The deadline today is for the filing of the tax return itself ONLY and ONLY if it was on extension. If you did not put the return on extension by the 7/15 deadline then it is also LATE and the failure to file penalty + interest is piling up as I type.
The deadline to PAY the balance due was 7/15/2020 ... if you were not ready to file on 7/15 then the estimated balance due payment should have been sent with the extension which was due 7/15.
If you have an unpaid balance due now then it is officially 3 months late and the failure to pay penalty + interest is currently accruing. You need to pay asap to stop the bleeding. My point is if the payment is made today or tomorrow is immaterial ... the IRS will mail you a bill for the accrued fees based off the date they are finally paid. If the IRS doesn't accept the wire transfer today then they will simply keep the juice running until they receive the payment.
