Minimum Purchases Daniel Guidotti 14 years ago Minimum PurchasesUsed in mutual funds terminology. Minimum amount needed for opening new account by purchasing the units or minimum additional deposit into account required. With automatic purchase plans, these limits may be lowered.Recommended for you:Margin Trading Terminology Maintenance Margin Requirement SpiritBank Offering Rates of 0.90% APY and 1.90% APY on CD Combo Purchases Who’s Responsible for In-app Purchases: Google Inc., Apple Inc.