How should I maintain records as a Self employed Individual who has a home office and its married filing jointly

I am self employed sole proprietor and have a couple of 1099-Misc forms to report, but I am also compensated by another company on a W-2.

 

I also would like to report Business Expenses and some Home Office Expenses.

 

I am married and I would like to file jointly. My wife is employed full time and reports a W-2 and she doesn't participate on my business.

 

We pay our home expenses out of a joint checking account and that is where my records for the home office portion would come from.

 

1) How should I file my takes? I have the home and Business TurboTax Product. I have always filed single, but now with our incomes combined, me and my wife benefit by filing jointly as it reduces our overall tax bracket level.

 

2) In order to support my Expenses for Business directly and Home office, for those items that are paid for from our joint account. Are those bank records allowed to claim the expenses? does the fact that is a joint account affect the filing in any way?

 

Thank you!