How the management discount is applied to the net payable

See where the management discount sits in the order of operations and how it prints on the Summary.

1. Management discount is a separate, renameable discount applied AFTER everything else.

2. Order of operations: item-type discounts reduce products and services; design fee (if enabled) is added; tax is added; then management discount subtracts.

3. The fee is fee% × (product cost + product tax) computed on PRE-discount values, so item discounts never shrink the design fee.

4. A percentage management discount is value% of the net price at that point (which includes the design fee), plus a proportional tax relief.

5. An absolute management discount subtracts exactly the entered amount with no tax adjustment.

6. The management discount prints as its own Summary row (only when greater than zero, with the percentage in brackets if the percentage-display preference is on) just above Total Payable.

7. The management discount is NOT part of the per-row Discount column or the bucket discount lines.

8. Validation only warns (never blocks) when the management discount pushes combined discounts past the admin total caps.

9. If 'Total Payable is lower than the sum of the lines', look for the management discount row first.