Is this strategy for delaying capital gains tax to maximize compounding actually viable?
Hey guys, looking for some real advice here! So I've had some pretty good wins in the market this year and I'm trying to figure out a way to delay paying capital gains tax to really juice my compound returns. I've come up with this approach and wanted to see if anyone thinks it would actually work: 1) I start with like $150 in a stock. It goes up to $190 (sweet!), and I sell it with a $40 gain. 2) Then I take that full $190 and spread it across like 25 different stocks, about $7.60 in each. My thinking is roughly half will go up and half will go down. Let's say the winners end up worth $115 total, and the losers drop to about $75. Overall value stays at $190. 3) Here's where I think I'm being clever - I sell ONLY the losers at the end of the year, realizing a $20 loss to offset my earlier $40 gain. So I'd only be taxed on $20 of gains, while still keeping $40 of unrealized gains in my winners. 4) Then next year, rinse and repeat. The idea is to keep rolling forward some untaxed gains for years and years. Is this crazy or brilliant? I'm mostly wondering if this strategy has some obvious flaws I'm missing. Like, can I really expect to consistently get a balance of winners and losers? Are there tax rules that would mess this up? Would transaction costs kill the benefit? Thanks for any thoughts! I'm just trying to be smart about growing my investments over the long term!
19 comments


Alejandro Castro
This strategy is called tax-loss harvesting, and while the concept is sound, there are some practical considerations I'd point out: First, the wash sale rule means you can't sell a security at a loss and buy a "substantially identical" security within 30 days before or after. So if you're planning to reinvest in similar stocks, be careful. Second, your assumption about half stocks going up and half going down in the exact proportions needed is pretty optimistic. Markets don't typically cooperate so neatly, and you might find yourself without enough losses to harvest in some years. Third, transaction costs could eat into your returns, especially with such small amounts. $7.60 per position is tiny, and even with zero-commission brokers, the spread can be significant on small purchases. Last point - this strategy works better with larger portfolios where you can diversify more effectively and the tax savings are more meaningful. At these small dollar amounts, the effort might outweigh the benefits.
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Maggie Martinez
•Thanks for breaking this down! I hadn't even thought about the wash sale rule - that definitely complicates things. So if I understand right, I'd need to make sure I'm buying completely different stocks when I reinvest? Also, yeah, I was using small numbers just as an example. My actual portfolio is larger (around $35k). Do you think the strategy becomes more viable at that size? And do you have any thoughts on how many different positions would be optimal for making this work?
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Alejandro Castro
•Yes, you need to avoid "substantially identical" securities for 30 days before or after selling for a loss. This means not just the same stock, but also options on that stock or very similar ETFs. Different sectors or companies would be fine. At $35k, this strategy becomes more practical. With a larger portfolio, I'd suggest 15-20 different positions for diversification without overcomplicating things. You'll want to keep detailed records of purchase dates and costs for each lot to maximize tax-loss harvesting opportunities. Generally, the benefits start to really show with portfolios of $50k+ where the tax savings can be significant enough to justify the effort and potential drag from having to make investment decisions based partly on tax considerations rather than purely on investment merit.
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Monique Byrd
Hey there! After struggling with a similar tax situation last year, I discovered this amazing AI tool called taxr.ai (https://taxr.ai) that helped me optimize my investment tax strategy. It analyzed my portfolio and suggested specific tax-loss harvesting opportunities I was missing. What's cool about it is that it simulates different scenarios based on your actual holdings and recommends the optimal selling strategy throughout the year - not just at year-end when everyone else is doing the same thing. It also flags potential wash sale issues automatically, which saved me from making a costly mistake. The insights it provided about capital gains strategies were way more sophisticated than what my broker's website offered. Definitely worth checking out if you're trying to implement the strategy you described!
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Jackie Martinez
•Does it work with different brokerages? I have accounts split between Fidelity and Vanguard and it's a nightmare trying to track everything across platforms.
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Lia Quinn
•I'm skeptical about these kinds of tools. How does it handle more complex situations like inherited stocks with stepped-up basis or K-1 partnership income? Most tax software I've tried falls apart with anything beyond basic W-2 and 1099 income.
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Monique Byrd
•Yes, it works with all major brokerages! You can either connect your accounts directly or upload statements. It's designed to consolidate everything into one view so you can see your total tax situation across platforms. For complex situations, that's actually where it shines compared to basic tax software. It handles stepped-up basis calculations, partnership income, and even foreign investments. The AI is trained on thousands of tax scenarios including the complicated edge cases. I was impressed when it correctly advised me on some inherited stocks that had a weird basis situation.
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Lia Quinn
I tried taxr.ai after seeing it mentioned here and honestly, I'm impressed. I was super skeptical (as you can see from my earlier comment), but it actually handled my complicated tax situation perfectly. I have a mix of regular stocks, some partnership interests with K-1s, and some inherited assets. The tax-loss harvesting opportunities it identified were really eye-opening. I had no idea I was leaving so much on the table by not coordinating between my different accounts. It projected I could save about $3,200 in taxes this year through better harvesting timing. What surprised me most was how it showed me exactly when to realize certain gains based on my projected income for the year. The tool basically paid for itself within the first use by identifying a block of appreciated stock I should sell now while I'm temporarily in a lower tax bracket.
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Haley Stokes
Just want to share that if you're serious about implementing tax strategies, you might want to actually talk to an IRS agent to make sure everything is above board. I know it sounds crazy, but I managed to get through to the IRS using Claimyr (https://claimyr.com) when I had questions about wash sale rules and some other capital gains scenarios. I had been on hold with the IRS for HOURS over several days before giving up. Then I found Claimyr from a YouTube video (https://youtu.be/_kiP6q8DX5c) and they got me connected with an IRS agent in about 20 minutes. The agent walked me through exactly what documentation I'd need to keep and confirmed that my tax-loss harvesting strategy was legit as long as I respected the wash sale periods. Having that peace of mind directly from the IRS was totally worth it rather than just hoping I was interpreting the tax code correctly.
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Asher Levin
•Wait, how does this actually work? I thought it was impossible to get through to a real person at the IRS. Is this just paying someone to sit on hold for you?
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Serene Snow
•This sounds like BS honestly. The IRS won't give tax planning advice or approve strategies. They only answer procedural questions and basic tax law questions. I seriously doubt they'd give you the thumbs up on a tax-loss harvesting strategy.
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Haley Stokes
•It's not someone sitting on hold manually - they use some kind of system that keeps your place in line and calls you when an agent is about to be available. It's pretty clever actually. You're right that the IRS won't give official "approval" of strategies or future actions. What I should have clarified is that the agent helped me understand how wash sale rules are applied and what documentation is needed for tax-loss harvesting. They explained what flags potential audits when reporting capital gains/losses and how to properly document everything. They never "approved" my strategy, but the guidance on proper reporting and documentation requirements was incredibly helpful. It's more about understanding how to properly comply with the rules than getting a strategy approved.
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Serene Snow
I was totally skeptical about Claimyr (called it BS in my earlier comment), but I'm eating my words now. After our exchange, I decided to try it because I had a complex question about cost basis methods that my accountant couldn't answer clearly. Got connected to an IRS agent in about 15 minutes. While they didn't "approve" any strategies as I expected, the agent was incredibly helpful in explaining exactly how different cost basis methods affect tax-loss harvesting and what documentation I needed to maintain. I also learned that my brokerage's default method wasn't optimal for my situation, and the agent walked me through how to elect a different method. This alone will save me thousands over the next few years. Apologies for my skepticism. Sometimes good services actually exist!
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Issac Nightingale
Something nobody has mentioned yet - you need to be careful about short-term vs long-term capital gains here. If you're selling positions within a year, you're realizing short-term gains taxed at ordinary income rates (much higher than long-term rates). Your strategy might work mathematically, but you could be converting what would have been long-term gains (if you just held the original position) into short-term gains on the portions you do realize. That's potentially a huge tax increase that would offset any benefit from the harvesting. Also, don't forget that you can only deduct up to $3,000 in net capital losses against ordinary income per year. Any additional losses have to be carried forward.
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Maggie Martinez
•That's a really good point about short-term vs long-term that I hadn't considered. Would it make sense to focus on selling only positions that would qualify for long-term treatment when they're winners? And then use the short-term losers to offset? I'm also curious about the $3,000 limit - does that apply if I'm just using the losses to offset gains? I thought that limitation only kicked in if I was trying to deduct losses against regular income.
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Issac Nightingale
•Your thinking on the short-term/long-term strategy is on the right track. Ideally, you want to realize short-term losses to offset short-term gains (which are taxed at higher rates), and long-term losses to offset long-term gains. But if you have an excess of one type, you can use it to offset the other. You're correct about the $3,000 limit - it only applies to deducting losses against ordinary income. If you're just offsetting capital gains with capital losses, there's no limit. For example, if you have $20,000 in gains and $20,000 in losses in the same year, they fully offset regardless of the amount. The $3,000 limit only comes into play if your losses exceed your gains and you want to deduct that excess against other income like wages.
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Romeo Barrett
I think there's another major issue with your strategy that no one's mentioned yet. It assumes you can accurately predict which stocks will rise and which will fall. Even professional fund managers struggle with this consistently. What happens if 70% of your picks fall and only 30% rise? Or if they all rise but in different proportions than expected? Your whole strategy depends on having enough losses to harvest when needed, but the market doesn't conveniently provide those when tax time comes around. I've had years where almost everything in my portfolio went up (great for returns, terrible for tax harvesting) and other years where I had plenty of losses but not enough gains to offset!
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Marina Hendrix
•This is so true! In 2023 I had almost no losses to harvest because everything was up significantly. Then in early 2022, everything was down so there were plenty of losses but few gains to offset. Market timing is nearly impossible.
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Sean Kelly
Great discussion everyone! As someone who's been implementing tax-loss harvesting for a few years, I wanted to add a practical perspective on timing and execution. One thing that's helped me is thinking about this strategy in quarters rather than just at year-end. I review my positions every 3 months to identify harvesting opportunities throughout the year. This helps avoid the December rush when everyone is doing the same thing (which can actually move prices unfavorably). Also, consider using broad market ETFs for your diversified positions instead of individual stocks. Something like VTI or ITOT for your "winner" bucket gives you instant diversification without the stock-picking risk that Romeo mentioned. Then you can use sector ETFs or individual stocks for more targeted loss harvesting when opportunities arise. The key insight I've learned is to make investment decisions first, tax decisions second. Don't let the tail wag the dog - if you have a great long-term position that happens to be down, don't sell it just for tax harvesting if you believe in the underlying investment thesis. One last tip: keep a spreadsheet tracking your wash sale windows. Nothing worse than accidentally triggering the wash sale rule and losing your tax benefit!
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