I-864 or I-864A...Which do I need?

[nutmeg84 0]

My husband (a Canadian) and I have been living with my parents for the last 6 months and we are filing for AOS. I am working part-time and I dont make enough $$$ to be his only sponsor, so my mom and/or stepdad have agreed to be co-sponsors. My stepdad makes over $100,000/yr. and my mom makes around $40,000/yr. They file their taxes jointly and they havent claimed me on their taxes for the last 3 years. We will probably be living with them for at least another 6 months and it's just the 4 of us living here.

My questions...

1. Do I need both my mom and stepdad to be co-sponsors since they file taxes jointly or do I just choose one of them to be the co-sponsor? If I choose only one parent, how do I show their individual income on our paperwork, when their taxes show their income is combined?

2. I know I need to fill out the I-864 form, but what form does the co-sponsor (my parent) fill out? The 864 or 864A or both? Do both parents fill out a form or just one parent?

3. It asks to show proof of relationship between sponsor and co-sponsor. How do I proove my relation to my stepdad or my mom when we all have different last names?

4. Lastly, where the heck do I send my AOS packet when it's complete. On the individual forms themselves, they say to send them to your local office depending on what state you are in. Then I read somewhere else that all completed AOS packets should now be sent to the Chicago Lockbox. Do you know which is correct?

Thank you so much for your help. I have been reading forums every day and I always read conflicting responses. I have even tried to call the help number listed on the forms and those people have no idea what they are talking about. They tell me to read the instructions on the forms (which is why I am calling them, b/c I have no clue what the forms are trying to explain!) Anyway, Thanks again for reading this and any info you can give me will be greatly appreciated!

[Dr_LHA 3]

If you live with your parents, then whoever makes the money should sign the I-864A, and then you include their income on your I-864.

[Cécy 44]

I don't know about the co-sponsor part, but you send everything at the lock box in Chicago.

For your mom, wouldn't your birth certificate show her name? If so put an extra copy of it and you can join her marriage certificate which should have her maiden name and her new married name.