This would be more similar to the IRS sending you a filled out 1040 along with a note: > We have provided a pre-filled 1040 based on your W-2s, Form 1099s, 109

This would be more similar to the IRS sending you a filled out 1040 along with a note: > We have provided a pre-filled 1040 based on your W-2s, Form 1099s, 1098s etc. We have made the following assumptions while preparing: > your marriage filing status remains unchanged since last year, > your dependents remain unchanged since last year, > you have no income beyond that reported to us, > you do not qualify for any deductions/ credits beyond those indicated in forms we have received. > > If all of the above assumptions are correct, you may sign the enclosed form and return it. Otherwise, you may use the provided pre-filled numbers and worksheets as a starting point, and make the necessary changes. In the above scenario, one can very clearly see the amount of tax one paid, and the amount of income, as both are clearly indicated on the "postcard"-sized main 1040 form (which is a good joke as basically everybody will have one or more additional forms they need to attach to it.)