The Post Money Valuation Estimator adds new financing proceeds to a pre-money valuation and calculates the new investor’s implied ownership. It provides a direct way to translate a headline pre-money term into the company value and ownership percentages immediately after the round. Use the result to compare financing offers with different valuation and check sizes. For a complete cap-table analysis, also model option-pool changes, outstanding convertibles, warrants, and any secondary share purchases separately.
1. Enter pre-money valuation
Use the negotiated value before the new financing proceeds.
2. Enter new investment
Use only the amount purchasing newly issued company shares.
3. Review post-money valuation
The calculator adds the two inputs.
4. Check ownership percentages
Investor ownership is investment divided by post-money valuation; existing holders retain the remainder.
Where:
Assumptions: The model assumes a single new-money priced investment and no simultaneous conversions or pool adjustments.
Post-money valuation is the value immediately after the financing proceeds are included.
A secondary sale transfers existing shares and usually does not increase company post-money value in the same way as primary capital.
Given: Pre-money valuation = $8 million and investment = $2 million.
Calculation: Post-money valuation = $8M + $2M = $10M. Investor ownership = $2M ÷ $10M = 20%.
Result: The post-money valuation is $10 million, with 80% retained by pre-round holders in aggregate.
Yes. That is the central distinction from pre-money valuation.
Usually no, because secondary proceeds go to selling holders rather than the company.
It may include a pre-money option-pool increase, SAFE or note conversions, or a different fully diluted share definition.
Compare both ownership sold and cash received. A higher post-money figure can still produce similar dilution if the check is also larger.
No. It is a financing convention at a point in time, not a guarantee of future market value.