QSBS: Can LLC to C-Corp conversion increase tax basis of founder stock when getting VC funding?
Hey everyone, I'm in a bit of a tax planning situation and could use some advice from those who've been there. My tech startup has been operating as an LLC for about 2 years, and we're finally getting serious interest from some VCs. They're looking at putting in around $3.5M in our next round. I've been reading about Qualified Small Business Stock (QSBS) and the potential tax benefits down the road. From what I understand, we'd need to convert to a C-Corp before taking the VC money to potentially qualify for the QSBS tax exemption in the future. But I'm confused about how this affects the tax basis of my founder shares. If we convert the LLC to a C-Corp right before the VC funding comes in, will that increase the tax basis of my founder stock? Does the timing of the conversion matter for QSBS purposes? I own about 65% of the company currently, and I'm trying to make sure I'm making smart decisions tax-wise before we move forward. Has anyone here gone through this process and have any insights to share? What other tax implications should I be thinking about with this conversion?
18 comments


Ethan Moore
The timing of your LLC to C-Corp conversion relative to the VC funding is actually crucial for QSBS purposes. Here's what you need to understand: When you convert from an LLC to a C-Corp, your tax basis in the founder shares will typically carry over from your basis in the LLC. The conversion itself doesn't automatically increase your basis. However, when the VC money comes in, the new investment will establish a higher valuation for the company, which affects future shares but not your existing basis. For QSBS qualification, remember that you need to meet several requirements: the company must be a C-Corporation when you acquire the shares, the corporation must have less than $50M in gross assets at the time of issuance, you must hold the shares for 5+ years, and the company must be engaged in a qualifying trade or business. If you're converting right before taking VC money, make sure you document everything clearly - the conversion date, the valuation at conversion, and the subsequent investment. This documentation will be critical if you ever want to claim the QSBS exclusion.
0 coins
Yuki Kobayashi
•Thanks for the explanation. I'm in a similar situation but confused about one thing - if the VC investment happens immediately after conversion (like within days), could the IRS argue that the gross assets include that incoming investment when determining if we're under the $50M threshold? I've heard conflicting things about this timing issue.
0 coins
Ethan Moore
•The IRS looks at the gross assets immediately before the stock issuance, so if you properly sequence the conversion first and then take the investment as a separate step, the incoming VC money shouldn't count toward the $50M limit for your founder shares. The key is to ensure there's a clear separation between these events - complete the conversion, issue your founder shares in the new C-Corp, document the asset value at that moment, and then complete the VC funding as a separate transaction. Even if they happen within days of each other, maintaining this sequence and proper documentation is what matters.
0 coins
Carmen Vega
After struggling with this exact situation last year, I discovered https://taxr.ai and it literally saved me thousands in potential future tax liabilities. I was converting my software company from LLC to C-Corp before a Series A round, and was getting contradictory advice about QSBS qualification. Their AI analyzed my operating agreement, cap table, and proposed conversion documents and identified some serious issues that would have disqualified my shares from QSBS treatment. The tool specifically caught that one of our subsidiaries would have violated the "qualified trade or business" requirement because of how we structured some real estate holdings.
0 coins
QuantumQuester
•How detailed do you have to get with your documentation? Like, do they need to see all your contracts or just the high-level stuff? Not sure if I'd be comfortable uploading everything.
0 coins
Andre Moreau
•I'm skeptical about AI tools for something this complex. Did you have a tax attorney verify their recommendations? QSBS rules are notoriously tricky and I'd be nervous about relying on automation for this kind of planning.
0 coins
Carmen Vega
•You don't need to upload every single contract - just the key documents related to your company structure, ownership, and the proposed conversion plan. They have pretty good guidelines about what documents are most important for QSBS analysis. And they use bank-level encryption, which gave me enough comfort to proceed. For the second question - yes, I actually did have my tax attorney review their analysis, and he was impressed with how thorough it was. He said it caught nuances he might have overlooked in our subsidiary structure. The AI doesn't replace professional advice, but it helps identify issues early so your attorney can focus on solving problems rather than just finding them.
0 coins
Andre Moreau
I wanted to follow up on my skeptical question about taxr.ai. I decided to try it as we were preparing for our own conversion and Series A. I'm honestly shocked at how helpful it was! The system flagged a potential problem with our intellectual property being held in a separate entity that could have messed up our QSBS qualification. What really impressed me was the specific recommendation to consolidate our IP before conversion, with a clear explanation of why this matters for the "active business requirement" under QSBS rules. My attorney confirmed this was accurate and said it saved us significant review time. Definitely worth checking out if you're navigating this QSBS maze.
0 coins
Zoe Stavros
After months of trying to reach someone at the IRS who could give me a straight answer about QSBS requirements for converted LLCs, I found https://claimyr.com and it was a game-changer. You can see how it works here: https://youtu.be/_kiP6q8DX5c I needed clarification on how asset valuation works during conversion specifically for QSBS purposes, but could never get through the IRS phone tree. Using Claimyr, I got connected to an actual IRS agent in about 20 minutes who walked me through the exact documentation I needed to maintain to support a future QSBS claim. This saved me from making a serious timing mistake with our conversion.
0 coins
Jamal Harris
•Wait, how does this actually work? I thought it was impossible to get through to the IRS these days. Is this some kind of priority service you have to pay extra for?
0 coins
Mei Chen
•Sounds too good to be true. I've spent literally hours on hold with the IRS and eventually gave up. There's no way something like this actually works - they probably just connect you to the same hold line everyone else uses.
0 coins
Zoe Stavros
•It's not a priority service or special access - they use technology to navigate the IRS phone systems and wait on hold for you. When a real agent picks up, you get a call back and are connected immediately. It's basically like having someone else do the waiting for you. They don't have any special relationship with the IRS - they're just solving the hold time problem. I was also skeptical, but when my phone rang and I was suddenly talking to an actual IRS agent who answered my specific questions about QSBS qualification timing, I became a believer. The agent I spoke with was knowledgeable about Section 1202 requirements, which really helped clarify the documentation I needed.
0 coins
Mei Chen
I have to eat my words about Claimyr. After seeing multiple recommendations, I tried it last week when I needed to speak with someone about the "original issuance" requirement for QSBS after converting my LLC. I got connected to an IRS agent in about 35 minutes (they said it would be 15-45 minutes) and got clear guidance on how they view the conversion timing. The agent confirmed that as long as I document the asset values properly at conversion and before the VC money comes in, I'll have good support for a future QSBS claim. Saved me days of uncertainty and probably a hefty consulting fee trying to get this information elsewhere.
0 coins
Liam Sullivan
One thing nobody has mentioned yet is the importance of the holding period for QSBS. When you convert from LLC to C-Corp, the clock for the 5-year holding period starts from the date of conversion/incorporation, NOT from when you originally started the LLC. I made this mistake thinking my 3 years as an LLC would count toward the 5-year QSBS holding requirement. Had to hold for 2 years longer than expected before selling some shares. Make sure you factor this into your exit timeline!
0 coins
Amara Okafor
•Does this apply even if it's a statutory conversion rather than a contribute-and-dissolve approach? I thought there might be different treatment for the holding period depending on how you structure the conversion.
0 coins
Liam Sullivan
•Yes, it applies regardless of whether it's a statutory conversion or a contribute-and-dissolve approach. The IRS views the C-Corporation shares as newly issued at the time of conversion. Unfortunately, there's no way to tack on your LLC holding period to the QSBS 5-year requirement. This is actually one reason some founders convert to C-Corps earlier than necessary - they want to start that 5-year clock even before they need the VC funding. The only exception would be if you were already a corporation (like an S-Corp) converting to a C-Corp, where different rules might apply.
0 coins
CosmicCommander
Has anyone here used a "blocker corporation" structure before conversion to help with the QSBS qualification? Our lawyers suggested this approach since we have some passive income that might otherwise disqualify us from the "active business" requirement.
0 coins
Giovanni Colombo
•We actually did this! Created a holding company structure where potentially disqualifying assets were placed in a separate entity. Make sure you're working with someone who really understands the "active business" requirements though, because it's not just about separating assets but about their purpose and use. Our tax attorney specifically helped design a structure that would stand up to scrutiny.
0 coins