Treasury is managing $40 trillion by routing around its own bond market

A $1 trillion annual interest bill ^[19] against $40 trillion of debt ^[1] implies an average effective rate of roughly 2.5% ^[1]. That is the number that turns the long end into a policy problem rather than a market one: the stock was financed at old prices, and a 30-year yield at its highest level in nearly two decades ^[3] is what the refinancing costs at new ones. Interest already absorbs about half of a $2 trillion deficit ^[2], so half of this year's borrowing exists to service the last round of it.

None of the past few weeks' actions touched that arithmetic. What changed was the plumbing. The joint operation with Japan to lift the yen, the first such action in three decades ^[4], was arranged so that neither side had to put Treasury paper up for sale. Tokyo holds more US debt than any other party in the world ^[7], and it borrowed dollars against that stockpile at the Fed's FIMA repo facility rather than shrink it ^[6]. Financial repression, in the textbook sense, means using influence over financial markets to hold interest rates below where they would otherwise sit ^[9].

George Saravelos of Deutsche Bank, who put the label on both moves ^[8], argues the pressure does not disappear so much as relocate: if the market price of Treasuries is not allowed to adjust downward, the foreign exchange price for their overseas holders adjusts instead, through a weaker dollar ^[10]. For an allocator that is a transfer, not a rescue. Compensation withheld at the long end of the curve is collected somewhere else, and the gold and bitcoin bid since the buyback was unveiled ^[15] is the price being set by people who cannot short the policy itself.

The unresolved piece sits at the Fed. Saravelos notes that measures which effectively loosen financial conditions would normally invite an offsetting tightening ^[11]. Inflation has run above the 2% target for more than five years, and several policymakers are prepared to hike ^[12]. Chair Kevin Warsh has declined to offer forward guidance ^[13], so nobody outside the building knows whether the buyback has been scored as easing at all; Saravelos reads a failure to recognise it as one more reason to be short the dollar ^[14].

The precedent is not obscure. The US and other developed economies cut their postwar debt-to-GDP ratios by exactly this route ^[16], and a survey spanning 300 years of US and UK history concluded that wars are always disaster times for holders of government debt, through inflation and repression ^[17]. Bondholders were the funding source.

What follows for duration is narrow and specific. A 30-year yield that is partly administered stops being a clean read on growth and inflation expectations and becomes partly a read on Treasury's appetite for intervention. It is a worse hedge in that state, because the variable it used to hedge is now the variable being managed, and the residual shows up in the currency the coupon is paid in.