That doesn't sound like a deductible expense at all. The Wall Street Journal is a general newspaper with something of a business orientation. It's hard to see it as being exclusively investment advice or business-related. What kind of business are you in that makes it necessary to subscribe to the Wall Street Journal?
If you do deduct it, the effect on your tax, if any, is the same whether you call it investment expense or job-related expense. Either type of expense is a miscellaneous itemized deduction subject to the 2% of AGI limitation. That means that 2% of your Adjusted Gross Income (AGI) is subtracted from your total miscellaneous itemized deductions. Only what remains is deductible. In addition, your total itemized deductions must be more than your standard deduction for the itemized deductions to give you any tax benefit.
