How long does it take for a return to process?

The return timeframe is dependant on a few factors, listed below.

For ACH transfers processed through the API - refunds will be processed 1-2 business days following the date that the funds are cleared from ACH chargeback risk. The window of time is 60 days from the date that the funds are posted to the escrow account.
For everything else, it is 1-2 business days following the completion of the DocuSign that will be sent to the investor to collect banking information.