When the government “spends,” the Treasury disburses the funds by crediting bank accounts. Settlement involves transferring reserves from the Treasury’s account at the Fed to the recipient’s bank. The resulting increase in the recipient’s deposit account has no corresponding liability in the banking system. This creation is called “vertical,” or exogenous to the banking system. Since there is no corresponding liability in the banking system, this results in an increase of non-government net financial assets.
When banks create money by extending credit (loans create deposits), this occurs completely within the banking system and results in a liability for the bank (the deposit) and a corresponding asset (the loan). The customer has an asset (the deposit) and a corresponding liability (the loan). This nets to zero.
Thus vertical money created by the government affects net financial assets and horizontal money created by banks does not, although its use in the economy as productive capital can increase real assets.
The mistake that is usually made is comparing what happens in the horizontal system with what happens at the level of government accounting. At the horizontal level, debt is the basis for horizontal money creation. Therefore, it is often assumed that debt must be the basis for the creation of money by government currency issuance. This is not the case.
Reserve accounting uses the standard accounting identities, but the meaning of “liability” is not “debt.” The husband-wife analogy for Central Bank-Treasury accounting relationships is apt. Since a husband and wife are responsible for each others debts, neither can be indebted to the other. That is to say, reserve accounting is a fiction that does not represent real relationships, such as exist between a creditor and debtor in the horizontal system.
Moreover, government debt is not true debt either. At the macro level, the reserves that are transferred to banks through government disbursement are used to buy Treasury’s. That is, when a Treasury is bought, this involves a transfer of reserves from the buyer’s bank’s reserve account at the Fed to the government’s account (consolidating Central Bank and Treasury as “government”).
When the Treasury’s are sold or redeemed, the reserves that were “stored” at interest are simply switched back, creating a deposit again. It’s pretty much the same as buying and redeeming a CD. It’s just a switch from demand to time back to demand in a bank account, and a switch between reserves and securities at the government level. That is to say, the government doesn’t have to draw on revenue, borrow, or sell assets to cover its “debt,” as households and firms do. It’s just a matter of crediting and debiting accounts on the (consolidated) government books, even though it may appear that there is a financial relationship occurring between the CB and Treasury due to the accounting. However, it’s just a fiction.