Hannah Bietz

Your bank balance looks healthy, invoices are going out, and yet you still cannot answer a simple question: are you actually making money? Two numbers settle that question, and confusing them is one of the quietest ways self-employed people misjudge their own business. Those numbers are gross margin and net margin. Gross margin measures the profit left after the direct costs of delivering your work, while net margin measures the profit left after every expense, including taxes and overhead.

I learned bookkeeping the hard way: late nights, coffee, and a shoebox of receipts. I wanted control without burning my entire budget on software. I needed clean invoicing, easy expense tracking, and tax-ready reports. I talked with solo designers, rideshare drivers, Etsy sellers, and consultants about what actually worked for them. What surprised me most was how tricky the choice felt. “Cheap” tools hid limits. “Popular” tools were pricey once you grow even a little.

A client loves your work and says they want you on call for the next few months. It sounds like stability at last, until they ask what you charge for that arrangement and your mind goes blank. Should you bill hourly? Request a lump sum upfront? This is the moment a retainer fee enters the conversation, and understanding it can turn unpredictable freelance income into something far steadier.