Enjoy the Inflation Headline. The Banks Will Enjoy the Rate Hike.

Apparently, we're supposed to feel better because inflation disappointed the people predicting how much worse it would be.

August's core PCE inflation came in below expectations, at 3% over the previous year. Include food and energy — the tiresome necessities that refuse to remove themselves from our budgets — and prices were up 3.4%.

Better than expected. Still more expensive.

Meanwhile, on September 16, the Federal Reserve voted unanimously to raise rates, lifting its benchmark range to 3.75%–4%.

So we're reading an August price report after the people controlling short-term borrowing costs have already decided those costs need to rise.

Forgive me for holding the fucking confetti.

August Doesn't Give October the All-Clear

The August report matters. It tells us where inflation and spending stood before September's decision. It can also influence what the Fed does next.

What it cannot do is tell us that households have comfortably absorbed a rate increase that hadn't happened yet.

The same problem applies to the GDP celebration. The economy grew at a 2.2% annualized rate in the second quarter, revised up from 1.5%. That covers April through June. Useful information about spring. A lousy reassurance about your next credit-card statement.

And "higher than expected" has a remarkably low admission requirement: somebody expected something worse. Your grocery budget doesn't get a refund because an economist overshot the forecast.

Higher interest rates are supposed to restrain spending and inflation. But households needing credit can face higher financing costs while policymakers wait for that restraint to work.

You get to help fight the affordability crisis by finding more money for interest. A magnificent assignment for people already short of money.

Your Cheap Mortgage Doesn't Protect Everything

The 10-year Treasury yield is a major benchmark, especially for pricing new fixed-rate mortgages. It isn't a master switch that sets every loan in America. Credit cards generally follow the prime rate, which tracks the Fed much more directly.

Those distinctions don't make the squeeze imaginary. On September 29, the 10-year yield stood at 5.26%, the 30-year at 5.59%, and the bank prime rate at 7%.

If you have a 2.9% fixed mortgage, that particular rate stays put. Good. Keep the protection you have. It doesn't make you immune to replacing a car, borrowing for a repair, or carrying a credit-card balance because the paycheck ran out before the month did.

And the banks aren't merely innocent messengers delivering the Fed's unpleasant news.

Between late 2013 and 2023, average rates on credit-card accounts charged interest rose from 12.9% to 22.8%. Nearly half that increase came from issuers widening their own margins above prime. The CFPB estimated that higher margins generated $25 billion in additional interest revenue for major card companies in 2023.

That history matters because September's hike travels through the same pricing arrangement: a benchmark rate, plus a margin the issuer sets. Variable card rates usually rise when the Fed raises its rate. The bank doesn't need to widen your margin again for your borrowing to become more expensive.

Public policy supplies the tightening. Private lenders collect interest on the resulting balances. The people trying to bridge a shortfall get the lecture about living within their means.

Spending More Does Not Equal Doing Better

Buried beneath the reassuring interpretation is an awkward August pairing: real spending rose 0.6%, while inflation-adjusted disposable income was flat.

People collectively bought more without a corresponding increase in purchasing power from current income. That doesn't establish why every household spent. It certainly doesn't establish that everyone was comfortable.

I stocked up on some essentials. Have you seen the cost of even bar soap recently?

I suspect some August spending was people getting ahead of costs they expected to worsen. Buying necessities early can be defensive, even when it looks wonderfully vigorous in an aggregate spending figure. My shopping isn't proof of a national trend, and the spring GDP report can't establish a late-summer buying rush. But treating every extra purchase as a vote of confidence is its own convenient fiction.

My expectation for autumn is more strain among households carrying variable-rate debt or needing fresh credit. Flat real disposable income leaves little additional room to absorb higher financing costs. Unless income gains or falling expenses create that room, something else in the budget has to give.

September and October's reports will help test that expectation. The full effects can take longer, and inflation could improve while household finances deteriorate. Watch real income, saving, and overdue payments alongside the price index.

August gave us useful numbers. It didn't give anyone permission to declare the squeeze over.

When buying soap ahead of time starts to feel like a financial strategy, people have earned something better than congratulations on the economy.