Hello, I will be efiling tru turbotax desktop but i want to pay my current tax due thru IRS vendor to take advantage of lower fee. Where do i enter this payment in Turbo?

If you owe tax due, you have to pay it yourself by the filing deadline on April 15, 2024.

 If you have federal tax due you can pay by mailing your payment with the 1040V voucher, (which has the address printed on it, having the payment taken out of a designated bank account, or you can pay directly on the IRS website. 

https://www.irs.gov/payments

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-money-order/00/26403 

To apply for a payment plan with the IRS

Apply Online for a Payment Plan

You must pay your state tax due using the state’s preferred method of receiving payment.  For most states that will be by making a payment to the state’s own tax website, or by mailing a check or money order.

https://ttlc.intuit.com/questions/1900884-what-are-my-options-for-getting-my-state-refund-or-for-paying-any-state-taxes-i-owe

https://ttlc.intuit.com/questions/1901670-how-do-i-contact-my-state-department-of-revenue

When you are in the File section of the program and are shown the option on how to pay the federal taxes owed, select the option to mail a check.  Then you can go ahead and e-file the return.  You do not write a check or mail the payment.  You can use the IRS website for paying by credit card - https://www.irs.gov/payments/pay-your-taxes-by-debit-or-credit-card