The Swedish Tax Agency manages civil registration of private individuals and collects taxes such as personal income tax, corporate tax, VAT and excise tax.
If you have moved to Sweden from abroad and are planning to live here for one year or more you should normally be registered in the Swedish Population Register. You have to visit a Tax Office.
Registering a business for tax purposes differs depending on if you are currently operating a business abroad that you want to establish, or if you are starting a new business in Sweden.
As a Swedish resident, you can obtain a Swedish identity card from the Swedish Tax Agency. To apply you must visit a Tax Office. You must be able to prove your identity.