity — breaks down how physical assets like oil, gold, and agricultural products generate unrealized gains through price appreciation.
- Dollar-cost averaging — explains how regular investing affects your average cost basis and ultimately your unrealized gains over time.
Frequently asked questions
Do I pay taxes on unrealized gains every year?
No. In the United States, unrealized gains on most investment assets are not taxed until you sell the asset. The tax is triggered at the point of sale when the gain becomes realized. Certain mark-to-market rules apply to professional traders and some financial instruments, but these don’t affect most individual investors.
What happens to unrealized gains if I die?
When you die, your heirs generally receive a “step-up in basis,” meaning the cost basis of inherited assets is reset to the market value at the date of your death. This effectively eliminates the unrealized gain for tax purposes, so heirs do not owe capital gains tax on appreciation that occurred during your lifetime.
Can unrealized gains become losses?
Yes. An unrealized gain can shrink or reverse entirely if the asset’s price falls before you sell. Until a transaction occurs, the gain is entirely paper-based and subject to market movement.
How do unrealized gains affect net worth?
Unrealized gains increase your net worth on paper because your assets are worth more than you paid for them. However, net worth calculations that include unrealized gains are theoretical — the actual cash available depends on selling the assets and accounting for any taxes owed.
Are unrealized gains reported on a tax return?
No, unrealized gains are not reported on your annual tax return. Only realized gains, which result from an actual sale, are reported. Your brokerage will issue a Form 1099-B in the year you sell, which you use to calculate and report the taxable amount.
Key takeaways
- An unrealized gain is an asset’s increase in value above your purchase price that has not yet been converted to cash through a sale.
- Unrealized gains are not taxed; only realized gains trigger a tax event in the year of the sale.
- Assets held over one year qualify for long-term capital gains rates of 0%, 15%, or 20%, which are significantly lower than ordinary income rates.
- Tax-loss harvesting allows investors to offset realized gains by selling positions with unrealized losses in the same tax year.
- Inherited assets typically receive a step-up in basis, eliminating the inherited unrealized gain for the recipient.
Managing unrealized gains effectively is a core part of long-term investing. If you’re looking for the right account type to hold appreciating assets, compare options through SuperMoney’s financial product reviews to find accounts that fit your tax strategy.
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