GDP
GDP measures the value of final goods and services produced within an economy, using production, income, or expenditure data.
GDP measures covering current-price value, inflation-adjusted production, potential output, and the gap between actual and sustainable activity.
GDP levels and output gaps separate four questions: what domestic production is worth, how its volume changed, what output may be sustainable, and whether current activity is above or below that estimated capacity. Keeping the price basis and measurement status clear prevents nominal values, real quantities, and model-based potential output from being mixed.
| Measure | Use it for |
|---|---|
| GDP | Production, income, and expenditure views of domestic final output |
| Nominal GDP | Current-price value and comparison with nominal debt, revenue, income, or tax receipts |
| Real GDP | Inflation-adjusted production volume and growth across periods |
| Output Gap and Potential GDP | Model-based comparison of actual real GDP with estimated sustainable output |
These measures can inform revenue scenarios, sovereign credit, fiscal ratios, interest-rate expectations, and business-cycle analysis. They do not mechanically predict company earnings, policy decisions, recessions, or investment returns.
Do not confuse macroeconomic actual GDP with Actual Output measured as units or services completed by a company operation. GDP material is educational and does not provide investment, tax, lending, or policy advice.
Choose a subsection first. Deeper term pages live inside each subsection, which keeps large topic hubs readable.
GDP measures the value of final goods and services produced within an economy, using production, income, or expenditure data.
Nominal GDP measures final domestic production at current-period prices, so changes reflect both output quantities and prices.
The output gap compares actual real GDP with estimated potential GDP to indicate economic slack or demand above sustainable capacity.
Real GDP measures changes in domestic production volume after removing price effects through a statistical quantity-index method.