Pre and Post Money Valuation Calculator

Calculate startup valuations before and after investment rounds. Essential for founders and investors to understand equity dilution and ownership percentages.

Company value before investment
Amount being invested
Total shares before investment (optional for equity calculation)

Post-Money Valuation

$0

Pre-Money Valuation

$0

Investment Amount

$0

Investor Ownership

0%

Founder Ownership

0%

Price Per Share

$0

New Shares Issued

0

Ownership Structure

Cap Table Summary

StakeholderSharesOwnership %Value

What is Pre/Post Money Valuation?

Pre-money and post-money valuations are terms used in venture capital and startup financing to describe a company's value before and after receiving investment.

Pre-money valuation is the value of the company before it receives new investment. This represents what the existing shareholders believe the company is worth.

Post-money valuation is the value of the company after it receives investment. It equals the pre-money valuation plus the investment amount.

Key Relationship: Post-Money Valuation = Pre-Money Valuation + Investment Amount

The Valuation Formula

Core Formula:
Post-Money = Pre-Money + Investment

Investor Ownership:
Investor % = Investment / Post-Money Valuation x 100

Price Per Share:
Price = Pre-Money Valuation / Existing Shares

New Shares Issued:
New Shares = Investment / Price Per Share

Understanding Equity Dilution

When a company raises capital, existing shareholders experience dilution - their ownership percentage decreases even though the value of their shares may increase.

Before InvestmentAfter Investment
Founders own 100%Founders own lower % (diluted)
Pre-money value per sharePost-money value per share (higher)
Total value = Pre-moneyTotal value = Post-money

Worked Example

A startup has a pre-money valuation of $5 million. An investor offers $1 million:

Factors Affecting Valuation

Negotiation Tips

For Founders

For Investors

Frequently Asked Questions

Can a company have negative valuation?

No. Both valuations represent company value, which cannot be less than zero. A struggling company might have a very low valuation but never negative.

What's the difference between valuation and price?

Valuation is the total company worth. Price per share is valuation divided by total shares. Both matter in different contexts.

How is the option pool handled?

Option pools are typically created from pre-money shares, meaning founders bear the dilution. A 10% option pool on $5M pre-money effectively reduces founder value by $500K.

What if there's no revenue yet?

Pre-revenue startups are valued based on team, market potential, technology, and comparable company valuations. This is more art than science.