If you receive partial payments from customers you can use WholeCell's customer/vendor credit balance to track payments and apply them towards outstanding invoices.

Let's say a customer has a $5,000 outstanding invoice and they just made a $2,000 payment. Find their profile at www.wholecell.io/organizations. Click on their name to open their profile:

Click on the balance to add a ledger entry:

Once saved, your customer will have a credit balance of $2,000:

Now, go to the invoice and apply the credits:

Once applied, the invoice shows a correct remaining balance of $3,000: