An endowment is a contribution to the assets of the Plant-for-the-Planet Foundation. An endowment makes sense, for example, if you wish to support a specific cause but do not want to establish your own foundation for this purpose. In contrast to donations, endowments do not have to be used promptly, but are permanently added to the foundation's assets. An endowment can also be any small or regular contribution and, like a donation, it is tax-deductible.