GSM-ASA for short, instead of MMT modern monetary theory. Many thanks to @Demetrios Gizelis @Richard Corin @Jon Underwood @Marcus Champ The government makes a budget every year with outgoings for police and social security and stuff. And as income, postulates - guesses- how much tax will be paid during the same calendar period. Day one of the budget starts, and the government instructs the treasury *or whatever department deals with payments, to pay out from the account at the central bank. As money is coming on from taxes, a lot in January, the amount is paid out. Where do taxes come from? Economic activity of ordinary citizens However, next month, taxes are slow coming in. The treasury* needs to BORROW. how does it do that? Issue bonds. The treasury prints the sum on a nice paper, a bank or otherwise certified lender dips into their coffers and pays the amount to the treasury*, gets the paper instead. Now. Where did the bank get that money? From profits. Where did the profits come from? From offering services like lending and making a profit on them? From whom did the profits come? Ordinary citizens. What will banks get from lending the money? Dividend. So - correct me if I am wrong about this theory - the government, to pay its already budgeted (i.e. agreed outgoings) borrows money from banks - paying them a dividend every month - money that banks have got by making profits on services to ordinary citizens. So - correct me if I am wrong - banks make profit on money transactioning two times. I love this theory it is really neat. But it also says that - as citizens are going to pay one way or another - that it might be better to skip private banks altogether as they don't seem to add much value? Citizens are going to pay the budget via taxes, better to do that directly than have these banks as middle men.