I have already filed a tax extension which was approved. I now realize perhaps I should have submitted an estimated payment. Can I still submit an estimated payment?

[Leonard]

Yes, you can still file an estimated payment after you have filed for an extension.

[goholmes]

Thank you!  Can you tell me how to do that?  I don't see an option on the TuboTax website when I click File an Extension.  Do I need to use a different software or is there a way to amend the extension?  If so, can you direct me on where to find that?

[Leonard]

The following link to the IRS web site is for Form 1040-ES and has the instructions and mailing addresses for Form 1040-ES.  The form can be filled out online, printed and mailed with your payment to the address shown four your state. <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-pdf/f1040es.pdf">https://www.irs.gov/pub/irs-pdf/f1040es.pdf</a>