Most things in Reckon One have an eye on the future. As Reckon One develops it will cater for more complex and detailed transactions and the Reports functionality will expand with it.
We do have an Ideas section which our developers monitor and shapes future releases. Please add this requirement in the Ideas portal to bring it to our developers attention - in your book click the ?icon and then the link: Submit a product suggestion
For the time being its through the Account the transactions is assigned to that is the basis for reporting.