Amending Tax Return

What is the name of your state? MO

I filled my Federal tax return...and received a rebate in mid February. Since then I received a statement from my 401K about money I took out, and needs to added to revenue. I have paid the taxes on this when I took it out.

Also, since I use my personal vehicle for business (over 20,000 miles last year) I did not know I could write off the mileage.

How can I amend my tax return before the April 15th deadline, and which forms should I use. Thanks

File form 1040X and attach any changed forms or schedules. I recommend you have a tax specialist assist you in completing your amended tax return - they might find additional deductions and can help keep taxpayers out of trouble by making sure the right deductions are taken in the right place.

I appreciate the advise.