The first invoice from a family law firm is the moment the engagement letter stops being paperwork and starts being arithmetic. Most clients skim the total, wince, and file it. A careful reader does the opposite, working from the bottom line back up through the entries that produced it, because the first statement establishes the pattern every later statement will follow. If a habit needs correcting, whether that is over-detailed conferences, duplicated review, or an increment applied too generously, the cheapest month to correct it is this one.
Start with the shape of the bill, not the entries
Before reading a single line, establish which kind of document you are holding. An hourly statement lists dated tasks, a timekeeper, a duration, and a rate, and it should reconcile against your engagement letter's stated rates without any translation. A flat fee statement looks entirely different: it names a stage, perhaps petition through temporary orders, and reports what portion has been earned and billed. Set the two side by side and the reason for the difference in scrutiny becomes obvious. The hourly bill invites you to audit effort; the flat fee bill invites you to audit scope, and the question shifts from how long to what is included.
The three things a time entry has to tell you
A usable entry identifies who did the work, what the work was, and how long it took, in that order of importance. Initials matter more than clients expect, since an hour of partner time and an hour of paralegal time can differ by a factor of two or three, and routine document assembly appearing under the highest rate on the sheet is a fair thing to raise. Task descriptions should be specific enough to jog your memory: "draft response to opposing counsel's discovery request" tells you something, while "attention to file" tells you nothing you can check. Then the increment. Firms commonly bill in tenths of an hour, six minutes, and a two-minute phone call rounded to a tenth is normal, while three separate tenths for three emails sent within the same minute is worth a question.
Costs are not fees, and they behave differently
Keep the two columns separate in your head, because they answer to different logic. Fees are the price of professional time and are negotiable at the front end, in the engagement letter, and rarely afterward. Costs are money the firm advanced on your behalf: the filing fee for the petition, the process server, court reporter and transcript charges, a parenting evaluator's deposit, records subpoenas, sometimes copying at a stated per-page rate. Those should be verifiable against a third party's own invoice, and a firm that passes through costs at actual amounts is easy to reconcile, while one that marks up copying or mileage should at least have disclosed the rate in writing beforehand. Ask for the underlying receipt on any cost line above a threshold you set for yourself, perhaps a hundred dollars.
Follow the retainer, dollar by dollar
The advance you paid usually sits in a client trust account, and it remains your money until it is earned. So the statement should show a beginning balance, the fees and costs applied against it, and an ending balance, and those four numbers should agree with each other and with the last statement. This is the single most useful reconciliation you will do, both because trust accounting is closely regulated in every state and because the ending balance predicts your next cash call: a replenishment clause typically triggers when the balance falls below a stated floor. Keep every statement, since the Internal Revenue Service is responsible for how legal fees are treated on a Form 1040, and the allocation between personal, tax, and business-related advice only exists if someone wrote it down at the time.
How to raise a question and keep the relationship
Query the entry, not the character. An email that says you are reconciling the statement and would like to understand two lines, quoting the date and the description, gets a different response than a general complaint about cost. Do it within a few weeks, while the work is recent enough for the timekeeper to remember it. Most firms adjust a genuine duplication without argument, because the alternative is a fee dispute, and state bar associations in many jurisdictions offer fee arbitration precisely because those disputes are avoidable. Reading closely also buys you something more useful than a credit: an accurate picture of what the next stage of your case is going to cost.
The reader who reconciles the first invoice tends to get shorter, clearer invoices thereafter, and finds the monthly number stops being a surprise.