Can capital losses offset a Roth conversion? Mostly no. A Roth conversion is taxed as ordinary income, and a capital loss offsets your capital gains first, then reaches only $3,000 of ordinary income per year. So a harvested stock loss cannot erase a large conversion bill the way many converters hope, though a business or pass-through loss is a different story.
A Roth conversion is ordinary income (a retirement account distribution), not a capital gain. Capital losses net against capital gains without limit, but only $3,000 of any leftover net loss ($1,500 married filing separately) reaches ordinary income in a single year. That $3,000 is the most a pure stock loss can trim from your conversion tax; the rest carries forward indefinitely.
Can capital losses offset a Roth conversion? The short answer
Capital losses can offset a Roth conversion only slightly. A conversion is a distribution from a traditional IRA or 401(k), taxed at ordinary rates in the year you convert, while capital losses belong to the capital-gains system. The two meet through one narrow $3,000 door, which is why the hope that losses cancel a conversion usually disappoints.
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Why a conversion is ordinary income, not a capital gain (Form 1040 line 4b/5b vs Schedule D line 7)
A Roth conversion lands on Form 1040 line 4b (IRA) or line 5b (pension) and flows into line 15 taxable income as ordinary income, the same bucket as wages. Capital losses live on Schedule D and enter through line 7. Because a conversion never joins the Schedule D netting, a harvested loss has no like-character gain to cancel it against. Our overview of Roth conversion planning explains why conversion dollars are taxed this way.
The one place they touch: the $3,000 ordinary-income deduction ($1,500 MFS)
There is exactly one bridge. After capital losses wipe out every capital gain, any remaining net loss offsets up to $3,000 of ordinary income per year ($1,500 married filing separately). Conversion income is ordinary income, so that $3,000 shaves a sliver off it. The $3,000 cap has not been indexed for inflation since Congress set it in 1978, so it never grows with your loss.
How much of a stock loss can actually reduce your conversion tax?
In a year with no capital gains, the honest answer is $3,000. That is the annual limit on how much net capital loss reaches ordinary income, and conversion income sits inside ordinary income. A five-figure or six-figure harvested loss does not scale up against a conversion; it simply builds a carryover.
The ordering rule: gains first (unlimited), then $3,000 of ordinary income
Capital losses apply in a fixed sequence, and a Roth conversion sits at the very back of it. Short-term and long-term losses first net against gains of the same character without any limit, then cross over, and only a remaining balance reaches ordinary income at $3,000 a year. A conversion, being ordinary income, sits behind that cap. The full order runs as follows.
- Net short-term losses against short-term gains.
- Net long-term losses against long-term gains.
- Cross-apply any remaining loss to the other category of gain.
- Deduct up to $3,000 of any remaining net loss against ordinary income, including conversion income ($1,500 married filing separately).
- Carry the unused balance forward to the next year.
Worked example: a $50,000 conversion plus a $40,000 harvested loss
Suppose you convert $50,000 and harvest $40,000 of capital losses the same year, with no realized gains. This example is illustrative, not a projected result. Only $3,000 of the loss offsets ordinary income, so the conversion is taxed on $47,000 rather than $50,000. The other $37,000 becomes a carryover; it did not remove $40,000 of income, only $3,000. For sizing the conversion itself, see our guide on how much to convert to Roth.
What that $3,000 is worth in tax dollars (2026 bracket table)
Because the offset reduces ordinary income, its value equals $3,000 multiplied by your marginal rate under the 2026 brackets. The table below shows the cash impact at three common brackets, assuming the full $3,000 lands inside one bracket. Even at 32%, it is worth $960, nowhere near enough to zero out a $50,000 conversion.
| 2026 marginal bracket | Single bracket range | $3,000 offset value |
|---|---|---|
| 22% | $50,400 to $105,700 | $660 |
| 24% | $105,700 to $201,775 | $720 |
| 32% | $201,775 to $256,225 | $960 |
One exception that is NOT a capital loss: business and pass-through losses
Not every loss is a capital loss. A business loss or a pass-through K-1 loss is an ordinary loss, not a capital loss, so it is not trapped behind the $3,000 ceiling. An ordinary business loss can offset conversion income dollar for dollar, subject to its own rules, which is a genuinely different outcome that many converters overlook when they focus only on stock positions.
How an NOL or K-1 business loss can offset conversion income beyond $3,000
A current-year ordinary loss from a Schedule C business, or a nonpassive K-1 loss from an S corporation or partnership where you materially participate, offsets conversion income with no $3,000 cap. A net operating loss (NOL) carryforward under current TCJA rules can offset up to 80% of taxable income in a later year and does not expire. Two limits still apply: the passive-activity rules, and the section 461(l) excess business loss cap.
Using tax-loss harvesting around a conversion: the right and wrong way
Tax-loss harvesting still belongs in a Roth conversion plan, just not as a way to erase conversion income. Used well, it cleans up capital gains and frees cash to pay the tax from outside the IRA. Used poorly, it becomes a bet that never pays off, because the $3,000 ceiling caps the ordinary-income benefit no matter how much you sell.
The trap: harvesting losses to erase a five-figure conversion bill
The costly mistake is selling losers late in the year expecting the loss to wipe out a large conversion. It cannot. In a year with no capital gains, $3,000 is the entire ordinary-income offset, so a $30,000 loss and a $3,000 loss produce the same conversion-year benefit. The extra loss is not wasted, but it helps only later, at $3,000 per year, through the carryover.
The adjacent play: pairing realized gains against losses to raise tax-free cash for the tax
A useful move is the reverse of loss harvesting. If you hold appreciated positions, you can realize gains and pair them against harvested losses on Schedule D, netting to little or no capital-gains tax. That turns appreciated holdings into cash to pay the conversion tax from a taxable account, keeping the full converted balance inside the Roth. Paying the tax from outside the IRA is a theme in our Roth conversion break-even analysis.
Down-market timing: why a depressed account converts more per tax dollar
For the conversion itself, timing often matters more than harvesting. Converting while the IRA is temporarily depressed moves more shares per tax dollar, because you are taxed on the lower value. A position normally worth $100 per share trading at $80 after a 20% drawdown lets the same tax cost convert 25% more shares, and any recovery would then grow tax-free inside the Roth.
Wash-sale reminder when you re-buy harvested positions
If you harvest a loss and buy the same or a substantially identical security within 30 days before or after the sale, the wash-sale rule disallows that loss for the year. The disallowed amount is added to the basis of the replacement shares, so it is deferred, not lost. Around a conversion this matters because a disallowed loss removes even the $3,000 offset you were counting on.
Capital loss carryover and multi-year Roth conversion planning
Because most of a large harvested loss becomes a carryover, the real question is how it interacts with a multi-year conversion plan. A capital loss carryover keeps its character, never expires, and offsets $3,000 of ordinary income per year until used up. Over a conversion ladder, that produces a small but durable annual reduction in conversion income.
Carryover never expires: $3,000 of ordinary income per year
A federal capital loss carryover does not expire. It rolls forward year after year, offsetting capital gains first and then up to $3,000 of ordinary income annually, for as long as any balance remains. A $37,000 leftover loss could offset $3,000 in each of roughly a dozen future years if no gains absorb it sooner, assuming current rules hold.
Does a carryover let you convert more each year? (bracket headroom, not a license)
Yes, but only marginally. A $3,000 carryover deduction lowers taxable income by $3,000, creating $3,000 of headroom before you cross into the next 2026 bracket, such as the jump from 24% to 32% at $201,775 for a single filer. So a bracket-filling year could convert roughly $3,000 more at the same rate, genuine room but not a license to convert tens of thousands more tax-free.
The $3,000 cap is a single annual ceiling, not per-source
A carryover keeps its character (short-term stays short-term, long-term stays long-term), but the $3,000 ordinary-income limit is not applied per lot or per source. It is one annual ceiling on how much total net capital loss reaches all your ordinary income combined. Wages, interest, and conversion income share the same $3,000 door, so you cannot stack multiple offsets in one year.
Bottom line: when capital losses help a conversion, and when they do not
Capital losses are a supporting player in a Roth conversion plan, not the star. They help when you also have realized gains, when you want a modest $3,000 annual trim, or when harvesting frees cash to pay the tax. They disappoint when you expect them to zero out a large conversion. The checklist sorts the two cases, including the NIIT and RMD-year notes.
- Losses can help when: you have realized capital gains to absorb them without limit; you want the $3,000 per year ordinary-income trim; or you pair gains against losses to raise tax-free cash to pay the conversion tax.
- Losses will not help when: you expect a large harvested loss to cancel a large conversion; a wash sale disallows the loss you planned to use; or you assume you can stack more than $3,000 of ordinary-income offset in one year.
- NIIT note: a conversion is ordinary income and is not itself net investment income, so it does not directly trigger the 3.8% net investment income tax (2026 thresholds of $200,000 single and $250,000 married filing jointly), though the added income can push other investment income over those thresholds.
- RMD-year note: if you are age 73 or older, your required minimum distribution must be taken first and cannot be converted, a rule detailed in our 2026 RMD guide, and the conversion locks in at the December 31 deadline.
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Q3 Advisors is a registered investment adviser focused on retirement tax planning. This page is educational and is not advice; consult a qualified professional.
Frequently asked questions
Can capital losses offset IRA distributions?
Only up to $3,000 per year. An IRA distribution, including a Roth conversion, is ordinary income, not a capital gain, so a capital loss cannot net against it directly. After your losses erase all capital gains, up to $3,000 of the remaining net loss ($1,500 married filing separately) offsets ordinary income such as an IRA distribution. Anything beyond that carries forward.
How much in capital losses can you deduct against ordinary income?
A maximum of $3,000 of net capital loss per year offsets ordinary income ($1,500 if married filing separately), applied after your losses have first offset all capital gains without limit. The $3,000 cap has not been indexed for inflation since 1978, so it does not rise with prices or with the size of your loss. Excess losses carry forward.
Does a Roth conversion count as a capital gain?
No. A Roth conversion is a distribution from a traditional IRA or 401(k), taxed as ordinary income on Form 1040 line 4b or 5b, not as a capital gain on Schedule D. Because it never enters the capital-gains system, a capital loss can reach it only through the $3,000 ordinary-income door, not at capital-gains rates.
Can you offset a Roth conversion with losses?
A capital loss offsets a Roth conversion by at most $3,000 per year, because the conversion is ordinary income. A business or pass-through K-1 loss, which is an ordinary loss rather than a capital loss, can offset conversion income beyond $3,000, subject to passive-activity and section 461(l) limits. So the type of loss decides how much of a conversion it can absorb.
Do capital losses reduce your adjusted gross income?
Yes, within limits. The allowed net capital loss, up to $3,000 per year against ordinary income after offsetting all gains, reduces adjusted gross income (AGI) because it is subtracted in arriving at AGI. Lowering AGI can matter for a converter, since AGI-linked items such as IRMAA Medicare surcharges turn on it, though the $3,000 cap keeps the effect small.
How much of a capital loss can you carry over each year?
There is no annual limit on how much loss you can carry over; the whole unused balance rolls forward. What is capped is how much you use each year: after offsetting all capital gains, only $3,000 of the carryover reaches ordinary income ($1,500 married filing separately). A federal carryover never expires and continues until the full balance is used.
