I submitted my 2016 on March 13, 17 with turbo tax. It recommends that I submit form 8453 which recommends form 8949. Why?

[mlinden1950]

I paid estimated taxes in 2016. You include it in taxes from W-2 and 1099 on line 64. Shouldn't estimated taxes be on line 65?

[Opus 17]

Form 8949 is for disposal of capital assets -- maybe you have sale of stocks, or some kind of property.  In some cases, form 8949 can't be e-filed with your return.  In that case, you can e-file the rest of your return but you must mail a printed copy of form 8949.  Form 8453 is a cover page that allows the IRS to link the mailed form to the rest of your electronic tax return.

For your other question, estimated payments should be on line 65.  I'm not sure why they wouldn't be.  Did you verify that your estimated payments are recorded properly?  Check the Estimated and Other Taxes Paid section of the Deductions and Credits page.