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Inflation Guy’s CPI Summary (Dec 2023)

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I’m changing the way I do the monthly CPI analysis. Doing it live for an audience was always stressful, especially with the inevitable data issues from time to time. Of course, as an inflation investor/trader I’ll still do it live; I just don’t have an audience. The nice part about doing it live was that the monthly report had a very similar structure to it with the same charts all of the time, and that will change. But it also means that I can lead with the important stuff sometimes, like this month. So I’m going to start today’s discussion of the slightly above-consensus CPI report (+0.31% on core, vs expectations for +0.25%) by saying the quiet part out loud:

Rents aren’t collapsing. They are decelerating, and they will continue to do so, but they are not going into deflation. Everyone today seems to be acting as if this is some huge shock, but it really isn’t. The only reason to ever have thought there would be rental deflation in an environment of housing shortage was that some of the high-frequency rent indices (which are not designed to be high-quality data; they’re data derived from a business that have been packaged as if it is high-quality data) suggested declines in rents, and an influential article – I talked about it in episode 74 of the Inflation Guy podcast – popularized the notion that you could get more information from the BLS by looking at less data. But the cost side has never improved for landlords – in fact, it keeps getting worse – so it was hard to see how there would be a general decline in rents. In some parts of the country, from which people are migrating away, e.g. perhaps inner cities, rents may fall. But those people have to go somewhere. Big migration means the housing stock is now all in the wrong places, and rents go up when there’s a shortage faster than they fall when there’s a glut.

Anyway, both my costs-based rents model above and my old rents model below suggest the same destination for rents – middle of this year or just afterwards, y/y rents should get to around 2-3%. That’s a lot lower than the current run rate for rents, of +0.47% m/m for OER and +0.42% for Primary rents this month, but it’s also far above what the general expectation has been for this large part of the consumption basket. Moreover, it appears that the longer-term pressures are for that part of inflation to scoop back higher, not lower.

So, today’s rents number was a little surprising, but not that surprising. Some are attributing the miss today to ‘just rents,’ as if it’s okay for the largest part of the CPI to have a trajectory that’s confounding many forecasts, but it wasn’t just rents. Median inflation was +0.42% m/m, keeping the y/y number above 5%. And three of the last four figures have been in that zone. Median should keep decelerating too, but it is not collapsing.

Now, I’ll note that Used Car prices were weird, again. They rose +0.49% m/m, when I (and most folks) had expected a decline. They’ve been a bit squirrelly for a while, with official inflation printing higher than the private surveys fairly persistently for 6-9 months. But on the other hand, airline fares have been persistently squirrelly lower compared to jet fuel, so these two things were ‘errors’ in the opposite direction. This month, airfares also rose, by about 1% m/m – but that was right about where it should have been given the change in fuel prices and not a surprise.

Now, the diffusion stuff is looking better, and supports the idea that median inflation will continue to decelerate.

Such a deceleration has been and continues to be my forecast. I expect median inflation to settle in the high 3%s, low 4%s, and be hard to push much below that. In the near-term, meaning maybe by early H2 of this year, we could get some numbers a little below that as the rent deceleration continues. But then the hook happens. It will be hard to get inflation below 3% for very long, especially if the Fed decides to stop shrinking its balance sheet and money supply growth recovers.

So the system is normalizing after COVID (and more relevantly, after the spastic and dramatic fiscal and monetary response to COVID). But normal is no longer sub-2%. Core services ex-shelter (so-called “supercore”) abstracts both from the deceleration in housing and the sharp drop in core goods, and it is hooking higher (this is partly because Health Insurance had been artificially depressing it and that effect is waning).

Supercore is unlikely to really plunge either. Wages remain robust. The Atlanta Fed just released its Wage Growth Tracker, at 5.2% for the fourth month in a row. The spread between median wages and median inflation, which had been stable around 1% for a long while, is heading back there (see chart). So again, we’re looking at something around 4% for median inflation unless wages start to decelerate…and there’s as yet no sign of that.

The bottom line is that while this number was only a little bit surprising, it was surprising for all the wrong reasons. There is nothing in this figure that suggests the Fed can comfortably abandon a tight-money policy and think about easing soon, and I don’t expect them to do so.

  1. Andy
    January 11, 2024 at 12:56 pm

    It seems to me that there was an awful lot of discussion by some folks about how inflation was falling so rapidly that the Fed would soon need to be concerned with deflation. I wonder if that discussion continues 🙂

    • January 11, 2024 at 1:06 pm

      I don’t think that discussion was ever motivated or informed by actual analysis. Or, if it was…they should seek better analysis!

  2. Mark Woodworth
    January 11, 2024 at 1:49 pm

    W.R.T rents unlikely to experience deflation due to housing shortage – is there a shortage of housing? Or just a shortage of detached single family housing? Both housing units/population (single + MF) and MF construction are historically high. MF construction is the highest since the 70’s.

    • January 11, 2024 at 2:46 pm

      Construction isn’t finished units, and don’t forget to add 10 million to your denominator! Also, remember that if you do that ratio nationwide, during a period of significant population migration, it will be higher than the ‘true’ ratio in places losing people and lower than the true ratio in places gaining people. But in the places losing people, rents don’t tend to fall as fast in a (local) glut as they tend to rise in a (local) shortage.

      It may well be that I’m looking at the wrong things. But so far, those things have given the right signals so I’ll keep riding them!

  3. Kevin
    January 11, 2024 at 8:57 pm

    Thanks for the insightful CPI analysis. How would base effect factor into the CPI this year? 2022’s high CPI helped make 2023 CPI lower. So would this year’s CPI be higher compared to 2023?

  4. Noah
    January 11, 2024 at 10:17 pm

    Market seems to care more about PCE as that’s the FOMC favorite inflation indicator, I would assume they will look at both but what’s your view if we see a bigger than normal wedge between CPI and PCE due to rents being sticky and have a smaller weight in PCE?

  5. Noah
    January 11, 2024 at 10:28 pm

    Whats your take on PCE? If rents stay sticky a bigger wedge can remain between CPI and PCE as it has a lower weight in PCE.

    • January 12, 2024 at 9:29 am

      Yes, but on the other hand PCE has a bigger weight in medical, which could also prove sticky with wages. You’re probably right though in the near-term. Either way, it would be hard for the Fed to ignore it if median CPI, sticky CPI, and other measures all remain well above their target ranges. To be sure, if the stock market get weak or a bank fails or the economy looks shaky then they’ll use whatever argument they can to be easy but on the inflation argument alone I don’t think they’ll ignore CPI just because PCE looks a little better.

      Good question!

      • Bob
        January 16, 2024 at 12:01 am

        I notice multi family starts dwarf anything seen in years, these unit should appear on the market throughout 24, one could assume oer decline thru year end just on supply alone?

      • January 16, 2024 at 8:29 am

        It’s just not enough. Not even close. And one can’t forget the cost side of supply – costs for landlords are rising significantly with a shortage of supply in many areas (and the shortage growing because population is growing faster than it ever has in our country). That’s just not an environment in which rents decline. They’re going to decelerate a little through the middle of this year from the overheated levels. But they’re not likely to decline.

        I may be wrong.

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