a bank can be perfectly well capitalized and hold no reserves with the central bank. canadian banks have no reserve requirements. this hasn't got anything to do with capital. reserves are just a required percentage of deposits to be held as balances with the fed and as vault cash to handle daily withdrawals. this has absolutely no relationship with a bank's capital position. this last reply from you really highlights the problem here.
"Reserve requirements place not such limit on lending for reasons I have explained often. Commercial banks hold reserve accounts at the central bank for the sole purpose of facilitating the payments system (clearing house). Many countries have no reserve requirements other than the accounts must not be in the red on a sustained basis. The US is currently considering eliminating the positive requirements.
Reserve requirements are an artefact of the old gold standard and are irrelevant in the current monetary system. They do not reduce bank risk nor do they comprise a buffer that can be drawn on when there is a run on a bank.
To understand why reserve requirements do no constrain lending you have to understand how a bank operates. Banks seek to attract credit-worthy customers to which they can loan funds to and thereby make profit. What constitutes credit-worthiness varies over the business cycle and so lending standards become more lax at boom times as banks chase market share (this is one of Minsky’s drivers).
These loans are made independent of the banks’ reserve positions. Depending on the way the central bank accounts for commercial bank reserves, the latter will then seek funds to ensure they have the required reserves in the relevant accounting period. They can borrow from each other in the interbank market but if the system overall is short of reserves these horizontal transactions will not add the required reserves.
In these cases, the bank will sell bonds back to the central bank or borrow outright through the device called the “discount window”. There is typically a penalty for using this source of funds. At the individual bank level, certainly the “price of reserves” may play some role in the credit department’s decision to loan funds. But the reserve position per se will not matter. So as long as the margin between the return on the loan and the rate they would have to borrow from the central bank through the discount window is sufficient, the bank will lend.
So the idea that reserve balances are required initially to “finance” bank balance sheet expansion via rising excess reserves is inapplicable. A bank’s ability to expand its balance sheet is not constrained by the quantity of reserves it holds or any fractional reserve requirements. The bank expands its balance sheet by lending. Loans create deposits which are then backed by reserves after the fact. The process of extending loans (credit) which creates new bank liabilities is unrelated to the reserve position of the bank.
The major insight is that any balance sheet expansion which leaves a bank short of the required reserves may affect the return it can expect on the loan as a consequence of the “penalty” rate the central bank might exact through the discount window. But it will never impede the bank’s capacity to effect the loan in the first place."