Does the co-sponsor (and/or primary sponsor) have to fill out all the other fields (bank, property, stocks, bonds, life insurance, ...) or is it sufficient to fill out the annual income field (provided that income is sufficient)? Or is it OK not to give out all the other information? Should they be marked with N/A or just left blank?

If your income or your co-sponsors income is fine by itself. Then there is no need to show assets or anything else. If you do show them you will have to include documentation to support it.

Yup thats right.

Ok, so should those fields be left or marked with N/A?

I left them blank with no problem. They are applicable and I saw no reason to write "none". I suppose you could write on one line, "Income alone is sufficient." above the rest of the information but again, I didn't and the lazy bones is sleeping peacefully in our bedroom right now.

Great, thanks. Well, Stating "none" would technically mean having to prove having $ 0 on the bank accounts, I think. We're just going to leave them blank

TomTom,

One can provide whatever information they want to provide, and withhold whatever information they want to withhold. A decision will be made base on the information that is provided and is documented.

Yodrak

I wrote down my bank balance at that time and left the rest blank. We had no problems - and then I did the same thing w/ the I-864 for AOS.