A foundation's investment portfolio is as much a strategic tool as its grant programme. The returns generated by the endowment determine how much can be granted each year; the assets themselves represent resources that are either aligned with the foundation's mission or potentially working against it; and investment decisions today determine the resources available to future communities. Yet many foundation boards give significantly less attention to investment policy than to grantmaking strategy.
This guide explains the key investment policy decisions that foundation boards face, how to think about them, and the governance frameworks that support sound investment management.
The most consequential investment policy decision for a foundation is the annual spending rate — what proportion of the endowment is distributed as grants each year.
The trade-off: A higher spending rate means more impact now but smaller endowment (and lower future grantmaking) over time. A lower spending rate means smaller current impact but growing endowment (and potentially larger future impact). There is no objectively correct answer — it is a values-based decision about the relative claims of present and future communities.
Common spending rates: New Zealand community foundations and other endowment-based organisations typically spend 4-5% annually. International foundations often target similar rates. At 4% with investment returns averaging 6-8% annually, a foundation can maintain the real value of its endowment while granting indefinitely.
Smoothing mechanisms: Investment returns vary year to year. A foundation that spent literally 4% of its market value each year would have grants that varied significantly with market movements — unsettling for grantees who depend on multi-year support. Most foundations smooth spending by calculating their distribution as a rolling average (e.g., 4% of the average of the past three years' market value) rather than a single-year snapshot.
Perpetuity vs. spending down: Some foundations — including some established with specific donor intent to spend down — deliberately plan to exhaust their endowment within a defined period, maximising impact now. This is a legitimate choice that involves different investment strategy (higher risk for higher return is more acceptable when time horizon is defined) and different spending rates (potentially much higher than 4-5%).
Foundation endowments are typically invested in diversified portfolios of shares, bonds, and other financial instruments. Many of those investments are in companies and industries whose activities conflict with the foundation's mission — a health foundation with tobacco company shares, an environment foundation holding fossil fuel investments.
Mission-aligned investing (also called responsible investing, ESG investing, or impact investing) is the practice of aligning investment decisions with mission values:
Negative screening: Excluding specific industries or companies from the investment portfolio — tobacco, weapons, gambling, fossil fuels, industries with poor labour practices. The simplest form of mission alignment.
Positive screening: Actively seeking investment in companies that meet positive criteria — strong environmental performance, gender diversity in leadership, fair pay practices, community benefit.
ESG integration: Considering environmental, social, and governance factors alongside financial factors in investment decision-making. More comprehensive than screening; increasingly standard in institutional investment.
Impact investing: Making investments specifically designed to generate measurable social or environmental benefit alongside financial return — community development finance institutions, green bonds, social impact bonds, direct investment in mission-aligned businesses.
Shareholder engagement: Rather than disinvesting from problematic companies, engaging as a shareholder to advocate for changed corporate practice. Sometimes more influential than divestment.
Full mission alignment: Some foundations attempt to align their entire investment portfolio with their mission — investing only in assets consistent with their values. This is ambitious and may involve some financial return trade-offs.
The governance question for boards is not whether to engage with mission-aligned investing but how deeply — and what trade-offs between mission alignment and financial return are acceptable.
Investment committee: Most foundations with significant endowments establish an investment committee — a subcommittee of the board with specific responsibility for investment oversight. Investment committees should include trustees with relevant financial expertise (investment management, financial analysis, accounting) and may include external investment experts in an advisory capacity.
Investment manager: Most foundations use external investment managers — fund managers who manage the portfolio within the parameters set by the board's investment policy. Selecting, monitoring, and if necessary replacing investment managers is a key governance responsibility.
Investment policy statement: A written investment policy statement (IPS) documents the board's investment objectives, risk tolerance, spending rate, asset allocation parameters, mission alignment requirements, and governance processes. The IPS provides the framework within which investment managers operate and against which their performance is assessed.
Reporting and review: The board or investment committee should receive quarterly investment reports showing portfolio performance, asset allocation, and comparison against benchmarks. An annual review of investment performance, fees, and whether the investment policy remains appropriate is standard governance.
Asset allocation — how the portfolio is divided among different asset classes (shares, bonds, property, cash, alternatives) — is the most important determinant of long-term investment returns and risk.
Higher risk/higher return allocations: Portfolios with higher proportions of growth assets (shares, property) historically generate higher returns over long periods but experience more short-term volatility. Appropriate for perpetual foundations with long time horizons.
Lower risk/lower return allocations: Portfolios with higher proportions of defensive assets (bonds, cash) experience less volatility but generate lower long-term returns. More appropriate for foundations planning to spend down or with near-term obligations.
Typical endowment allocations: Many community foundations and perpetual endowments target allocations of 60-70% growth assets and 30-40% defensive assets — balancing long-term return with risk management.
Rebalancing: As markets move, actual asset allocation drifts from target allocation. Regular rebalancing — selling assets that have grown to above target and buying those below target — maintains the portfolio within the risk parameters the board has set.
Investment costs — management fees, transaction costs, custody fees — are a significant drain on endowment performance that is easy to overlook when markets are rising. A 1% annual fee on an endowment that earns 7% before fees earns 6% after fees — and over 20 years, this makes a very substantial difference to endowment value.
Foundation boards should understand and review the total cost of their investment management — including all layers of fees in fund-of-funds structures or complex products. Passive index funds offer low-cost market returns that many actively managed funds fail to beat after fees.
Tahua's grants management platform helps foundation boards understand the relationship between investment policy and grantmaking — with spending rate modelling, portfolio analytics that show how endowment performance translates to grant programme capacity, and the financial reporting foundations need to link investment governance to grantmaking strategy.