SAFE ownership calculator for post-money SAFE math
Estimate the ownership percentage implied by a post-money SAFE before it becomes a cap table surprise.
Quick answer
SparkLaunch helps founders use SAFE ownership math by connecting investment amount, post-money valuation cap, dilution scenarios, SAFE records, and cap table cleanup into one founder workflow.
Formula
Post-money SAFE ownership = investment amount / post-money valuation cap.
Example
A $100,000 SAFE with a $5,000,000 post-money valuation cap implies 2.0% ownership before considering other financing effects and future round terms.
Inputs
- Investment amount
- Post-money valuation cap
- Discount or side terms if present
- Other SAFEs and option pool context
Outputs
- Implied ownership percentage
- Cap table note for diligence
- Questions to review before signing another SAFE
SparkLaunch workflow
- Save SAFE terms
- Model dilution
- Attach documents
- Prepare investor-ready cap table exports
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