https://en.wikipedia.org/wiki/Excess_reserves#/media/File:EXCRESNS.pngExcess reserves, to my understanding, are the reserves beyond which a bank needs to comply with regulations.
It acts as a 'cushion' against loan defaults and people withdrawing deposits.
So it seems to me that excess reserves are SO huge now that a bank can safely have a huge chunk of its loans default and a huge proportion of its depositors withdraw their money in cash and they will still be solvent. Just look at that graph!
So why aren't they offering loans to everyone, no questions asked?
Also what incentives to banks currently have to take appropriate credit risks with such huge reserves?
Joe here, founder of
Magnr.com, I worked in both retail and investment banking in financial regulatory reporting so here's the facts from someone who has industry experience:
You are right in your basic understanding of what a capital reserve is. In banking we use the term Tier 1 capital to describe highly liquid cash held at the bank that is available for immediate deployment for scenarios where depositors want to withdraw etc.
Banks and Investment Banks across the world tend to follow standards set out by the Basel accords. The Basel accords are defined by the Bank for International Settlements which essentially guides regulatory frameworks for central banks around the world.
Basel III (three) is the current standard and provides guidance on how much capital a bank should retain as highly liquid Tier 1 capital. As you might expect, financial regulation is a very slow moving beast, wikipedia tells me that the third revision was defined in 2010 and is set to come into completion by 2019.
https://en.wikipedia.org/wiki/Basel_III#Capital_requirementsHere's where the huge controversy lies and the main point of debate AGAINST fractional reserve comes from. Basel III, the latest standard states that a banking institution should hold 4.5%, YES, you read that correct 4.5% of highly liquid cash with a buffer of 2.5% against its balance sheet.
So you might think that the numbers on your graph are huge. In reality, they are tiny.
Next time you visit your bank, just remind yourself, whatever your bank balance shows, 93% of the cash you deposited, isn't actually there....
( Disclaimer, financial regulation is very very very complex, what I wrote above is a simplification of what actually happens, if you want to know more, start here:
https://en.wikipedia.org/wiki/Basel_III )