Sorry but it is too late to file an extension ... last date for that was 4/18. So all you can do now is file the return and make the payment in some fashion. If you cannot make the entire payment when you file then choose the "mail in a check" option in the FILE tab then you can mail in a partial payment with the 1040-V that prints out and/or get on a payment plan. https://www.irs.gov/payments/payment-plans-installment-agreements
