Compute First-Year Cliff and Monthly Equity Share Vesting — Free
Evaluating startup and corporate compensation offers requires understanding equity vesting mechanics, where headline share figures are locked behind a mandatory one-year cliff. Enter your equity grant tranches, total awarded shares, and vesting schedules to calculate the exact share volume released on your first anniversary.
The proof surface
Contractor rate calculators compute hourly compensation floors; this schedule projects equity vesting cliff releases and tranche share totals for employment compensation offers.
Inputequity grant tranche | total awarded shares | vesting period in months; one-year cliff release percentage
Rare deviceContractor rate calculators compute hourly compensation floors; this schedule projects equity vesting cliff releases and tranche share totals for employment compensation offers.
Output artifactShares vested at first-year cliff with row-by-row context
Cost$0 local calculation · no card, paid key, subscription or signup · proposed filing price is not for sale
Sample, not your facts: Illustrative inputs: Initial new-hire stock grant | 4800 | 48; Performance incentive grant | 1200 | 48. One-year cliff release percentage = 25.0. Shares vested at first-year cliff: 1500 shares. All records are invented.
Before using the vesting-cliff schedule
Before comparing job offers or negotiating executive equity packages, review the stock option agreement or Restricted Stock Unit (RSU) grant notice. Standard technology compensation plans follow a four-year (48-month) vesting schedule with a one-year (12-month) cliff: if you leave the company before completing twelve full months of service, you forfeit 100% of awarded shares. Upon crossing the one-year milestone, the cliff percentage (typically 25%) releases immediately, with the remaining 75% vesting in equal monthly or quarterly increments over the subsequent 36 months. Enter each grant tranche to calculate your exact first-year equity release and model real ownership progression.
Why the flat version breaks
Assuming linear monthly vesting from day one
Believing you earn 1/48th of your equity each month during the first year is catastrophic if you depart at month eleven with zero vested equity.
Equating unvested stock options with guaranteed cash
Valuing private startup stock grants as equivalent to liquid salary ignores strike exercise costs, illiquid secondary markets, and tax implications.
Ignoring acceleration clauses on company acquisition
Failing to negotiate single or double-trigger vesting acceleration leaves unvested equity vulnerable to cancellation upon corporate acquisition.
How to work the vesting-cliff schedule
Identify grant tranches and share counts
List all distinct equity grants awarded in your offer letter, including initial new-hire awards, sign-on equity bonuses, and annual performance refreshers.
Specify vesting schedule duration
Enter the total vesting schedule duration in months (typically 48 months for standard corporate and startup employment grants).
Apply first-year cliff percentage
Set your contractually defined cliff percentage (typically 25.0% for 4-year plans). The schedule calculates the exact share count unlocked on anniversary day.
Evaluate monthly linear vesting tail
Deduct cliff shares from total awarded shares to understand the remaining balance that will vest in equal monthly increments across subsequent years.
What the vesting-cliff schedule separates
Question
Before
Inspect this instead
Assuming linear monthly vesting from day one
Believing you earn 1/48th of your equity each month during the first year is catastrophic if you depart at month eleven with zero vested equity.
Specify vesting schedule duration
Equating unvested stock options with guaranteed cash
Valuing private startup stock grants as equivalent to liquid salary ignores strike exercise costs, illiquid secondary markets, and tax implications.
Apply first-year cliff percentage
Ignoring acceleration clauses on company acquisition
Failing to negotiate single or double-trigger vesting acceleration leaves unvested equity vulnerable to cancellation upon corporate acquisition.
Evaluate monthly linear vesting tail
This vesting-cliff schedule replaces a manual count or calculation, not source verification or the responsible person’s review.
Run it on the samples, right here
FIRST-LOAD
HYPOTHESIS / PROTOTYPE — checkout unavailable. Calculation is local. A draft is saved automatically in this browser profile when storage is available; Reset to sample clears it. Optional Pro history stores only five summaries and has its own deletion control. State links encode your inputs and can remain in browser history, clipboard or recipients’ records; share only non-sensitive rows. Optional external AI formatting leaves this device. The required site analytics beacon reports page activity; shared URLs contain encoded inputs. Do not treat an encoded URL as private. The calculator has no input-collection endpoint.
Equity vesting schedule arithmetic only, not financial planning, valuation modeling, or tax advice. Stock values, strike prices, tax obligations, and liquidity events depend on corporate capitalization and market factors. Consult a financial advisor.
Data note: The vesting-cliff schedule processes equity grant tranche | total awarded shares | vesting period in months locally. Starter/sample selection and Run compute in this tab; no input is sent by the calculator. A local draft may be saved; explicit state-link sharing or optional external AI formatting can disclose inputs. Use non-sensitive labels.
Go deeper: the companion app files the same reading as a paper ticker strip
The article demo above runs without limits. The companion app keeps a local history, exports the rows as CSV, prints the vesting-cliff schedule reading, and holds your drafts on this device — one complete free app run; the proposed $4 one-time filing layer is not for sale.
The vesting-cliff schedule answer stays complete for free. The proposed $4 one-time filing layer adds row CSV, print and five local reading summaries, not hidden answers. Checkout is unavailable; the article demo remains unlimited.
Equity vesting schedule arithmetic only, not financial planning, valuation modeling, or tax advice. Stock values, strike prices, tax obligations, and liquidity events depend on corporate capitalization and market factors. Consult a financial advisor.
What this is built on
Method: Set your contractually defined cliff percentage (typically 25.0% for 4-year plans). The schedule calculates the exact share count unlocked on anniversary day.
All sample records, dates, quantities and labels are invented. No outside policy, contract, rate, clock offset, measurement or accessibility standard is represented as verified.
Google’s official pricing documentation, fetched 2026-09-30, says AI Studio is free in available regions. Optional formatting may require a Google account; manual local entry requires none. Limits can change and free-tier content may be used to improve products. Do not send private records.
Before: an equity grant headline number obscured when shares actually release. After: the 12-month cliff release and subsequent monthly tranches are visible milestones.
Three worked readings, with different inputs
Sample A — typical inputs
Initial new-hire stock grant | 4800 | 48
Performance incentive grant | 1200 | 48
Initial new-hire grant awards 4,800 shares over 48 months; at a 25.0% cliff, 1,200 shares release upon completing month twelve. Performance grant awards 1,200 shares, releasing 300 shares at the cliff. Total shares vested upon reaching the first-year employment anniversary equals 1,500.0 shares, after which remaining shares vest monthly.
A 3,600-share grant over a 36-month schedule with a 30.0% first-year release unlocks exactly 1,080.0 shares at month twelve, leaving 2,520 shares to vest over the subsequent 24 months.
An advisory grant with a 0.0% cliff unlocks zero shares at month twelve, representing immediate monthly linear vesting or deferred milestone structures. Total cliff shares equal 0.0.
Optional AI formatting, never the calculation
Manual entry completes this vesting-cliff schedule for free without signup. If available to you, the free AI Studio interface linked in the sources may format fictional or non-sensitive notes; external access may require an account. No API key or AI call is built into this tool. Free-tier content may be used to improve products. Review each cell and transcribe it to the labeled row schema; do not paste the JSON object into the row box.
Format only these fictional or non-sensitive notes for a vesting-cliff schedule. Return strict JSON shaped as {"rows": [{"label": "string", "cells": ["string", "string"]}], "setting": "string"}. The columns are equity grant tranche | total awarded shares | vesting period in months; the setting is One-year cliff release percentage. Keep all supplied strings and quantities exactly; do not calculate, infer missing entries, invent dates or add advice. If any required value is missing, return an empty rows array and ask me for it separately. I will verify every cell against my source and manually transcribe rows using vertical bars before running the local calculator.
An AI response is not executed, fetched or trusted as a result. Missing values remain questions; the strict local parser checks the rows you actually enter.