External Debt in Luxembourg decreased to 3524580.92 EUR Million in the fourth quarter of 2025 from 3529128.09 EUR Million in the third quarter of 2025. External Debt in Luxembourg averaged 2646330.41 EUR Million from 2002 until 2025, reaching an all time high of 4068783.11 EUR Million in the first quarter of 2017 and a record low of 678052.57 EUR Million in the fourth quarter of 2002. source: Banque Centrale Du Luxembourg