How Retainage is Calculated on Invoices
Retainage is usually based on the entire invoice, but it may also be based on specific invoice sections.
For example, you may bill the reimbursable and consultant expenses in full when the invoice is issued, but apply a 10% retainage to the remaining invoice sections until you complete the project satisfactorily.
On the Misc tab of the Billing Terms form, you can enter a retainage percentage for each section of the invoice: labor, consultants, expenses, fees, units, or add-ons.
Retainage Not Printing on Invoices
Check your Billing Group settings if, on a previewed or printed invoice, the total invoice amount reflects the withheld retainage, but the amount of retainage does not print in the detail portion of the invoice (detail does not add up to the total).
If you are printing the invoice using Billing Groups, and you have selected the Consolidate printing option, and you have selected Project from the Print retainage by field, retainage will not display on the invoice.
To fix this, change the Print retainage by option to Group.