by Little Ash on Fri May 13, 2011 7:51 pm
Basically whether you are tax resident in Norway will depend on the number of days you spend in Norway. See http://www.skatteetaten.no/Upload/Brosjyrer%20og%20bok/OmSkatt-Eng-LR.pdf.
From what you say it sounds like you will be living more or less permanently in Norway and will therefore be regarded as "tax resident" in Norway by the Norwegian authorities which means you will probably have to pay tax like any other Norwegian regardless of the fact that you are still 'earning' your wage and being paid in the UK.
Tax that you have to pay includes income tax or 'inntektsskatt' (the equivalent of PAYE + national insurance in the UK), and wealth/asset tax or 'formuesskatt' which is currently payable annually at 1.1% of the value of all your assets (i.e. savings, investments, property etc). Formuesskatt is based on the value of your assets on 31st Dec each year. A word of caution - even if you only become 'tax resident' in Norway from July 2011, you will still be liable to pay the same amount of formuesskatt for the 2011 tax year as if you had become 'tax resident' at the start of Jan 2011 i.e. it takes no account of the fact that you will have only been 'tax resident' for 6 months of the tax year.
Another point worth mentioning - it is not possible to shelter any of your savings from Norwegian tax by keeping them in the UK (without not declaring any assets to the Norwegian authroities which of course would be illegal). For example, if you have tax-free ISA savings in the UK and you are deemed to be 'tax resident' in Norway, the Norwegian authorities will not recognise the UK ISA savings' tax-free status so the UK ISA savings will be liable to both income tax and 'formuesskatt' in Norway. The Norwegian tax system does not incentivise one to save for one's future in the same way that the UK system does.
When you come to Norway it will probably be worth you taking a trip down to your local tax office to get them to help you out. They are obliged by law to act in your best interests.
If you would like any more info, let me know.