New business expense deductions
I know this question may be similar to others, but wanted to ask for my specific situation. I am starting a business that has 2022 expenses for software development. Since the development is still in progress, I haven't actively started marketing product, and so no income from that business in 2022. I do have income from other sources.
Is it legitimate to deduct the expenses before actively engaging in commerce of a finished product to offset other 2022 income sources?
If I enter the full total of expenses in TurboTax, will any unused portion of those expenses (not needed to further reduce my 2022 taxes) be available to forward to following years? Or would it be best to only enter the dollar value of expenses needed to maximize my deductions in 2022? Thank you!