Mitteametlikus majanduses loodud väärtused ei peegeldu ametlikus majandusstatistikas (nt SKPs). Mitteametlik majandus jaotatakse kaheks: legaalseks, nagu oma maja värvimine või jalgratta parandamine, ning illegaalseks, nagu prostitutsioon ja uimastikaubandus.
The informal economy forms part of the market economy in that it produces (legal) goods and services for sale or other form of remuneration. It covers informal employment both in informal enterprises (small unregistered or unincorporated enterprises), and outside informal enterprises. Informal entrepreneurs and workers share one important characteristic: they are not recognized or protected under existing legal and regulatory frameworks. The informal economy excludes the criminal economy and the reproductive or care economy.