If you are not satisfied with a decision from the Swedish Tax Agency, you can ask the Swedish Tax Agency to reassess it, by sending an application to the Tax Office that decided in the matter.
An application for a reassessment is to have been received before the end of the sixth year after the income year. Do not forget to sign your application.
You can appeal a Swedish Tax Agency decision to the Swedish Administrative Courts. The appeal is to be made in writing and sent to the Swedish Tax Agency Tax Office that made the decision that you wish to appeal. The appeal is to be received no later than the sixth year after the relevant income year. Please do not forget to sign your appeal.