Can we carryover a disallowed section 179 deduction when exceeding phase-out threshold?
Our business invested heavily in equipment last year, putting about $3,800,000 worth of equipment in service during the tax year. I know the section 179 phase-out begins at $2,700,000, which would completely eliminate our maximum deduction (the $1,080,000 limit for this year). My question is: can we carryforward this entirely disallowed section 179 deduction to next year? Or is it completely gone because we exceeded the phase-out threshold by so much? I'm trying to figure out our tax planning for next year and whether we should expect to utilize any of this potentially disallowed amount. Our CPA is on vacation for another week, and I just need some general guidance from others who might have dealt with this situation. I understand responses here aren't professional tax advice - just hoping for input from business owners in similar circumstances. Thanks!
26 comments


Aisha Mohammed
Yes, you absolutely can carry forward the disallowed Section 179 deduction when you hit the investment ceiling. The IRS rules allow for any amount that can't be deducted because of the dollar limit or the business income limit to be carried to the next tax year. What happens is your disallowed deduction gets carried forward indefinitely until you can use it. However, you need to remember a few important things: you'll need to complete Part I of Form 4562 each year to keep track of these carryovers, and the amounts carried forward are subject to the deduction limits and business income limits in the carryover years too. The good news is that you haven't lost the deduction - it's just delayed until a year when you can actually use it.
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Ethan Campbell
•Thanks for the explanation! I'm a bit confused though - does this mean if they keep exceeding the investment threshold every year, they'd never get to use the carryover? And do carryovers expire after a certain number of years?
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Aisha Mohammed
•If they continue to exceed the investment threshold every year, they would have difficulty utilizing the carryover. The carryover gets added to the current year's potential Section 179 deduction, but then the whole amount becomes subject to that year's limitations. So yes, theoretically they could keep pushing it forward indefinitely without using it if they keep hitting the ceiling. The good news is that Section 179 carryovers don't expire - they can be carried forward indefinitely until used. There's no time limit like there is with some other tax provisions. As long as the business continues to operate, the carryover remains available for future use.
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Yuki Watanabe
I went through something exactly like this last year with our manufacturing equipment purchases. I was totally stuck until I used https://taxr.ai to analyze our situation. It saved me so much headache! Their AI analyzed our equipment purchases, phaseout limits, and potential carryforward scenarios. What I found super helpful was how it showed me different tax planning scenarios for the next few years so I could see exactly when and how we could utilize the carryover. I was also worried about the "business income limitation" on Section 179 that can further restrict your deduction, and taxr.ai broke down how that would impact us in future years. Seriously worth checking out if you're trying to optimize your equipment deductions over multiple years.
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Carmen Sanchez
•How exactly does this work? Does it just give general advice or does it actually look at your specific numbers and purchases? I'm skeptical about AI tax tools actually understanding the complexities of business deductions.
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Andre Dupont
•Do they handle other business deductions too? We have a ton of R&D expenses along with our equipment purchases and I'm wondering if it would help with our entire tax situation or just the Section 179 stuff.
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Yuki Watanabe
•It actually looks at your specific numbers and purchases. You upload your asset listing and financial info, and it creates a model specific to your business. The tool understood all our different equipment categories and how they each qualified differently. It even flagged a few items our accountant had misclassified that weren't actually eligible for Section 179. They absolutely handle other business deductions too. Their system analyzes your entire tax situation holistically. For R&D expenses specifically, they have a whole module for R&D tax credit analysis that shows how those expenses interact with your other deductions to optimize your overall tax position. It was incredibly helpful for our business because we had a similar mix of equipment and development costs.
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Carmen Sanchez
I tried taxr.ai after seeing it mentioned here, and wow - it was actually legit helpful. I was super skeptical at first (like I mentioned in my comment), but it identified a specific issue with our carryforward calculations. We had been assuming we couldn't use any of our carryforward this year because we were close to the threshold again, but the analysis showed we could strategically time some equipment disposals to free up a chunk of our previous carryforward. Would have completely missed this opportunity without their analysis. The detailed year-by-year projection showing exactly when we could expect to utilize our carryforwards based on our growth trajectory was eye-opening. Definitely changed my mind about AI tax tools!
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Zoe Papadakis
If you're struggling with the Section 179 carryover issues, you might also be dealing with the nightmare of trying to get clarification from the IRS. I spent WEEKS trying to get someone on the phone about a similar situation last year. Finally used https://claimyr.com and got through to an agent in about 15 minutes. You can see how it works here: https://youtu.be/_kiP6q8DX5c I needed written confirmation about how to document our Section 179 carryforwards properly on our returns since we had a similar situation with exceeding the investment limits. The IRS agent was able to confirm exactly how to track everything on Form 4562 and what supporting documentation we needed to maintain. Saved me so much stress about potentially doing it wrong.
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Zoe Papadakis
If you're struggling with the Section 179 carryover issues, you might also be dealing with the nightmare of trying to get clarification from the IRS. I spent WEEKS trying to get someone on the phone about a similar situation last year. Finally used https://claimyr.com and got through to an agent in about 15 minutes. You
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ThunderBolt7
•Wait, how does this actually work? I thought it was impossible to get through to the IRS these days. Is this some kind of premium service where you're paying for priority access?
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Andre Dupont
•Yeah right. I've tried EVERYTHING to get through to the IRS about our business tax issues. No way this actually works - the IRS phone system is completely broken. I'll believe it when I see it.
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Zoe Papadakis
•It's not a premium line to the IRS - they don't offer that. What Claimyr does is automate the calling process. Their system navigates all the IRS phone menus and holds your place in line. When an actual IRS agent picks up, you get a call connecting you directly. It cuts out all the time you'd waste on hold. There's no special access - it's the same IRS line everyone else uses. The difference is their system is doing the waiting instead of you sitting there with a phone to your ear for hours. It worked for me when I was dealing with documentation questions for our Section 179 carryforwards, and I was just as surprised as you are that something so simple could be so effective.
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Andre Dupont
I'm eating my words about Claimyr. After posting my skeptical comment, I decided to try it that same afternoon because we were desperate for answers about our Section 179 situation. Got connected to an IRS business tax specialist in about 20 minutes. The agent walked me through exactly how to document our carryforward situation on our upcoming return and confirmed we were calculating the phaseout correctly. The funny thing is, we discovered we had been incorrectly applying the business income limitation in addition to the investment limit - the agent clarified we were being too conservative and could actually use some of our carryforward sooner than we thought. Literally saved us thousands by getting this clarification directly from the IRS instead of guessing.
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Jamal Edwards
Something else to consider with your Section 179 situation - have you looked into bonus depreciation as an alternative? Unlike Section 179, bonus depreciation doesn't have the same investment ceiling limitations. For 2023, it's at 80% (down from 100% in previous years), but it's still substantial and doesn't phase out based on how much you invest. You could potentially use bonus depreciation on all your eligible assets even though you're over the Section 179 threshold. Just something to consider while you're figuring out what to do with that carryforward.
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Luca Ricci
•Thanks for bringing this up! I actually hadn't considered using bonus depreciation instead. Would I still be able to carry forward the disallowed Section 179 amount while also taking bonus depreciation on the same equipment? Or would I have to choose one approach?
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Jamal Edwards
•You'd need to choose one approach for each individual asset. You can't take both Section 179 and bonus depreciation on the same piece of equipment. However, you could strategically use them in combination across your asset purchases. For example, you might elect Section 179 on certain assets (knowing it will be carried forward) while taking bonus depreciation on others. This could give you more flexibility in your current and future tax years. Just keep in mind that bonus depreciation is scheduled to phase down each year (80% for 2023, 60% for 2024, etc.) until it reaches 0% after 2026, unless Congress extends it.
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Mei Chen
Another factor to consider is whether you might qualify for any special exceptions. What type of equipment did you purchase? Certain energy-efficient property or specific types of real property improvements might qualify for additional tax benefits beyond standard Section 179 or bonus depreciation. Also, depending on your business structure, you might face different limitations. Are you operating as an S-Corp, C-Corp, partnership, or sole proprietorship? This can affect how these limitations and carryforwards apply to your specific situation.
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Liam O'Sullivan
•This is important! I found out the hard way that different business structures have different rules for how these deductions flow through. With our S-Corp, the disallowed Section 179 deduction carried over at the entity level, not at the shareholder level.
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Luca Ricci
•We're an S-Corp, and most of our purchases were manufacturing equipment - not particularly energy-efficient or special category items. Mostly standard CNC machines, conveyor systems, and packaging equipment. I appreciate the suggestion though - will definitely keep an eye out for special categories in future purchases if they come with tax advantages!
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Amara Okonkwo
Don't forget to check if your state follows federal treatment of Section 179! This bit me really hard last year. Our state only allows $25,000 of Section 179 deduction regardless of the federal limit, and their carryforward rules are different too. We ended up with a huge state tax bill because our accountant assumed the state would treat the carryforwards the same way. Always good to double check both federal AND state rules for these big deduction items!
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Giovanni Marino
•omg THIS!! california nearly killed us with their weird section 179 rules! we had to redo our entire depreciation schedule for state purposes and it was a nightmare. definitely check your state rules!!
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James Johnson
Just wanted to add something that might help with your planning - since you're dealing with such a large carryforward amount, you might want to consider the timing of future equipment purchases carefully. We were in a similar situation two years ago and learned that you can actually elect OUT of Section 179 for specific assets in future years if it makes sense strategically. This way, if you have a lower equipment purchase year coming up, you could use your carryforward on those purchases while taking regular depreciation on any new equipment. Also, keep in mind that the Section 179 limits increase periodically for inflation adjustments. The $1,080,000 limit and $2,700,000 phase-out threshold you mentioned will likely be higher in future years, which could help you utilize more of that carryforward sooner than you think. One more thing - make sure you're tracking the carryforward amount properly on your books. We had to reconstruct our records when we realized we weren't maintaining the detailed asset-by-asset carryforward tracking that made year-end tax prep much more complicated than it needed to be.
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Ravi Patel
•This is really helpful advice about electing out of Section 179 for strategic purposes! I hadn't realized that was even an option. Can you clarify - when you elect out for specific assets, does that mean you're essentially choosing regular MACRS depreciation for those items instead? And is this something you decide asset-by-asset or do you have to make the election for your entire tax year? Also, your point about the inflation adjustments is encouraging. Do you happen to know how often they typically adjust these limits? It would be great to factor potential limit increases into our multi-year planning.
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Ahooker-Equator
This is such a comprehensive discussion! As someone who went through a similar situation with heavy equipment purchases last year, I wanted to share a few additional considerations that helped us navigate the carryforward complexity. First, don't overlook the business income limitation aspect - even if you get past the investment threshold in future years, your Section 179 deduction (including carryforwards) is still limited to your taxable business income. We found that planning around this limitation was just as important as tracking the investment ceiling. Second, consider the interplay with state taxes early in your planning. Some states conform to federal Section 179 rules, others don't, and some have their own unique limitations. This can create some interesting planning opportunities if your state has different rules. Finally, one thing that really helped us was creating a multi-year equipment purchase forecast. Since Section 179 carryforwards don't expire, we mapped out our expected equipment needs for the next 3-5 years and modeled different scenarios for when we could actually utilize the carryforward. This helped us make better decisions about financing timing and whether to accelerate or defer certain purchases. The good news is you haven't lost the deduction - it's just a matter of strategic timing to maximize its benefit!
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Logan Stewart
•This is excellent strategic advice! The business income limitation is something I've been worried about but hadn't fully factored into our planning yet. We had a strong year income-wise, but with the economic uncertainty, I'm not sure if we'll maintain the same level of taxable income to actually utilize the carryforward even when we get under the investment threshold. Your idea about creating a multi-year equipment forecast is brilliant - I'm definitely going to work on that. We're in a growth phase so our equipment needs are somewhat predictable, and it would be really helpful to see different scenarios mapped out over the next few years. Quick question on the state tax piece - we're in Texas, so no state income tax to worry about there. But for others reading this, how do you typically find out about your specific state's conformity rules? Is there a good resource, or do you just have to dig through each state's tax code? Thanks for the comprehensive insights - this whole thread has been incredibly helpful for thinking through all the moving pieces!
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