Fiona,

Surely if you husband registers as being single and in time you come to CH, then you will have all sorts of problems later down the line. The Swiss don't forget and everything is documented, so it will come back and bite you.

Just be truthful in CH about your circumstances. On the issue of tax you will have to get some advice regarding a married couple not living in the same country.

Others in the forum will no doubt add their comments.

Andy