Kalmar "masanin tattalin arziki" ko "masanin tattalin arziki" na nufin mutumin da ke amfani da hanyoyin kididdiga da lissafi don tantance bayanan tattalin arziki da gwada ka'idojin tattalin arziki. Masana tattalin arziki yawanci suna aiki a cikin makarantun ilimi, hukumomin gwamnati, ko ƙungiyoyi masu zaman kansu, inda suke amfani da ƙwarewarsu don gudanar da bincike, yin hasashe, da sanar da yanke shawara game da manufofin tattalin arziki. Hakanan za su iya haɓakawa da tace samfuran ƙididdiga don bayyana al'amuran tattalin arziƙi da hasashen abubuwan da ke faruwa a nan gaba. Fannin tattalin arziƙi na tsaka-tsaki ne, wanda aka zana a kan tattalin arziki, kididdiga, lissafi, da kimiyyar kwamfuta.