Usually, if you are a contractor or small business with less than 5 people, an Excel spread sheet should be sufficient to get a rough idea of how much money you

Usually, if you are a contractor or small business with less than 5 people, an Excel spread sheet should be sufficient to get a rough idea of how much money you need to set aside for expenses & taxes. From that, I knew that I had to set aside roughly 50% of my revenue (in the beginning). The details are best left to your accountant / tax advisor, who will book everything correctly once a month / quarter / year, depending on the details of what kind of business you run. Now that my income is pretty stable, I just "pay" myself a monthly salary (since I am a "sole proprietor", there isn't really a legal difference between me and my company, so this just means moving money from my business account to my personal account). At the end of the year, I see how much money is left over and I put it in a savings account. I've tried all kids of automation, but I found that just creating a manual excel spreadsheet is the easiest, and the most flexible.