If you're deciding between an LLC and a C-corp for QSBS eligibility, the short answer is this: only C-corp stock can ever qualify for the Section 1202 exclusion, but starting as an LLC and converting later is a legitimate, sometimes better strategy if you get the timing right. Get the timing wrong and you can accidentally wipe out millions in future tax-free gains.
Most founders don't make this decision on purpose. Their lawyer defaults them into a Delaware C-corp because that's what the SAFE template assumes, or they start an LLC because a friend said it's simpler, and QSBS never comes up until an acquisition offer lands on the table years later.
What actually determines QSBS eligibility
QSBS, under Internal Revenue Code Section 1202, only applies to stock issued by a domestic C-corp. LLCs and S-corps are pass-through entities, so equity in them is never QSBS-eligible on its own, no matter how long you hold it.
That doesn't mean LLCs are off the table. If you form an LLC and later convert it to a C-corp using a check-the-box election on IRS Form 8832, the shares you receive at conversion can start qualifying for QSBS from that point forward. Time spent as an LLC before the conversion counts for nothing toward the five-year holding period.
The three-question test before you pick a structure
Run your situation through these three questions before you incorporate or convert.
- Will you actually have a liquidity event in five-plus years? QSBS only pays off if you hold qualifying stock for at least five years before a sale. If you're expecting a quick flip or you're not sure the company survives that long, the exclusion is theoretical, not a planning input.
- Will your gross assets stay under the threshold at the moment of conversion? Under the One Big Beautiful Bill Act, the gross-assets test cap rose to $75 million for stock acquired after July 4, 2025, up from $50 million. If a big seed or Series A round pushes you past that threshold before you convert, none of your shares become QSBS-eligible. Sequencing the round and the conversion matters more than the round size itself.
- Do you need pass-through losses in the next year or two? Early-stage companies often lose money, and losses only flow through to your personal return in an LLC or S-corp. If you elect S-corp status on an existing C-corp to capture those losses, you disqualify the stock for QSBS. This is the single most common way founders accidentally kill their own exclusion.
If you answer yes to all three, an LLC-to-C-corp conversion timed before your next material fundraise is usually the stronger play. If you answer no to any of them, the conversion complexity probably isn't worth it.
When starting as an LLC actually makes sense
An LLC makes sense when you expect a slow, bootstrapped build with real losses in year one or two that you want to use personally, and you don't expect to raise a priced round or sell the company within the next five to seven years. The pass-through losses have real value now, and QSBS is a bet on a future that's still uncertain.
It also makes sense if you're testing a business model and might shut it down or pivot into a different legal entity entirely. Converting an LLC that never earned anything costs you nothing you'd have used anyway.
When you should just incorporate as a C-corp from day one
If you already know you're raising venture money, QSBS clock timing gets simpler if you start the clock immediately rather than converting later and resetting it. Most VC-backed companies are Delaware C-corps from incorporation for exactly this reason, plus it avoids the conversion paperwork, the built-in-gain limitation, and the risk of mistiming the gross-assets test.
The one thing you give up is early-year pass-through losses. For a venture-scale company burning cash on payroll and infrastructure, most of those losses would be limited by basis rules anyway, so the trade-off is smaller than it looks.
The conversion mechanics, briefly
When an LLC converts to a C-corp, your stock basis resets to the fair market value of your ownership stake at the moment of conversion, not your original contribution. A higher basis at conversion increases your exclusion cap, since the limit is the greater of $15 million or ten times your basis for stock acquired after July 4, 2025.
But only appreciation that happens after conversion counts toward the exclusion. Any value the company built up while it was still an LLC is treated as built-in gain and doesn't get QSBS treatment. And the five-year holding period restarts at the conversion date, not your original founding date.
What to do this week
Pull up your cap table and your most recent valuation, then ask your accountant two things: what your gross assets would look like at today's valuation, and whether any planned raise would push you past the $75 million threshold before you'd want to convert. That single conversation determines whether this decision needs to happen now or can wait.
Frequently asked questions
Can an LLC ever issue QSBS directly?
No. QSBS can only be issued by a domestic C-corp. An LLC has to convert to a C-corp first, and only stock issued at or after that conversion can qualify.
Does time as an LLC count toward the five-year QSBS holding period?
No. The five-year clock starts on the date of conversion to a C-corp, not the date the LLC was formed.
What happens if I elect S-corp status after incorporating as a C-corp?
The stock loses QSBS eligibility. S-corps are pass-through entities and don't qualify under Section 1202, even if the company was originally a qualifying C-corp.
What is the QSBS gross-assets test threshold in 2026?
For stock acquired after July 4, 2025, the threshold is $75 million in gross assets at the time of stock issuance, up from $50 million under prior law.
Is the QSBS exclusion cap still $10 million?
For stock acquired after July 4, 2025, the cap increased to the greater of $15 million or ten times your basis in the stock, up from the prior $10 million figure.
Whichever structure you pick, put the decision on paper with your accountant now. A five-minute conversation before you incorporate is a lot cheaper than finding out at a term sheet that your gross assets crossed the line six months too early.