High Household Spending Responses Do Not Make Stimulus Self-Financing

Valerie Ramey argues that the fiscal responses to the global financial crisis and COVID should be judged not only by their immediate economic effects, but by the debt left behind. Her central concern is a ratchet: crisis-era borrowing pushes debt-to-GDP ratios sharply upward, while the subsequent recovery does not restore them to their earlier levels.

“Virtually all” stimulus packages were deficit-financed, Ramey says. That follows from the logic of stabilization policy. If government sends households checks while raising taxes at the same time to fund them, it partly offsets the intended increase in spending. Borrowing allows support to arrive without an immediate reduction in purchasing power elsewhere.

The harder question is whether the borrowing can pay for itself. Ramey notes that recent papers suggest deficits could be self-financing if fiscal multipliers were large enough: stimulus-induced growth would ultimately generate sufficient revenue to cover the debt. In her account, that has not happened. Inflation has reduced some debt burdens because debt is nominal while GDP rises with prices, but she treats inflation as a tax rather than evidence that stimulus financed itself through real growth.

The debt charts Ramey displays trace gross debt-to-GDP ratios from 2000 through projected values in 2028. They mark 2008, the first year of stimulus payments during the global financial crisis, and 2020, when COVID-era stimulus began. In both periods, the series break upward. Ramey says slower GDP growth contributed to the rise, but so did increased government spending and reduced tax collection.

For advanced economies overall, the post-financial-crisis ratio settles at a higher level rather than returning to its pre-crisis path. The European Union’s ratio declines somewhat after what Ramey calls fiscal consolidations, though not enough to reverse the overall rise. After COVID, the ratios decline from their initial spike. Ramey attributes that decline to inflation: because debt is stated in nominal terms, rising prices raise nominal GDP and lower the measured debt-to-GDP ratio.

The United States is a large part of the advanced-economy aggregate, Ramey says. Its debt-to-GDP ratio began around 60 percent in the early 2000s, rose after the financial crisis, and then settled at a new level. COVID created another jump. Inflation brought the ratio down somewhat afterward, but her chart projects it to keep rising. Population aging is a major contributor to that projected increase, she says. Still, her own calculation is that stimulus spending during the global financial crisis and COVID accounts for roughly 27 percent of the current debt-to-GDP ratio.

Ramey invokes the “Ferguson rule,” which she describes as the proposition that a country spending more on interest than on defense is in trouble. Her point is that emergency borrowing can remain a continuing claim on public resources after the recession or public-health crisis that prompted it has passed.

Keynesian fiscal stimulus begins with a recessionary diagnosis: aggregate demand has fallen. Consumption and investment are too low, and government can offset part of that weakness through spending or transfers that raise demand.

Valerie Ramey traces the framework to the Great Depression, when John Maynard Keynes concluded that existing models could not explain the scale of the downturn. His central behavioral assumption was that consumption depends heavily on current disposable income. The relevant parameter is the marginal propensity to consume, or MPCThe share of an additional dollar of income that a household spends.: how much of an additional dollar a person spends.

Keynes used an MPC of about 0.8. In the simplest version of the model, that implies a government-spending multiplier of five. A government dollar becomes someone’s income; if that recipient spends 80 cents, it becomes income to another person, who spends another fraction of it. The sequence of spending continues through the economy.

Keynes himself thought practical multipliers were lower—perhaps between two and three in the United States and United Kingdom—and Ramey notes that he based that judgment partly on econometric evidence available at the time. World War II then appeared to offer powerful support for the broader proposition: government spending rose enormously, unemployment fell, and depressed economies emerged from the Depression. Ramey says that experience helped persuade economists and policymakers that spending and taxation could stabilize business cycles.

The Keynesian consensus later lost ground for two related reasons. Milton Friedman’s permanent income hypothesis, supplemented by rational expectations associated with Robert Lucas and others, held that households do not decide consumption solely from current after-tax income. They also consider their expected long-run resources.

A one-time transfer therefore need not produce an immediate, proportionate burst of spending. Ramey illustrates the distinction with a $1,000 payment. Under the simple Keynesian assumption of an MPC of 0.8, its recipient might promptly spend $800. Under the permanent-income view, the recipient recognizes that the payment does not permanently change lifetime resources, saves much of it, and spreads spending over time.

At the same time, monetary policy became the main stabilization tool after the 1970s. Ramey points to evidence associated with Friedman and Anna Schwartz suggesting that monetary policy could have powerful effects on output. She also emphasizes institutional speed: fiscal packages must pass through legislatures balancing many objectives, while monetary authorities can focus more narrowly on prices and employment.

The global financial crisis returned fiscal stimulus to the center of policy because conventional monetary policy reached a constraint. Valerie Ramey says Federal Reserve Chairman Ben Bernanke lowered rates during 2008 until they reached the zero lower boundThe point at which conventional nominal interest-rate cuts can no longer go below zero.. Policymakers could no longer rely on the usual interest-rate tool and returned to the Keynesian fiscal-stimulus playbook.

They did so without a settled modern estimate of fiscal multipliers. Research on fiscal policy had thinned while monetary policy was dominant. Ramey says that she and the relatively small group still studying fiscal policy had often used it to distinguish Keynesian from neoclassical models, rather than to measure the effects of emergency packages. The crisis produced what she has called a “Renaissance in Fiscal Research.”

The empirical hinge in that revival was household spending behavior. Researchers used natural experiments and other settings to measure how households responded to temporary income changes. Many papers rejected the permanent income hypothesis, Ramey says, and some interpreted the relevant estimates as high MPCs: recipients appeared to spend a substantial share of a temporary payment.

Ramey cites MPC estimates of roughly 0.4 to 0.66 for nondurable consumption following the 2001 Bush tax rebate, and estimates of 0.7 to 0.9 for the 2008 rebate. She also cites an estimated MPC of 0.8 from a 2011 Singapore natural experiment and estimates between 0.5 and 0.7 among Norwegian lottery winners.

Those estimates led to theories emphasizing liquidity constraints. A household may possess substantial assets while lacking ready access to them—for example, if wealth is held in a 401(k) retirement account. A transfer check can then provide spendable funds that allow more immediate consumption than the permanent-income hypothesis would predict.

Macroeconomic models incorporated this distinction by including heterogeneous households: some with high MPCs and binding liquidity constraints, others behaving more like the permanent-income household. When calibrated with the high MPC estimates from micro studies, Ramey says, these models could generate sizable fiscal multipliers—sometimes as high as two, though not the mechanical multiplier of five implied by the simplest Keynesian framework. That combination of evidence and theory helped support large stimulus legislation during both the financial crisis and COVID.

But Ramey distinguishes among three questions that are often run together. An MPC measures how much of an additional dollar a household spends. A fiscal multiplier measures the resulting change in total output relative to government spending or transfers. Debt-to-GDP records the fiscal balance-sheet outcome after borrowing, growth, inflation, spending, and tax collections have played out.

High household MPC estimates can therefore make near-term stimulus more plausible without establishing that the borrowing will finance itself or that the resulting debt will later be retired. In Ramey’s framework, debt persistence and interest costs belong alongside near-term output effects when the policy is assessed.