The dynamic environment-based object-oriented tax transition modeling algorithm method according to the present invention comprises: an input step of inputting information on a target object of tax modeling; a reply step of receiving from an external server object index information including demand-price elasticity information (Ed), supply-price elasticity information (Es), sales amount information (Q), and price information (P) corresponding to the target object; a demand information calculation step of calculating demand change amount data corresponding to a price change amount data; a supply information calculation step of calculating supply change amount data corresponding to the price change amount data; a calculating step of calculating a consumer purchase price and a supplier supply price corresponding to each tax variable value using a consumer attribution tax value (Tc), a supplier attribution tax value (Tc), and the price information (P) of the target object; a main calculation step of calculating supply amount information (D) closest to the consumer purchase price and supply amount information (S) closest to the supplier supply price; and a tax income calculation step of calculating tax income data for each tax variable value.;COPYRIGHT KIPO 2019
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