If I had a Home Based Business and generated no income but had many expenses, can I file taxes? My expenses consisted of travel, dinner meetings with potential clients, etc. Can I file these deductions/credits even though I did not generate any income?
Assuming the US, if a human assessor audited you, could you show a future profit motive or will they conclude you are expensing a hobby?
If you answer yes, you are likely to only be deducting limited expenses this year, carrying forward losses to your profitable years. See the examples in pub 535: http://www.irs.gov/publications/p535/ch01.html#en_US_2014_publink1000208633
In the US, you can only take a tax deduction on expenses to the extent that they offset income. For an S corp or LLC, if the business had no income, there's no deduction to take. If you have a sole proprietorship, these expenses can offset other income.
You can also carry-forward net operating losses to future years when you have more income.
See the article How to Carry Over Business Expenses