The sooner you pay, the less interest you will be subject to. Why are you waiting to be notified of the amount or a date? If you are unsure how much you still owe, you can check your online account with the IRS. You can pay directly on the IRS site.
https://www.irs.gov/payments/your-online-account
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-mone...
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
