can I pay in advance?

[Stereo]

hi guys, 

Is my first time preparing my taxes, I already did it, but I had to request for an extension, my question is, can I pay in advance? I mean can I want to amortized debt that I got with the IRS or just make the payment that I arrange with the IRS? it is possible pay before with a different amount that the one I arrange with the IRS?

kind regards 

[JotikaT2]

Since you have already filed your tax return, you will no longer be able to make any changes through TurboTax, but you can do it online through the IRS.  See the link below for more information on how to do this.  

IRS site to apply for installment plan or change an existing plan 

[Stereo]

thank you for you answer, is value to me!