This article consists of financial network of inside municipality market as well as research results. Financial flow network between municipality facilities presents itself a complex of closed chains of exchange between them. This investigation reviews possible exchange chains, especially closed ones. Every chain has a financial flow and money turnover. Based on matrix calculation method there are balanced and not balanced financial flows, also coefficient of cooperation is calculated. By modeling economic connections between various facilities, we use appropriate indexes. In conclusion, a lot of subjects are handled at the same time between several exchange connections. Also investigation has a calculation of possible consequences between this connections for a municipality economics, which needed to be considered on practice, e.g. at developing of programms of municipality economics growth.