Why capital gains receive preferential tax treatment
The preferential tax rate on long-term capital gains has been a feature of the US tax code — in various forms — since the Revenue Act of 1921. The policy rationale has evolved over the century, but several arguments have consistently supported lower rates on capital gains: they encourage investment by reducing the tax cost of deploying capital into productive assets; they partially compensate for the inflation component of apparent gains (an asset that doubled in value due entirely to inflation has no real economic gain); and they reduce the “lock-in” effect, where high capital gains taxes discourage investors from selling appreciated assets and redeploying capital to more productive uses.
The current framework — with long-term gains taxed at 0%, 15%, or 20% depending on income, compared to ordinary income rates up to 37% — was largely established by the Jobs and Growth Tax Relief Reconciliation Act of 2003 and has been maintained through subsequent tax legislation. The Net Investment Income Tax of 3.8% added in 2013 applies on top of these rates for high-income taxpayers, bringing the top effective federal rate on long-term gains to 23.8%.
What is a capital gain?
A capital gain is the profit realized from selling a capital asset for more than its adjusted cost basis. The tax rate depends on the holding period: short-term gains (assets held one year or less) are taxed as ordinary income; long-term gains (assets held more than one year) are taxed at preferential rates of 0%, 15%, or 20% depending on the taxpayer’s income.
Capital assets include most property held for investment or personal use: stocks, bonds, mutual funds, real estate, collectibles, cryptocurrency, and business interests. Property held primarily for sale to customers (inventory) is not a capital asset. Depreciable business property follows special rules under Section 1231 — it is not technically a capital asset but receives capital gain treatment on net gains while allowing ordinary loss treatment on net losses.
2026 federal capital gains tax rates
| Rate | Single filer taxable income | Joint filer taxable income |
|---|---|---|
| 0% | Up to ~$48,350 | Up to ~$96,700 |
| 15% | ~$48,351 to ~$533,400 | ~$96,701 to ~$600,050 |
| 20% | Above ~$533,400 | Above ~$600,050 |
| +3.8% NIIT | On investment income above $200,000 | On investment income above $250,000 |
Thresholds are adjusted annually for inflation. Short-term capital gains are taxed as ordinary income at rates from 10% to 37%. The maximum combined federal rate on long-term capital gains is 23.8% (20% + 3.8% NIIT). Collectibles gains are capped at 28%. Qualified small business stock (Section 1202) gains may be excluded entirely for eligible C corporation stock held more than five years.
Adjusted cost basis — the foundation of every gain calculation
The capital gain equals the amount realized (sale proceeds minus selling costs) minus the adjusted cost basis. Getting basis right is foundational — an overstated basis understates the gain and the tax; an understated basis overstates them. Basis adjustments arise from numerous events:
- Real property: purchase price plus acquisition costs, plus capital improvements, minus depreciation claimed (for rental and business property)
- Stocks and mutual funds: purchase price plus commissions, adjusted for stock splits, return-of-capital distributions, and reinvested dividends (which add to basis)
- Inherited assets: stepped-up to fair market value at date of death — potentially eliminating decades of embedded gain
- Gifted assets: generally carry over the donor’s basis (carry-over basis)
- Business assets: cost plus improvements minus accumulated depreciation (the result is adjusted basis, which may be well below current value after years of depreciation)
Basis records must be maintained from the date of acquisition through the date of sale — potentially over decades. Reconstructing basis after the fact from incomplete records is one of the most common and costly problems in capital gains tax compliance.
Depreciation recapture: ordinary income hidden in a capital sale
When depreciable business property is sold at a gain, the tax treatment is not entirely at capital gains rates. The IRS requires depreciation previously deducted to be “recaptured” — taxed at ordinary income rates (capped at 25% for real property) — before any remaining gain receives capital treatment. This is one of the most misunderstood aspects of business property sales.
Section 1245 recapture: On personal property (equipment, vehicles, machinery), all depreciation previously deducted is recaptured as ordinary income. If a machine was purchased for $100,000, depreciated to $20,000 adjusted basis, and sold for $90,000, the first $80,000 of gain is ordinary income (depreciation recapture); only the remaining $10,000 is capital gain.
Section 1250 recapture: On real property, only accelerated depreciation (above straight-line) is recaptured as ordinary income. Straight-line depreciation on real property sold at a gain is subject to the 25% “unrecaptured Section 1250 gain” rate — not the standard long-term capital gains rate.
Key capital gains planning strategies
- Holding period management. The most fundamental planning lever: holding an asset for more than one year before selling converts a short-term gain (ordinary income rate, up to 37%) to a long-term gain (preferential rate, up to 23.8%). The tax saving can be substantial.
- Tax-loss harvesting. Capital losses offset capital gains dollar-for-dollar. Selling securities at a loss to offset realized gains reduces or eliminates capital gains tax for the year. Net capital losses can offset up to $3,000 of ordinary income per year; excess losses carry forward.
- Qualified Opportunity Zone investment. Gains reinvested in a Qualified Opportunity Fund within 180 days of the sale defer the original gain until 2026 (the deferral deadline has passed, but new investments still receive the gain exclusion on appreciation within the fund after 10 years).
- Charitable giving of appreciated assets. Donating appreciated securities or real estate to a qualified charity avoids capital gains tax entirely while generating a charitable deduction at fair market value — a double tax benefit compared to selling the asset and donating cash.
- Installment sale. Spreading the receipt of proceeds from a business or property sale over multiple years spreads the gain recognition — potentially keeping each year’s gain in a lower rate bracket.
How CPA firms advise on capital gains
Capital gains planning is one of the highest-value advisory services a CPA firm provides, particularly around business sales, real estate transactions, and large investment portfolios. Before a significant asset sale, the firm calculates the expected gain, models the tax at different rates, identifies applicable recapture, and evaluates planning strategies. For business owners approaching an exit, capital gains planning — including entity structure review, installment sale modeling, and QSBS eligibility — can have six- or seven-figure tax implications. The CPA firm’s role is to ensure these decisions are made with full visibility of the tax consequences before the transaction closes, not after.
How capital gains work in offshore accounting
Capital gains are a tax compliance and planning matter that sits with the CPA firm, not the offshore accounting team. The offshore team does not calculate capital gains, does not determine the holding period for tax purposes, does not advise on tax-loss harvesting, and does not model the tax implications of an asset sale. These require tax expertise and knowledge of the client’s full tax position that are outside the offshore team’s scope.
What the offshore team does that directly affects capital gains accuracy is maintain asset records with the precision required to calculate adjusted cost basis. Basis calculation depends on having the original cost, acquisition date, and all subsequent adjustments accurately recorded from the moment of purchase. For business property, this means the fixed asset schedule must accurately reflect the original cost, all capitalized improvements, and all depreciation taken — because both the adjusted basis and the depreciation recapture calculation depend on these figures. An offshore team that lets the fixed asset schedule drift from reality — missing improvements, applying the wrong depreciation rate, failing to record partial disposals — creates a basis problem that the CPA firm will have to reconstruct at sale time, often under time pressure.
The specific discipline for business assets: every capital expenditure must be recorded to the fixed asset schedule (not expensed), every disposal must be recorded (removing the asset and its accumulated depreciation from the schedule), and the depreciation calculation must be applied correctly and consistently each period. This is not glamorous work, but it is what makes the basis calculation defensible when the asset is eventually sold — which may be years or decades after the offshore team first recorded it.
For investment holding companies or businesses with significant investment portfolios, the offshore team records investment purchases and sales accurately, maintains cost basis records per investment lot, and records unrealized gains or losses on the balance sheet as required under the applicable accounting standard. The determination of which securities to sell, when to sell them, and how to sequence sales for tax optimization — these are advisory decisions belonging to the CPA firm and the investment manager.
What are the common misconceptions about capital gains?
- “All capital gains are taxed at the same low rate.” Short-term gains are taxed as ordinary income — potentially at 37%, not the preferential 15% or 20% rate. Only gains on assets held more than one year receive preferential treatment. The one-year distinction is one of the most consequential in the tax code.
- “The gain is the sale price minus what I paid.” The gain is the sale proceeds minus the adjusted cost basis — which may be very different from the original purchase price after depreciation, improvements, and other adjustments. For a fully depreciated business asset with zero adjusted basis, the entire sale price is a gain (much of it ordinary income from recapture).
- “I can avoid capital gains by reinvesting the proceeds.” Unlike a 1031 exchange for real estate or a Qualified Opportunity Zone investment (which have specific rules), simply reinvesting the sale proceeds of a stock or business interest does not defer the gain. The gain is recognized at the time of sale regardless of what is done with the proceeds.
- “Capital losses can offset ordinary income.” Capital losses first offset capital gains of the same type (short-term losses against short-term gains, long-term against long-term, then cross-netting). Only after all gains are offset can capital losses offset ordinary income — and only up to $3,000 per year. Excess capital losses carry forward indefinitely.
What terms are commonly confused with capital gains?
| Confused with | The key difference |
|---|---|
| Ordinary income | Ordinary income (wages, business income, interest, short-term gains) is taxed at regular marginal rates up to 37%. Long-term capital gains receive preferential rates of 0%, 15%, or 20%. The distinction is one of the most significant in individual tax planning |
| Section 1231 gain | Section 1231 applies to depreciable business property held more than one year. Net Section 1231 gains receive long-term capital gain treatment; net Section 1231 losses receive ordinary loss treatment — an asymmetry not available to pure capital assets |
| Depreciation recapture | Depreciation recapture is the portion of a sale gain on depreciable property that is taxed as ordinary income (or at 25% for real property) rather than at capital gains rates. It is embedded in what looks like a capital gain transaction but is taxed differently |
| Unrealized gain | An unrealized gain is appreciation on an asset not yet sold. No tax is owed on unrealized gains. Capital gains tax is triggered by realization — the actual sale or exchange of the asset |
Common client questions about capital gains
What is the difference between short-term and long-term capital gains?
Short-term capital gains arise from selling assets held for one year or less and are taxed as ordinary income at your marginal rate — up to 37% federally. Long-term capital gains arise from selling assets held more than one year and are taxed at preferential rates of 0%, 15%, or 20% depending on your taxable income. The one-year holding period distinction is one of the most significant tax planning levers available.
What are the long-term capital gains tax rates for 2026?
For 2026: 0% for single filers with taxable income up to approximately $48,350 and joint filers up to approximately $96,700; 15% for most taxpayers above those thresholds; 20% for high-income taxpayers above approximately $533,400 (single) or $600,050 (joint). The 3.8% Net Investment Income Tax also applies to investment income above $200,000 (single) or $250,000 (joint), raising the top effective rate to 23.8%.
What is the adjusted cost basis and why does it matter?
The adjusted cost basis is the original purchase price adjusted for events that change the effective cost: improvements, reinvested dividends, stock splits, return-of-capital distributions, and depreciation taken. The capital gain equals the sale price minus the adjusted cost basis. Getting basis right is critical — basis records must be maintained from purchase through sale, sometimes over decades.
How are capital gains from selling a business taxed?
It depends on the sale structure. Stock sales produce capital gains on the appreciated value above the owner’s basis in the stock. Asset sales produce ordinary income on inventory and receivables, depreciation recapture on business assets, and capital gains on goodwill and other capital assets. The mix significantly affects the total tax — which is why tax planning before a business sale can have six- or seven-figure consequences.
What is Section 1231 gain and how is it different from a capital gain?
Section 1231 applies to gains and losses from selling depreciable business property held more than one year. Net Section 1231 gains are treated as long-term capital gains. Net Section 1231 losses are treated as ordinary losses — deductible against ordinary income without the $3,000 annual cap that applies to capital losses. This asymmetry makes Section 1231 property particularly advantageous: you get capital gain treatment on gains and ordinary loss treatment on losses.
