On the SoFi mobile app, total buying power is displayed directly beneath the accounts on the main Invest overview screen. You can view the buying power details by tapping on and expanding it.
Buying power is also displayed in the account itself directly below the performance. While placing a buy trade, your buying power will be displayed on the screen. On SoFi.com, buying power is displayed below the performance section of your Active Invest account. Buying power is also displayed near the top of the order entry page.