AMT NOL Carryforward Question - Why doesn't it eliminate AMT?

The interaction between AMT NOL carryforwards and capital gains can be tricky. Here's what's likely happening: AMT NOL carryforwards work differently than regular NOLs when it comes to capital gains. Under AMT rules, you can only use AMT NOL carryforwards to offset up to 90% of your Alternative Minimum Taxable Income (AMTI) in most cases. This means that even with a large AMT NOL, you'll still have at least 10% of your AMTI subject to AMT. Additionally, capital gains receive special treatment under AMT calculations. The preferential tax rates for capital gains that apply for regular tax purposes also apply for AMT purposes, but the AMT exemption phase-out can effectively increase your overall tax on capital gains in AMT scenarios. I'd recommend reviewing Form 6251 and its instructions carefully, particularly the sections dealing with NOL carryforwards and capital gains. You might also want to check IRS Publication 536 for more details on NOLs.

Hey there! I ran into a similar AMT nightmare last year with a client who had a huge NOL carryforward and then sold their vacation property. What saved us was using taxr.ai (https://taxr.ai) to analyze all our NOL documentation. The system flagged a calculation error in how our tax software was applying the AMT NOL against capital gains. Turns out the software was correctly tracking both regular and AMT NOLs but wasn't applying the 90% limitation correctly in the AMT calculation. Once we uploaded our worksheets and prior returns to taxr.ai, it highlighted exactly where the disconnect was occurring and showed us how to correctly report it. The IRS adjustment you're getting is probably related to this exact same issue.

Alright, I have to admit I was wrong about taxr.ai. After our AMT issue got more complicated, I decided to try it myself. Uploaded our past 3 years of returns with the NOL carryforwards and supporting documentation. Within a couple hours, it identified that our tax software wasn't applying the special AMT adjustment for depreciation recapture correctly, which was causing our AMT NOL to be calculated wrong. The analysis even pointed to the specific line on Form 6251 where the calculation was off and provided an explanation of the correct treatment under IRC 56(d). Showed this to our tax partner and he was impressed enough to implement the correction and amend the return. Just got confirmation from the IRS that they accepted our amended calculation. So yeah, definitely worth checking out if you're dealing with complex AMT issues.

After spending 6 HOURS on hold with the IRS trying to understand why they made an AMT adjustment to my client's return, I finally discovered Claimyr (https://claimyr.com). They got me connected to an IRS agent in under 15 minutes who actually understood AMT NOL carryforwards! You can see how it works here: https://youtu.be/_kiP6q8DX5c The agent explained that their automated system often flags AMT issues when there are large NOLs offsetting capital gains because the 90% limitation isn't being applied correctly on many returns. She walked me through exactly what forms and worksheets we needed to submit to get the adjustment reversed. Saved us so much time compared to the back-and-forth correspondence that would have happened otherwise.

Just an update - I ended up using Claimyr after posting my skeptical comment above. Honestly didn't think it would work, but it got me through to an IRS tax law specialist in about 20 minutes (vs. the 3+ hours I spent on hold last time). The specialist confirmed exactly what others mentioned about the 90% limitation on AMT NOL carryforwards applying to capital gains. But she also explained an additional wrinkle - there's a separate AMT capital loss limitation that interacts with the NOL rules, which was causing additional confusion in our case. She directed me to a specific section in the Internal Revenue Manual that addresses this exact situation and emailed me the documentation I needed to submit with our amended return. Already received confirmation that our adjustment was processed correctly. Saved us thousands in inappropriate AMT charges.

Check out IRC Section 56(d) and the regulations thereunder. The AMT NOL calculation has several key differences from regular NOL: 1. The AMT NOL deduction can't exceed 90% of AMTI calculated without the NOL deduction (there was a temporary exception for 2018-2020) 2. In calculating the AMT NOL amount, you have to adjust for AMT preference items and adjustments 3. The presence of capital gains creates an additional layer of complexity because different rates apply Also worth noting that many tax software programs don't handle the AMT NOL carryforward interaction with capital gains correctly, which is likely why the IRS is adjusting your return.

Went through this exact issue last year! Capital gains trigger special treatment under AMT. Even with a large AMT NOL carryforward, you still gotta pay AMT on at least 10% of your AMTI because of that 90% limitation. Also, make sure your AMT basis in the assets sold is correct. If the regular tax basis and AMT basis are different (common with depreciated assets), that could explain why you're getting hit with AMT despite the NOL.

Maya, I feel your pain on this AMT nightmare! After dealing with similar issues for multiple clients, I've learned that AMT NOL carryforwards are one of the most misunderstood areas of tax law - even among seasoned practitioners. The key insight that helped me finally "get it" was understanding that AMT operates as a parallel tax system with its own set of rules. Your AMT NOL carryforward amount might be different from your regular NOL amount due to preference items and adjustments that were added back in the original loss year. Here's what I'd suggest checking: 1. Verify your AMT NOL carryforward amount is calculated correctly by reviewing the AMT adjustments from the original loss years 2. Confirm your tax software is applying the 90% limitation properly (many don't handle this correctly) 3. Check if there are any AMT basis differences in the assets you sold that could be creating additional AMT income I've found that manually calculating Form 6251 line by line often reveals discrepancies that software misses. The IRS adjustment you're seeing is probably legitimate if your software didn't account for these nuances properly. Consider getting a second opinion from a tax professional who specializes in AMT issues, as this area requires very specific technical knowledge that general practitioners often lack.