New Study Looked at Five Key Intelligence and Human Development Factors: Smarts Translate into the Strongest Payoff

A July 2026 report on financial rewards for high cognitive abilities around the world found that in Singapore, intelligence pays off the most. A new study by iGaming software provider Digitain analyzed average IQ, median earnings, inequality levels, and development indicators across 49 countries to see where smarts translate into the strongest payoff.

• Singapore pays the most for intelligence, with a typical resident earning nearly $280 for each point of national average IQ.

• The highest IQ Wealth Efficiency is in Luxembourg at 1,607, meaning each IQ point generates more than $1,600 in national output.

• All five top performers are among the world's ten most educated countries, linking strong schooling to better financial returns.

The study looked at five key intelligence and human development factors. Average IQ provided the baseline for comparison, while median income measured what ordinary people actually earn, rather than GDP per capita, which can be inflated by high earners. The Gini coefficient adjusted for inequality, since a country with high income but high inequality does not distribute wealth evenly. Human Development and Education Indexes provided additional context. The final ranking was based on equality‑adjusted income per IQ point, calculated as median income multiplied by one minus the Gini coefficient, divided by average IQ.

Here are the 10 countries where intelligence pays the most:

Country	Average IQ (IIT)	Human Development Index	GDP per Capita	Median Income	Gini Coefficient	IQ Wealth Efficiency	IQ Income Efficiency	Equality-Adjusted Income per IQ Point
Singapore	103.6	0.95	$107,7K	$53,3K	45.80	1,041	515	279
New Zealand	102.4	0.94	$52K	$40,8K	32.00	508	399	271
Luxembourg	98.8	0.92	$158,7K	$26,3K	33.60	1,607	267	177
Switzerland	100.8	0.97	$126,1K	$21,4K	33.80	1,251	213	141
Canada	102.1	0.94	$60,3K	$18,6K	29.90	591	183	128
Netherlands	100.3	0.96	$79,9K	$17K	25.70	797	171	127
Austria	99.8	0.93	$67,7K	$18,4K	31.20	679	184	127
Finland	100.0	0.95	$60,1K	$16,3K	27.40	601	163	119
Belgium	99.7	0.95	$65,1K	$16,1K	26.80	653	162	119
Germany	99.3	0.96	$65,3K	$16,8K	32.40	658	170	115

You can access the complete research findings here.

1. Singapore

• Average IQ (IIT): 103.6

• Human Development Index: 0.95

• GDP per Capita: $107,7K

• Median Income: $53,3K

• Gini Coefficient: 45.80

• IQ Wealth Efficiency: 1,041

• IQ Income Efficiency: 515

• Equality-Adjusted Income per IQ Point: 279

Singapore is where cognitive ability delivers the highest financial return. An average resident earns about $280 per IQ point after adjusting for inequality, the best ratio in the study. The nation's average IQ sits at 103.6, and median income reaches $53K per year, among the highest globally. Income inequality is relatively high at 45.8, but Singapore combines high intelligence with high wages, creating an environment where smarts are well rewarded.

2. New Zealand

New Zealand takes second place with an adjusted income per IQ point of 271, just eight points behind Singapore. Median income stands at $40K, and the typical IQ is 102.4. Income inequality is much lower than Singapore at 32, meaning a larger share of the country's wealth reaches ordinary people. New Zealand's strong education system and high human development score help turn cognitive ability into widespread financial gains.

3. Luxembourg

Luxembourg ranks third with an adjusted earnings per IQ point of 177. Average IQ is 98.8 here, the lowest among the top five, and the typical take-home pay sits at $26K with moderate inequality at 33.6. Luxembourg has the highest GDP per capita in the top ten at $158K and the highest IQ Wealth Efficiency at 1,607, meaning a one‑point increase in average IQ corresponds to $1,600 in national wealth.

4. Switzerland

Switzerland places fourth with an adjusted return of 141 per IQ point. The national IQ sits at 100.8, and the typical worker brings home $21K annually. The country claims the second highest economic output per person among the top five at $126K and a strong IQ Wealth Efficiency of 1,251. This means each IQ point corresponds to more than $1,250 in national prosperity. Switzerland's position in the top five reflects a highly productive economy that consistently turns cognitive ability into tangible financial rewards.

5. Canada

Canada finishes fifth with an adjusted figure of 128 for each IQ point. Average intelligence stands at 102.1, and the typical person earns $18K per year. Wealth distribution is the most equal in the group at 29.9, so a larger slice of the pie reaches average residents. Strong schools and solid social foundations help turn mental ability into broad economic progress.

Ani Mkrtchyan, Chief Sales Officer at Digitain, commented on the study:

"Intelligence-based jobs are expanding all across the world, and every country needs a steady supply of these specialists. The price varies wildly depending on where you work. In some markets, a point of IQ buys a comfortable life. In others, the same point barely covers the basics. The best economies know how to package and price that commodity. They build schools that refine it, industries that value it, and wage systems that pay for it, which helps to build better conditions and comfortable living standards.”