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@abctax55 wrote:

YVW....

Off topic - what software do you use?

I'm looking for someone with software that prepares AND efiles F 1042.  I don't think Lacerte does.

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Me?  Only ProSeries.  However, I think the 1042 is filed more like a W-2 or 1099.  So some of those third party service do it, although you would need to manually enter everything. 

This is one of the popular companies for 1099s, and it seems like they do a 1042.  I think many of the other companies do the -S, but this was the only one that Google showed that does the non-S (at least among the commonly used companies).

https://www.tax1099.com/efile-form-1042