MongoDB (MDB) NSO Exercise Calculator
Calculator · free · no signup · MDBPlan your MongoDB NSO exercise (federal, state, FICA) and compare sell-vs-hold for long-term capital gains.
Beta · invite-only · AlphaLatitude Inc. · Free Tools
Your grant
Tax inputs
Hold strategy
Best after-tax payout — at year 1
$199,080
Sell + invest wins by $20,783 over Hold 1 yr.
Estimates only. Not financial advice.
Sell + invest
Best payout| Bargain element (sale − strike) | $350,000 |
| Federal | |
| State | |
| Medicare | −$5,075 |
| Additional Medicare | −$3,150 |
| Market gain over 1 yr at 10.0% | $18,573 |
| LTCG on diversified gain (fed + state + NIIT) | −$5,219 |
| Net at year 1 | $199,080 |
Sell every share immediately; invest the after-tax cash at the market return for 1 yr, then liquidate. Diversified — no single-stock concentration risk.
Exercise + hold 1 yr
| Sale proceeds (year 1) | |
| LTCG tax (federal + state + NIIT) | $0 |
| Net at year 1 | $178,297 |
Sold 2,678 shares at exercise to cover strike + tax; 2,322 shares held 1 yr for LTCG.
Social Security + Medicare are payroll taxes (collectively called FICA) — they apply because you're exercising as a current employee.
Both columns are stated in year-1 dollars: sell-now proceeds compound at the market return and pay LTCG on the gain at year 1; any cash paid out of pocket on the hold side carries the same opportunity cost.
Net at year N — by hold period
Estimates only. Excludes AMT (NSOs do not trigger AMT), state-AMT, multi-state moves, and disqualifying-disposition edge cases. Not financial advice.
You calculated one NSO decision. The beta plans NSOs alongside RSUs and ISOs in a single multi-year tax plan.
Request beta access →About MongoDB
MongoDB (MDB) is a public Data company, incorporated in Delaware and headquartered in New York, NY. IPO'd Oct 19, 2017.
Last close: $348.81 per share (as of 2026-06-17).
Equity grants at MongoDB typically include non-qualified stock options (NSOs) and restricted stock units (RSUs).
MongoDB, Inc. is an American software company that develops and provides commercial support for the source-available database engine MongoDB, a database for unstructured data. Over the years, the company has expanded the product from its NoSQL roots to have broader appeal to enterprise customers, such as adding ACID and transactions.
Source: Wikipedia (CC BY-SA 4.0)
Dwight Merriman, Eliot Horowitz, and Kevin Ryan founded the company as 10gen in New York in 2007, drawing on their DoubleClick roots to build a document database that ditched rigid table schemas. The flagship MongoDB engine pairs with Atlas, a managed cloud service spanning AWS, Azure, and GCP, and now ships Vector Search for retrieval-augmented generation and agentic AI workloads. Shares listed on NASDAQ as MDB in October 2017. Dev Ittycheria steered the business from 2014 through fiscal 2026, when revenue reached roughly $2.46 billion; Chirantan Desai then took the CEO seat.
Sources: investors.mongodb.com
Equity comp at MongoDB
- 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 2026-05-07.
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by MongoDB.
Use this calculator to estimate your MongoDB (MDB) NSO exercise tax (federal, state, FICA), then compare selling now versus holding through the long-term capital gains threshold. Inputs are yours: grant terms, current price, your income, your state.
Example: at MongoDB (MDB)'s last close of $348.81, exercising 5,000 NSOs with a $104.64 strike creates a $1,220,850 bargain element, taxed as ordinary income on the day you exercise. Combined federal + state + FICA on that bargain typically lands between $329,630 and $549,383 depending on your bracket and state. The calculator above computes the exact figure for your situation and compares selling now vs. holding through the long-term capital-gains threshold.
All MongoDB tools → · Use the generic NSO Exercise Calculator for any company.
MongoDB equity questions
- How is a MongoDB NSO exercise taxed?
- Exercising a non-qualified stock option (NSO) creates ordinary income on the bargain element (the price on the day you exercise minus your strike), subject to federal income tax, state income tax, and FICA. The calculator above computes that tax for your MongoDB grant and compares selling the shares now against holding past the one-year mark for long-term capital-gains treatment.
- Does MongoDB grant ISOs, NSOs, or RSUs?
- Equity compensation at MongoDB typically takes the form of non-qualified stock options (NSOs) and restricted stock units (RSUs). Restricted stock units are taxed as ordinary income when they vest.
- Do MongoDB RSUs use double-trigger vesting?
- No. MongoDB 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.
One piece of the puzzle.
OptionsAhoy plans your MongoDB equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.