step 1
you must have a paper copy of the return you originally filed.
that's most important.
Step 2.
after that prepare your revised tax return by any means, you chose (turbotax 2016 cd/download , for example or other software).
print that return so you can compare the two tax returns.
step3
get the 1040X for 2016 in fillable PDF format at irs.gov and it's instructions.
it will tell you how to prepare, assemble and mail an amended return.
step 4
Tell yourself not to wait until the last minute.
