I filed my 2018 w2 early, then got a 1099 later, made amended return with TT and I owe $1k, do I have to send 1040x by tax day or do I still have up to 3 years to fie?

[MichaelL1 · Accepted solution]

You need to pay the tax by 4-15-2019 and mail the return in to avoid any penalties and interest.

If you have a refund coming you can file up to three years later and get the refund with interest paid on it.