Americans’ grasp of basic financial concepts fell to a 10-year low in 2026, a decline that has direct implications for any firm collecting debt or extending credit.
U.S. adults correctly answered just 47% of the 28 questions on the annual TIAA Institute-GFLEC Personal Finance Index, down from a 52% peak in 2020 and the lowest mark since the survey launched in 2017. The slide is driven by growth at the bottom: the share of adults answering seven or fewer questions correctly rose to 25% from 20% a decade ago.
For the credit and collection industry, the debt-specific findings matter most. Borrowing and managing debt remains the strongest knowledge area, but even it eroded, falling to 58% from 61% in 2017. The question testing compound interest, asking how long a 20% loan takes to double, tripped up most respondents: only 40% got it right, while 30% chose “don’t know.”
The well-being data sketches the consumer many agencies already recognize. Roughly 31% of adults are debt-constrained, meaning debt payments crowd out other priorities, and 32% are financially fragile, unable to cover a $2,000 emergency. Those with very low literacy are more than twice as likely to be debt-constrained and four times as likely to struggle making ends meet compared with high-literacy peers.
Younger consumers post the weakest scores. Gen Z answered only 38% of questions correctly, the lowest of any generation, and very-low-literacy adults are the single largest segment within that cohort. With Gen Z increasingly entering credit relationships, the gap is poised to follow them into delinquency and recovery for years.
The report’s first look at AI is a signal worth watching for omnichannel strategy. Nineteen percent of adults have used an AI tool such as ChatGPT, Gemini, or a bank chatbot for personal finance information, but adoption skews young: 29% of Gen Z versus 8% of boomers. Regular use to actually manage finances remains thin at 4%. The early read is that AI is becoming a go-to information source for the same younger, lower-literacy consumers collectors will increasingly engage.
There is also a workplace cost. Workers with very low financial literacy spend about 11 hours per week dealing with personal finance issues while on the job, a productivity drag relevant to employers across the industry.
The authors frame the fix as expanded financial education, from K-12 through workplace programs. For creditors and collectors, the more immediate takeaway is a borrower base that, on average, understands its obligations a little less well each year.
