Payment At Deadlines Engineering, we use Paypal for our online transactions so that you can rest assured that your financial information will be kept secure. Even more importantly, you do not need to have a Paypal account to pay us. You can use Visa, Mastercard, American Express, or Discover! Just fill in the Invoice # or payment date and the amount of payment and click the pay now button! Please enter information below: Invoice # or Date: ( Enter as MM-DD-YY ) Amount: ( Enter as xxx.xx, with no $ sign) ( Click Pay Now After Date and Amount has been entered above) *When you click the Pay Now button, you will be taken to a secure payment site at Paypal where you will complete the payment transaction.