This indicator describes the ratio between income and expenditures of the US. When income exceeds expenditures a surplus occurs. When expenditures exceed income a negative balance (deficit) occurs.
It has little impact on the market. Usually it is used for long-term economic analysis. Budget deficit is considered in the context of other indicators: Producer Price Index (PPI), Consumer Price Index (CPI), Money Supply (M1, M2, M3), etc.