The World's Poverty Line Moved to $3.00 a Day. Nobody Got Poorer.

by Marcus Lindqvist · August 31, 2026

Global Economy Reporter, The Globe Ledger

A poverty line is a price, and prices have to be set by somebody. On 5 June 2025 the World Bank announced that its international poverty line — the threshold behind almost every headline about global extreme poverty — had moved from $2.15 a day to $3.00 a day. According to the Bank's factsheet accompanying that update, the number of people counted as living in extreme poverty in 2022 rose from a previous estimate of about 713 million to roughly 838 million. Around 125 million people crossed a line without moving.

That is the single most important thing to understand about the figure. Nobody's consumption fell. The instrument changed. And because the same instrument is used to measure the past, the entire historical series moved with it: the Bank now estimates that about 1.5 billion people escaped extreme poverty between 1990 and 2022, up from a previous estimate of 1.3 billion. The revision made measured progress look faster, not slower: in the Bank's June 2025 factsheet the 1990 extreme-poverty rate is revised upwards by six percentage points, while the 2022 rate is revised upwards by only 1.5 points.

In its June 2025 factsheet the Bank breaks the $0.85 increase into two parts. Roughly $0.35 came from switching the currency-conversion base from 2017 to 2021 prices. The remaining $0.50 or so came from something more substantive: the poorest countries themselves revised what they consider a poverty line, and those revisions fed straight through into the global number.

Where the number actually comes from

The international poverty line is not chosen as a moral target. It is a median. For the 2021 update, the Bank compiled and harmonised 1,747 national poverty lines drawn from 163 countries, up from 1,381 lines across 157 countries in the previous, 2017-based version. One line is selected per country — the one closest in time to the reference year of the global price survey. The median is then taken not across all 163 of those countries but across a much smaller group: the 23 economies classified as low-income at the time of their latest national line. In the Bank's own words on its data blog, "The median poverty line of low-income countries is the international poverty line."

So $3.00 a day is best read as a sentence rather than a threshold: it is the middle value of what the world's low-income governments, working from their own cost-of-basic-needs calculations, say a person needs in order not to be poor. The Bank's position is that the approach behind the line did not change in 2025; what changed was the price base and the underlying national lines, which are both better measured and closer in time to the price survey — the median low-income-country line now sits one year behind the 2021 price-survey reference year, against three years behind the 2017 one.

Two higher lines are built the same way from different country groups. The line for lower-middle-income countries moved from $3.65 to $4.20, a rise of about 15 per cent, and the line for upper-middle-income countries from $6.85 to $8.30, about 21 per cent. Those thresholds matter more than they look: most of the world's population lives in countries where the relevant comparison is one of the higher lines, not the extreme-poverty line.

The conversion nobody sees

None of this works without purchasing power parities, and PPPs are produced by a statistical operation most readers have never heard of. The International Comparison Program, hosted by the World Bank, published its 2021 round on 30 May 2024, drawing on price data collected in 176 economies. PPPs are currency conversion factors rather than market prices: they express what a comparable basket of goods and services costs in one economy relative to a reference economy — the United States, for the dollar figures used in poverty measurement — so that a dollar amount stands for roughly the same purchasing power wherever it is applied.

Market exchange rates cannot do this job, because they are set largely by traded goods and capital flows while poor households spend heavily on things that are not traded across borders. The ICP round is also what gives the world its alternative map of economic size: on the ICP's 2021 estimates, the global economy measured in PPP terms came to $152 trillion for that reference year, with middle-income economies accounting for more than half of the total and low-income economies for barely one per cent of global GDP.

The practical consequence is that the poverty line is hostage to the price survey. Every time the ICP publishes a new round, the line is re-expressed in the new base year, and the count moves. That is a feature of any inflation-adjusted threshold, but it is rarely acknowledged in the coverage that treats the resulting number as a direct observation of human hardship.

What moved underneath

The 2025 revision was not evenly distributed, and the reasons are technical. India's 2022-23 consumption survey used a Modified Mixed Reference Period rather than the Uniform Reference Period of earlier rounds — a change in how households are asked to recall what they consumed. That breaks strict comparability with the earlier rounds; the Bank publishes an adjusted series and flags the break rather than presenting the fall as a like-for-like comparison. South Asia ended up with about 45 million fewer people counted as extremely poor. Sub-Saharan Africa, by contrast, absorbed the largest upward revision, an additional 111 million. At the higher lines the swings were larger still: a downward revision of about 180 million at the lower-middle-income line for 2022, and an upward revision of about 258 million at the upper-middle-income line.

As of the Bank's most recent global poverty update, published on 26 March 2026, an estimated 847 million people — 10.4 per cent of the world's population — were living below the $3.00 line in 2024. That update incorporated new survey data for 28 country-years. The Bank projects the rate falling to about 10.0 per cent by 2026, but that figure is a projection rather than a measurement: it is built on the national-accounts forecasts published in the January 2026 edition of Global Economic Prospects.

The honest caveat is about coverage rather than arithmetic. Regional estimates run through 2024 for every region except Eastern and Southern Africa, where the data stops at 2023. The Bank's coverage test is that surveys collected within three years of the reporting year must account for more than half of a region's population. On that test, its June 2025 factsheet reports coverage reaching 2023 everywhere except sub-Saharan Africa, and thinnest of all in West Africa, where no recent Nigerian survey is available. The region with the most poor people has the least frequent surveys — which means the global headcount is least reliable exactly where it matters most.

The Bank itself offers the most useful piece of advice about how to use its number, and it is routinely ignored. Its guidance is that for policy dialogue inside a country, or for targeting programmes at the poorest people within it, a national poverty line remains far more appropriate than the international one. The international lines exist to make countries comparable to one another for global monitoring — they are a common yardstick, not a verdict on any particular society.

Read that way, the $3.00 line becomes less mysterious and more useful. It is a household consumption threshold, assembled from national judgements, converted through a global price survey, applied retrospectively to decades of data, and updated on a cycle set by statisticians rather than by events. It will move again when the next ICP round lands. When it does, tens of millions of people will once more cross a line without anything happening to them at all.