Question 1

What is inflation?

Accepted Answer

Inflation is the rate at which your dollar buys less stuff. The Bureau of Labor Statistics tracks a fixed basket of the things you actually buy, groceries, rent, gasoline, doctor visits, haircuts, and checks the price tag every month. If the basket cost $100 a year ago and it costs $103 today, inflation is 3%. The dollar is not a unit of anything fixed. It is a claim check on whatever goods the economy produces, and the number of goods one dollar claims shrinks almost every year. The question is never whether inflation is happening. It is happening. The question is at what speed, and whether your wages and your investments are running faster.

Question 2

What causes inflation?

Accepted Answer

Two things, usually at the same time. Demand-pull is when there is more money chasing the same amount of stuff, which is what you get when the government sends everyone a check or the Fed keeps rates near zero for a decade. Cost-push is when the stuff itself gets more expensive to produce, which is what you get when oil triples or a pandemic breaks the shipping lanes. The 2021 to 2022 inflation burst was both. Stimulus piled onto a supply chain that was missing chips, containers, and workers. Prices did what prices do when demand exceeds supply. Inflation is a price signal; it tells you the economy is trying to buy more than it can currently make.

Question 3

What is the difference between CPI and PCE?

Accepted Answer

Two different government agencies measure the same basic thing and get slightly different answers. CPI comes from BLS and tracks what urban households spend out of pocket. PCE comes from the Bureau of Economic Analysis and tracks everything purchased on your behalf too, including the health care your employer's insurance pays for. CPI usually runs a few tenths higher because its basket updates less often, so it doesn't fully capture the fact that when steak gets expensive, you buy more chicken. The Fed targets 2% PCE, not CPI, and the gap between the two is often the difference between a headline that says the Fed is behind and a headline that says it is on track. Same economy, two scoreboards.

Question 4

What is hyperinflation?

Accepted Answer

Hyperinflation is what happens when a government loses the ability to fund itself any way other than printing money and the currency stops being useful. The technical cutoff economists use is 50% a month, which compounds to roughly 13,000% a year. Weimar Germany in 1923, Zimbabwe in 2008, Venezuela since 2016. At that tempo you get paid in the morning and spend it by lunch because by dinner the bread costs twice as much. The U.S. has never seen hyperinflation; the worst peacetime year on record was 1979 at 13.3%, which was painful but not in the same universe. Hyperinflation is a political failure wearing an economic costume. It requires a central bank that cannot say no.

Question 5

How does the Fed control inflation?

Accepted Answer

The Fed sets the overnight rate that banks charge each other. That rate ripples through everything else: your mortgage, your car loan, the rate a business pays to borrow, the yield on your savings account. When the Fed raises rates, borrowing gets more expensive, demand cools off, and prices stop rising as fast. When it cuts, the opposite. The mechanism is blunt and it works with a lag, usually nine to eighteen months, which is why the Fed is often still hiking after inflation has already peaked and still cutting after it has already bottomed. The 2022 to 2024 tightening cycle is the cleanest modern example: 525 basis points of hikes brought CPI from 9% back to around 3% without breaking the labor market, which is what economists spent two years insisting was impossible.

Inflation, translated.

U.S. inflation, 1950 to today

Inflation, answered.

Inflation, translated.

U.S. inflation, 1950 to today

Inflation, answered.

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