Money makes money.

Capital can generate further wealth when it is invested, lent, or otherwise put to productive use, though the saying does not guarantee profit from any particular investment. It emphasizes the self-reinforcing capacity of financial resources rather than the effort of earning a first sum.

It can also express the practical advantage held by people who already possess assets: opportunities to profit are often more available to them. Depending on tone and context, it may be a neutral observation, approval of financial growth, or criticism of unequal economic advantage.

Used in discussions of investment, interest, business growth, or wealth inequality. It concisely observes how existing funds can create opportunities for further income, and may sound resigned or critical when contrasting asset owners with people who have little capital.