I e-filed my 2018 return through TurboTax and owed $2500. I have not made a payment, and planned to pay by check in April. In the meantime, I realized that I used an incorrect cost basis and overstated my income. My amended return shows a $216 refund. Do I need to wait to file the amendment until I pay my taxes? Can I file the amendment now and only pay the net amount due?
