The Invoice
Why it Matters
An invoice turns a firm’s time into a client’s debt, and much of what goes wrong with a fee goes wrong after the time is recorded. Some entries should never reach the client, and someone has to decide which ones. The money that comes back may belong partly to the firm and partly to the client, and the rules say which account each part goes in. When a client refuses to pay, the firm can offer arbitration, withdraw, or claim a lien, and each works only if it is done the way the law requires. One month of a firm’s billing is yours to run, from the prebill to the lien notice.
Current Context
In April 2026, the Third District Court of Appeal held that a client may discharge a referral lawyer like any other lawyer (opens in a new tab). Fired by email, the referral lawyer in a wrongful death case filed a notice of charging lien on the recovery still to come. The lead firm held $25,000 of a later settlement in trust while the lien was fought, and the trial court awarded her an amount equal to her agreed 25 percent share of the fee. Applying the rule of Rosenberg v. Levin (opens in a new tab), the court reversed and sent the case back to value only her work before the discharge that the agreement covered. It denied rehearing in June 2026, and the email that fired her now marks the point after which her lien secures nothing.
Key Concepts
Prebill and Write-Down
The prebill is the draft invoice a billing lawyer reviews before anything reaches the client. A write-down bills less time than an entry shows, and a no-charge entry bills none, usually for time that served the firm, such as training or fixing its own mistake. Each is time the firm worked and will not be paid for, so each should rest on a reason the lawyer could give the client.
Costs
Money the firm pays out for the client’s case, such as an expert’s fee, a transcript, or a share of a mediator’s fee. The comment to Rule 4-1.5 says filing fees, transcription, and the like should be charged at the actual amount the lawyer paid. General overhead belongs in the fee, though a lawyer may agree with the client on a reasonable charge for in-house costs such as copying or computerized research.
Operating and Trust Accounts
A firm keeps money it has earned in its operating account and money that belongs to clients in a trust account. Rule 5-1.1(a)(1) puts advances for fees, costs, and expenses in trust, and Rule 5-1.1(b) says money entrusted for a specific purpose may be applied only to that purpose. Florida Bar Ethics Opinion 21-2 lets lawyers take payments through online payment services, if client money comes in through a separate account with the service and moves into trust promptly.
Card Processing Charges
The fee a card processor keeps from a card payment, which Rule 4-1.5(h) lets a lawyer pass on to the client at the actual charge for that client’s transaction. Opinion 21-2 has the lawyer pay the charge, not the trust account, unless lawyer and client agree otherwise, and it keeps chargebacks, the reversals of disputed card payments, out of trust. Section 501.0117, Florida Statutes, still bars a seller’s credit card surcharge, but the Eleventh Circuit held the statute unconstitutional in Dana’s Railroad Supply v. Attorney General.
Fee Arbitration
The Florida Bar’s program for deciding a dispute between a lawyer and a client over a fee, under Chapter 14 of the Rules Regulating The Florida Bar. Unless a discipline sanction requires it, both sides must agree, in a fee contract carrying the bold notice Rule 4-1.5(i) requires or in a request both sign. The award binds both sides, and the comment to Rule 4-1.5 says a lawyer should conscientiously consider submitting a fee dispute to the program.
Withdrawal for Nonpayment
Rule 4-1.16(b)(3) lets a lawyer withdraw when a client fails substantially to meet an obligation to the lawyer, such as paying, and has had reasonable warning that the lawyer will withdraw. In a pending case the lawyer also needs the court’s permission: Florida Rule of General Practice and Judicial Administration 2.505(f)(1) requires a written order after a hearing on the lawyer’s motion. On leaving, the lawyer must protect the client’s interests, including by giving reasonable notice and refunding any advance of a fee or expense not yet earned or incurred.
Charging Lien
A lawyer’s equitable right to have fees and costs for work in a case paid from the judgment or recovery in that case. The Supreme Court of Florida requires a contract, an understanding that payment will come from the recovery, a dispute or an attempt to avoid payment, and notice before the case ends. In John F. Schutz, P.L. v. Ally Financial Inc., the Fourth District treated a notice that named no amount and no asset as a notice of intent, which bound no bank.
Retaining Lien
A lawyer’s right to keep a client’s papers, money, and other property already in the lawyer’s possession until the client pays for all the lawyer’s work, recognized in Daniel Mones, P.A. v. Smith. Money entrusted for a specific purpose is outside it unless the client agreed fees could come from it, and Rule 5-1.1(b) bars setting off attorney’s fees against client money. When a lawyer and client dispute the lawyer’s share of money in trust, Rule 5-1.1(f) keeps the disputed part in trust until the dispute is resolved and has the rest paid out promptly.
Resources
- Invoice workbook (Temko Eden’s engagement terms for Coastal Keel, the February prebill with columns for your decisions, an Invoice sheet that builds itself from them, and the Payment sheet for the March 6 card payment. It opens in Excel or Google Sheets.)
- Zoho Invoice, free plan (opens in a new tab) (A free invoicing tool that logs time and sends invoices as PDFs, with up to two users, three projects, and 500 invoices a year. Use it in place of the Invoice sheet if you like, and put each entry’s date in its description.)
- Rules Regulating The Florida Bar (opens in a new tab) (Chapter 4 holds Rule 4-1.5, with the credit plan rule in subdivision (h), the arbitration clause notice in (i), and comments on costs and fee disputes, and Rule 4-1.16 on withdrawal. Chapter 5 holds Rule 5-1.1 on trust accounts, and Chapter 14 the fee arbitration program. Read the current chapter PDFs.)
- Fee Arbitration Procedural Rules, The Florida Bar (opens in a new tab) (How an agreed arbitration runs: one arbitrator for $15,000 or less and a panel of three above it, an informal hearing that bars most pre-hearing discovery, and a written award that binds both sides.)
- Consumer Guide to the Legal Fee Arbitration Program, The Florida Bar (opens in a new tab) (The Bar’s guide for clients: both sides must consent in writing, the arbitrator’s services are free, and the award can be collected like a judgment.)
- Agreement to Arbitrate, The Florida Bar (opens in a new tab) (The application both sides sign to start an arbitration: the amount in dispute, the fee contract, any court order on the fees, and each side’s consent.)
- Florida Rules of General Practice and Judicial Administration (opens in a new tab) (Rule 2.505(f)(1): a lawyer withdraws from a case by a written order entered after a hearing on a motion that states the reasons for withdrawal and the client’s contact information.)
- Florida Bar Ethics Opinion 21-2 (opens in a new tab) (Online payment services: separate accounts for earned fees and client money, processing charges paid by the lawyer and not from trust, and chargebacks kept out of trust. Advisory, not binding.)
- Florida Bar Ethics Opinion 88-11 (Reconsideration) (opens in a new tab) (What a lawyer must give a client from the file, and when a discharged firm may hold the file under a retaining lien. Advisory, not binding.)
- Section 501.0117, Florida Statutes: Credit cards and surcharges (opens in a new tab) (The ban on a seller’s credit card surcharge, still printed in the statutes, which the Eleventh Circuit held unconstitutional in 2015.)
- Dana’s Railroad Supply v. Attorney General, 807 F.3d 1235 (11th Cir. 2015) (opens in a new tab) (The Eleventh Circuit holds that Florida’s no-surcharge law restricts speech, not conduct, and fails First Amendment scrutiny.)
- Sinclair, Louis, Siegel, Heath, Nussbaum & Zavertnik, P.A. v. Baucom, 428 So. 2d 1383 (Fla. 1983) (opens in a new tab) (The Supreme Court of Florida sets out what a charging lien requires and holds a divorce firm’s lien properly perfected, where the client and the firm disputed the fee: $6,500 against $150,000.)
- Daniel Mones, P.A. v. Smith, 486 So. 2d 559 (Fla. 1986) (opens in a new tab) (A lawyer who first claimed his fee in a separate lawsuit had given no timely notice of a charging lien, but a retaining lien kept the disputed settlement money in the court’s registry until the fee dispute was decided.)
- Dowda & Fields, P.A. v. Cobb, 452 So. 2d 1140 (Fla. 5th DCA 1984) (opens in a new tab) (The Fifth District, which hears Daytona Beach’s appeals: a notice of intent to claim a charging lien does not by itself establish the lien, and the case goes back for the trial judge to adjudicate the lien and impress it on the judgment.)
- John F. Schutz, P.L. v. Ally Financial Inc., No. 4D2024-2838 (Fla. 4th DCA Mar. 25, 2026) (opens in a new tab) (A firm’s notice of charging lien that stated no amount and named no asset could not make a bank liable after the client withdrew most of the money awarded to her. Read it before you draft your notice.)
- Client Communications Forms and Letters, LegalFuel (opens in a new tab) (The Florida Bar’s practice resource center. Compare your letter with its Disengagement Letter for unpaid fees and its Terminating Client Representation Letter.)
What to Do
February’s prebill lands on your desk, and every dollar Coastal Keel finally pays runs through the choices you make next. You decide what the client pays for February, send the invoice, route the card payment that comes back, and answer the client when it refuses to pay. What you post is the invoice, with the workbook behind it, and the collection file: a letter and a notice of charging lien.
Part 1: Decide What the Client Pays
Temko & Eden, P.A. A three-lawyer firm on Beach Street in Daytona Beach. It still carries the names of its late founders. Dana Whitfield, the managing partner, handles civil litigation and real estate closings. Luis Ortega, a partner, handles family law and probate, and Kim Nguyen, an associate, handles personal injury. Marcy Cole is the legal assistant, Ron Pike is the bookkeeper and office manager, and you are the firm’s paralegal.
Temko Eden represents Coastal Keel Marine, Inc. in its breach of contract suit against Dunlin Dock & Seawall, LLC over a seawall, and it bills the case by the hour. Download the invoice workbook and read the Engagement Terms sheet first, because every decision in this activity answers to it.
A note from Dana Whitfield. Ron has run February’s prebill for Coastal Keel. Every entry matches our records, so the question isn’t whether the work was done. Decide what Coastal Keel should pay for each entry and each cost, and give me your reason in a few words. I’ll approve what you send up.
On the Prebill sheet, choose a decision for each of the 16 fee entries and the 4 costs: Bill, Write down, or No charge. For a write-down, enter the hours the client should pay for; for a cost, enter the amount. In the Reason column, name what decides it: an engagement term, a rule, or a fact in the File note. Then run the Write-Down Sparring Partner on the three decisions you are least sure of, and change any whose reason did not hold up.
Part 2: Send the Invoice
The Invoice sheet builds itself from your decisions, and an entry you did not bill appears on it with the words No charge. If you would rather build the invoice in the free invoicing tool in Resources, enter your billed entries and costs there and download the PDF. Read the invoice top to bottom as Coastal Keel will read it. At the foot of the Invoice sheet, in the box marked Payment instructions, write how to pay this invoice and how to send a deposit, in words that keep the two apart. Then write the cover email to Coastal Keel’s president, about 150 words, for Dana Whitfield to send. Say what the invoice covers, what the firm did not charge for and why, and whom to call with questions. Run the Client’s Eye Reader on the invoice and the email, and revise anything that would make the client call to ask what you meant.
Part 3: Route the Card Payment
A note from Ron Pike, March 6. Coastal Keel paid by card this morning through the Pay Invoice link: $11,412.50. Their controller says it covers the January invoice and the $5,000 deposit Dana asked for toward the engineer’s second inspection. All of it landed in operating, and the payment service kept $331.26. Where does each dollar go, and who pays the $331.26?
The Payment sheet holds the payment service’s record. Fill in its cells marked (your entry): the credit to the January invoice, and what belongs in the trust account and what stays in operating. Then say which account bears the processing charge and whether the firm bills that charge to Coastal Keel, with the rule or engagement term behind each answer. Next, write Ron a note of about 100 words in the box marked Your note to Ron Pike. Say what to move and why, under Rule 5-1.1 and Opinion 21-2, and what to change so the next deposit lands in the right account. Before you give it to him, test your plan with the Trust Routing Checker.
Part 4: Answer the Dispute
From Coastal Keel’s president, March 20. Dana, I’ve looked at February. It’s more than January, and we haven’t gotten anywhere near a trial. Your associate billed us for standing in our yard. My controller tells me Florida law bans credit card surcharges, so we won’t pay your card fee either. We aren’t paying February or anything else until this case is over. Take your fees out of whatever Dunlin pays us.
A note from Dana Whitfield, April 3. Coastal Keel has paid nothing since March 6, and the March invoice, $4,300.00, went out April 1. I held the card charge off it until this is settled. Draft a letter for my signature that answers the president’s email point by point, with what our file and our terms show. Tell him what the firm will do with the $5,000 in trust; Ron asked whether we could pay February out of it. Offer to take any amount he thinks is unreasonable to the Bar’s fee arbitration program, and explain how that works. Then give him fair warning: unless Coastal Keel pays both invoices, or pays what it doesn’t dispute and signs a request to arbitrate the rest, by April 17, we will ask the court’s permission to withdraw. Draft the notice of charging lien too. I’ll file it with the motion if it comes to that, and it shouldn’t fail the way the one in Schutz did.
Write the letter in 300 to 450 words, and check every statement it makes about a rule or the arbitration program against its source in Resources. Then draft the notice of charging lien for filing in the circuit court for Volusia County in Coastal Keel Marine, Inc. v. Dunlin Dock & Seawall, LLC. Leave the case number blank for Marcy Cole to fill in. Read Sinclair, Daniel Mones, Dowda & Fields, and Schutz first. Decide from those opinions what your notice must say, and on whom it must be served, for the lien to reach the money when the case ends. Run the Lien Notice Stress Test on your draft with the text of Schutz, and check each objection it raises against the opinion itself.
Part 5: Post Your Deliverables
Create one new discussion thread with two things. First, your invoice: the invoice workbook with its Prebill, Invoice, and Payment sheets filled in, and your cover email. Second, your collection file: the letter to Coastal Keel’s president and the notice of charging lien.
Part 6: Share Chat Link
Include one AI chat link with a 1–2 sentence explanation of what the conversation shows and why you chose to share it.
Suggested AI Prompts
Use these prompts as a starting point, then adjust them to fit your goal. Strong prompting develops through trial, revision, and testing. It’s a foundational skill that grows into more advanced AI work such as context engineering and agent-based workflows.
Write-Down Sparring Partner
Act as a billing partner at a small Florida law firm whose job today is to argue the other side of every write-down decision I make. I will paste the billing terms of our engagement letter with a client, then one prebill entry at a time: the entry, the file note beside it, and my decision (bill it, write it down, or no charge) with my reason. For each entry, make the strongest case for a different decision, using only the engagement terms and the file note I paste, and name the term or fact your case rests on. Do not tell me which decision is right. After I answer, ask me one question that tests whether my reason would satisfy the client reading the invoice. Wait for me to paste the engagement terms.
A model asked to judge your decision tends to agree with it, so this one is assigned the other side, as a devil’s advocate. Holding it to what you paste keeps its arguments tied to the terms instead of to billing rules it might invent.
Client’s Eye Reader
Act as the president of a small marine construction company in Florida who pays legal bills out of operating cash and reads every invoice line by line. You are not a lawyer. I will paste an invoice from your company’s law firm, Temko & Eden, P.A., a Daytona Beach firm named for its late founders, and the cover email that comes with it. Read them as that client would. List each line or sentence that would make you pick up the phone, and say in plain words what you would ask. Then tell me whether the payment instructions make clear how to pay an invoice and how to send a deposit, and what you would do if you were unsure. Do not rewrite the invoice or the email. Wait for me to paste them.
Casting the model as the client who pays the bill is audience simulation, and it surfaces what an insider stops noticing. The ban on rewriting keeps the fixes, and the judgment behind them, yours.
Trust Routing Checker
I am a paralegal routing a client’s card payment at a Florida law firm. I will paste two texts: the conclusion of Florida Bar Ethics Opinion 21-2, and subdivisions (a)(1) and (b) of Rule 5-1.1 of the Rules Regulating The Florida Bar. Then I will paste the payment record and my plan for it. Using only those texts, ask me one question at a time about my plan: which dollars belong to the firm and which to the client, which account each belongs in, and who bears the processing charge. Do not state the answers yourself. When I have answered every question, tell me which parts of my plan the texts support and which they contradict, and quote the sentence that decides each one. If the texts do not answer a question, say so instead of answering from anything else you know. Wait for me to paste the texts.
The model draws out your reasoning one question at a time instead of supplying its own, which is Socratic questioning held to a closed set of sources. Each verdict it reaches must come with the sentence it rests on, so you can check its reading of the rule against the rule itself.
Lien Notice Stress Test
Act as counsel for a party that has received a law firm’s notice of charging lien in a Florida lawsuit and wants to pay a settlement or judgment without the lawyer’s claim attached. I will paste the text of John F. Schutz, P.L. v. Ally Financial Inc., No. 4D2024-2838 (Fla. 4th DCA Mar. 25, 2026), and then my draft notice. Using only the opinion and the passages it quotes from other cases, list every way my notice falls short of what the court said a notice needs to reach the money, and quote the sentence of the opinion each objection rests on. Then tell me what the opinion leaves open, so I can check those points in Daniel Mones, P.A. v. Smith and Dowda & Fields, P.A. v. Cobb myself. Do not rewrite my notice. Wait for me to paste the opinion.
Opposing counsel looks for the gap, so putting the model in that seat over a pasted opinion is red-teaming with the source in hand. Tying each objection to a quoted sentence gives you something to verify, since a model can describe a holding the court never made.