Dynamic Equity

A method for splitting ownership based on real contributions over time, not guesses upfront. Ownership adjusts as people add time, cash, revenue, or other measurable value. Must be converted to a fixed cap table before raising institutional funding.

Why it matters

Dynamic equity solves the fundamental problem with static splits: you can't predict the future. Instead of locking in percentages on day one, ownership reflects what people actually contribute over time. This eliminates the resentment that builds when contributions diverge from ownership.

The practical result is that dynamic equity prevents dead equity from accumulating in the first place. When someone stops contributing, their share of the growing total simply stops increasing, and the active contributors' percentages naturally rise. No negotiation needed, no awkward conversation — the math handles it.

For teams where contributions are genuinely uncertain (part-time founders, contributors with different skill sets and time commitments), dynamic equity removes the pressure of making a definitive bet on day one that may prove wrong within months.

How it works

In a dynamic equity model, each contributor's time and cash are tracked at agreed-upon rates. Your ownership percentage at any point equals your share of total contributions. If you've put in 60% of the total value, you own 60%. When someone new joins, their contributions get added to the pool and everyone's percentages adjust naturally.

When you're ready to raise or formalize, you convert the dynamic split to a fixed cap table. For example, three co-founders tracking over six months might end up at 45/35/20 instead of the 33/33/33 they would have guessed on day one. That 45/35/20 becomes the basis for issuing actual shares in your C-corp.

Equity multipliers allow teams to weight different types of contributions differently. Cash contributions, which carry more risk than time (if the startup fails, cash is lost while time was at least spent building skills), often receive a 2x multiplier. IP contributions are typically valued at a negotiated amount. See equity multiplier for more detail on how this works.

History and origin

The dynamic equity model has conceptual roots in profit-sharing arrangements that date back centuries, but its modern formalization for startups emerged in the late 2000s. The biggest catalyst was Mike Moyer's book "Slicing Pie," first published in 2012, which provided a complete, mathematically rigorous framework for contribution-based equity splitting.

Moyer's Slicing Pie framework emerged from his own painful experience with a co-founder dispute. After watching a company fall apart because the founders couldn't agree on what their contributions were worth after the fact, he developed a system that tracked everything in real time, eliminating after-the-fact arguments. The book found a strong following among bootstrapped and early-stage founders who felt that traditional equal or negotiated splits were inadequate.

Since then, several tools and platforms have built dynamic equity tracking into their products, including Equity Matrix. The model remains most popular in the pre-institutional phase of a startup's life, before formal cap table management is needed. As awareness of dead equity grows among founders, dynamic equity has moved from niche to mainstream as a discussion topic, even if many teams still default to fixed splits.

Frequently asked questions

What is dynamic equity?

Dynamic equity is a method of allocating startup ownership based on actual contributions over time rather than a fixed split agreed upon at founding. Each person's equity percentage at any point reflects their proportional share of total contributions (time, cash, IP, or other value) logged to date. As more people contribute and as contributions change, everyone's percentages update accordingly.

How is dynamic equity different from vesting?

Vesting starts with a fixed allocation and releases it over time based on tenure. Dynamic equity doesn't start with a fixed allocation at all — you earn shares proportional to what you contribute. If one founder contributes 70% of the total value and another contributes 30%, they own 70% and 30% respectively, regardless of any predetermined agreement. Vesting protects against early departures; dynamic equity ensures ongoing contributions determine ownership.

When should a startup convert from dynamic equity to a fixed cap table?

Startups should convert to a fixed cap table before raising institutional funding, before bringing on employees with option grants, and before the team's contributions have stabilized. Many teams convert at a natural milestone: when they incorporate, when they close a pre-seed round, or when contributions have been tracked for 6-12 months and the percentages feel fair to everyone. See our guide on when to convert dynamic equity to a cap table.

What contributions count in a dynamic equity model?

Any quantifiable contribution can count: time worked (valued at a fair market rate for the person's skills), cash invested, revenue generated or brought in, IP contributed (valued at a negotiated amount), and equipment or facilities provided. The team agrees upfront on what counts and at what rates, then logs contributions consistently. Equity multipliers can be applied to cash and other high-risk contributions to weight them more heavily.

Is dynamic equity legally recognized?

A dynamic equity arrangement itself is not a standard legal structure — it's a tracking and calculation framework. To have legal force, the team should document the agreement in an operating agreement (for LLCs) or a founder agreement, specifying how contributions are tracked and how equity percentages are calculated. When you convert to a fixed cap table, standard equity instruments (stock, LLC units) are used.

Can a late-joining co-founder participate in dynamic equity?

Yes. One of the main advantages of dynamic equity is that late joiners naturally earn appropriate ownership based on their contributions from the point they join. A co-founder who joins six months after founding immediately starts earning equity proportional to their contributions, without a separate negotiation about what "fair" is. Their percentage grows as they contribute, relative to the total pool.

What is the Slicing Pie model?

Slicing Pie is the most widely known dynamic equity framework, developed by Mike Moyer and described in his 2012 book of the same name. It provides specific formulas for valuing different types of contributions (with multipliers for cash and other at-risk inputs) and rules for how equity changes when someone leaves the team. Equity Matrix is built around similar contribution-tracking principles.

Learn more

• Dynamic vs. fixed equity: which is right for your team?
• How to split equity in a startup
• Slicing Pie guide
• When to convert dynamic equity to a fixed cap table
• Dead equity: the silent killer of startups

Related terms

• Contribution Tracking
• Equal Split
• Founder Equity Split
• Sweat Equity
• Cap Table
• Equity Multiplier