Post Money Valuation Calculator

Calculate post-money valuation after investment rounds. Determine company value after new capital injection for startups and investors.


How the Post Money Valuation Calculator works

Enter pre-money valuation and investment amount. Get post-money valuation and investor equity percentage automatically.

Startups and investors need to know company valuation after funding rounds. Post-money valuation determines investor ownership stake and dilution impact.

How it works

Tutorial

Post-money valuation is what your company is worth after investors put money in. It determines how much of your company investors get for their money.

Use the calculator above for instant results, or follow this guide to calculate manually.

The Formula

MetricFormula
Post-Money ValuationPre-Money Valuation + Investment Amount
Investor Ownership %(Investment ÷ Post-Money Valuation) × 100
Your Ownership %100% – Investor Ownership %
Price Per ShareInvestment ÷ Shares Issued to Investors

Step-by-Step Example

Your startup is raising a Series A round.

Step 1: Start With Pre-Money Valuation

DetailAmount
Pre-money valuation$8,000,000
Investment amount$2,000,000
Current shares outstanding8,000,000

Step 2: Calculate Post-Money Valuation

Post-money = Pre-money + Investment

$8,000,000 + $2,000,000 =$10,000,000

Step 3: Calculate Investor Ownership Percentage

Investor % = Investment ÷ Post-Money × 100

$2,000,000 ÷ $10,000,000 × 100 =20%

Investors will own 20% of your company.

Step 4: Calculate Your New Ownership

Before the investment, you owned 100%. After:

ShareholderOwnership
Existing shareholders (you)80%
New investors20%
Total100%

You’ve been diluted from 100% to 80%, but your stake is worth more.

Step 5: Calculate Shares Issued

How many new shares do investors get?

If investors get 20% and there are 8,000,000 existing shares representing 80%:

New shares = (Existing shares × Investor %) ÷ (100% – Investor %)

New shares = (8,000,000 × 20) ÷ 80 =2,000,000 shares

Step 6: Calculate Price Per Share

Price per share = Investment ÷ New Shares

$2,000,000 ÷ 2,000,000 =$1.00 per share

Step 7: Calculate Share Value

Before InvestmentAfter Investment
8M shares at $1.00 = $8M8M shares at $1.00 = $8M
You own: 100% = $8MYou own: 80% = $8M
Investors own: 20% = $2M
Your stake value: $8MYour stake value: $8M (of $10M total)

Note:Your percentage went down (100% to 80%) but your stake value stayed the same ($8M) because the company is now worth more.

What This Means

At an $8M pre-money valuation, a $2M investment creates a $10M post-money valuation. Investors get 20% of the company for their $2M. Your ownership drops from 100% to 80%, but your stake is still worth $8M (now part of a larger $10M pie).

Key insights:

  • Higher pre-money valuation = less dilution for same investment
  • Dilution isn’t bad if the company becomes more valuable
  • 10% of $100M is better than 100% of $1M
  • Post-money valuation determines investor ownership percentage


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