Model valuation, dilution, investor shares, and your future ownership percentage. Review outcomes before accepting compensation. Plan startup moves with clearer numbers and stronger confidence.
| Scenario | Pre-Money | Investment | Existing FD Shares | Your Shares | Target Pool | Price Per Share | Your Post-Money Ownership | Investor Ownership |
|---|---|---|---|---|---|---|---|---|
| Seed Offer Review | $4,000,000.00 | $1,000,000.00 | 4,000,000.00 | 40,000.00 | 10.0000% | $0.88 | 0.7000% | 20.0000% |
This calculator assumes a target option pool is created before pricing the new round. That structure is common in startup financing discussions.
r = New Investment / Pre-Money Valuation
p = Target Option Pool Percentage / 100
New Pool Shares = [p x (1 + r) x Existing Fully Diluted Shares] / [1 - p x (1 + r)]
Price Per Share = Pre-Money Valuation / (Existing Fully Diluted Shares + New Pool Shares)
Investor New Shares = New Investment / Price Per Share
Total Shares After Round = Existing Fully Diluted Shares + New Pool Shares + Investor New Shares
Your Post-Money Ownership = (Your Shares / Total Shares After Round) x 100
Your Dilution = [1 - (Your Post-Money Ownership / Your Pre-Round Ownership)] x 100
A post money equity calculator helps you read startup offers with more confidence. It shows what your shares may represent after a funding round closes. That matters when a company discusses options, restricted stock, or ownership targets. Many candidates focus on salary first. Good career planning also checks dilution, valuation, and total share count before signing an offer.
Post money equity is based on company value after new capital arrives. New investors receive shares. Existing holders are diluted. A larger option pool can also reduce your percentage. That does not always mean the offer is weak. It means you need context. A smaller slice of a stronger business can still be worth more over time.
This calculator estimates pre-money share price, investor shares, target option pool shares, and total diluted shares after financing. It also compares your ownership before and after the round. That makes it easier to review an offer letter, cap table summary, or compensation package. You can model several funding scenarios before an interview, negotiation, or internal promotion discussion.
Equity can affect long term upside, especially in startup roles. Recruiters may quote a share number without explaining dilution. Founders may mention valuation without showing the option pool impact. This tool turns those inputs into a clear percentage. It helps you ask better questions about vesting, refresh grants, exit value, and future fundraising risk before you commit.
No calculator can predict liquidity, taxes, or final exit outcomes. Still, solid math improves decisions. Use this page to compare offers, pressure test assumptions, and document round terms. Review the implied ownership, not only the share count. In career planning, better equity clarity can protect your time, negotiating leverage, and long term upside.
Bring three scenarios into the conversation. Model a base case, an upside case, and a dilution-heavy case. Check whether the company is using fully diluted shares. Ask whether the option pool increase happens before or after financing. Confirm whether your grant is options or shares. These details shape real ownership more than the headline numbers.
Post money equity is your ownership after new investment closes. It uses the post-round value and updated share count. This figure is often lower than your pre-round percentage because new shares are issued.
A funding round creates new shares for investors. If the company also expands the option pool, more shares may be added. Your share count can stay the same while your ownership percentage falls.
No. Dilution can come with more capital, better hiring, and faster growth. A smaller percentage in a stronger company may still have better future value than a larger percentage in a weaker one.
Fully diluted shares include outstanding shares plus options, warrants, and other potential shares. This gives a more realistic ownership view and helps you compare offers on a consistent basis.
No. It estimates ownership and round-based value using current assumptions. Real outcomes depend on future fundraising, liquidation terms, taxes, vesting, market conditions, and liquidity timing.
Vesting affects when you earn the equity, not the core ownership math shown here. Use this calculator for ownership analysis first, then combine the result with your vesting schedule.
Compare both, but percentage is usually more informative. Raw share numbers can mislead when total company shares differ. Ownership percentage helps you review dilution and compare startup offers more fairly.
Yes. It gives a clearer view of dilution, ownership, and round structure. That makes it easier to ask for more shares, a refresh grant, or better salary when the equity case looks weak.