Why Growing Out Of Federal Debt Is A Dangerous Illusion

Forty trillion has a theatrical ring to it. People hear the figure, shrug or panic, and then a familiar line arrives on television: the number is not magic, the economy can grow its way out, and this year’s deficit-to-output ratio is already improving. I have heard versions of that speech for years. The delivery changes. The arithmetic underneath it does not get kinder just because someone speaks in a reassuring tone.

The Growth Story Meets The Balance Sheet

The latest pitch has a few moving parts. Official debt crossed a headline threshold. A cabinet official then argued that the ratio of the official deficit to gross domestic product had eased, that some of the red ink was temporary, and that faster write-offs for factories, equipment, and farm buildings should be treated as investment rather than ordinary outlays. Pull back the slingshot, the argument goes, and kinetic energy arrives when plants come online.

That last image is catchy. It is also incomplete. A tax preference that raises after-tax returns can matter. I will not pretend incentives are irrelevant. The trouble starts when those preferences are financed by larger borrowing rather than by a genuine cut in the government’s claim on real resources. Private saving that gets absorbed by the Treasury is not available, in the same period, to finance an extra machine on a factory floor.

Giving investors a break while the budget still consumes the extra saving is not a free expansion of the capital stock. It is a reshuffle of claims on the same pool of thrift.

In my experience, conversations about this topic go off the rails when people treat the official cash deficit as the whole story and treat a single-year dip in a ratio as a trend. Ratios can look calmer while the stock of obligations keeps climbing. Growth can look stronger while the physical capacity to support higher future taxes barely budges.

Deficits And Net Saving Are Not Separate Worlds

Here is the unglamorous core. If households and firms refrain from consuming, labor and materials can be devoted to adding capital goods. If the government runs a large deficit, it bids for those same resources. Whether the government extracts them through taxes or through borrowing is a secondary question for the physical quantity of net investment. Either channel can crowd out the accumulation that would otherwise have occurred.

Look at the long sweep rather than last year’s talking point. For a stretch after mid-century, net saving as a share of net national product sat in a healthy band, often in the low double digits, while the federal books stayed close to balance. Then net saving peaked and began a long descent. By the present decade it has hovered near zero. That collapse did not happen in a vacuum. It tracks the arrival of persistent, sometimes enormous, federal shortfalls.

There was a pause. During one late-1990s stretch the budget climbed back toward surplus and net saving recovered part of the lost ground. After that the pattern turned ugly again, with violent spikes around the financial crisis and the lockdown years. Anyone can truthfully say that one recent year looked a touch less bad than the year before. Keeping that modest improvement for a few more years would still leave the country short of the net-saving rate seen just before the pandemic.

Chronic red ink did not explain every percentage point of the decline. It explained enough. Call it roughly half if you want a rough share. The rest involves demographics, household behavior, corporate payout culture, and measurement quirks. Still, pretending tax-rate cuts for investors can offset uncontrolled spending is a habit that has survived many administrations of both parties. I find that bipartisan part the most wearying. The slogans differ. The capital stock does not care about slogans.

Why The Official Debt Figure Undersells The Problem

The headline stock of Treasury securities is already large enough to dominate any dinner-table argument. It is not the full ledger. Trust funds for retirement and health programs, plus federal employee promises, carry enormous unfunded gaps when you discount future shortfalls to the present. Trustee reports have put those additional holes in the tens of trillions. Add them to the bonds already outstanding and you are looking at a burden that can exceed one hundred twenty trillion in a conservative stacking of the claims.

Servicing that pile with ordinary tax rates would require a growth miracle that no serious forecast currently shows. Two of the major trust funds are on a timetable that politicians prefer not to discuss in complete sentences. Insolvency dates in the early 2030s are not a rumor from the internet. They sit in official tables. Benefit formulas and payroll taxes cannot both stay untouched if those dates arrive on schedule.

• Marketable debt is the visible mountain everyone photographs.
• Unfunded social insurance claims are the larger ridge behind it.
• Interest costs rise when rates normalize even if primary deficits shrink only a little.
• Cost-of-living rules transmit price inflation straight into future outlays.

So when someone says there is nothing magic about a round number, they are right in a narrow sense. Forty is a digit string. The magic, if any, would be required to make the broader obligation set sustainable without either higher effective taxation, lower real benefits, or a collapse in the purchasing power of the unit of account. Those are the real options. Cheerful language about factories coming online does not add a fourth.

Deficit To GDP Is A Convenient Yardstick, Not A Verdict

Yes, the official deficit as a share of GDP ticked down from one mid-sixes reading to something closer to the high fives. On a seventy-five-year chart that movement is a wrinkle. It is not a regime change. The series still looks like a long deterioration interrupted by rare consolidations and then by crisis spikes.

GDP is also a generous denominator. It includes depreciation. Net national product sits closer to what residents actually earn and what a tax system can more cleanly touch, because wear-and-tear allowances are not income in the same way and because overseas earnings of residents do enter a national measure. Over decades GDP has grown a bit faster than NNP. Using the larger number makes the deficit ratio look slightly less alarming. That is a small distortion. The larger mistake is methodological.

Cherry-pick a popular metric. Pair it with one year’s change. Announce a turnaround. Sound theory does the opposite. It starts from purposeful human action: people consume, save, and invest under constraints. Then it asks which measured series best tracks those constraints. Then it asks which combination of causes could produce the observed path. A one-year improvement cannot carry a multi-decade claim. Time-series work on these books, done without political makeup, still points the wrong way.

Temporary Items And The Slingshot Metaphor

Some of the recent deficit was tied to tariff refunds and to the revenue hit from immediate expensing. Those points are not invented. Refunds can fade. Expensing front-loads deductions. If the underlying investment is real and productive, the tax base can widen later. I have no quarrel with that sequence in a textbook.

The textbook, however, assumes the extra investment is not offset by extra public absorption of saving. Immediate expensing financed by a larger deficit is not the same event as immediate expensing financed by a spending cut of equal present value. One version can enlarge the private capital stock. The other version often just changes the identity of the borrower.

Think of a warehouse of steel, concrete, and skilled hours. Those inputs can become a plant that raises after-tax returns for decades. They can also become a government project with a political constituency and a vague payoff. Deficits do not stamp the inputs with a moral label. They redirect them. Calling the redirection an investment in the future does not settle the empirical question of whether measured output later can service the added claims.

Perhaps the most interesting aspect is how quickly “investment” becomes a synonym for any deduction that happens to be popular this season. Roads can be investment. Software can be investment. A transfer wrapped in an industrial slogan can be consumption with better branding. Distinguishing those cases is the whole job. Ratios will not do it for you.

What Inflation Does To The Appearance Of Growth

Nominal GDP can sprint when the unit of account is being diluted. Faster creation of fiat balances and of bank-made substitutes lifts money spending. Price indexes eventually catch a large part of that lift. In the meantime, headline growth looks athletic. Trust-fund obligations also rise because statutes index many benefits to prices. Boom phases misdirect capital. Bust phases blow holes in the budget and in measured net saving as write-offs land.

That cycle is not a theory I invented last week. It is the ordinary rhythm of a credit system that can expand claims faster than the underlying structure of production. Inflation can make old bonds easier to repay in real terms. It cannot make real factories appear. If the goal is to erase liabilities by wrecking the currency, say so. Do not call the process growth.

Monetary expansion can change the date on a GDP print. It cannot substitute for households setting aside goods and time so that more tools exist next year.

I have found that audiences grasp this faster with a kitchen analogy than with national-account jargon. If you keep inviting more guests and paying the grocer with IOUs, a bigger receipt at the register is not proof the pantry is fuller. It may only prove the grocer raised prices and you borrowed the difference. National accounts can look like that receipt.

Supply-Side Claims Need A Spending Counterpart

There is an older political refrain that tax cuts pay for themselves through growth. Sometimes revenues do surprise to the upside after a rate cut, especially if the previous schedule was punitive at the margin. The historical American pattern since the mid-1950s is still dominated by a failure to restrain outlays. Rate cuts without a matching reduction in the government’s real draft on resources leave a residual that shows up as debt and as weaker net saving.

That is not an argument for high statutory rates as a virtue. High rates punish accumulation too. The point is narrower and, I think, more honest: the physical capital stock does not expand merely because the political coalition that prefers lower rates is speaking this month. Someone still has to refrain from consuming. If the public sector will not refrain, the private sector’s extra thrift is drafted.

1. Identify whether a tax change raises after-tax returns at the margin.
2. Ask what happens to the deficit in present-value terms after behavioral responses.
3. Track net saving and net investment, not only nominal GDP.
4. Separate price-level effects from additions to the stock of tools.
5. Put unfunded trust-fund gaps on the same page as marketable debt.

Skip any one of those steps and the story becomes too easy. Easy stories travel well on business television. They travel poorly through a bond market that has to roll trillions and through a labor market that has to staff the plants the speeches keep promising.

Reading The Seventy-Five Year Arc Without Makeup

Start in 1950. Net saving is substantial. Federal accounts are noisy year to year but not structurally explosive. Move through the 1960s. The saving rate peaks and turns down as spending ambitions widen. The 1980s and early 1990s bring deficits around five percent of net product, a scale that would have looked New Deal-like to an earlier generation. A brief consolidation follows. Then the twenty-first century arrives with crisis after crisis and a baseline that never quite returns to the old discipline.

That arc should humble anyone selling a one-year improvement as destiny. It should also humble anyone who talks as if one party uniquely discovered fiscal virtue. The green line on a long net-saving chart does not vote. It records whether a society is adding to its tools after maintenance and after the state has taken its cut.

When that line sits near zero, speeches about wealth as after-tax return on capital start to sound unfinished. After-tax return on what enlarged stock, exactly? If the extra return is a deduction against a tax base that is itself supported by borrowed consumption, the loop is tighter than the metaphor admits.

Interest, Roll-Over Risk, And The Quiet Constraint

Even if primary deficits narrowed for a few years, the stock already issued must be refinanced. A higher average coupon on that stock eats a larger share of revenues. That is not drama. It is coupon math. Countries can live with high debt ratios for a long time when their borrowing is in their own currency and their institutions still attract cautious capital. Living with it is not the same as growing out of it in any strong sense.

Roll-over weeks become more frequent as maturities shorten during periods of official preference for bills. Foreign official buyers can pause. Domestic banks can absorb more paper, which then ties financial stability to the same sovereign that already dominates the fiscal conversation. None of that appears in a sunny sentence about factories and farm structures. It appears later, in the bid for auctions and in the political fight over the debt ceiling that everyone pretends is ceremonial until it is not.

I do not think markets will “wake up” on a single Tuesday. Pressure arrives as a sequence of slightly worse auctions, slightly richer term premia, and slightly more awkward interviews. By the time the phrase “growing out of it” sounds thin even to its authors, the adjustment options are uglier than they were at forty trillion.

What Would An Honest Consolidation Look Like

Not a sermon. A checklist. Slow the growth of the largest mandatory programs with rules that are phased and explicit. Pair any investment-friendly tax design with a present-value spending offset. Stop treating inflation as a stealth solvent. Publish a balance sheet that puts discounted social insurance gaps next to Treasury securities so voters see one number that is at least in the right neighborhood.

Would that be popular? Of course not. That is why the growth slogan returns every cycle. It asks nothing visible of current beneficiaries and everything of an unnamed future. I have watched that bargain hold for a long time. It holds until net saving is exhausted and the remaining trick is faster money creation. At that stage the language stays optimistic. The pantry does not.

A rough hierarchy of seriousness:
  1. Net addition to tools after depreciation
  2. Present-value budget including trust funds
  3. Deficit ratio using a net income concept
  4. Headline deficit ratio to GDP
  5. One-year change in any of the above

If a briefing starts at item five and never reaches item one, you are not being given an analysis. You are being given a press line. Treat it as such.

Why This Argument Keeps Coming Back

Because the alternative requires naming programs. Because capital theory is harder to televise than a plant ribbon-cutting. Because both coalitions have used the budget as a coalition-maintenance tool rather than as a constraint. Because measured output can be flattered by prices. Because a round debt number is a better prop than a discounted liability schedule that needs a footnote.

There is also a psychological piece. People want the conflict between present consumption and future capacity to dissolve. Growth talk offers dissolution. It says you can have the transfer, the preference, the project, and the expanding tax base. Sometimes, for a few years, parts of that sentence come true. The long American series on net saving says the full sentence has not been true as a governing rule.

I will put a personal marker down. I am not impressed by calendar-year “fiscal consolidation” claims that leave the structural path intact and leave trust-fund math untouched. A smaller flow gap in a strong nominal year is welcome. It is not a strategy. Strategy would show up as a multi-year rise in net saving and a shrinking present-value hole. We do not have that chart. We have a nicer interview.

Practical Takeaways For Readers Who Still Have To Plan

You cannot vote the capital stock into existence, but you can refuse to confuse a GDP print with household solvency. If your planning horizon includes retirement transfers, assume formulas will be adjusted, not that output growth will quietly refill every account. If you run a firm, treat expensing rules as real but treat the interest-rate path and the tax-base politics as jointly determined with the debt stock. If you follow markets, watch auction tails and term premia with more care than a single deficit-ratio decimal.

• Prefer net concepts when someone waves a growth victory.
• Ask what happened to private thrift, not only to revenues.
• Keep unfunded promises in the same mental ledger as bonds.
• Separate relative-price changes from more shovels and more skills.
• Treat one-year ratio moves as weather, not climate.

None of that requires a conspiracy theory. It requires a stubborn habit of asking which real resources moved. Money numbers will always be easier to rearrange than steel and hours. Officials will always prefer the easier set. Readers do not have to follow them there.

The Closing Tension Worth Sitting With

Can an economy grow while carrying a heavy public debt? History says yes, for a while, under specific conditions: credible institutions, a still-positive saving rate, a currency others still want, and a political system that eventually trims the primary gap. Can it grow its way out of a combined book of marketable debt plus giant unfunded social claims without any of those trims and without a monetary accident? That is a different question. The recent official answer has been a metaphor about a slingshot.

Metaphors do not amortize principal. They do not staff a machine shop. They do not keep a trust fund solvent past a date already printed in a trustee table. If the next few years deliver genuine net investment and a lasting rise in thrift, I will be glad to update the tone of this piece. Until the green line on that long chart leaves the floor, I will keep treating “we will grow out of it” as a sentence that sounds finished and is not.

The round number was never the spell. The spell is the hope that arithmetic will blink first. Arithmetic has not earned a reputation for blinking.