Hi Derick, The Summary settings page allows you to select the relevant fields from the form for options such as Amount, Discount, Tax, Delivery Fee, Tip, Donation, Net amount option. The mapping in the Summary settings allows Neartail to identify the field with the amount to be charged and pass this amount to the selected payment option. This mapping is also used to show the order summary. If you have mapped a field for the Net amount option, the answer for that field will be passed to the selected payment option. Otherwise, the answer for the field mapped for the Amount option will be passed. Update settings Login to Neartail > click on the to open it > Edit page will be displayed > In the Neartail Edit page, click on the form title to select it > click on the gear icon next to the form title > Form settings page will be displayed > click on the configure key fields icon next to the Save button in the bottom right corner > Summary settings page will be displayed > select the correct fields (see below) for the Amount, Tax, Delivery Fee, Net amount option and click Save. Amount - Select the Order Subtotal field Tax - Select the Sales Tax (15%) field Delivery Fee - Select the Delivery Charge field Net Amount - Select the Total amount to be paid field Please try this and let me know if you have any questions.