What it means
The defining feature is that the funding relationship does not have a scheduled end. Instead of raising a round, spending it and raising again, the company draws capital in tranches from a standing commitment, and the supplier of capital keeps the arrangement open as long as performance and confidence hold.
For a growing business the attraction is a calmer runway. Management spends less time fundraising, the terms of each instalment are agreed once at the outset, and the company avoids the risk of hitting the market when conditions have turned against it.
The mechanics are usually milestone-based. A commitment letter or investment agreement lists the conditions for each tranche, such as reaching a revenue level, signing a defined number of customers or completing a product release, and the money is released only when those conditions are met.
On the investor side, evergreen funds are structured to hold assets indefinitely. Rather than returning cash to investors after a set life of ten years, the fund reinvests proceeds, which allows it to back a company patiently through several stages instead of pushing for an exit on a fixed timetable.
The nuance is the balance of power. Because the company depends on the next tranche, the funder retains considerable influence over strategy, and a missed milestone can mean renegotiated terms, a lower valuation or a withdrawn commitment at exactly the moment the money is needed.
In practice
Real-world examples.
Example
A biotechnology start-up agrees a $20,000,000 commitment released in five tranches tied to clinical milestones. Each release depends on completing a trial phase, so the investor's money follows evidence rather than a business plan.
Example
A family office backs a chain of dental clinics with rolling capital for new sites. Every time the operator identifies a location and signs a lease, the family office releases roughly $900,000 for the fit-out, and profits from mature clinics fund part of the next opening.
Example
An evergreen infrastructure fund owns a portfolio of water treatment assets. Because the fund has no wind-up date, it reinvests operating cash into upgrades rather than selling assets to return capital to investors on a schedule.
Formula
Calculation
Undrawn commitment = total commitment - cumulative amount drawn.
Commitment fee = average undrawn commitment x fee rate.
A venture investor commits $6,000,000 to a business in four equal tranches of $1,500,000, released on milestones roughly every six months, and charges a 0.5% annual commitment fee on the undrawn balance.
In year one the company draws the first tranche of $1,500,000 at the start of the year and the second tranche of $1,500,000 exactly halfway through.
Undrawn balance for the first half year = $6,000,000 - $1,500,000 = $4,500,000.
Undrawn balance for the second half year = $6,000,000 - $3,000,000 = $3,000,000.
Average undrawn over the year = ($4,500,000 + $3,000,000) / 2 = $3,750,000.
Commitment fee = $3,750,000 x 0.5% = $18,750.
The company therefore paid $18,750 for the certainty of having $3,000,000 still available without having to raise it in the open market.Case study
Seen in the real world.
This is an illustrative, fictional example. Larkspur Analytics, an invented data software company, agreed evergreen funding of $6,000,000 from a single investor rather than running a competitive round. The money came in four tranches of $1,500,000, each tied to a customer count milestone, and Larkspur paid a 0.5% commitment fee on the undrawn balance.
For eighteen months the arrangement worked well. Larkspur drew three tranches on schedule, the founders spent almost no time fundraising, and the total commitment fee over that period came to under $30,000, which the board considered cheap insurance.
The final tranche exposed the catch. Larkspur missed its milestone of 400 paying customers by 38, and the investor was entitled to withhold the money. Rather than refuse outright, the investor offered the $1,500,000 at a valuation 20% below the previously agreed level. With no alternative funder lined up, Larkspur accepted, and the founders' combined stake fell by several percentage points. The board's later view was that the certainty had been worth having, but that they should have kept a second funding relationship warm throughout.
Watch out
Common mistakes.
- Treating a commitment as money already in the bank. Tranches are conditional, and a missed milestone can mean the cash never arrives.
- Setting milestones that management does not fully control. Conditions tied to third-party approvals or a single large customer can fail for reasons unrelated to execution.
- Relying on one funder for the entire journey. A single provider with no competing offer has strong pricing power at every renegotiation.
Questions
People also ask.
How does this differ from a normal funding round?
A round raises a fixed amount at one point in time, while evergreen funding is a standing commitment drawn in stages against agreed conditions.
Does it cost more than a conventional round?
Often slightly, because of commitment fees and tighter milestone terms, but it can be cheaper than raising a rescue round in a weak market.
Is an evergreen fund the same as evergreen funding for a company?
They are related but distinct: the fund is a vehicle with no fixed life, while the funding is the staged capital a business receives.
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