Please see https://ttlc.intuit.com/questions/2580013-can-i-pay-my-irs-taxes-with-a-credit-or-debit-card on how to pay the taxes using a debit/credit card. If you don't want to e-file, please see https://ttlc.intuit.com/questions/2580012-can-i-use-a-credit-or-debit-card-to-pay-the-irs-even-thoug.... From the IRS site: https://www.irs.gov/payments/pay-taxes-by-credit-or-debit-card
