Section 1202 QSBS is one of the most powerful tax breaks in the U.S. tax code — and one of the most misunderstood. A qualifying founder can exit a company and pay $0 in federal capital gains taxes on up to $10M in gains. New York, however, refuses to fully play along.
New York State does not conform to the federal QSBS exclusion above 50%. That means NYC founders who believe they've engineered a tax-free exit are in for a rude awakening: full state and city income taxes on gains the IRS won't touch. I've seen this trip up founders at late-stage companies who planned an exit without modeling their NY tax liability. The federal savings are real and massive — but the NY exposure is equally real.
What Section 1202 Actually Does
Section 1202 of the Internal Revenue Code allows non-corporate taxpayers to exclude capital gains from the sale of Qualified Small Business Stock (QSBS) held for more than 5 years. The exclusion has evolved over three eras:
Pre-2010 (original)
~14% effective federal rate on gain
Feb 2009 – Sept 2010
~7% effective federal rate on gain
After Sept 27, 2010 (current)
$0 federal tax on qualifying gains
For shares issued after September 27, 2010 — which includes essentially every startup founded in the past 15 years — founders can exclude 100% of gains up to the greater of $10M or 10x their adjusted basis. For a founder who invested $500K in their own company, that's up to $5M excluded. For most institutional-grade exits, $10M is the ceiling per taxpayer.
At a 23.8% combined federal long-term capital gains rate (20% LTCG + 3.8% NIIT), a $10M gain that qualifies for 100% exclusion saves the founder $2.38M in federal taxes. That's not nothing.
Does New York Conform to Federal QSBS Section 1202?
No — not to the enhanced exclusion. New York decoupled from the expanded Section 1202 rules. Here is exactly what NY does and does not recognize:
50% federal exclusion (pre-2010)
✓ Conforms
75% federal exclusion (2009–2010)
✗ Does not conform
100% federal exclusion (post-2010)
✗ Does not conform
NY capital gains tax rate
Ordinary income (up to 8.82%)
Additionally, New York State does not have a preferential capital gains tax rate. Gains are taxed as ordinary income at the top rate of 10.9% (for income over $25M) or 8.82% for most high-income earners. NYC residents add 3.876% on top. Combined NY+NYC marginal rate on QSBS gains: up to 14.776%.
The Real Dollar Impact: NY vs. No-State-Tax Founders
Let's model what a $10M QSBS gain actually costs depending on where you live:
Florida / Texas (no income tax)
$0 total tax
100% federal + no state = full exclusion
California
$1,330,000 total tax
CA taxes QSBS at 13.3% — full gain, no exclusion
New York (no NYC)
$882,000 total tax
8.82% on $10M gain
New York City
$1,269,600 total tax
8.82% state + 3.876% NYC city on $10M
The difference between a founder in Miami and a founder in Brooklyn on the same $10M QSBS exit: $1.27M. That's the cost of living in New York City. Every founder should understand this number before they structure their cap table, before they plan their exit, and certainly before they consider relocating.
You can explore these scenarios interactively on the NY QSBS Calculator at Value Add VC, which models federal vs. state tax liability across different gain sizes and residency situations.
How to Qualify for QSBS (The Checklist)
Most founders don't realize they already have a QSBS problem — or a QSBS opportunity — at the moment they incorporate. Here are the requirements:
C-corporation structure
LLCs, S-corps, and partnerships do not qualify. You must be a C-corp at the time of share issuance.
Gross assets under $50M
The company's aggregate gross assets must be under $50M at the time of original issuance and immediately after. Most seed-stage companies qualify easily.
Qualified trade or business
Excluded industries: professional services (law, medicine, consulting), financial services, hospitality, farming, mining. SaaS, biotech, hardware, and most tech companies qualify.
Original issuance only
Shares must be acquired at original issuance — not on the secondary market. IPO purchases and secondary transfers don't qualify.
5-year holding period
Shares must be held for more than 5 years before the qualifying sale. The clock starts at the date of issuance, not a vesting date.
Non-corporate taxpayer
The 100% exclusion applies to individuals, trusts, and partnerships — not C-corps or S-corps as investors.
Strategies NY Founders Actually Use
In my experience talking to founders in this situation, there are a few real strategies — and some that only look good on paper:
Strategies That Work
- Genuine domicile change — Moving to Florida or Texas before exit. Must be a real move (183+ days, change primary residence, update driver's license). Timing matters — NYC audits aggressively.
- QSBS stacking via gifting — Gift shares to a spouse or irrevocable trust in a no-tax state. Each recipient gets their own $10M federal exclusion. Doesn't solve NY tax for NY residents.
- Charitable gifting of QSBS — Donate appreciated QSBS to a DAF before the 5-year mark and get a full fair market value deduction. No capital gains on donated shares.
Strategies That Backfire
- Paper address moves — Claiming Florida residency while still working from NYC. NY audits departure aggressively and can claw back multiple years of income.
- Converting to LLC before exit — Converting a C-corp to an LLC kills QSBS status. Don't do it before a qualifying sale.
- Waiting too long to plan — QSBS planning must happen early. Options like rollovers under Section 1045 or charitable strategies have timing requirements that can't be executed reactively.
The federal government is giving you a $2.38M gift on a $10M exit.
New York is taking $1.27M of it back. Know the number before you negotiate the deal.
Model your own QSBS tax liability with the NY QSBS Calculator at Value Add VC. This post is educational, not tax advice — consult a qualified tax attorney before making decisions based on Section 1202 planning.