The point of this topic is to defend fractional reserve banking along the lines that Avram, Jake and I attempted to in a recent thread on the topic. If one has other arguments against FRB that do not pertain to this line of reasoning, I would appreciate it if they were taken elsewhere.
To begin with, imagine the balance sheet of two banks. The first is a FR bank, the second is a bank that performs both bailments contracts and the role of a financial intermediary. For the purpose of simplicity, equity will be ignored and the chosen quantities are entirely arbitrary. The total assets and liabilities of the banks, however, will be the same for purposes of comparison.
The FR bank has, on the asset side, $10 worth of specie, and $90 worth of loans. On the liability side the bank has $50 worth of banknotes outstanding and $50 worth of demand deposits. The 100% reserve bank, on the other hand has $50 worth of specie and $50 worth of loans on the asset side. On the liabilities side the bank has $50 worth of demand deposits (corresponding with the amount of specie) and $50 worth of time deposits.
Now, the point of this is to illustrate that the balance sheets of the two banks aren’t really that different. For the FRB the demand deposits and the outstanding bank notes (more on this later) that aren’t being spent free up resources that the bank can lend to entrepreneurs. The bank must, however, keep some specie on reserve in order to meet the demand of depositors, holders of banknotes or the interbank clearing house. For the 100% reserve bank the resources are being directly freed up by the granting of gold in the form of time deposits. The demand deposits in the 100% reserve bank cannot be loaned out and therefore do not free up any resources.
Now, from the perspective of the 100% reserve advocate the problems arise because the FR bank grants loans that are not matched by savings (implying that the position of Block and Barnett, whilst in my opinion wrong, is the only consistent position for the 100% reserve advocate). Whilst the loans granting by the 100% reserve bank are perfectly matched by the loans given to the banks, the FR bank is granting loans when the savings required may be withdrawn beforehand implying an ex ante disequilibrium.
However, the important point to notice is that whilst the FR bank may, and will, miscalculate and grant more loans than savings will admit due to a higher rate of redemption than the bank anticipates, the bank will be made aware immediatly. The fact of the matter is that if the FR bank does indeed grant too many loans and people are returning their banknotes (reducing their savings in the form of money held) more than the bank expected, the bank will notice that its reserves will begin to fall below the rate it finds optimal. Accordingly the bank will seek to stop the outflow of specie and it will consequently raise its interest rate. The last sentence is especially important since is shows how the bank will react to miscalculations of saving preferences and how fractional reserves can still keep the time market in equilibrium.
Now, the point here is not that FR banking is superior (although, I believe it to be) but that the notion that banks in a FR environment will always set the interest rate below the natural rate is wrongheaded. It remains to be seen whether or not the banking system under 100% reserves will be more, or less, capable of responding to changes that are commonplace in the market.