In the complete aggregate expenditures model, equilibrium GDP occurs where Ca + Ig + Xn + G = GDP. At the equilibrium GDP, leakages of after-tax saving (Sa), imports (M), and taxes (T) equal injections of investment (Ig), exports (X), and government purchases (G): Sa + M + T = Ig + Xn + G. Also, there are no BLANKED changes in inventories.