A filing I made in year one determined my tax bill in year six
The sale itself was easy. The tax return that followed was where the real work was.
Founder-turned-angel, exercised early
Illustrative composite. A representative scenario built from how angel secondaries commonly play out — realistic numbers, written in the first person, not the record of a specific named person or company.
Deal snapshot
- Side
- Selling
- Sector
- Edtech
- Stage at entry
- Seed, early-exercised options
- Original check
- $18,000 (exercise cost)
- Hold before sale
- 6 years
- Sold at
- Flat vs. last round
- Tax treatment
- Long-term capital gains
A decision from year one, paying off in year six
I early-exercised my options the month I got them and filed an 83(b) election within the required 30 days — a small, easy-to-forget bit of paperwork that starts your capital-gains holding period at exercise rather than at vesting.
Six years later, when I sold a chunk of that position on the secondary market, the entire gain qualified for long-term capital gains treatment because of that one filing. A colleague who exercised late and skipped the election, on a similar-sized position, paid meaningfully more in tax on a comparable sale.
What actually happened at sale
The sale mechanics were routine — direct buyer, standard discount, normal ROFR waiver. The complexity was entirely on the tax side: my accountant needed the original 83(b) filing, my exercise price, and the sale price to compute the gain correctly, and I had to dig through six-year-old email to find the confirmation.
What I tell other angels who exercise early
File the 83(b) within the 30-day window — there's no extension — and then keep the confirmation somewhere you'll actually find it years later, not just your inbox. It's a five-minute filing that can be the difference between short- and long-term capital gains treatment on a sale you won't make for years.
What to take from this
- If you early-exercise options, file the 83(b) election within the strict 30-day window.
- Keep the 83(b) confirmation somewhere durable — you may need it years later at sale.
- Tax treatment on a secondary sale can matter more than the discount itself; loop in an accountant before you sign.
Every angel who has held a position long enough eventually faces a version of this decision. For the mechanics behind stories like this one, see the guide to how secondaries work.