One Template, Multiple Reports 

Use one template to programmatically create individualized outputs.

In[1]:=

X Map[ GenerateDocument["ExampleData/LetterTemplate.nb", #1] &, { <|"To" -> "Anu Reddy", "Base" -> 6500, "AnnualRaise" -> 0.04|>, <|"To" -> "Denise Malcolm", "Base" -> 9600, "AnnualRaise" -> 0.03|>, <|"To" -> "Steve Etcheverry", "Base" -> 4250, "AnnualRaise" -> 0.06|> }];

Here is one of the generated documents.