What is tax drag? Tax drag is the reduction in an investment’s return caused by the taxes you owe each year on dividends, interest, and realized capital gains inside a taxable account. It is the gap between a pre-tax return and the after-tax return you actually keep, and it can quietly compound into a large dollar difference over decades.
Tax drag is the reduction in your investment return caused by taxes paid each year on dividends, interest, and realized capital gains in a taxable account. Measure it by subtracting the after-tax return from the pre-tax return: an 8% holding taxed down to 6% carries a 2 percentage-point drag, or 25% of the return. In 2026, long-term gains are taxed at 0%, 15%, or 20% (IRS Topic no. 409).
What is tax drag, in plain terms
Tax drag is the portion of an investment return lost to taxes that come due while you still hold the investment. It applies to taxable brokerage accounts, where the IRS treats interest, dividends, and realized capital gains as investment income taxable in the year received (Source: IRS Publication 550, 2025). The result is a gap between the return a security produces and the return you keep.
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Tax drag is not a penalty or a fund fee. It is the ordinary income and capital gains tax that federal (and often state) law applies to the money your investments generate. The size of the drag depends mostly on three drivers: your tax rate, the rate of return, and how long you hold each position (Source: IRS Topic no. 409, 2025).
How do you calculate tax drag
You calculate tax drag by comparing the pre-tax return with the after-tax return. There are two common expressions, and they measure different things, which is a frequent source of confusion. One states drag as raw percentage points; the other states it as a proportion of the return. Both use the same before-tax and after-tax figures.
The two formulas
Two standard formulas turn the same before-tax and after-tax figures into a drag number, but on different scales. The percentage-points method subtracts the after-tax return from the pre-tax return, reporting the return given up. The proportional method divides that loss by the pre-tax return, reporting the share of return lost. So a stated 2% drag can mean 2 percentage points or 2% of the return, which are very different amounts.
- Percentage-points method (simpler): Pre-tax return minus after-tax return. A 7% return that nets 5.6% has a drag of 1.4 percentage points; an 8% return that nets 6% has a drag of 2 percentage points.
- Proportional method: Tax drag = (1 minus after-tax return divided by before-tax return) times 100. The 8% and 6% figures give (1 minus 6 divided by 8) times 100 = 25%. Taxes consumed 25% of the return, which equals the 2 percentage points of the 8%. The 7% and 5.6% figures give (1 minus 5.6 divided by 7) times 100 = 20%.
Both statements describe one scenario. The percentage points measure the return given up; the proportional figure measures the share of the return lost. When an article cites “a 2% tax drag,” check whether it means 2 percentage points of return or 2% of the return, because those are very different amounts.
A worked dollar example
Dollar figures make the drag concrete. Consider $100,000 in a taxable account invested in a bond yielding 4%, held by an investor we assume sits in the 32% marginal bracket. The bond generates $4,000 of interest, taxed as ordinary income. At an assumed 32%, the first-year tax is $1,280, and that $1,280 is the first-year tax drag on the position (interest is taxed at ordinary rates per IRS Publication 550, 2025).
Because interest income is generally taxed at ordinary rates, up to 37% at the top bracket in 2026 (over $640,600 single or $768,700 married filing jointly, per IRS Rev. Proc. 2025-32), bond-heavy taxable accounts in high brackets tend to carry heavier drag than portfolios of long-term-held equities taxed at preferential rates.
What causes tax drag
Tax drag is caused by the taxable events a portfolio produces while you hold it. The four main sources are dividends, interest income, realized capital gains, and portfolio turnover that triggers those gains. Each is treated differently under the tax code, which is why two portfolios with identical returns can carry very different drag.
- Dividends: Qualified dividends are taxed at the lower long-term capital gains rates; ordinary (nonqualified) dividends are taxed at ordinary income rates (Source: IRS Topic no. 404, 2025). Qualifying generally requires holding the common stock more than 60 days during the 121-day window around the ex-dividend date.
- Interest income: Interest from bonds, CDs, and cash is generally taxed as ordinary income (Source: IRS Publication 550, 2025).
- Realized capital gains: An appreciated asset held one year or less produces a short-term gain taxed as ordinary income; held more than one year, it is a long-term gain taxed at 0%, 15%, or 20% (Source: IRS Topic no. 409, 2025).
- Portfolio turnover: Frequent trading, whether by an investor or inside an actively managed fund, realizes gains sooner and more often, which raises drag. Broad index strategies tend to turn over less than active funds.
How tax drag compounds over decades
Tax drag matters most over long horizons because the taxes paid each year no longer compound. A small annual gap widens into a large dollar difference across a multi-decade holding period. The table below illustrates the same $100,000 growing at 7% pre-tax versus 5.6% after-tax (the 1.4 percentage-point example), with no additions.
| Years invested | At 7% pre-tax | At 5.6% after-tax | Difference |
|---|---|---|---|
| 10 years | $196,715 | $172,440 | $24,275 |
| 20 years | $386,968 | $297,357 | $89,611 |
| 30 years | $761,226 | $512,764 | $248,462 |
These figures are illustrative arithmetic using the example rates above, not a projection, and returns are never guaranteed. The point is directional: a 1.4 percentage-point annual drag can grow into a six-figure difference over 30 years because each year’s tax is money removed from future compounding.
What is a typical tax drag range
There is no official IRS benchmark for tax drag, and any figure depends on your tax rate, return, and turnover. In real-world portfolios, published advisor and fund research often puts annual drag somewhere between roughly 0.8% for tax-efficient holdings and about 2.0% or more for tax-inefficient ones. The table below frames that observed range; the exact amount varies by portfolio.
| Portfolio profile | Typical annual drag (observed) | Main driver |
|---|---|---|
| Tax-efficient (broad index funds, ETFs, low turnover) | Around 0.8% or less | Few realized gains, mostly qualified dividends |
| Mixed (some active funds, moderate turnover) | Roughly 1.0% to 1.5% | Periodic distributions and trading |
| Tax-inefficient (high-turnover active funds, taxable bonds) | About 2.0% or more | Frequent short-term gains, ordinary-rate interest |
These ranges are drawn from independent measures such as Morningstar’s tax-cost ratio, which estimates the share of return lost to taxes on distributions. They are not IRS figures and vary widely by portfolio, tax bracket, and holding period (Source: Morningstar, Tax-Cost Ratio methodology).
Two layers often left out: NIIT and state tax
Many tax drag explanations stop at federal capital gains and dividend rates, but two additional layers can increase real drag for higher earners. The first is the Net Investment Income Tax; the second is state income tax. Both are set out in statute and can add several percentage points depending on income and residence.
The Net Investment Income Tax (NIIT) adds 3.8% on the lesser of net investment income or the amount of modified adjusted gross income (MAGI) over a threshold (Source: IRS, Net Investment Income Tax). The thresholds are set by statute and are not inflation-indexed: $250,000 married filing jointly, $200,000 single or head of household, and $125,000 married filing separately. Net investment income includes interest, dividends, and capital gains, so for affected investors the top effective rate on long-term gains can reach 23.8%.
State income tax is a separate layer. Many states tax dividends, interest, and capital gains as ordinary income, so an investor in a high-tax state can face several additional percentage points of drag beyond the federal figures. Because state rules vary widely, the exact amount depends on residence and circumstances.
How to reduce tax drag
Tax drag can often be reduced by changing where assets are held, which vehicles hold them, and when gains are realized. None of the following is a recommendation; each is a neutral description of approaches the tax rules allow, and suitability depends on individual circumstances.
Use tax-advantaged accounts
Tax-advantaged accounts shelter investment income from annual taxation, which removes or defers drag. Traditional 401(k) and IRA accounts defer tax until withdrawal; Roth accounts hold after-tax dollars and offer tax-free qualified distributions (Source: IRS Publication 590-B, 2025). For 2026, the 401(k) elective deferral limit is $24,500 and the IRA limit is $7,500. Traditional accounts carry required minimum distributions beginning at age 73, while a Roth IRA has no lifetime RMDs for the original owner.
Compare the same dollar across account types
Placing the same dollar in different account types changes how, and when, investment income is taxed over the holding period. A taxable brokerage account is taxed each year, a traditional 401(k) or IRA defers tax until withdrawal, and a Roth account is funded with after-tax dollars and can distribute qualified earnings tax-free. The table below summarizes the general federal treatment; it is educational and simplifies many rules.
| Account type | Tax on annual income and gains | Tax at withdrawal |
|---|---|---|
| Taxable brokerage | Dividends, interest, realized gains taxed yearly (0%/15%/20% or ordinary) | No additional tax on basis; gains already taxed |
| Traditional 401(k) / IRA | None while invested (deferred) | Distributions taxed as ordinary income; RMDs from age 73 |
| Roth IRA / Roth 401(k) | None while invested | Qualified distributions tax-free; no lifetime RMDs for the original Roth IRA owner, and Roth 401(k) lifetime RMDs ended in 2024 (SECURE 2.0) |
Source: IRS Publication 590-B (2025) and IRS Topic no. 409 (2025). Early distributions from tax-deferred accounts before age 59½ may trigger a 10% additional tax, subject to exceptions (Source: IRS Topic no. 558).
Other approaches the rules allow
Beyond account choice, the tax rules permit several techniques that can lower how much of a return is lost to tax. These include tax-loss harvesting to offset realized gains, choosing which tax lots to sell, asset location that shelters tax-inefficient holdings, tax-efficient index funds and ETFs, and municipal bonds whose interest is often exempt from federal tax. Each is neutral, and suitability depends on individual circumstances.
- Tax-loss harvesting: Realizing losses to offset realized gains, which can lower the taxable gain that drives drag (subject to wash-sale rules under IRS Publication 550).
- Tax-lot selection (HIFO vs FIFO): When selling part of a position, choosing which specific lots to sell changes the realized gain. Selling highest-cost lots first (HIFO) usually realizes a smaller gain than the default first-in-first-out (FIFO). The effect varies by portfolio.
- Asset location: Holding tax-inefficient assets, such as taxable bonds or high-turnover funds, inside sheltered accounts, and keeping tax-efficient assets in taxable accounts.
- Tax-efficient vehicles: Broad index funds and ETFs generally realize fewer gains than high-turnover active funds; tax-managed funds target the same goal.
- Municipal bonds: Interest on many municipal bonds is exempt from federal income tax, and sometimes state tax, which can reduce interest-driven drag for investors in higher brackets (Source: IRS Publication 550).
- Holding period: Holding an appreciated asset more than one year converts a short-term gain (ordinary rates up to 37%) into a long-term gain (0%/15%/20%) (Source: IRS Topic no. 409).
These approaches interact with broader retirement-tax planning. Moving assets from a taxable account into a Roth can eliminate future drag on that money, but the conversion itself raises taxable income the year it happens. Whether a Roth conversion makes sense depends on current versus expected future rates and its break-even horizon, and figuring out how much to convert is its own analysis. This is general education, not a recommendation.
Estimate your own tax drag
Use the estimator below to turn your own numbers into a drag figure. Enter an amount, a pre-tax return, the tax rate that applies to that return, and a time horizon. The tool reports your after-tax return, the drag in percentage points and as a share of return, and an illustrative dollar gap over the horizon. It is arithmetic only, not a projection, and returns are not guaranteed.
Tax drag estimator
Amount invested ($):
Pre-tax annual return (%):
Tax rate on that return (%):
Years invested:
Enter your figures and select Calculate.
Illustrative arithmetic only, not a projection or advice; returns are not guaranteed.
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Frequently asked questions
The questions below summarize how tax drag is defined, measured, and managed under current federal rules. Each answer is educational, cites a primary source where a specific figure is used, and reflects 2026 amounts where they apply. None of the answers is investment, tax, or legal advice.
How do you calculate tax drag?
You calculate tax drag by comparing pre-tax and after-tax return. The percentage-point method subtracts after-tax from pre-tax return (8% minus 6% equals 2 points). The proportional method uses (1 minus after-tax divided by before-tax) times 100, which turns the same figures into 25% of the return lost. Both describe one result on different scales (Source: IRS Topic no. 409).
What is a good tax drag percentage?
There is no official IRS benchmark, and any figure depends on tax rate, return, and turnover. In practice, published research often puts annual drag near 0.8% or less for tax-efficient index portfolios and around 2.0% or more for high-turnover, tax-inefficient ones. Lower is generally better, but the amount varies widely by portfolio, bracket, and holding period (Source: Morningstar, Tax-Cost Ratio methodology).
How can I reduce tax drag?
Common approaches the rules allow include using tax-advantaged accounts such as 401(k), IRA, and Roth accounts; tax-loss harvesting; tax-lot selection (HIFO vs FIFO); asset location; low-turnover index funds and ETFs; municipal bonds; and holding assets more than one year for long-term rates (Sources: IRS Publications 550 and 590-B, 2025). Suitability depends on individual circumstances; none of this is advice.
What causes tax drag?
Tax drag is caused by taxable events a portfolio generates: dividends, interest income, realized capital gains, and portfolio turnover that triggers those gains. Ordinary dividends and interest are taxed at ordinary rates (up to 37% in 2026), while qualified dividends and long-term gains receive 0%/15%/20% rates (Sources: IRS Topics 404 and 409, Rev. Proc. 2025-32).
Does tax drag apply to retirement accounts?
Generally no drag applies to income and gains while assets sit inside tax-advantaged accounts. Traditional 401(k) and IRA growth is tax-deferred, and Roth qualified distributions are tax-free (Source: IRS Publication 590-B, 2025). Tax applies later on traditional withdrawals as ordinary income, and required minimum distributions begin at age 73 under SECURE 2.0.
What is the difference between tax drag and expense ratio?
An expense ratio is the fee a fund charges to operate, deducted regardless of taxes. Tax drag is the return lost to taxes on the income and gains the investment generates, which depends on your tax rate and account type. A fund can carry a low expense ratio yet still create meaningful tax drag through high turnover in a taxable account.
How does tax drag affect investment returns?
Tax drag lowers the return you keep and, more importantly, the amount left to compound, because taxes paid each year no longer grow in later years. In the 7% versus 5.6% example, $100,000 grows to about $761,000 pre-tax versus about $513,000 after-tax over 30 years, an illustrative difference of roughly $248,000 (arithmetic only, not a projection).
Which investments create the most tax drag?
High-turnover active funds and taxable bonds, CDs, and cash tend to create the most tax drag, because they generate frequent short-term gains and interest taxed at ordinary rates up to 37% in 2026. Broad index funds, ETFs, and long-term-held equities taxed at 0%/15%/20% generally create less (Sources: IRS Publication 550 and Topic no. 409, 2025).
Sources
IRS Publication 550, Investment Income and Expenses (2025): https://www.irs.gov/publications/p550
IRS Publication 590-B, Distributions from IRAs (2025): https://www.irs.gov/publications/p590b
IRS Topic no. 404, Dividends: https://www.irs.gov/taxtopics/tc404
IRS Topic no. 409, Capital Gains and Losses: https://www.irs.gov/taxtopics/tc409
IRS Topic no. 558, Additional Tax on Early Distributions: https://www.irs.gov/taxtopics/tc558
IRS, Net Investment Income Tax: https://www.irs.gov/individuals/net-investment-income-tax
IRS Rev. Proc. 2025-32 (2026 inflation adjustments): https://www.irs.gov/pub/irs-drop/rp-25-32.pdf
Morningstar, Tax-Cost Ratio methodology: https://www.morningstar.com/content/dam/marketing/shared/research/methodology/678272-TaxCostRatioMethodology.pdf
About the author
Craig Wear, CFP®, is the founder of Q3 Advisors, a registered investment adviser focused on retirement tax planning. His work centers on how taxes on investment income, distributions, and conversions affect long-term outcomes for retirement savers.
