how much does that mean our M1 money supply is? tormed central bank. Currently, the public holds cash of \( \$ 100,000 \), and within banks we have \( \$ 100,000 \) in checking accounts and \( \$ 40,000 \) in savings accounts. Zack You mention cash, checking, and savings - are there different categories of money? Jun Yes! There are different money aggregates - called \( M 1 \) and \( M 2 \). Let's start with M1. M1 includes cash, traveler's checks (we don't have any of those), and checking balances. How much does that mean our M1 money supply is?