There are many out there who would have you believe that the central banks are out of tricks.. And that your only hope is to buy their newsletter product or trading service (both of which encourage you to ‘invest’ in a system they themselves claim is doomed). There are still quite a few moves before the call of ‘checkmate’ is heard. The ‘cash escape inhibitor’ is one such move.
Negative interests rates are the shiny new thing that everyone wants to talk about. I hate to ruin a good plot line, but they’re actually kind of boring; just conventional monetary policy except in negative rate space. Same old tool, different sign.
What about the tiering mechanisms that have been introduced by the Bank of Japan, Swiss National Bank, and Danmarks Nationalbank? Aren’t they new? The SNB, for instance, provides anexemption threshold whereby any amount of deposits that a bank holds above a certain amount is charged -0.75% but everything within the exemption incurs no penalty. As for the Bank of Japan, it has three tiers: reserves up to a certain level (the ‘basic balance’) are allowed to earn 0.1%, the next tier earns 0%, and all remaining reserves above that are docked -0.1%.
But as Nick Rowe writes, negative rate tiers—which can be thought of as maximum allowed reserves—are simply the mirror image of minimum required reserves at positive rates. So tiering isn’t an innovation, it’s just the same old tool we learnt in Macro 101, except in reverse.
No, the novel tool that has been created is what I’m going to call a cash escape inhibitor.
Consider this. When central bank deposit rates are positive, banks will try to minimize storage of 0%-yielding banknotes by converting them into deposits at the central bank. When rates fall into negative territory, banks do the opposite; they try to maximize storage of 0% banknote storage. Nothing novel here, just mirror images.
But an asymmetry emerges. Central bankers don’t care if banks minimize the storage of banknotes when rates are positive, but they do care about the maximization of paper storage at negative rates. After all, if banks escape from negative yielding central bank deposits into 0% yielding cash, this spells the end of monetary policy. Because once every bank holds only cash, the central bank has effectively lost its interest rate tool.
If you really want to find something innovative in the shift from positive to negative rate territory, it’s the mechanism that central bankers have instituted to inhibit the combined threat of mass paper storage and monetary policy impotence. Designed by the Swiss and recently adopted by the Bank of Japan, these cash escape inhibitors have no counterpart in positive rate land.
The mechanics of cash escape inhibitors
Cash escape inhibitors delay the onset of mass paper storage by penalizing any bank that tries to replace their holdings of negative yielding central bank deposits with 0%-yielding cash. The best way to get a feel for how they work is through an example. Say a central bank has issued a total of $1000 in deposits, all of it held by banks. The central bank currently charges banks 0% on deposits. Let’s assume that if banks choose to hold cash in their vaults they will face handling & storage costs of 0.9% a year.
