Has anybody been there, done that, and got a t-shirt they could lend me?
I have a total phobia about forms! Especially those of the tax variety. I have 3 to fill in:
2042 K
2042 CK
2047-K
I toddled off to the tax office, just before the cut-off date, and, helped by a very nice man, got them filled in. I enquired about filing online (so I could keep the forms as file copies) and was told they looked exactly the same online. Phew, I thought… that gives me another fortnight to pluck up courage.
Tonight, I decided that I absolutely had to face the fear and get on with it.
Sorted out the registration bit with no problems and then disaster struck: MY forms are not listed online!
I’ll phone the office for advice tomorrow but wondered if anybody else had come a cropper, and how they solved it…
Thanks Katie… another useful link. 
http://www.connexionfrance.com/expatriate-information-sheets.php
here is another link you may find helpful - will cost 5 eu but is in english and is quite comprehensive
This was my first year for doing taxes online so I was looking for forms with the same reference numbers as the paper ones that arrived through the post.
In the end I called up the helpline number on the website and the operator explained that the K and CK suffixes only referred to paper versions; I just needed the 2042 and 2047. It was, as you said, plain sailing from then on.
who told you what forms to fill out - I have been doing my taxes on line fo 3 years and have found it excellent. I have never heard of forms ending with K
here is a link that might help you and help you download the most likely forms that you need
If you need help - then I can help with some of main rubiques - but I AM NOT AN ACCOUNTANT - and if you are really struggling would suggest you contact one…