Wrong withholding entered

[GingaNinja]

I received letter 4464c.  I e-filed and realized I transposed a number.  This resulted in a much larger return.  Should I now amend in turbo tax and resubmit the return through e-file?

[GingaNinja]

I have not yet received my return.  But do I wait until I am rejected?  Or can I amend now?

[Mike9241]

The purpose of the IRS Letter 4464C is simple. It mainly informs the recipient two things.

First, the department has received the income tax return. Second, the person cannot expect to receive their tax refund anytime soon because it is still under review. In most cases, the delay is only 60 days.  The IRS instructions for 1040-X say "File Form 1040-X only after you have filed your original return.". Generally, on this forum, the advice has been to wait until the original is fully processed before filing an amended return - the reason being if the IRS makes changes to the original then the amended is going to be wrong.  Don't know the nature of the error you made. sometimes the IRS will catch it and adjusts automatically. 

[Imwiththepyr]

What was the outcome of this, if I may ask? 

[GingaNinja]

I had to wait a long time for the IRS to do their investigation/research.  They eventually sent me another letter asking what caused the discrepancy. I told them it was a data entry error on my part.  I eventually got my refund with interest added in October.