What are you trying to do--pay estimated quarterly tax? No reason or need to do that "through TurboTax." You can pay directly on the IRS site or you can mail in the 1040ES vouchers with a check or money order.
https://www.irs.gov/payments/direct-pay
https://ttlc.intuit.com/community/tax-payments/help/how-can-i-pay-my-federal-taxes/00/26212
https://ttlc.intuit.com/community/tax-payments/help/how-do-i-pay-my-irs-tax-due-with-a-check-or-mone...
https://ttlc.intuit.com/questions/1901110-do-i-need-to-make-estimated-tax-payments-to-the-irs
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