Revenues from oil and gas constitute about 90% of total government income. From 1986 to 1990, the government ran a deficit due to the drop in oil revenues from fallen prices. These deficits often have resulted in the procrastination of payments by the government, which creates a financial difficulty for many private companies.
The US Central Intelligence Agency (CIA) estimates that in 2001/02 Qatar's central government took in revenues of approximately $5 billion and had expenditures of $4.8 billion including capital expenditures of $900 million. Overall, the government registered a surplus of approximately $200 million. External debt totaled $13.1 billion.