What Happens When a Venture Fund Over-Reserves for Follow-On Investments?
NVCA's 2026 Yearbook shows how capital concentrated into large rounds in 2025. Follow-on opportunities can become expensive and competitive when capital concentrates. A reserve policy should not assume every later round is worth defending.
NVCA reported that 487 mega-deals represented 67% of US VC deal value in 2025.
When Reserves Start Weakening the Fund
A fund is over-reserved when the capital held for later rounds stops helping the best companies and starts weakening the opening portfolio. The problem is not a high percentage by itself. It is a reserve that leaves too few first investments, sits unused for years, or gets deployed simply because the fund promised to deploy it. For a $100 million fund with a $10 million first-cheque floor, a 60% reserve leaves room for only four initial companies. That may be sensible for a concentrated strategy. It is not sensible if the pitch also depends on broad diversification.
How Over-Reserving Shows Up
| What the LP sees | Possible cause | Question to ask |
|---|---|---|
| Very few first investments | Reserve percentage is too high for the cheque floor | Does the company count still match the stated strategy? |
| Large cash balance late in the investment period | Winners raised less capital or the manager passed on later rounds | Can the fund make new investments, recycle, or extend the period? |
| Follow-ons into weak companies | Pressure to use a reserve that no longer has a good home | What evidence justified each later cheque? |
| Good companies but low opening ownership | Too much capital was saved for later | Would larger first cheques have created a better fund result? |
Unused Capital Has a Cost
Committed capital that is not called may still affect an LP's cash planning. Capital that has been called but remains idle is worse: it can reduce IRR while creating no company ownership. The legal documents determine whether unused amounts can be returned, redeployed, recycled, or held for future needs. The manager should report why capital remains unspent and what would cause the reserve to be released. Keeping the reserve available is not enough after the likely follow-on needs are known. A reserve should have named uses, time limits, and decision rules.
More Follow-On Capital Is Not Always Better
Protecting ownership in a winner can be one of the best uses of fund capital. Protecting ownership in a company that has not improved simply increases the loss if the company fails. The later cheque should be judged as a new investment at the new price. This is where sunk-cost thinking becomes dangerous. The fund's earlier investment may explain why it has information and rights, but it does not make the next round attractive. The manager should be able to compare the follow-on with every other use of the same money.
Ways to Correct the Plan
- Set a base reserve and a maximum rather than promising one fixed percentage.
- Release capital in stages: Revisit the reserve as companies raise, fail, exit, or no longer need support.
- Keep new-investment authority clear: The documents should say whether unused reserves can fund new names.
- Show how many likely rounds the current reserve can support.
- Return capital when appropriate: Holding cash is not automatically better than giving it back to LPs.
A good reserve is large enough to matter and small enough to remain selective. It should follow the portfolio, not force the portfolio to follow an old spreadsheet.
The Opportunity Cost
Holding more reserves leaves less capital for new companies. A $100 million fund reserving 70% leaves only $30 million for initial checks. At $10 million per company, that supports 3 initial investments before fees.
NVCA reported 487 mega-deals in 2025, representing 3.2% of deal count and 67% of deal value. Later-stage capital can concentrate around fewer companies and higher prices.
When Reserves Become a Problem
If a $100 million fund keeps $50 million in reserves but ultimately uses only $20 million, then $30 million did not participate in the initial portfolio. That unused capital has to be redeployed, recycled, or returned under the documents.
Higher reserves reduce the initial investment pool and can reduce the number of first checks. Illustrative $100M fund.
Over-Reserve Trade-Off
Excessive reserves can protect follow-ons while starving the initial portfolio.
View trade-off data and assumptions
| Reserve ratio | Initial pool | Initial checks at $10M |
|---|---|---|
| 40% | $60M | 6 |
| 60% | $40M | 4 |
| 70% | $30M | 3 |
Show the Cost of Idle Capital
The figures should make the calculation easy to reproduce. Model ownership through the later rounds, not only on the investment date.
Frequently Asked Questions
Is over-reserving safer?
Not always: It can reduce initial diversification and create pressure to deploy follow-on capital just because it is available.
Can unused reserves be reallocated?
Usually documents control: Some funds can recycle or redeploy unused reserves, while others may have timing or strategy constraints.
Related Reading
seed fund reserves, when to stop supporting a company, and loss ratio.