Yes, you can!  When you link accounts using the Premium plan, all of the transactions you make in real life will get automatically imported into your budget.  And while it’s not required to manually record

With Goodbudget Premium, you’re able to connect Goodbudget with your financial institutions so that your transactions are automatically imported.  While Goodbudget Premium is available to everyone, you’ll need to link your Accounts on the web

Goodbudget Premium allows you to link your Goodbudget Accounts to your real-life ones. When you do that, transactions you make are automatically imported into Goodbudget, making tracking your budget a little simpler. If you’re curious