The substantiation of the mechanism of payment of temporary basic income for unemployed Russian citizens registered with the state employment service is proposed. The introduction of this mechanism is considered as a possible experiment for testing transitional forms of universal basic income in the Russian Federation. The modeling was carried out using the R1-4 simulation expert model of GDP reproduction of the Russian economy, which is adapted to assess the effect and costs of the proposed hypothetical “Conditional Basic Income (CBI) Program”. The functioning of the CBI Program after one-time start-up costs for its launch is ensured in the future by the annual multiplicative increase in the consolidated budget income of the Russian Federation.