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An equity percentage is only one part of a partnership decision. Founder Equity, Vesting & Buyout Lab keeps issued ownership, options and the unallocated pool separate. Model a priced investment round, inspect the dilution and follow monthly vesting through a cliff and a departure date.
Use entered contractual prices to compare a buyout paid now or over time. Connect the payments to the business cash calendar and see the first reserve breach. Every scenario keeps its assumptions and calculation.
This tool does not issue securities, decide a fair legal split, value complex preferred rights or automatically interpret a SAFE, tax rule or shareholder agreement.
What you get
- Issued and fully diluted views, with the unallocated pool as its own row.
- Monthly cliff vesting from the original vest start, stopped at the end of service.
- Priced-round and pool top-up scenarios with exact model units.
- Departure comparison: vested units on alternative dates.
- Buyout schedule with interest, balloon and an optional loan.
- Business cash calendar with the first reserve breach, and printable reports and CSV files.
How it works
- Enter holders and the ledger. Add founders and other holders, then the confirmed share issues, transfers, cancellations, exercises and buybacks — or import them from CSV.
- Add grants, pool and round scenarios. Record option and restricted-unit grants with their cliff and period, reserve a pool and model a priced round on an explicit basis.
- Model a departure. Pick the departing holder and date, enter the agreed price or a stated equity scenario and the payment terms.
- Check cash and report. See the payments on the business cash calendar next to the reserve, compare variants and print the report with every assumption.
Limits
Decision support under your inputs: not a share register, securities issue, valuation, legal, tax or investment advice. Convertible terms count only with explicit units or price; different share-class rights are not modelled.
Questions
Does this use AI?
No. Calculations follow the rules and assumptions shown in the tool. The help panel explains the inputs, formulas and limitations.
What is included in a one-time purchase?
The full online tool, the self-contained offline package, a guide, templates and your own reports and backups, under the licence shown at checkout.
Is it included in PRO?
Active PRO Week, Month and Year subscribers can use the full online tool. The offline program for this new tool is included only with a one-time purchase. Your own reports and data backups are not offline-program downloads.
What happens if PRO ends?
You can still view and back up your existing local records. Creating or editing calculations requires renewed PRO or a one-time purchase. A separate one-time purchase remains valid independently of PRO.
Where are my records stored?
The calculation workspace stores records in your browser on this device. Save regular backups. Clearing browser storage can remove local records. Account and purchase records are handled separately by the website.
Can I use another language or currency?
The interface supports English, Spanish, German, French, Portuguese, Italian, Dutch and Russian. Choose your calculation currency separately from the language. Currency conversion uses the rates or assumptions you enter.
Does the demo accept my data?
No. The demo uses fictional examples and lets you inspect the workflow and sample reports. Your own inputs and imports are available in the full version.
Does this replace a professional adviser?
No. It explains calculations under your inputs. Use appropriate professional advice for legal, tax, employment, investment, credit and safety decisions.
Are options already issued shares?
No. Options count in the fully diluted view until they are exercised, cancelled or expire; only an exercise recorded in the ledger issues shares.
Does it choose a fair split?
No. It shows the consequences of the ownership, vesting and prices you enter. It does not decide what is fair.
Does every convertible contract work?
Only with manual, explicit conversion units or an explicit conversion price. Other terms remain listed as unresolved and are not counted.
Does a scenario change ownership?
No. Rounds and buyouts are scenarios. Ownership changes only through confirmed events in the security ledger.
Business license for use in your own business. No resale or redistribution. Opens in your browser right after payment, on phone and computer. Your figures stay on your device. No physical item.
Founder Equity, Vesting & Buyout Lab
See who owns what, what changes when someone leaves and whether the business can afford the agreed buyout.
See ownership, vesting and the buyout cash before you agree — buy once for $29.
- One-time purchase
- Full version of this tool on the site plus an offline version to download. One payment. The offline copy works without a subscription.
- Access with PRO
- Full version on the site while your PRO is active. Export of your results and backups is included. The offline program is bought separately.
Pay by card, Apple Pay or Google Pay
- Works in any country · your own currency
- Download link on the confirmation page and by email
- What you need: Any modern browser · computer and phone · offline HTML file · CSV & printable reports · 8 languages
- Refund within 14 days, for any purchase
- Formats: Interactive tool in your browser — phone and computer; PDF & CSV export
- Interactive browser app · computer and phone · downloadable offline version with a one-time purchase.
- Exact rational units and fractions; money rounded only where stated, to the currency's smallest unit.
- Cap table as of any date from confirmed ledger events only.
- CSV (UTF-8) and XLSX imports: holders, ledger, grants, receipts and payouts.
- Local workspace storage, complete backups and CSV exports.
- Printable report (A4 or US Letter) with formula versions and an input hash.
- 8 languages; any currency.
- No AI. Every result shows its working.
- One-time purchase.
Any purchase is refunded if you ask within 14 days of payment. Files that will not open, and anything that does not match its description, are refunded in full at any time, with no time limit.
