An extremely important definition of income is Haig–Simons income, which defines income as Consumption + Change in net worth and is widely used in economics.
aN eXTremely importanT defINition of incoMe is hAiG–Simons incOme, wHich dEFineS incomE As coNSumptiOn + chANgE In neT wortH ANd is wIdELy Used in econOmiCS.