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The Economic Cost of the Iran Conflict: GDP, Oil Prices and the Federal Deficit

March 11, 2026 / 08:21

This episode discusses the economic impact of the ongoing conflict in Iran, featuring Kent Smetters, Faculty Director of the Penn Wharton Budget Model. Key topics include budgetary costs, oil prices, and GDP loss.

Kent Smetters explains that the budgetary costs of the conflict could range from $40 billion to $95 billion, with a best guess of around $65 billion. He emphasizes that higher oil prices are a significant factor, affecting gas and heating prices in the short term.

The discussion highlights the potential GDP loss, estimated between $50 billion and $210 billion, depending on the duration of the conflict. Smetters notes that the current economic situation is different from the 1970s, as the U.S. is now a major oil producer.

Smetters also addresses the implications for the Federal Reserve, indicating that the negative supply shock from higher oil prices could lead to inflationary pressures, influencing their future rate-setting decisions.

The episode concludes with Smetters reiterating the complexities of security investments and their long-term implications for the economy.

TLDR

Kent Smetters discusses the economic effects of the Iran conflict, including budget costs, oil prices, and potential GDP loss.

Episode

8:21
00:00:00
As the conflict in Iran continues, one of the areas to focus on is the economic impact of being in a war like that.
00:00:09
Pleasure to be joined right now by Kent Smetters, who is Faculty Director of the Penn Wharton Budget Model. Kent, thanks for a
00:00:16
couple of moments today. Yeah. Good to do this. Well, so I guess, where do we start? Because there's obviously an
00:00:22
investment made by the government in taking these actions and the resources that they're using.
00:00:28
- Yeah. - But when you're thinking about the the public back here in the United States, I
00:00:32
think as simple as gasoline prices and oil prices, the way they have risen sharply in the last few days.
00:00:38
That's right. So there's really kind of two dimensions when we talk about the cost of everything. One is the budgetary
00:00:44
costs. And we're saying, over the next couple of months, it really comes down to how much things are going to get
00:00:51
escalated. We broke it down to the four different categories of resources. And we're saying maybe on the low end, it could
00:00:57
be about $40 billion of costs. And that could go up on a very high end, up to $95 billion, if, in fact, by month two, there are
00:01:07
boots on the ground and so forth. Right now, this is more about not having that many boots on the ground. Our best guess
00:01:13
right now, what we're using internally, is around $65 billion. But when we think about the economic cost— and most of
00:01:19
that's driven by higher oil prices. And so in the long run, by the way, the United States is actually better off with higher oil
00:01:25
prices, believe it or not. This is very different than the 1970s. The 1970s, we were a big importers. Now we're— we actually are big
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producers of oil, and also big producers of equipment. Think about fracking, for example. The equipment that actually goes
00:01:39
into oil exploration and extraction. But the problem is, is that that takes a long time for that to happen. Oil
00:01:48
prices would have to be high for a long time. Whereas in the short run, we're generally worse off. Because what happens? Higher oil
00:01:56
prices means gas prices go up, heating prices go up. The economy takes a bit of a hit. And so we're basically saying,
00:02:03
how much will GDP fall as a result of this, over— if this lasts for, say, a couple months? We're saying it could— our best
00:02:13
guess right now is about $115 billion. Which, you know, in a $30 trillion economy, that's not a huge amount. But on the lower
00:02:20
end, about $50 billion. On the high end, as much as $210 billion in GDP loss. It all comes down. I mean, right now the futures
00:02:27
market actually has a 20% chance that oil will exceed $100 per barrel. And so that's where you can kind of get those
00:02:35
higher end numbers. But even with the $110 or $115 billion number, potentially— - Yeah. - as you kind of alluded to,
00:02:44
we are also in a time where we are continuing to see the country's deficit grow and grow
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and grow. And here we are adding, you know, $100 plus billion dollars that we were not expecting to add in, probably,
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you know, three or four months ago. Right. And part of that is— so when it comes to budgetary
00:03:05
costs, yes, we're basically saying between $40 and $95 billion, probably our best guess right now, $65 billion. And lot
00:03:12
of that is just the replenishment of munitions and things like that. Obviously, there's deployment costs and so
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forth. We have these four different categories. And it's true, when it comes to replenishment of munitions, it
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actually turns out how fast you do that, it really affects the cost a lot. If you really want factories to replenish within
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a couple months, they have to pay a lot of overtime, they have to really crank up things, and those costs really go quite
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high. But if you're willing to wait a year to replenish, you know it can be kind of spread out a bit, but the United States
00:03:47
being a bit low on munitions to begin with, they're going to have to replenish pretty fast.
00:03:52
So then when you think about the different dynamics and segments of the economy, where is the greatest impact as we move
00:03:59
forward here? Obviously the— as you alluded to, the timing of this is very important.
00:04:04
You know, depending on how long this continues. That's right. Worth saying right now, you know, it's going
00:04:13
to be at least two months. And so— this is only two months. We obviously know this could go longer. On one hand,
00:04:18
this is not Venezuela. Another hand, it's not Iraq. It's something in between those, for sure. But nonetheless, this
00:04:27
could go on for longer. And I think we are going to take some hit to the economy. It's going to be a bit negative, and the
00:04:38
biggest hit will be in the form of gas prices or heating prices. Fortunately, mostly beyond winter at this point. But
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nonetheless, that's— those are going to be the biggest impact. So there's definitely a lot of upside uncertainty there. You
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know, the big balance, though— I mean, in all of this— I mean, this is the problem with security investments, is that they— they—
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they always look bad, right? Because if you're actually successful, people say, "We spent all this money and
00:05:05
nothing happened." Well, that's the whole point of security investments. You know, if Iran actually did get the bomb, and
00:05:11
you know, they were— clearly had the enrichment capacity for a bomb. And yes, you said, "Well, we had those inspections years
00:05:18
ago." We all know how easy it is to fool those things. Even inspectors themselves are saying we're probably not seeing
00:05:24
everything. If they really think, you know, these 13 bombs, which was the SMF capacity, even if they only had a 10% chance of
00:05:32
using those bombs, the cost of that, the extreme cost of that, is just tremendous. And so from a cost-benefit perspective,
00:05:39
we're not saying that this doesn't pass muster. It could easily pass muster. But the point is, is that there is a cost.
00:05:46
What— is there an area that maybe us as the public, or even myself as a journalist, that is going to be impacted, that we don't
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necessarily think of, that maybe is kind of underlying as something that's going to be impactful in terms of financial
00:06:06
as we move forward here? Yeah, it's a great question. I mean, there is always those
00:06:10
unknowns. And higher oil prices will also mean, you know, airline costs as they've gone up with demand and so forth. This
00:06:20
will be a negative supply shock, and so that will help drive up costs, but at the same time, less quantities will be sold
00:06:27
there. So I think anything that kind of depends on oil prices in the short run will be negatively impacted. If this really does
00:06:37
sustain higher oil prices over the longer term, believe it or not, that is actually usually a positive for the United States,
00:06:45
because we're a big oil producer now, and also we produce all the equipment that, you know— fracking was a US thing. - Yeah.
00:06:52
And so that often is very positive. Very different than the 1970s. But it's more of the scenario that we're planning for
00:07:00
that oil prices may not be high enough for a long enough period, that there's going to be a lot more equipment built. Well— you don't
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uncap wells very quickly, unless you know oil prices are going to be up there for a long time.
00:07:12
I'll finish on this quickly. But what about the impact on the Federal Reserve and their decision making process? Because
00:07:19
I think the loss of GDP plays into a role there. Yeah. And in particular, how the GDP gets lost with this negative
00:07:26
supply shock. And in particular, that will definitely be inflationary, not deflationary. And so it's— you know, when we
00:07:33
have negative demand shocks, that tends to lower GDP and lower prices. Or, that is, place less pressure on inflation, when you
00:07:41
have these oil supply shocks that we typically think these are negative supply shocks, and that actually lowers GDP and
00:07:48
raises prices. So all the more reason that they probably will be pretty modest in their rate setting going forward, and
00:07:56
probably are not encouraged to lower rates. Kent, great to talk to you as always. Thanks very much. - Pleasure.
00:08:04
Thank you. Kent Smetters, who is Faculty Director of the Penn Wharton Budget Model.

Episode Highlights

  • Oil Prices and the Economy
    Higher oil prices could lead to significant economic shifts, affecting everything from gas to airline costs.
    “In the long run, the U.S. is better off with higher oil prices.”
    @ 01m 23s
    March 11, 2026
  • Economic Impact of War
    The economic consequences of the ongoing conflict in Iran could reach up to $210 billion in GDP loss.
    “Our best guess right now is about $115 billion.”
    @ 02m 13s
    March 11, 2026

Episode Quotes

  • Security investments always look bad if nothing happens.
    The Economic Cost of the Iran Conflict: GDP, Oil Prices and the Federal Deficit
  • If Iran gets the bomb, the cost is tremendous.
    The Economic Cost of the Iran Conflict: GDP, Oil Prices and the Federal Deficit
  • Higher oil prices will also mean airline costs have gone up.
    The Economic Cost of the Iran Conflict: GDP, Oil Prices and the Federal Deficit

Key Moments

  • Oil Price Surge00:36
  • Budgetary Impact03:00
  • Security Investments05:00
  • Federal Reserve Decisions07:19

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