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Income earned through production within an economy, estimated from income-side data.
Statistical agencies use different data sources to estimate spending and income. Those sources arrive at different times and contain measurement errors, so published GDP and GDI can differ even though they are conceptually equal. That difference is called the statistical discrepancy. It should not automatically be interpreted as hidden production or deliberate misreporting.
Suppose a firm produces and sells J$1 million of final services. In a simplified account, it pays J$700,000 in employee compensation and generates J$300,000 in the remaining production-related income and costs. The expenditure and income totals both describe J$1 million of activity. An income survey missing part of the firm’s records could initially estimate a lower total without changing what was produced.