How to fit tabular report with > 30 columns fit onto a single print page

Please excuse my English and nay grammatical errors you observe.

I am trying to create a report in SSRS, the data-set contains more than 30 columns. The issue is that all columns don't fit onto a single page and spills out on the next page.

As this is a financial report, every column is important. Readability is also one concern here.

Also i have tried going landscape and using a larger page size (A3 and A2). This works perfectly for exporting reports to PDF but printing is another issue to be dealt with. The only printer/pages available here for reporting are of size A4.

To summarize: Need to fit > 30 columns for a report in a single page with focus on readability, exportability and fitting the print on an A4 page size.

Any help related to design ideas or pointers where i should look would be appreciated