Hi there,
My first advice would be that your husbands employers need to contact an accountant who knows about the ins and outs of LAFHA. There is very little info on the net about it.
So here are the answers/my thoughts to your questions:-
1. A competent accountant should be able to find out whay they need to know.
2. You should be able to claim your monthly rent plus a food allowance which is documented on the ATO website (there is also a link on here to the ATO page - I am surprised you didn't find it while your were searching for LAFHA posts). There is no guidance that I have seen regarding rent. However I would suggest that as long as your rent is not excessive and you aren't living in a 5 star penthouse apartment then there should be no issue ! $1650 pcm seems acceptable to me - we claimed $420 pw when we got LAFHA.
http://www.ato.gov.au/businesses/content.asp?doc=/conte...6140.htm&page=13&H133. No calculators that I know of - its not that difficult to work out.
4. Again you probably need to ask an accountant how Fringe Benefit Tax (FBT) affects them. What I can tell you is that the housing component does not attract FBT but the food component does. If the company doesn't want to have to pay FBT then they could just give the accomodation LAFHA - its better than nothing !
5. LAFHA can be claimed for as long as you are living here on a 457 visa and have not indicated your intention to make Oz your home. IE once you have lodged an application for any form of permanent visa you must stop claiming LAFHA.
6. YES - it must be in his contract. However I am not sure if it can be retrospectively applied as you are suggesting. You should find this bit out first as you may now not be able to claim it at all !
As I said above its really quite simple to work out.
Read this !
http://gomatildaforums.com/eve/forums/a/tpc/f/5726004143/m/5801034952First work out the monthly amount of LAFHA you are entitled to (rent + food). So as an example this might be $3000 (allowing $306 pw for food).
Then subtract this from your monthly gross salary - $90,000/12 = $7500 - $3000 (LAFHA) = $4500. This is the amount that you will pay tax on. There are tax tables on the ATO website that tell you how much should be witheld each month to cover tax and medicare. The link to it is also on here in a recent post by me on the subject of LAFHA.
So if for example the tax to be withheld is $1000 your take home pay is $3500 (4500-1000). But here comes the good part ! You then get the montly LAFHA amount ($3000) added back on and you go home with $6500. LAFHA is a way to not pay tax on a proportion of your income. If you did not get LAFHA you would go home with maybe $5000.
Also read this for a more exhaustive explaination.
http://gomatildaforums.com/eve/forums/a/tpc/f/5726004143/m/5801034952 Hope this helps !