Pre-IPO stock option tax planning for a founder is a set of decisions with separate deadlines. Start when the 409A valuation begins to climb or about 18 months before an expected liquidity event, whichever comes first. Then work in order:
- Inventory every grant by instrument.
- Confirm QSBS eligibility as of each issuance date.
- Model the AMT on any ISO exercise against the cash you have.
- Only then decide when to exercise.
Most pre-IPO advice is written for an employee with a single grant. A founder usually holds three instruments at once, each with its own clock and its own election:
- Founder stock bought at formation
- Incentive stock options (ISOs)
- Nonqualified stock options (NSOs)
When should a founder start pre-IPO tax planning?
Start when the 409A begins climbing, or about 18 months before an expected liquidity event, whichever comes first. From that point two numbers move against you:
- The spread you would recognize on an exercise
- The time left to complete a holding period
Some windows close for good.
- QSBS: the Section 1202 holding period runs from the date you acquire the stock, and even the shortest partial exclusion for newer stock takes three years. A QSBS clock that has not started 18 months out will not reach any exclusion by the time you expect to sell, unless you plan to hold well past the IPO.
- AMT: the AMT cost of an ISO exercise also rises with every 409A step-up, so the same exercise carries less AMT before the next 409A increase than after it.
Other decisions stay open longer than founders assume. You can still stage exercises across tax years, and you choose when to sell after the lockup, within the company’s trading windows.
Which of your options still count as ISOs?
Check the grant-date value of each award before treating any of it as an ISO.
Under IRC 422(d), once the aggregate fair market value of stock first exercisable in a calendar year “exceeds $100,000, such options shall be treated as options which are not incentive stock options.” Treasury Regulation 1.422-4 measures that value as of the grant date and counts options in the order they were granted.
That portion works differently at exercise. Per IRS Publication 525, when you exercise an NSO “you must include in your income the FMV of the stock minus the exercise price.” That is ordinary compensation income, with withholding, in the year you exercise.
Founder stock bought at formation sits outside these rules: it is restricted stock under Section 83, with its own 83(b) election and a capital gains clock that can start at purchase.
How are ISOs taxed if you exercise before the IPO?
Exercising a qualifying ISO produces no regular taxable income. Section 421(a) provides for that, and Publication 525 puts it plainly: “When you exercise an ISO, you don’t include any amount in your income.”
The alternative minimum tax is the exception. Section 56(b)(3) turns off Section 421 for AMT purposes, so the spread at exercise becomes an AMT adjustment.
- The spread: for a private company, that spread is the most recent 409A value minus your exercise price.
- The strike: Treasury Regulation 1.409A-1(b)(5) requires the exercise price to be at least fair market value on the grant date, and treats an independent appraisal from the previous 12 months as presumptively reasonable.
Two clocks then run separately:
- The ISO qualifying period in Section 422(a)(1), two years from grant and one year from exercise, decides whether a later sale gets ISO treatment.
- The capital gains holding period decides long-term versus short-term rates.
For vested shares, both start at exercise. For unvested shares you exercised early, the capital gains clock waits for vesting even with an 83(b) election on file, because on ISO shares that election counts for AMT only.
What happens to your stock options at the IPO?
Vested options survive the offering, but you cannot sell at the opening bell.
- Lockup: Investor.gov notes that lockup terms vary, but “most prevent insiders from selling their shares for 180 days.”
- Trading windows: after the lockup, the company’s insider trading policy usually limits you to open windows after each quarterly earnings release, unless you sell through a pre-arranged Rule 10b5-1 plan.
Once the lockup lifts, a cashless or same-day sale is the common choice because it needs no cash up front. The tax result depends on the instrument:
- ISO shares sold that early are a disqualifying disposition. Per Publication 525, “If you sell or dispose of the stock before you meet the requirements, it’s a disqualifying disposition.” The spread at exercise becomes ordinary income, generally capped at your actual gain, and only the gain above it is capital gain.
- NSO shares already produced ordinary compensation income on the spread at exercise, so a same-day sale adds little further gain or loss.
Does QSBS apply to your pre-IPO shares?
Possibly, and most of the answer was settled on the day each block of stock was issued. Section 1202 requires:
- C corporation stock acquired at original issue
- From an issuer whose aggregate gross assets stayed under the threshold before and immediately after the issuance
- Held for the required period
An IPO does not end eligibility, but the issuance-date tests cannot be repaired later.
The figures depend on when you acquired the shares:
- Acquired after July 4, 2025: can earn a 50%, 75%, or 100% exclusion after three, four, or five years, with a $15 million per-issuer cap and a $75 million gross assets threshold.
- Acquired on or before that date: keeps the five-year rule, the $10 million cap, and the $50 million threshold.
The QSBS eligibility guide covers the active-business test and the 10-times-basis alternative cap.
Each option exercise is also its own acquisition, so shares you exercise this year start a new clock under the post-July 2025 rules.
Your pre-IPO checklist, in order
The order matters more than the list, because the QSBS answer can change whether an exercise is worth making at all.
- Inventory every grant by instrument and date. Pull the grant agreements and the 409A history. You need grant dates, exercise prices, vesting status, and which awards are ISOs and which are NSOs after applying the $100,000 limit.
- Confirm QSBS eligibility at issuance. For each block of stock, establish whether it met the original-issue and gross-assets tests when issued, and which side of the July 4, 2025 cutoff it falls on.
- Model AMT against available cash. Run the spread on any ISO exercise you are considering against a full-year income projection, then compare the exercise cost and projected tax with cash you can afford to lose.
- Decide exercise timing. Only now can you answer the staging question, across tax years or after the IPO, using the results of steps 2 and 3.
When the sale itself gets close, the liquidity event checklist covers reserving tax cash and reconciling your stock records.
What Nino does for a founder before an IPO
Each step feeds the next. Split them between a filing-season CPA and a separate investment advisor, and step 3 often goes undone.
Nino’s Advisor plans give you a human CPA and financial planner:
- You enter each grant in Nino’s grant form.
- The CPA prepares your return, which is not filed until you approve it.
- Advisor plans start from $300/mo, billed annually, a flat fee instead of a percentage of assets, with federal and state filing included.
See planning for founders and pricing.
Book a free consultation before your next 409A update or exercise decision. Every Advisor plan includes a 30-day money-back guarantee.