Even if you keep electronic records using spreadsheets or accounting software like Microsoft Money or Intuit's QuickBooks, you should keep hard copy records of all income, expense, and deductable you will be reporting on your taxes. The reason for this is the advent of a computer crash or the problem of outdated software should you have the unfortunate experience of being audited. This being said, using electronic records can greatly streamline your taxes. Several programs can import your information directly into TurboTax. You can also email your tax accountant all your information at the touch of a few buttons.
You can print out your records once a month so that you have a hard copy. Both Money and QuickBooks offer reports features that allow you to print out just the relevant tax information. Then, you can staple the report to any supporting documents you might have. If you use a spreadsheet, you can print out the month's spreadsheet for your hard copy records.