Fiscal dominance:
when the debt runs monetary policy.

The bind: higher rates raise the government's interest bill

Higher interest rates raise debt-service costs as debt refinances. That builds political pressure on the central bank. It does not prove that fighting inflation becomes impossible: the budget response, debt maturity, growth and the policy framework set the trade-off.^[4]

Keep the periods and definitions straight. CBO’s February 2026 report records $970 billion of net interest outlays in FY2025 and projects over $1 trillion in FY2026. Do not relabel a forecast or a gross-interest number as the FY2025 net-outlay actual.^[4]

None of this requires a smoke-filled room or a formal decision. It happens through a thousand small "reasonable" choices: cutting a little sooner, pausing hikes a little earlier, redefining the inflation goal as a flexible average, citing financial-stability risk as the reason. The regime shifts before anyone announces it has.

The theory: "Some Unpleasant Monetarist Arithmetic"

This is not new. In 1981, Thomas Sargent (a future Nobel laureate) and Neil Wallace published "Some Unpleasant Monetarist Arithmetic" in the Federal Reserve Bank of Minneapolis Quarterly Review.^[5] Their result was counterintuitive enough to unsettle the monetarist orthodoxy of the day: if fiscal policyfiscal policyGovernment decisions about spending and taxation to influence the economy. is the dominant player, the central bank cannot permanently control inflation, no matter how disciplined it is.

The logic runs through the government's budget constraint. Picture the fiscal authority as the leader, setting deficits independently, and the central bank as the follower, stuck financing whatever gap is left. If the central bank tightens today to fight inflation, it forces the Treasury to fund its deficits by issuing more interest-bearing bonds instead of money. Those bonds compound. The debt stock grows. Eventually it hits a ceiling on what the public will hold, and at that point the only remaining financing tool is the printing press. The bank is forced to monetize, producing higher inflation later than if it had accommodated from the start.

The IMF, BIS, and OECD have since built a deep literature on exactly this hand-off, formalizing the line between a "monetary dominant" regime (fiscal policy adjusts, the bank stays free) and a "fiscal dominant" one (fiscal policy refuses to adjust, the bank gets captured).^[1][6] The empirical work finds fiscal dominance shows up most strongly where debt-to-GDP is high and central-bank independence is weak.

What breaks the independence assumption

Modern monetary policy rests on one load-bearing assumption: that the central bank is independent and free to set rates for price stability alone. Fiscal dominance is what happens when that assumption quietly fails. Four forces do the breaking:

In January 2026, former Fed Chair and Treasury Secretary Janet Yellen named the risk directly, defining fiscal dominance as "a situation where the government's fiscal position puts such pressure on its financing needs that monetary policy becomes subordinate to those needs," and warning that rising debt projections plus political gridlock are "strengthening the preconditions" for it. When a former chair of the institution is giving speeches about whether her successors can stay independent, the assumption is already under visible strain.^[7]

The markers: how to spot it happening

Fiscal dominance is rarely announced. You read it off the instruments. These are the tells worth watching:

The single cleanest gauge is net interest as a share of revenue. It is rising fast in the US: from roughly one in ten tax dollars in 2021 to about one in five today, with CBO's trajectory pointing toward one in four within roughly a decade.^[4]

If your savings earn 4% while prices rise 5% a year, the exact real return before tax is 1.04 / 1.05 − 1 = −0.95%, rounded. Your balance rises while your purchasing power falls. That does not prove the government can avoid nominal default, or that every bondholder loses equally.^[9][10]

The exit: why fiscal dominance makes sound money rational

Strip away the jargon and fiscal dominance is a simple statement: the institution that controls the money has a structural incentive to debasedebaseTo reduce the value of a currency, usually by increasing its supply or by lowering the metal content of coins. it, and once the debt is big enough, that incentive becomes a near-certainty. The "default" on an unpayable debt doesn't arrive as a missed payment. It arrives as inflation, slowly, through a currency that buys less every year.

That is the precise mechanism that makes a non-sovereign store of value rational rather than paranoid. If the policy rate will be held below inflation to keep the debt serviceable, then holding cash and bonds is a guaranteed slow loss of purchasing power. The hedgehedgeAn investment made to offset potential losses in another position, like buying gold to protect against currency declines. is an asset whose supply cannot be expanded to finance a deficit, because no committee controls it.

Central banks themselves are already making this trade. They bought over 1,000 tonnes verify×DON'T TRUST, VERIFYClaim: Central banks bought over 1,000 tonnes of gold per year in 2022, 2023, and 2024, roughly double the prior decade's pace.Verify at: World Gold Council, Gold Demand Trends ↗ Source 11 in the list belowThe institutions running fiat are themselves hedging against it. Confirm the tonnage and that it roughly doubled the 2010–2021 average. of gold a year in 2022, 2023, and 2024, roughly double their pace from the prior decade, explicitly to diversify away from debt instruments whose real value they expect to be inflated.^[11] The people closest to the printing press are buying the hardest asset they can find. That is the tell.

Gold is the historical answer to this problem. Bitcoin is the same bet with a harder cap: a fixed supply of 21 million, a debasement rate that only falls, and no central authority that can be pressured into expanding it to plug a fiscal hole. Where gold's supply grows a percent or two a year with mining, Bitcoin's new issuance halves on a fixed schedule toward zero. Against a regime whose defining feature is the temptation to print, an asset that structurally cannot be printed is the logical counterweight.