A Reserve Can Become Too Large to Be Helpful
A fund over-reserves when it holds more for later rounds than its companies are likely to use well. That leaves less for first cheques. It may also put too much into firms that have not earned more support. Too little reserve creates a different risk: the fund may lack cash to maintain its best stakes.
A reserve becomes too large when the opening opportunities given up exceed the likely benefit of later support. Capital held back can exceed what deserving companies are likely to require. No single percentage proves that mismatch.
What the Reserve Removes From Day One
A $100 million fund that reserves 70% has only $30 million for first cheques. At $10 million per company, it can begin with three investments before fees. A pitch based on broad diversification would no longer match the fund budget.
A 60% reserve leaves room for four such companies; a 40% reserve leaves room for six. Either may fit a strategy, but they create different opening portfolios.
A Later Round Changes the Case for Investing
The original reserve model may assume that successful companies will raise large rounds and that the fund will want to participate. Both assumptions can fail. A company may need less capital than expected, or its next round may arrive at a price that offers a weak prospective return.
The 2026 NVCA Yearbook reported that 487 mega-deals represented only 3.2% of US venture deal count in 2025 but 67% of deal value. Later-stage opportunities can absorb substantial capital at high prices, changing what follow-on reserves can buy.
Unused Capital Still Has a Cost
Suppose a fund sets aside $50 million but uses only $20 million for follow-ons. The other $30 million missed the opening investments. The manager must now decide how to invest, recycle or return it under the fund documents.
Uncalled capital affects LP liquidity planning. Called capital sitting idle buys no company ownership and can reduce IRR. The remaining funding needs explain whether retaining the reserve still has value.
Pressure to Deploy the Reserve
A large reserve can quietly change behaviour. Once the money has been promised for follow-ons, a manager may feel pressure to support companies simply because capital is available. That is sunk-cost thinking applied to the portfolio plan.
A later cheque buys future value at today's price. Protecting ownership in an improving company may be attractive, while protecting an unsupported mark can increase the eventual loss.
Higher reserves reduce the initial investment pool and can reduce the number of first checks. The example uses a $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 |
The Cost of Idle Capital
The chart shows the opening trade-off. Years later, company progress may differ from the original plan. Current evidence changes which firms can earn more capital and how much reserve remains useful.
A policy can set a base reserve and a maximum, releasing capital in stages as companies raise, fail or no longer need support. Fund documents determine whether released amounts can fund new investments or return to LPs.
Questions That Expose Over-Reserving
- How many likely rounds can the current reserve support?
- Which companies have a named claim on that capital?
- What evidence must appear before a follow-on is approved?
- When will unused capital be released?
- Would larger first cheques have created more useful ownership?
A reserve balances credible first investments with support for companies that merit another cheque. Changes in those companies can make the original reserve spreadsheet obsolete.
Frequently Asked Questions
Is over-reserving safer?
Not necessarily. Too much reserve can leave the fund with fewer first investments. It can also pressure the manager to write later cheques just because the cash is available.
Can unused reserves be reallocated?
The fund documents usually control. Some funds can recycle or redeploy unused reserves, while others have timing or strategy constraints.