Brazil uses CBDC transaction data as a basis for adjusting interest rates.

The Central Bank of Brazil will use transaction data from the digital currency called Drex to support real-time interest rate decisions. Each transaction on Drex is recorded with a timestamp, helping to quickly measure fluctuations in consumer spending and liquidity. Personal data is secured and cannot be retrieved.

Drex also supports borrowers without a credit history by allowing the sharing of transparent cash flows. Currently, Drex is testing with 16 organizations, awaiting approval for widespread deployment. The policy decision still rests with the monetary council, and transactions are managed by the society.