We can think that all spending by government is already by the creation of new money, which is the general understanding of PQE (otherwise known as Overt Monetary Financing of Government), using the concept that money is an IOU of a sovereign currency issuing government.
So, just as you or I have no use for our own IOUs, we tear them up when we get them back, neither has government. All money collected in the form of taxation or in bond sales is simply shredded. Destroyed -either physically or digitally. When govt spends, it does so by issuing new IOUs. ie Issuing new money.
So what is the point of taxation? It’s to prevent high inflation as has already been mentioned in previous posts.
And the point of selling gilts (bonds)? It is to set longer term interest rates. Generally speaking: The more that are sold by auction, the lower their price, and the higher their yield. The higher their yield the higher are longer term interest rates.
If Government wants lower interest rates in the longer term it should sell fewer gilts, yet still create as many new IOUs, as many new ££, as it needs for spending purposes. Its spending decisions have to be such that they won’t produce too much inflation, of course, which would require the raising of taxes. The balance between spending and taxation remains the subject of political debate as always.
A better idea might be to stop selling gilts completely and allow savers, ie the hitherto bond purchasers, to put their money on account with the BoE ( which is best considered as part of Treasury) and set the interest rate payable just as a high street bank would set the interest to us on our longer term savings. Short term interest rates are already set this way so the concept, and practice, just needs to be extended to include all savings. The interest rate would probably be higher for a longer deposit period, again as we might expect from our own bank.
And what about the exchange rate?
If the government offers lower interest rates the £ might be expected to fall, and higher rates will probably cause it to rise. If we stay with the idea of selling gilts, and stick with the concept that PQE is somehow different, we can say there will be less need for the government to ‘borrow’ and therefore less need to pay out interest.
This will have the same effect on the exchange rate as directly reducing interest rates. It is just looking at the process from a different perspective.
PQE, as is conventionally understood, could be part of the government’s exchange rate strategy. That is if it wants one, and that could be the subject of another discussion! If it wants a lower pound, it does more PQE. A higher £ means less PQE. It depends on what sort of trade deficit we want to run. If we are happy to run a high deficit, and there is no reason why we shouldn’t, we can keep the pound high, but if we want to reduce it we will need a lower £.