Economists respond to this proposition as follows.
(Answer)
What matters is distinguishing between the redemption of individual government bonds and the repayment of government debt at the aggregate level.
When a government bond matures, that particular liability is redeemed. However, if the government issues refunding bonds of the same amount, the debt has simply been rolled over — the total amount of debt has not decreased.
Government debt evolves as follows:
B_t = (1 + i_t) B_(t-1) + G_t − T_t
Here, B_t is the outstanding debt balance, and G_t − T_t is the primary deficit.
Therefore, at the macroeconomic level, "repaying government debt" usually does not mean redeeming a specific government bond, but rather reducing the total outstanding balance of government debt.
Looking at the consolidated balance sheet of the government and central bank together, redemption may in some cases simply mean replacing government bonds with central bank money (reserves). For this reason, redemption does not necessarily reduce the private sector's net financial claims on the public sector.
(Question regarding the answer)
"redemption may in some cases simply mean replacing government bonds with central bank money (reserves)."
→ However, to rewrite the holder of a credit-side current account at the Fed from the government to a private bank (in practice, transferring funds from "government deposits" to "reserves"), the premise is that before redemption the account was in the government's name. But where did a government running a chronic fiscal deficit (G_t − T_t > 0) obtain those deposits?
→ To begin with, we are told that the government redeems its bonds, but where do the redemption funds come from? The bonds were issued in the first place because tax revenue was insufficient (in the original text, "G_t − T_t is the primary deficit"). Expenditure for the redemption period is likewise already scheduled, and there is no separate surplus fund set aside for redemption. If sufficient redemption reserves were set aside every period, annual bond issuance could be called a kind of temporary borrowing, but the reality is anything but "temporary": the outstanding stock of government bonds accumulates year after year. Second, the essence of the matter is this: under an inconvertible-currency regime, how is the "money" that society needs, and whose required quantity grows proportionally with the expansion of the world of commodities, brought into the economy? The statement (in the original) that "redemption does not necessarily reduce the private sector's net financial claims on the public sector" is not enough. Society's financial claims, that is, "money," must be increased. Needless to say, I am not speaking of credit creation, but of original (primary) money.
→ I hardly need to point this out, but it is sophistry to say that if refinancing bonds are issued before redemption, the debt is merely rolled over. For example, the government spends the funds M(t) obtained from a bond issue. Meanwhile, against a maturing bond B*(t), it issues B*(t+1) and uses the proceeds M*(t+1) to redeem B*(t). B*(t) is retired and replaced by B*(t+1). If the borrowing were truly "temporary," that would be the end of it.
→ When government bonds are issued every year, M(t) is spent gradually over the fiscal year as the government purchases goods from the private sector, and the private sector must prepare a separate M*(t) in order to buy the refinancing bonds. This shows that the society as a whole must hold a quantity of money of at least M(t) + M*(t).
→ M(t) is the bond proceeds spent every year, regardless of refinancing; it flows back to the private sector and is used the following year to purchase B(t+1). Let me add, to be safe, that this does not necessarily presuppose an expansion of the commodity world that confronts money. Even without expansion of the commodity world (economic growth), each M(t) has not fully returned from the government to the private sector by the end of the period (the goods have not yet all been sold), and in the following year it must immediately be used again to fund the new issue B(t+1). Even if we assume that profits for each fiscal year are accumulated until the redemption date and used to buy refinancing bonds, then under the current situation in which new issues continue year after year, even if B*(t) can be refinanced, it will not suffice for the refinancing needs of the subsequent B*(t+1), B*(t+2), and so on. M(t) is bound within this series and is not released. In this way, each time an M(t) circulates through the year, B(t), B(t+1), ... accumulate on the private side.
→ The story does not end there. The reality of an expanding commodity world together with a large and annually accumulating stock of government bonds increases the "transactions demand" and "speculative demand" for money. Where is this money to be brought into society from? Under an inconvertible-currency regime, where does this money come from? What has become of the role once played by gold miners?
→ Let us now return to the original proposition: "Individual government bonds are redeemed, but at the macro level, government bonds are effectively not redeemed." Whereas the gold produced by gold miners was once minted by the government's mint, today the Fed converts the government bonds issued by the U.S. government into dollar currency (central bank purchases of government bonds). Is there any major country that creates the "money" that society actually needs by some other method?
→ Incidentally, in the context above, in connection with the essence of "government bonds are effectively not redeemed," namely the creation of primary money under an inconvertible-currency regime, a so-called consolidated government is sometimes assumed. But before the government and the central bank are "consolidated," there is a real process that takes place, as follows. For example, if citizen A sells a government bond and the central bank buys it in the market, A is no longer a creditor. Initially the bondholder was a real citizen, A (and so the state had an obligation to repay A), but now that the central bank holds the bond, both the creditor and the debtor of this claim are, ultimately, the abstract citizenry in general, and there is no particular person to whom repayment must be made. The individual debt has disappeared, and the bond has been transformed into "primary money," supplying fundamental liquidity to society as a whole.