Understanding Your Law Firm's Break-Even Point (And Why Every Owner Should Know Theirs)

There is one number every law firm owner should be able to say out loud without checking a spreadsheet. Almost none of them can.

It is not your revenue. It is not your billable rate. It is your break-even point, the amount of money your firm has to bring in each month just to cover the cost of staying open. Below that line, you are losing money. Above it, every dollar starts working for you. And if you do not know exactly where that line sits, you are running your firm in the dark and hoping the lights stay on.

Most attorneys never went looking for this number, so let's find it together.

What break-even actually means

Your break-even point is the revenue level where your firm's income exactly covers its costs. Not profit. Not paying yourself well. Just covered. Zero.

It sounds simple, and the concept is. The reason it matters so much is that it turns a vague feeling ("we had an okay month") into a hard line you can measure every single month. Did we clear break-even or not? That question alone changes how you make decisions.

Here is why so few firm owners know their number: they look at the bank balance instead. A healthy balance feels reassuring, but it can hide a firm that is slowly slipping backward, especially when a chunk of that balance is really client money sitting in trust. (If your operating and trust pictures ever feel blurry, that is a separate problem worth solving first.)

How to calculate break-even point

You need three things, and you already have all of them in your books.

1. Your fixed costs. These are the expenses that show up whether you bill a single hour or not: rent, software, malpractice insurance, salaries, your loan payments. Add up a normal month. For most small firms this lives somewhere between predictable and frighteningly large once it is all in one place.

2. Your variable costs. These move with your caseload: filing fees, expert costs, contract attorney hours, payment processing fees. Estimate them as a rough percentage of revenue.

3. Your contribution margin. This is the share of each dollar of revenue left over after variable costs. If variable costs eat 20 cents of every dollar, your contribution margin is 80 percent, or 0.8.

Now the math:

Break-even revenue = Fixed costs ÷ Contribution margin

So a firm with $40,000 in monthly fixed costs and an 80 percent contribution margin needs $50,000 in revenue each month to break even ($40,000 ÷ 0.8). Anything under $50,000 is a losing month, even if the bank account still looks fine.

That is your line. Write it down.

What changes once you know your number

This is where break-even stops being an accounting exercise and starts being a management tool.

Pricing gets honest. Once you know your monthly floor, you can see whether your rates and your collected revenue actually clear it. This is also where your realization rate comes in, because billing above break-even means nothing if you are only collecting a fraction of what you bill.

Slow months stop being a mystery. When you know it takes $50,000 to break even, a $42,000 month is not a vibe, it is a measurable $8,000 gap you can plan around with your cash reserve.

Hiring decisions get clearer. A new associate or paralegal raises your fixed costs, which raises your break-even line. Knowing your current number tells you exactly how much new revenue that hire has to generate before it pays off.

Your P&L finally has a reference point. A profit and loss statement is far more useful when you can hold it up against a target. If you are not yet reading yours closely, your monthly P&L is trying to tell you something, and break-even is the first thing it wants you to hear.

The bigger picture

Break-even is the foundation that budgeting, profit margins, and growth planning all sit on top of. It is the difference between running your firm on gut feeling and running it on data. And once you build it into your budget, you stop guessing whether a month was good and start knowing.

Most firm owners we work with have never calculated their break-even point until we sit down and do it with them. The reaction is almost always the same: a long pause, then "I had no idea it was that high." That moment is the start of running the firm with clarity instead of crossed fingers.

If you would like help finding your firm's number, and building the financial habits that keep you above it, that is exactly the kind of clarity a virtual CFO is built to provide. Accounting Girl works with solo and small law firms to turn their numbers into decisions. We would love to show you yours.