Austin Campbell says stablecoins move bank deposits, not destroy them

Banks have spent months warning that stablecoins could drain their deposit base. Austin Campbell thinks the math says otherwise. On a recent episode of CoinDesk’s The Policy Protocol podcast, published around October 23, 2026, the founder and CEO of Zero Knowledge argued that stablecoins cannot cause net deposit flight from the banking system. His view: the money changes hands, but it never actually leaves. The accounting argument Campbell’s case rests on a simple observation about plumbing. Every time a stablecoin is created or redeemed, a bank deposit moves from one account to another. Stablecoins causing deposit flight is “mathematically not possible,” Campbell said. Stated plainly, when someone buys a stablecoin, their dollars land in somebody else’s bank account. When they redeem, the trip runs in reverse. Ownership of the deposit shifts between accounts or between banks, according to Campbell, but the total pool is not destroyed in the process. Campbell’s point is narrower and more technical. A particular bank might lose deposits to another bank. The system as a whole, in his telling, does not. He also pushed back on the idea that stablecoins are simply a riskier version of a...