If I download information from FInancial Institution does it load all information or do I need to go through each line item, ie Interest, dividend, etc

[Bsch4477]

While the electronic transfer of data should be accurate, you are responsible for what is reported in your return. You should trust but verify. 

[Mike9241]

Maybe not everything. Info could be missing if you had foreign tax credits or had investments in widely held fixed-income trusts.  Municipal interest may or may not be taxable in your state if it has an income tax