The quantum macroeconomics theory is formulated for the first time, assuming that the business cycle has the discrete-time oscillations spectrum in analogy with the electronics excitations discrete-time spectrum in the Bohr’s atom model in the quantum physics. The quantum macroeconomics theory postulates that the discrete-time transitions from one level of GIP((t), GDP(t), GNP(t) to another level of GIP((t), GDP(t), GNP(t) will occur in the nonlinear dynamic economic systems at the time, when: 1) The land, labour and capital resources are added/released to the production/service processes in the form of quanta; 2) The disruptive scientific/technological/financial/social/political innovation is introduced, creating the resonance conditions necessary to amplify/attenuate the value of GIP((t), GDP(t), GNP(t), during the evolution process of the nonlinear dynamic economic system in the time domain. The authors think that the general information product on the time GIP((t), the general domestic product on the time GDP(t), and the general national product on the time GNP(t), are the discrete-time digital signals (the Ledenyov discrete-time digital waves with the Markov information) in distinction from the continuous-time signals (the Kitchin, Juglar, Kuznets, Kondratieff continuous waves), because of the discrete-time nature of the disruptive scientific/technological/financial/social/political innovations. The authors apply the quantum macroeconomics theory to research and develop a new software program for the accurate characterization and forecasting of GIP((t), GDP(t), GNP(t) dependencies changes in the economies of scales and scopes in the time domain for the use by the central/commercial banks.