Under 'Ret årsopgørelse/oplysningsskema' (Change your tax assessment notice/tax return), you can click on the amounts in each box to see who reported them. 

You can see more details about the reports in E-tax under 'Skatteoplysninger mv.' (Tax information etc.). Select 'Alle oplysninger' (All information).

In 'Skatteoplysninger mv.' (Tax information etc.), you can also compare the amounts in your preliminary income assessment and your tax assessment notice by selecting 'Forskuds- og årsopgørelsesoplysninger m.v.' (Information on your preliminary income assessment and tax assessment notice etc.).

You can change your tax assessment notice several times up until 1 May. Every time a new tax assessment notice is generated, it is given a new tax assessment notice number. Keep an eye on this number so you always know which notice is the latest. All your tax assessment notices are available in your tax folder. 

However, in the period 14-31 March, the tax assessment notice will not get a new number even if it is changed as it is only a temporary tax assessment notice in this period. 

If you discover after the 1 May deadline that you need to change your tax assessment notice, you must 'reopen' it. You can do so up to four years after the end of the year of taxation. You can often make the change in E-tax yourself. If you do so, you will receive your updated tax assessment notice immediately, and it is faster to do it this way if you are entitled to a refund.

The tax assessment notice for previous years can also be changed electronically by reopening it in E-tax. Select the 'Ændre årsopgørelsen - tidligere år' menu item (Change your tax assessment notice - previous years), and select the relevant year.