Show actual trade tax credit on the worksheet

The worksheet in Desk has the option of showing the tax credit on the trade-in vehicle.

However, this shows the maximum trade credit, not the actual trade credit. If I have a trade value that offers more tax credit than the customer actually pays in tax on their vehicle purchase, the worksheet still shows that higher value.

I would like the tax credit listed to reflect the actual trade credit applied to the deal. This may not always be possible, since worksheets showing multiple lease terms will have different tax credits applied. In that case, displaying the tax credit as "Available tax credit" or "Up to $3,800.00" is acceptable.