Plan your Brex ISO exercise
Calculator · free · no signup · pre-IPOBrex is pre-IPO. Plan your AMT impact at any valuation: current 409A, expected IPO price, or post-IPO scenarios.
Beta · invite-only · AlphaLatitude Inc. · Free Tools
Your grant
Seeded from secondary-market data, as of Jun 16, 2026
Tax inputs
Grant timeline
Net final value at year 3 sale — optimized plan
$58,917
After-tax dollars at end of year 3, net of all federal + state taxes through the sale.
This year: exercise 3,334 shares (of 10,000 total).
= gross gain at sale − federal + state LTCG − AMT premium above baseline regular tax (time-valued)
AMT premium for exercising: $0 (on top of $228,434 regular tax across the horizon)
Optimized plan keeps $206 more than lump-sum.
Federal AMT crossover this year: 7,916 shares ($57,238 bargain element). Above that, each additional share this year adds federal AMT.
Estimates only. Not financial advice.
Net final value by year
Running tally: NTV from shares exercised through year y, minus AMT premium paid through year y. The last year matches the plan's headline NTV. Hover a year for plan totals.
Optimized exercise schedule
You pay the higher of Regular tax and Tentative AMT per jurisdiction, then subtract Credit recovered. The result is Net tax. Hover any number for the bracket-by-bracket breakdown.
| 1No AMT | 3,334 | |||
| 2No AMT | 3,333 | |||
| 3No AMT | 3,333 |
Federal AMT credit
Earned
$0
Recovered
$0
Remaining
$0
Plan comparison
Net value at the end of your hold horizon.
Lump-sum
All in Year 1
$58,711
−$206
Even split
Equal shares each year
$58,917
Optimized
Tax-aware schedule
$58,917
Highest
Estimates only. Excludes disqualifying dispositions, NSOs, multi-state moves, and AMT preferences other than ISO bargain elements. Long-term capital gains tax assumes a qualifying disposition (ISO held ≥1 yr from exercise and ≥2 yr from grant); state LTCG follows ordinary brackets except where the state grants preferential treatment (HI, ND, SC, WI, AR, NM) or has a dedicated LTCG-only tax (WA). Assumes you are within the $100K ISO limit (any portion of an annual ISO grant whose FMV at grant exceeds $100K is treated as NSO from the start, §422(d)). State AMT figures are 2025 (next-year values published in late 2026). Not financial advice.
QSBS note. If your shares qualify (typically pre-IPO C-corp grants held 5+ years), a federal rule lets you exclude up to $10M of gain on a future sale from federal tax. That single rule shifts exercise-timing math more than AMT does. (This is §1202 “qualified small-business stock”.) Modeled in beta, not here.
You optimized one grant in isolation. The beta optimizes ISOs alongside your RSUs, NSOs, and stock in one plan.
Request beta access →About Brex
Brex is a privately held Fintech company, incorporated in Delaware and headquartered in San Francisco, CA.
Last reported secondary-market price: $12.23 per share (as of 2026-06-16). Your own 409A may differ.
Capital One acquisition pending.
Equity grants at Brex typically include incentive stock options (ISOs) and non-qualified stock options (NSOs).
Brex, a subsidiary of Capital One, is an American fintech company that offers credit cards and cash management accounts as well as a spend management software platform to startup technology companies.
Source: Wikipedia (CC BY-SA 4.0)
Henrique Dubugras and Pedro Franceschi (Brazilian ex-Pagar.me founders) launched Brex in 2017 through Y Combinator, building corporate cards, expense management, and business banking for startups. After peaking at a $12.3B valuation in 2022, the distributed Delaware C-corp endured 11% layoffs that October and a 20% cut in January 2024 before refocusing on enterprise (Q1 2025 enterprise revenue grew 70%, NRR exceeded 130%, customers include OpenAI, DoorDash, Airbnb). Brex hit operating-cash-flow positive in October 2025 and shipped its Agent Mesh and Brex Assistant for autonomous finance workflows. Capital One agreed in January 2026 to acquire Brex for $5.15B, closing April 7, 2026.
Sources: en.wikipedia.org · paymentsdive.com · venturebeat.com
Equity comp at Brex
- Brex RSU grants require both a time-based service condition and an event-based liquidity condition (an IPO or acquisition). Employees who leave before the liquidity event forfeit all RSUs that have not yet satisfied the event trigger, even if the time-based vesting is complete. This structure is stricter than some double-trigger designs: the event trigger has no carve-out that accelerates vesting upon separation, so exiting before an IPO or change of control means forfeiting all equity that has not yet settled.
Sources: brex.com
Researched 2026-05-10.
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by Brex.
The calculator works at any Brex valuation: enter your strike, the current 409A FMV, an expected IPO price, or anywhere in between. AMT is triggered on the bargain element (FMV minus strike) when you exercise; the calculator models federal AMT, state AMT, and the multi-year credit-recovery path.
Example: at Brex's last reported price of $12.23, exercising 5,000 ISOs with a $3.67 strike creates a $42,800 bargain element. Above the 2026 federal AMT exemption ($88,100 single, $137,000 married joint), the 28% AMT rate adds roughly $11,984 on top of regular tax before any state AMT (CA, CO, CT, MN). The credit recovers in later years when your regular tax exceeds AMT. The calculator above runs your exact figures.
All Brex tools → · Use the generic AMT + ISO Exercise Calculator for any company.
Brex equity questions
- How much alternative minimum tax (AMT) will I owe exercising Brex ISOs?
- Exercising incentive stock options (ISOs) does not create regular income tax, but the bargain element (the fair market value at exercise minus your strike price) counts toward the alternative minimum tax (AMT). The amount depends on the bargain element, your other income, your filing status, and your state. The calculator above models federal and state AMT, the AMT crossover point, and how the credit recovers in later years for your exact Brex figures.
- Does Brex grant ISOs, NSOs, or RSUs?
- Equity compensation at Brex typically takes the form of incentive stock options (ISOs) and non-qualified stock options (NSOs). Incentive stock options can trigger the alternative minimum tax (AMT) when you exercise.
- Are Brex shares eligible for QSBS?
- They might be. Qualified small business stock (QSBS) under Internal Revenue Code Section 1202 can exclude federal tax on much of the gain when shares were acquired at original issuance from a C-corporation while its gross assets were under $50 million, and held at least five years. Whether your Brex shares qualify turns on when you acquired them and the company's asset size at that time.
One piece of the puzzle.
OptionsAhoy plans your Brex equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.