A good investment policy statement(IPS) should make investment decisions easier, not harder. It should give your board clarity, protect your organization, and hold up under scrutiny.

Most nonprofits have an IPS. Not all of them have one that's actually doing its job. In our work with nonprofit organizations, we see the same problems come up again and again: documents that are outdated, too vague to be useful, or simply disconnected from how the organization actually operates.

None of these are catastrophic on their own, but they add up. And when a difficult market or a board transition arrives, a weak IPS is the wrong time to find out.

Here are the most common mistakes we see, and what to do about them.