Deficit

A deficit is the amount by which a sum falls short of some reference amount.

Economics

 * Balance of payments deficit, when the balance of payments is negative
 * Government budget deficit
 * Deficit spending, the amount by which spending exceeds revenue
 * Primary deficit, the pure deficit derived after deducting the interest payments
 * Structural and cyclical deficit, parts of the public sector deficit
 * Income deficit, the difference between family income and the poverty threshold
 * Trade deficit, when the value of imports exceed the value of exports fiscal deficit of that year= total borrowing by government
 * Equity (finance) with a negative balance

Psychology

 * Attention deficit hyperactivity disorder, a developmental disorder
 * Cognitive deficit, any characteristic that acts as a barrier to cognitive performance

Other

 * Defect (geometry), angular deficit
 * Déficit, a 2007 Mexican film by Gael García Bernal