Follow these steps to update the value of your manual accounts. You can’t do this in the app.
From Mint.com:
- Sign in to Mint.com and select Settings from the black bar at the top of the page.
- Find your manual account and select the arrow next to its name.
- Edit the name or value.
- Select SAVE.
Related Information:
How do I add a manual account in Mint?
How do I add a new account in Mint?
How do I update my account info?