This Week's Inflation Reports Could Decide the Fed — and Mortgage Rates

Our September 2026 forecast for CPI, core CPI, PPI and core PPI — and the most likely Federal Reserve decision next week.

The Rate Update with Dan Frio

CPI, PPI and both core readings arrive just before the Federal Reserve meets. Here is our forecast, the data behind it and the result we believe is most likely.

Forecast published September 9, 2026 • Data releases and market pricing can change
THE RATE UPDATE FORECAST

Our bottom line

Inflation will likely look hot at the headline level, but less threatening underneath. Our Fed call is a 55% probability of a hold and 45% probability of a 25-basis-point hike.

This is a close call, not a certainty. If core CPI prints 0.3%, we estimate the probability of a hike rises to roughly 70%. If core CPI prints 0.2%, we put the hike probability near 15%. One rounding decision could change the meeting.

The week’s decision calendar

EventDateTime ETWhy it matters
OPEC monthly reportThursday, Sept. 106:00 a.m.Energy outlook before PPI
August PPIThursday, Sept. 108:30 a.m.Wholesale and pipeline inflation
30-year Treasury reopeningThursday, Sept. 101:00 p.m.Direct test of long-bond demand
August CPIFriday, Sept. 118:30 a.m.Final major inflation report before the vote
Michigan sentimentFriday, Sept. 1110:00 a.m.Inflation expectations
FOMC decisionWednesday, Sept. 162:00 p.m.Hold or first hike in years

Fed officials are in their communications blackout. Friday’s CPI is the final major inflation reading before the committee votes.

Our inflation forecast

ReportJulyConsensusOur forecastSignal
PPI, month over month0.0%+0.4%+0.5%Hotter
PPI, year over year4.7%about 5.0%–5.2%Pipeline pressure
Core PPI, month over month
Excluding food and energy
+0.2%+0.3%+0.4%Above consensus
CPI, month over month+0.1%+0.4%+0.4%Energy-driven jump
CPI, year over year3.4%3.4%3.4%Still elevated
Core CPI, month over month+0.2%+0.2%+0.26%55% chance it rounds to 0.3%
Core CPI, year over year2.5%2.4%2.4%Gradual cooling

Core PPI conventions vary. This forecast refers to final demand excluding food and energy; the less-food-energy-and-trade-services measure should also remain firm. Forecasts are estimates, not released government data.

Why we expect a hot PPI report

July’s producer prices were flat because a 0.7% drop in final-demand goods offset rising services and construction. That relief is unlikely to repeat. Petroleum-linked input costs increased, tariff-sensitive materials remained expensive and the diesel crack spread reached a record level.

The Institute for Supply Management’s manufacturing Prices Index held at 71.1. Its services Prices Index rose to 72.6, the highest reading since August 2022. Fifteen services industries reported paying higher prices and none reported paying less. These are diffusion indexes—not direct PPI forecasts—but they show unusually broad price pressure.

A base effect also matters. August 2025 PPI declined 0.1% month over month. Replacing that negative month in the annual comparison with our +0.5% forecast would push annual wholesale inflation toward a 5-handle. We assign a 65% probability that annual PPI prints at or above 5.0%.

The overlooked story: Producer inflation was already 4.7% in July versus 3.4% consumer inflation. Businesses have absorbed costs that have not been fully passed through. If that gap persists, it creates pipeline risk for future consumer prices.

Our biggest risk: portfolio-management prices surged 6.5% in July. A reversal could pull the monthly PPI result closer to +0.3%.

Why CPI can be hot and core inflation can still cool

Headline CPI should rebound as August energy costs replace July’s relief, when the energy index fell 1.5% and gasoline fell 2.9%. That supports our +0.41% monthly headline forecast. The later rise in crude toward $97 is primarily a September and October CPI issue—not an August one.

Underneath the headline, shelter has been moderating, wage growth is not showing a new spiral and July core CPI was only +0.2%. The Cleveland Fed’s August nowcast is +0.36% headline and +0.20% core. We are slightly above its core estimate because service-sector price surveys and vehicle-related demand point to upside risk.

The annual comparison matters too: a relatively high August 2025 CPI reading drops out. That allows annual core CPI to fall from 2.5% to roughly 2.4% even if the monthly core number edges higher.

The labor market is sending two different messages

The BLS reported 162,000 August payroll gains and upward revisions to June and July. But ADP monthly payrolls were only 38,000, its latest weekly pace translates to roughly 48,000 per month, and ISM Services Employment remained in contraction at 47.8.

Wage data are more consistent: BLS average hourly earnings rose 3.1% annually and ADP base pay rose 3.2%. That does not look like a wage spiral. This contradiction—firm official payrolls but much softer private and survey measures—is a major reason we lean toward a hold rather than a reversal of policy direction.

Consumer demand is firmer than the headline suggests. July consumer credit rose $18.06 billion, but only $2.80 billion came from revolving credit cards. The majority came from non-revolving auto and student lending, including the largest monthly increase in three years. That looks more like big-ticket demand than distress borrowing and adds mild upside risk to vehicle prices.

What the Federal Reserve will most likely do

The current federal funds target is 3.50%–3.75%. Our base case is a hold with 55% probability, versus a 25-basis-point hike at 45%. That sits slightly below current market pricing for a hike.

If core CPI prints 0.3%

We estimate roughly a 70% probability of a hike. A hot PPI reading, firm growth and broad services inflation would strengthen that case.

If core CPI prints 0.2%

We estimate only a 15% probability of a hike. Cooling annual core inflation, stable expectations and mixed labor data would favor holding.

The hinge is core CPI—not the headline alone.

We lean hold because annual core inflation is likely to ease, wage growth is not spiraling, employment signals conflict and the consensus inflation forecast meets the condition policymakers have described for patience.

Why we may be wrong: the bond market is leaning the other way. The September 8 three-year Treasury auction cleared 18 basis points above the prior auction. Alongside strong GDP tracking, elevated oil and a 4.7% producer-price reading, that is meaningful evidence that investors remain concerned about inflation and Fed credibility.

The Fed does not set mortgage rates

The Fed controls a short-term overnight rate. Fixed mortgage rates respond more directly to the 10-year Treasury and mortgage-backed securities. The 10-year yield reflects expected future short-term rates, expected inflation and a term premium for locking money up for a decade.

That creates a result many borrowers find counterintuitive: a Fed cut or dovish hold can push mortgage rates higher if bond investors believe the Fed is easing before inflation is beaten. A credible hike can sometimes pull longer-term yields lower by convincing investors that inflation will be contained.

The clearest recent example came in late 2024. The Fed cut a total of 100 basis points, but the 10-year Treasury and the average 30-year fixed mortgage rose by roughly a full percentage point over the same broad window.

Fed outcomeLikely long-rate responsePossible mortgage response
Hike, framed as sufficientModest bond rally; yields downCould improve over the following 1–2 weeks
Hike, framed as first of severalTwo-year up; 10-year mixedFlat to slightly higher
Hold, hawkish languageModest yield increaseSlightly higher
Hold, dovish languageCredibility and term-premium riskPotentially higher

A dovish hold may be the worst outcome for a 30-year fixed mortgage if investors see it as insufficient against inflation. But a hike would immediately hurt borrowers with HELOCs, adjusting ARMs, construction loans and other short-rate products. Those borrowers and fixed-rate mortgage borrowers can have opposite interests.

The biggest mortgage-rate risk may be Thursday, not Friday: OPEC at 6:00 a.m., PPI at 8:30 a.m. and the 30-year Treasury reopening at 1:00 p.m. create three tests for inflation and long-bond demand in a single day.

What one percentage point does to a $350,000 mortgage

To isolate the rate impact, this comparison assumes a $350,000 loan amount, a 30-year fixed mortgage and principal-and-interest payments only. Taxes, insurance, mortgage insurance, HOA charges and closing costs are excluded.

RateMonthly P&IPayment increaseLoan supported by $2,096 paymentPurchasing-power loss
5.99%$2,096Baseline$350,000Baseline
6.99%$2,326+$230/month$315,390-$34,610
7.99%$2,566+$470/month$285,946-$64,054
The affordability takeaway: moving from 5.99% to 6.99% adds about $230 per month on the same $350,000 mortgage—or removes roughly $34,600 of borrowing power if the buyer keeps the payment at $2,096. At 7.99%, that same payment supports about $64,100 less mortgage debt.

Calculations are rounded to the nearest dollar and assume 360 equal monthly payments. Purchasing power refers to loan principal, not home price. With the same down-payment percentage, the change in maximum home price would be larger.

Our final scorecard

PredictionOur confidence
PPI year over year prints at or above 5.0%65%
PPI monthly meets or exceeds +0.4%60%
Core CPI rounds to 0.3%55%
Headline CPI lands within 0.1 point of +0.4%80%
Fed holds September 1655%
Fed hikes September 1645%

The cleanest way to describe this week is simple: headline inflation will tell us how painful the shock is; core inflation will tell us whether it is spreading. The second answer is the one most likely to decide next week’s Fed vote—and the direction of mortgage rates.

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Sources and methodology

Official data: BLS Consumer Price Index; BLS Producer Price Index; Federal Reserve FOMC calendar; Cleveland Fed inflation nowcasting; ISM Manufacturing; and ISM Services.

These are calibrated probability estimates, not a historical accuracy rate. This is the first published forecast in this series, and results should be compared with this table after release.

This material is for informational and educational purposes only. It is not financial, investment, tax, or legal advice, and it is not a recommendation to lock or float any mortgage rate. Economic forecasts are estimates and may prove inaccurate. Individual circumstances vary; consult a qualified professional regarding your specific situation. Mortgage products are originated by PBT Bancorp, NMLS #257781.

Dan Frio | NMLS #246527 | PBT Bancorp | NMLS #257781 | 524 Main St, Hazard, KY 41701

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