I opened shop in February 2017 and spent the year on clients rather than implementing systems. Didn't get QuickBooks until December. Have a random spreadsheet or two of Schedule C items. Have business expenses comingled between an operating account and my personal checking account. Sole Proprietor. What's the best way to capture as much of my deductions as possible? Are we talking print my monthly statements and go line by line here? I can't be the only one who backburnered the accounting in year 1. Tips appreciated!! Would prefer a DIY answer, rather than hire help. I have a CPA, but she wants me to do the heavy lifting.