Field note 05 / 24·4 min
What inflation does to your basket
A price level and the speed at which it changes are different things.
Follow a basket, not one price
Inflation describes a broad rise in prices across goods and services. Statistical agencies combine many items into a weighted basket. Items on which households spend more carry more weight, so a large rise in one small purchase need not dominate the overall measure.
Your household can feel a different rate
Your spending mix may differ from the average. Someone who spends a larger share on rent or transport can experience a different change in costs. Compare like quantities and quality over the same period before calling a larger bill a price increase.
Lower inflation usually means prices are rising more slowly, not returning to their previous level. A negative inflation rate would mean the measured price level fell over that period. The Money Lab uses a constant illustrative rate to isolate this effect; actual rates change, and no slider predicts your future shopping bill.
Slower rises still add up
A fixed basket costs 100. After 5% inflation it costs 105. If inflation then slows to 2%, it costs 107.10 the following year: 105 × 1.02. The second year’s smaller rate does not erase the first year’s rise.
Illustrative numbers, in consistent units.One thing to try
Pick three regular purchases and record their quantities and prices. Compare the same basket next month.
Inflation falls from 5% to 2%. Which statement follows?
Source notes
These references support the general principles. Product terms and legal protections vary by country.
- What is inflation?European Central Bank · Checked 2026-11-03
For general education. Examples do not include every fee, tax, personal circumstance or local rule, and are not individual advice.