I keep a file all year, with receipts and duplicate checks for deductible expenses. Sometime in Feb. I go through the file, and separate all the data into categories and start filling out the forms. After I get my 1090's in the mail, for my business, and our eldest son does the family business parts, then I complet the forms for our personal taxes with Turbo Tax (I love it) and efile. I've used Turbo Tax for about 8 years, for my little business and our personal taxes and it is great. My former CPA didn't recommend it, and I made him tell me exactly why..................it makes people like him lose work. (he works out of his house) He admitted it's a good program.
We usually have to pay even though we pay quarterly too. The family business keeps growing, which is a good thing.