The loanable funds myth claims banks lend out depositors' savings, but this is backwards. Banks actually create new money from nothing when they make loans, then look for reserves afterward. Your loan deposit appears instantly - the bank didn't need to find that money first from someone else's savings.
Common Myths · Fundamental
The loanable funds myth is the false belief that banks intermediate between savers and borrowers by lending out existing deposits, when banks actually create new money through the lending process itself.
Showing the general audience (curious adults) level. Rewrites in place at every other depth.
Mainstream economics teaches that banks are intermediaries - they collect deposits from savers and lend them to borrowers, like a middleman matching lenders with borrowers. This 'loanable funds' theory suggests interest rates balance saving and investment. However, this fundamentally misunderstands modern banking. Banks don't lend out existing deposits; they create new money when they approve loans. When you get a mortgage, the bank simultaneously creates a deposit in your account and records your debt obligation. The money didn't exist before - it was created digitally. Later, banks find reserves if needed from other banks or the central bank. This isn't just technical detail - it reverses the causation. Loans create deposits, not the other way around. Banks are constrained by capital requirements, regulations, and creditworthy borrowers, not by deposits. Central banks supply whatever reserves banks need, usually automatically.
Why it matters
This myth underpins harmful economic policies. If banks needed deposits to lend, then government deficits would 'crowd out' private investment by reducing available savings. But since banks create money, government spending can coexist with private investment. It also explains why quantitative easing didn't cause inflation - adding reserves doesn't directly increase lending.
Example / analogy
Think of banks like restaurants that create meals on demand rather than redistrubuting pre-existing meals. When you order, they don't take food from another customer - they make a new meal using available ingredients (capital, regulations, creditworthy customers).
Detailed explanation
The loanable funds theory incorrectly suggests banks act as intermediaries between savers and borrowers - collecting deposits first, then lending them out. In reality, banks create loans by keystroke, instantly creating new deposits in borrowers' accounts. This new money didn't come from anyone's savings; it's created ex nihilo (from nothing). The bank then seeks reserves to meet regulatory requirements after the loan is made. This understanding completely changes how we view monetary policy, government deficits, and economic stimulus. When government spends, it's not competing with private borrowers for a limited pool of savings - it's adding new money to the economy, just like banks do when they lend.
Common objections
"Banks need deposits before they can lend" - Banks create deposits when they lend, then find reserves afterward to meet requirements. "There's a fixed pool of savings that government and private sector compete for" - Both bank lending and government spending create new money rather than drawing from existing savings. "Interest rates are set by supply and demand for savings" - Central banks set the base interest rate as a policy tool, and banks price loans based on risk and profit margins, not savings availability.
Sovereign Economics Foundation. (2026). "Loanable Funds (Myth)." SEF Knowledge Graph (v1). Retrieved 18 July 2026 from https://knowledge.sovereigneconomics.org/concepts/loanable-funds-myth/.
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