I have a buddy whose wife stays home with the kids and she does an at home baking business, they figured out all of the codes and legalities and are running it legit. Someone asked him during our fishing trip this year how it was going and they had just done their taxes and he confirmed it ended up being more of a break even deal that she enjoyed doing, and that it did not make any money.
My wife went through a couple of small business ideas, beauty products, and an in home yoga studio before she got into book keeping. She runs quick books for a half dozen businesses and it does pretty well.
I've messed around with a variety of things, I've never done it for the tax write offs, I did it to make money, being able to write off things that we already used anyway is a bonus, but I wouldn't do it to solely write off my phone bill. One thing to fully understand is that writing off an asset is just a deferment of taxes, if you ever plan to sell an asset that's been depreciated you need to understand your re-investment strategy or tax liabilities.
Had to google this to communicate it effectively, but keep this in mind
"Before you ever take a home office deduction, you need to think about the long-term possibilities.
When you sell your house, after having claimed the home office deduction, the deduction can affect your capital gains taxes. The capital gains tax exclusion allowed from the sale of your primary residence could be reduced by the amount that you have claimed for depreciation on your home office. Note
If you have always used the simplified home office deduction, which was instituted in 2013, this does not apply. "
Somebody brought up something like this a few months ago, theres a ton of podcasts and audio books out there, "The personal MBA", and "Rich Dad, Poor Dad" are some basic listens to get you thinking about making money, its all about numbers and their relationship with each other, if you can't see a clear path to the financial goal you have to keep crunching numbers till it makes sense or its apparent its not going to work. If the tax savings are still your goal, calculate what they will actually be v.s. the investment of time and money.