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Economics

Types and Causes of Inflation

Demand-Pull, Cost-Push, and the Wage-Price Spiral Explained — A TLDR Primer

Inflation is on every economics exam — and in every news headline — but most textbooks bury the concept in jargon and lengthy chapters. If you have a test coming up, a confusing homework assignment, or a parent trying to help your student actually understand why prices rise, this guide gets you there fast.

**TLDR: Types and Causes of Inflation** covers everything a high school or early-college student needs: what inflation actually is (and what it isn't), how the Consumer Price Index is built and calculated, and a clear breakdown of the three forces that drive prices up. You'll learn how demand-pull inflation works when too much spending chases too few goods, why cost-push inflation hits even when consumers aren't spending more, and how the wage-price spiral keeps inflation going once it starts. Real historical cases — the 1970s OPEC oil shocks, the post-2020 stimulus surge, the 2021–2022 supply chain crunch — show each mechanism in action, not just in theory.

This is a demand-pull, cost-push, and built-in inflation study guide written for readers who are smart but new to the topic. No filler, no padding — just the concepts, the math, and the context you need. Short by design, you can read it in one sitting before class or an exam.

Pick it up, read it once, and walk in ready.

What you'll learn
  • Define inflation and distinguish it from related concepts like deflation, disinflation, and relative price changes
  • Explain how the CPI is constructed and how to calculate an inflation rate
  • Identify the causes and real-world examples of demand-pull, cost-push, and built-in inflation
  • Connect inflation to monetary policy, supply shocks, and the wage-price spiral
  • Recognize who wins and loses during inflationary periods and why central banks target low, stable inflation
What's inside
  1. 1. What Inflation Actually Is (and Isn't)
    Defines inflation as a sustained rise in the general price level, distinguishes it from one-off price hikes, and clears up common confusions with deflation and disinflation.
  2. 2. Measuring Inflation: CPI, Core Inflation, and the Math
    Walks through how the Consumer Price Index is built, how to compute a year-over-year inflation rate, and why economists also track core inflation and the GDP deflator.
  3. 3. Demand-Pull Inflation: Too Much Money Chasing Too Few Goods
    Explains how excess aggregate demand drives prices up, with examples from post-WWII America, the 1960s Vietnam-era boom, and the post-2020 stimulus period.
  4. 4. Cost-Push Inflation: When Supply Gets Expensive
    Covers how rising input costs — oil shocks, supply chain disruptions, wage spikes — push prices up even when demand is flat, using the 1970s OPEC crises and 2021–2022 supply chain shocks as cases.
  5. 5. Built-In Inflation and the Wage-Price Spiral
    Shows how inflation expectations get baked into wage demands and contracts, creating a self-reinforcing cycle, and explains why central banks care so much about 'anchoring' expectations.
  6. 6. Why It Matters: Winners, Losers, and the Fed's Job
    Pulls the threads together by examining who benefits and who suffers from inflation, why 2% is the typical target, and how monetary policy tools respond to each type of inflation.
Published by Solid State Press
Types and Causes of Inflation cover
TLDR STUDY GUIDES

Types and Causes of Inflation

Demand-Pull, Cost-Push, and the Wage-Price Spiral Explained — A TLDR Primer
Solid State Press

Types and Causes of Inflation

Demand-Pull, Cost-Push, and the Wage-Price Spiral Explained — A TLDR Primer

Copyright © 2026 Solid State Press.

Published by Solid State Press.

All rights reserved. No part of this book may be reproduced or transmitted in any form without prior written permission, except for brief quotations in critical reviews and educational use.

Part of the TLDR Study Guides series.

Contents

  1. 1 What Inflation Actually Is (and Isn't)
  2. 2 Measuring Inflation: CPI, Core Inflation, and the Math
  3. 3 Demand-Pull Inflation: Too Much Money Chasing Too Few Goods
  4. 4 Cost-Push Inflation: When Supply Gets Expensive
  5. 5 Built-In Inflation and the Wage-Price Spiral
  6. 6 Why It Matters: Winners, Losers, and the Fed's Job
Chapter 1

What Inflation Actually Is (and Isn't)

Every time you notice that a gallon of milk costs more than it did last year, you are brushing up against one of the most consequential concepts in economics. But the price of milk going up is not, by itself, inflation. Understanding the difference is where this subject starts.

Inflation is a sustained rise in the general price level — the average level of prices across the whole economy. Both words in that definition carry weight. Sustained means the increase persists over time, not just for a week or a season. General means it is happening broadly, across many goods and services, not just in one corner of the economy.

Think of the general price level as a kind of economic altitude reading. When inflation is happening, the whole floor is rising. When only milk gets more expensive while everything else stays flat, the floor has not moved — only one object on it has shifted.

One price going up is not inflation

This distinction trips up a lot of students. If a drought wipes out half the lettuce crop and salad greens get expensive, that is a relative price change — the price of lettuce has risen relative to other goods. It is not inflation. The same logic applies to gasoline when a refinery goes offline, or concert tickets when a popular artist announces a tour. These are supply-and-demand stories for specific markets.

Inflation is what happens when most prices are rising together, which means something more systematic is going on. That systematic force is usually money: too much of it chasing too few goods, or rising costs spreading across the supply chain, or expectations feeding on themselves. Those mechanisms are the subject of sections 3, 4, and 5.

Purchasing power: the flip side of the coin

Every rise in the price level is simultaneously a fall in purchasing power — the amount of real goods and services a dollar (or any unit of currency) can buy. If prices rise 10 percent, your $100 buys what $90.91 used to. The dollar did not disappear; it just became less capable.

About This Book

If you are a high school student looking for an AP Economics inflation review book before exam season, a college freshman in an intro macro course, or anyone who has searched "what causes inflation simple explanation" and gotten a 3,000-word wall of jargon in return, this guide was written for you. It also works as high school economics inflation worksheet help — something to read the night before a quiz or alongside a problem set.

The book covers the three main types of inflation explained for students: demand-pull, cost-push, and built-in. Along the way it doubles as a CPI and inflation rate beginner guide, walking through how economists actually calculate price changes and what "core inflation" means. It also breaks down the wage-price spiral explained for beginners, and serves as a self-contained demand-pull cost-push inflation study guide — all in about 15 focused pages.

Read it straight through. Work every example as you go, then test yourself with the problem set at the end.

Keep reading

You've read the first half of Chapter 1. The complete book covers 6 chapters in roughly fifteen pages — readable in one sitting.

Coming soon to Amazon