Can I Edit the form 9465 installment agreement I when all the way back to income and no luck tried to clear all and start all over again but the system didn't let me

I made a mistake on this form, and the only way I was able to correct it was to delete the form.

Go to Tax Tools

Select Delete form and Delete Form 9465

Go back to reviewing your file and on the payment portion, select revisit so you can fill out the form all over.

Hope this helps!