Supermicro (SMCI) RSU sell-vs-hold
Calculator · free · no signup · SMCISell at vest or hold? Compare after-tax payout from selling Supermicro RSUs at vest vs. holding through the LTCG cliff at 12 months.
Beta · invite-only · AlphaLatitude Inc. · Free Tools
Your vest
Tax inputs
Hold strategy
Best after-tax payout — at year 1 yr
$47,709
Sell + invest wins by $4,981 over Hold 1 yr.
Estimates only. Not financial advice.
Heads-up: under-withholding. Your employer withholds federal tax at the IRS supplemental rate (22.0% on this vest, ≈ $17,600). Your marginal federal rate on this vest is 32.7%, owing $26,171. Expect to settle the $8,571 gap at tax time.
The hidden purchase
Tax was paid at vest either way. Holding is mathematically equivalent to taking $44,509 in after-tax cash and buying $44,509 of SMCI today.
Most diversification frameworks would advise against a purchase that size in a single name; the right answer depends on your conviction in SMCI. Holding past one year converts the gain to LTCG.
Sell + invest
Best payout| Vest value (shares × price) | $80,000 |
| Federal | |
| State | |
| Medicare | −$1,160 |
| Additional Medicare | −$720 |
| Market gain over 1 yr at 10.0% | $4,451 |
| Cap-gain tax on diversified gain — LTCG (federal + state + NIIT) | −$1,251 |
| Net at year 1 yr | $47,709 |
Sell every share at vest; invest the after-tax cash at the market return for 1 yr, then liquidate. Diversified — no single-stock concentration risk.
Hold 1 yr
| Vest value (shares × price) | $80,000 |
| Vest tax (federal + state + FICA) | |
| Net at year 1 yr | $42,728 |
Sold 444 shares to cover vest tax (net-settled); kept 556 shares 1 yr to qualify for long-term capital gains.
Social Security + Medicare are payroll taxes (collectively called FICA) — they apply because you're still employed at vest.
Both columns are stated in year-1 yr dollars. The sell side compounds at the market return; the hold side compounds at your single-stock expected return after a 20% volatility drag.
Estimates only. Assumes net-settled (sell-to-cover) vesting; double-trigger and pre-IPO RSUs are out of scope. Excludes multi-state moves, AMT interactions on other equity, and 83(b) elections. Not financial advice.
You evaluated one RSU vest. The beta plans every vest of every grant across years, with concentration and AMT in the loop.
Request beta access →Related calculators: RSU Lot Order Calculator · Stock Concentration Calculator
About Supermicro
Supermicro (SMCI) is a public Hardware company, incorporated in California and headquartered in San Jose, CA.
Equity grants at Supermicro typically include restricted stock units (RSUs).
Super Micro Computer, Inc., doing business as Supermicro, is an American information technology company based in San Jose, California. The company is one of the largest producers of high-performance and high-efficiency servers, while also providing server management software, and storage systems for various markets, including enterprise data centers, cloud computing, artificial intelligence, 5G, and edge computing. Supermicro was founded in 1993, and has manufacturing operations in Silicon Valley, the Netherlands, and in Taiwan at its Science and Technology Park.
Source: Wikipedia (CC BY-SA 4.0)
Charles Liang founded the company in San Jose in 1993, and its distinguishing choice was building block architecture: modular server designs assembled to order, which let it ship configurations for new chips faster than larger rivals. That speed made it a primary supplier of GPU servers during the AI buildout, and revenue multiplied. A short-seller report, a delayed annual filing, and an auditor resignation in 2024 triggered a Nasdaq compliance process that the company resolved in 2025 after appointing a new auditor and completing its filings.
Sources: supermicro.com · en.wikipedia.org
Equity comp at Supermicro
- RSUs use single-trigger vesting: shares become yours as each portion vests on schedule, and the value is taxed as ordinary income at that point. No IPO or acquisition is required.
Researched 2026-08-17.
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by Supermicro.
Supermicro (SMCI) RSUs vest as ordinary income at the price on vest day. The decision is whether to sell at vest and reinvest, or hold the shares through the 12-month LTCG cliff. This calculator runs both paths through the same after-tax math so you can compare like-for-like.
All Supermicro tools → · Use the generic RSU Sell-vs-Hold Calculator for any company. Diversifying multiple RSU lots? See the lot-by-lot sell order →
Supermicro equity questions
- Should I sell or hold my Supermicro RSUs at vest?
- Supermicro restricted stock units (RSUs) are taxed as ordinary income on their value at vest whether or not you sell. The only open decision is what to do with the shares afterward: sell at vest and reinvest, or hold past twelve months for long-term capital-gains treatment on any further gain. The calculator above runs both paths through the same after-tax math so you can compare them directly.
- Does Supermicro grant ISOs, NSOs, or RSUs?
- Equity compensation at Supermicro typically takes the form of restricted stock units (RSUs). Restricted stock units are taxed as ordinary income when they vest.
- Do Supermicro RSUs use double-trigger vesting?
- No. Supermicro restricted stock units (RSUs) use single-trigger vesting: each tranche becomes yours as it vests on schedule, taxed as ordinary income at that point, with no liquidity event required.
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