The Below-Zero Lower Bound
- Date Posted:
- Is Database:
- Database
@PaulKrugman The focus shifts to the cost of storing cash, which can be minimized by financial institutions. Banks could store currency for clients at low cost, akin to their historical role as goldsmiths, and potentially offer checking-like services.
Paul Krugman, "The Below-Zero Lower Bound,"The Conscience Of A Liberal, March 6, 2015, https://archive.nytimes.com/krugman.blogs.nytimes.com/2015/03/06/the-below-zero-lower-bound/
The Below-Zero Lower Bound
Further to my earlier post on negative interest rates: here’s what may be a simpler way to think about it. When central banks push interest rates on government debt below zero, the effective lower bound is the return on cash held by people who would otherwise be holding that government debt — not people looking to expand their checking accounts. So the liquidity advantages of bank deposits over cash in a vault are pretty much irrelevant. It’s all about the cost of storage.
And really, how high can that cost be? Cecchetti and Schoenholtz argue that given a little time banks or other financial institutions ought to be able to store currency for clients at very low cost — as they say, turning back into the goldsmiths from which banks as we know them evolved — and might even be able to provide some checking-like services on the side.
So it’s not quite a ZLB; but analytically and in terms of policy, a minus x lower bound, where x almost surely less than 1, isn’t all that different.



