When a calculated field is used in an online form (and the fields it calculates are custom currency fields) it shows as blank in the HTML form after submission, even if the applicant has clicked on the calculator icon when filling out the online form.
This has been confirmed as 'by design' by Blackbaud but this isn't very helpful when the HTML form itself is used for checking/review purposes during/after consideration as an empty field suggests the calculation is not working.