Calculate post-money valuation from the investment amount and equity percentage given, and see the implied dilution impact on existing shareholders.
The Post-Money Valuation Calculator determines the implied total value of a company after an investment is made. If an investor puts in $2M for 20% equity, the post-money valuation is $10M ($2M ÷ 0.20). This is one of the most fundamental calculations in venture capital and startup fundraising.
Post-money valuation is particularly important for understanding SAFE (Simple Agreement for Future Equity) investments, where the valuation cap effectively sets the post-money valuation. It's also crucial for understanding how much of the company each existing shareholder owns after dilution from the new investment.
This calculator shows you the implied post-money valuation from various investment scenarios, the dilution impact on existing shareholders, and how different equity percentages affect the overall valuation picture. Understanding these dynamics is essential for founders evaluating term sheets and investors analyzing potential deals.
Entrepreneurs, finance teams, and small-business owners gain a competitive edge from accurate post-money valuation data when setting prices, forecasting revenue, or managing operational costs. Save this tool and revisit it each quarter to keep your financial plans aligned with current market realities.
Knowing your post-money valuation tells you and your investors what the company is worth immediately after funding. It sets the benchmark for the next round, determines each shareholder's economic stake, and influences employee option values. This calculator is especially useful when evaluating SAFE notes (which specify a post-money valuation cap), comparing term sheets from different investors, or modeling the dilutive effect of accepting various investment offers on your ownership.
Post-Money Valuation = Investment Amount ÷ (Equity % Given ÷ 100) Pre-Money Valuation = Post-Money Valuation − Investment Amount Existing Holder Dilution = 1 − (1 − Equity % Given ÷ 100) New Ownership % of Existing Holder = Old % × (1 − Equity % Given ÷ 100)
Result: $12,000,000 post-money, $9,000,000 pre-money
A $3M investment for 25% equity implies a post-money valuation of $12M ($3M ÷ 0.25). The pre-money valuation is $9M ($12M − $3M). If a founder previously owned 80% of the company, their post-investment ownership drops to 60% (80% × 0.75), though the value of their stake increased from 80% of ~$9M ($7.2M) to 60% of $12M ($7.2M).
Post-money valuation is the cornerstone calculation for any equity investment. It answers the simple question: what is this company worth right now, including the cash that was just invested? Every other number in a cap table flows from this figure, making it essential for founders, investors, and employees with stock options.
Y Combinator's post-money SAFE has become the default instrument for early-stage fundraising. Unlike the original pre-money SAFE, the post-money version guarantees the investor a specific ownership percentage (investment ÷ valuation cap). This simplicity eliminates ambiguity but can lead to more dilution for founders when multiple SAFEs are stacked before a priced round.
Every investment dilutes existing shareholders proportionally. If you give up 20% to a new investor, every existing shareholder's percentage drops by 20% of what it was. A founder with 60% ownership becomes 48% after the round. Understanding this math before negotiation prevents unpleasant surprises.
Post-money valuation directly impacts the paper value of employee stock options. A higher post-money makes existing options more valuable on paper, helps attract talent, and sets the 409A strike price for future option grants. This creates a virtuous cycle where successful fundraising improves your ability to recruit.
Post-money valuation is the total value of a company immediately after receiving an investment. It equals the pre-money valuation (the company's value before the investment) plus the investment amount. It's the number used to calculate each shareholder's ownership percentage.
Pre-money is the company's value before the investment; post-money is the value after. If a company is worth $8M before raising $2M, the pre-money is $8M and the post-money is $10M. The investor's 20% is calculated on the post-money ($2M ÷ $10M), while the founders' dilution is measured from pre-money.
A post-money SAFE (introduced by Y Combinator) specifies a post-money valuation cap. The investor's ownership percentage is simply their investment divided by the cap. For example, $500K on a $5M post-money SAFE gives exactly 10% ownership. It's cleaner math than the original pre-money SAFE structure.
In the short term, yes — a higher post-money means less dilution. But it also sets a higher bar for the next round. If the company doesn't grow fast enough to justify an even higher valuation, you risk a down round with painful consequences including anti-dilution adjustments and negative signaling to the market.
In a priced round, all investors share the same post-money valuation. If two investors each put in $1M at a $10M post-money, they each own 10%. The total new investment is $2M, pre-money is $8M. The post-money valuation is not doubled when there are multiple investors.
In 2025–2026, seed-stage post-money valuations typically range from $6M to $20M in major markets. The exact number depends on traction, team, market, and competitive investor interest. Early revenue companies command higher valuations than pre-product startups.