Key Takeaways:
• Joint representation of couples is standard practice in estate planning—the ACTEC Commentaries confirm that spouses are often better served by joint representation, but proper billing documentation and written consent are essential to stay compliant with ABA Model Rules 1.6, 1.7, and 1.9
• Single-invoice billing to couples is ethically permissible when both spouses have provided informed consent and understand that all billing information will be shared—this approach eliminates collection complexity while maintaining transparency about legal fees
• Your engagement letter is your first line of defense—clearly document who the clients are, how fees will be divided or shared, what triggers separate billing, and how confidential information will (or won’t) be handled between spouses
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Picture this: A couple in their early 50s walks into your office seeking a comprehensive estate plan. They want coordinated wills, powers of attorney, and possibly a revocable trust. Simple enough, right? But when it comes time to send the invoice, questions arise. Do you bill them jointly or separately? Whose name goes on the invoice? What happens if one spouse wants to see the other’s file? And what if they divorce mid-engagement?
If these scenarios make you pause, you’re not alone. Estate planning attorneys handle more joint representations than almost any other practice area, yet billing for these engagements remains one of the least-discussed topics in legal ethics. According to the Trust & Will 2025 Estate Planning Report, 83% of Americans recognize the importance of estate planning, yet only 31% have a will. With the estate lawyers and attorneys industry reaching $18.2 billion in 2025 according to IBISWorld, mid-sized firms have tremendous opportunity to capture market share—but only if they handle joint representation billing correctly.
The financial stakes are significant: more than 8 in 10 clients who hire lawyers for estate planning documents pay a flat fee, making billing structure and documentation critical from the very first client meeting. Get it wrong, and you risk not only client complaints but potential bar discipline for ethical violations.
Understanding Joint Representation in Estate Planning
Joint representation occurs when a single lawyer or law firm represents two or more clients in the same matter with aligned interests. In estate planning, this most commonly involves representing spouses who want coordinated estate plans. The New York City Bar Association’s Formal Opinion 2017-7 specifically identifies “representation of spouses in estate planning” as a classic example of joint representation.
Why Couples Prefer Joint Representation
The American College of Trust and Estate Counsel (ACTEC) Commentaries note that couples are often better served by joint representation for several reasons:
Cost efficiency: Shared consultations, coordinated document drafting, and combined review sessions reduce overall legal fees. When both spouses work with the same attorney, they avoid duplicating the fact-gathering process.
Coordinated planning: Estate plans work best when they work together. Joint representation ensures that one spouse’s will doesn’t inadvertently conflict with the other’s trust provisions.
Transparency: Most couples want to plan together and have no secrets regarding their estate plans. Joint representation facilitates open communication about sensitive topics like beneficiary designations and fiduciary appointments.
Relationship continuity: Having one attorney who understands the couple’s complete estate planning picture simplifies future updates and administration.
When Joint Representation Gets Complicated
Not every couple is a candidate for joint representation. The North Carolina State Bar has ruled that a lawyer who jointly represented a husband and wife in estate planning may not prepare a codicil to the will of one spouse without the knowledge of the other if it adversely affects the other spouse’s interests. This highlights a critical truth: joint representation requires ongoing vigilance for emerging conflicts.
Red flags that may require separate representation include:
• Blended families with significantly different estate planning goals for children from prior marriages
• Substantial separate property or significant income disparities
• History of marital discord or discussions about potential divorce
• One spouse expressing private concerns about the other’s influence
• Either party asking to keep certain information confidential from the other spouse
The Ethical Framework for Joint Representation Billing
Before addressing billing specifics, it’s essential to understand the ethical rules governing joint representation. Three ABA Model Rules create the foundation:
ABA Model Rule 1.6: Confidentiality of Information
Confidentiality rules apply differently in joint representation. In a true joint representation, there are generally no secrets between the co-clients—information from one spouse is typically shared with the other. The ABA has clarified that a lawyer has an equal duty of loyalty to each jointly represented client, and each client has the right to be informed of anything bearing on the representation that might affect that client’s interests.
Billing implication: When you send a joint invoice, you’re not violating confidentiality because both clients have agreed that billing information—including detailed time entries—can be shared between them. This must be explicitly addressed in your engagement letter.
ABA Model Rule 1.7: Conflict of Interest—Current Clients
Rule 1.7 prohibits representation where there’s a significant risk that representation of one client will be materially limited by responsibilities to another client. However, this doesn’t mean all joint representation is prohibited. The D.C. Bar’s ethics rules note that joint representation is commonly provided to parties in estate planning for family members and other circumstances where clients might be nominally adverse but have retained a lawyer to accomplish a common purpose.
Billing implication: Your fee structure should not create incentives that favor one spouse over the other. A joint flat fee eliminates concerns about unequal time allocation affecting one client’s interests.
ABA Model Rule 1.5: Fees
This rule requires that fees be reasonable and communicated to the client before or within a reasonable time after commencing representation. For joint representations, this means both clients must understand and agree to the fee arrangement.
Billing implication: Both spouses must sign the engagement letter acknowledging the fee arrangement. Whether billing jointly or allocating fees, transparency is paramount.
Billing Approaches for Joint Representation
Mid-sized estate planning firms typically use one of three billing approaches for couples. Each has advantages and potential pitfalls.
Approach 1: Single Joint Invoice
This is the most common approach for estate planning representations. You create one matter with both spouses listed as clients and send a single invoice addressed to both.
Advantages:
• Simplifies billing administration and reduces overhead
• Reflects the unified nature of the representation
• Easier for couples who share finances
• Reduces potential disputes about who owes what
Considerations:
• Both clients must consent to receiving shared billing information
• Creates joint and several liability for the fee (both are responsible for the full amount)
• Must determine who receives collection communications if payment lapses
Best practice: Your engagement letter should specify that invoices will be sent to both spouses at a designated email address and that both are jointly and severally liable for payment.
Approach 2: Proportional Allocation
Some firms allocate fees between spouses based on the relative complexity of each spouse’s documents or the time spent on each client’s specific issues.
When this makes sense:
• One spouse has significantly more complex planning needs
• Separate finances or prenuptial agreements dictate separate payment
• Business ownership creates tax deduction opportunities for one spouse
Challenges:
• How do you allocate shared consultation time?
• Research benefiting both spouses may be difficult to divide
• Creates administrative complexity without clear benefit
Best practice: If using proportional allocation, document your methodology in the engagement letter and include a provision that shared work will be allocated 50/50 unless otherwise specified.
Approach 3: Flat Fee Package
The most popular approach for estate planning—and increasingly preferred by clients—is a flat fee covering both spouses’ complete estate plans. According to Clio’s Legal Trends Report, firms are billing 34% more of their cases on a flat-fee basis compared to 2016, with estate planning leading this transformation.
Advantages for joint representation:
• Eliminates allocation disputes entirely
• Provides price certainty that couples appreciate
• Removes any perception of favoritism in time allocation
• Simplifies collections (one payment covers both clients)
• Makes value communication easier
Best practice: Create tiered flat-fee packages specifically designed for couples (e.g., “Comprehensive Couples Estate Plan: $3,500”). Your engagement letter should clearly define what’s included, what falls outside the scope, and how additional work will be priced.
Invoice Setup Best Practices for Joint Clients
How you structure your invoices for joint representation matters significantly for both compliance and collection efficiency. Here’s how to set up your billing systems correctly:
Client and Matter Setup
Your practice management and billing software should allow you to create a single matter with multiple clients. Both spouses should be listed as active clients on the matter, ensuring that:
• Both names appear on all invoices and correspondence
• Either spouse can access matter information (consistent with your confidentiality agreement)
• Both email addresses receive invoice notifications
Time Entry Descriptions
Even with flat fee billing, track your time internally for profitability analysis. When billing hourly, your time descriptions should clearly indicate whose work is being performed:
Good: “Draft revocable living trust provisions for H. Smith including marital trust and family trust provisions; review beneficiary designations for retirement accounts”
Avoid: “Work on Smith estate plan” (too vague; doesn’t indicate which spouse)
Invoice Format for Joint Clients
Your invoice header should clearly identify both clients:
Invoice addressed to: John Smith and Jane Smith
Matter: Smith Family Estate Plan
Re: Joint Estate Planning Representation
For flat fee matters, your invoice should include a clear description of the services covered:
“Comprehensive Couples Estate Plan Package:
— Revocable living trusts (2)
— Pour-over wills (2)
— Financial powers of attorney (2)
— Healthcare directives (2)
— HIPAA authorizations (2)
— Execution ceremony coordination”
Documenting Joint Representation in Your Engagement Letter
Your engagement letter is your first line of defense against billing disputes and ethics complaints. The ACTEC Engagement Letters guide provides sample language specifically for joint representation of spouses, and savvy estate planning lawyers advise that proper documentation significantly improves the chances of smooth representation.
Essential Provisions for Joint Representation
1. Identification of All Clients
Explicitly state that you are representing both spouses jointly in connection with their estate planning. Both names should appear in the opening paragraph, and both must sign the engagement letter.
2. Scope of Representation
Define the scope as narrowly as possible. ACTEC guidance suggests this makes good business sense because it’s easier to define when the representation ends. Sample language: “This representation is limited to the preparation of estate planning documents as described in Exhibit A. It does not include tax return preparation, business succession planning, or representation in any litigation or dispute.”
3. Confidentiality Agreement
Address how confidential information will be handled between the spouses. Most joint representations use a “no secrets” approach: “By signing this letter, you each agree that any information provided by either of you to this firm may be shared with the other spouse. We will not keep confidences between you during this joint representation.”
4. Conflict Disclosure and Waiver
Even when no actual conflict exists, best practice is to obtain informed consent to joint representation. Explain the potential for conflicts to arise and what will happen if they do: “If a conflict of interest develops between you that we cannot resolve, we may need to withdraw from representing both of you, and you would each need to retain separate counsel.”
5. Fee Arrangement and Billing
This is where billing specifics must be crystal clear. Include:
• The total fee or billing rate(s) applicable to the representation
• Whether billing is joint or allocated
• Joint and several liability for payment
• Where invoices will be sent
• Payment terms and accepted payment methods
• What happens if one spouse wants to terminate the representation
Sample Engagement Letter Language for Fee Provisions
For flat fee billing: “Our flat fee for this joint representation is $[X], which covers all services described in Section 2 above. This fee covers estate planning services for both of you and is not allocated between you. You are jointly and severally liable for payment of this fee, meaning we may seek payment of the full amount from either or both of you. The fee is due as follows: 50% upon signing this engagement letter; 50% upon delivery of draft documents for your review.”
For hourly billing: “Our fees for this joint representation will be based on time spent at the following rates: [rates]. Invoices will be sent monthly to both of you at the email addresses provided below. You are jointly and severally liable for all fees incurred, regardless of which spouse’s specific issues required the time. We will not separately allocate time entries between you unless you specifically request and we agree to a different arrangement in writing.”
When Joint Representation Falls Apart: Billing Implications
Even the most harmonious couple can face circumstances that derail joint representation. Understanding how to handle billing when conflicts emerge is essential for protecting your firm.
Scenario 1: Conflict Emerges Mid-Engagement
If one spouse reveals information that creates a conflict (e.g., plans for divorce, concerns about the other spouse’s capacity, or undisclosed assets), you may need to withdraw from representing both clients. The ACTEC Commentaries note that if a serious conflict arises between jointly represented clients, the lawyer may be required to withdraw as counsel for one or both.
Billing approach: Your engagement letter should address this scenario: “If we must withdraw due to a conflict of interest, we will bill for services rendered through the date of withdrawal. [For flat fees: A portion of the flat fee will be refunded based on work not yet completed.] You will each be responsible for retaining new counsel to complete your individual estate plans.”
Scenario 2: One Spouse Wants Individual Changes
After the initial estate plan is complete, one spouse contacts you to make changes that would affect the other spouse’s interests. The North Carolina State Bar explicitly addressed this: you cannot prepare a codicil for one spouse without the other’s knowledge if it adversely affects the other spouse or if they had agreed not to make changes without informing each other.
Billing approach: Include this in your engagement letter: “After completion of this joint representation, if either of you wishes to make changes to your estate plan, we will evaluate whether we can assist with those changes consistent with our ethical obligations to both of you. Changes that do not affect the other spouse’s interests may be possible, but changes that could adversely affect the other spouse may require that we decline representation or that you retain separate counsel.”
Scenario 3: Divorce Filing
If clients file for divorce during the engagement, joint representation must terminate immediately. ACTEC Fellow Professor Elizabeth R. Carter notes that representing an unhappily married couple who may be headed for divorce tests estate planners in practical and ethical ways.
Billing approach: “If you initiate divorce or separation proceedings during this representation, we will withdraw from representing both of you immediately. Fees incurred through that date remain due, and you will each need to retain separate counsel for any future estate planning needs.”
Trust Account Considerations for Joint Representation
When clients pay retainers or advance fees, proper trust accounting becomes critical. Estate planning lawyers must maintain impeccable trust records—which can be especially reassuring to prospective clients where significant funds pass through your hands.
Retainer Deposits from Joint Clients
When a couple pays a joint retainer, document clearly in your trust records that the funds belong to both clients. Your ledger should reflect:
• Client name: “John Smith and Jane Smith” (not just one spouse)
• Matter description: “Smith Joint Estate Plan”
• Source of funds: “Joint payment from clients” (or note if one spouse specifically paid)
Refunds to Joint Clients
If representation terminates before the retainer is exhausted, you’ll need to return unused funds. Your engagement letter should address this: “Any refund of unearned fees will be made jointly payable to both clients unless you provide us with written instructions signed by both of you directing otherwise.”
This avoids the awkward situation of deciding which spouse gets the refund check if the engagement ends due to conflict.
Technology Solutions for Joint Representation Billing
Modern legal billing software can significantly streamline joint representation billing. According to industry data, lawyers bill just 2.9 hours (37%) of an 8-hour day on average, with much of the remaining time consumed by administrative tasks. The right technology can recapture some of that lost time.
Key Features to Look For
Multiple client support: Your software should allow multiple clients to be associated with a single matter without requiring workarounds.
Flexible invoice addressing: Generate invoices addressed to “John Smith and Jane Smith” rather than forcing a primary/secondary client hierarchy.
Multiple email delivery: Send invoice notifications to both spouses’ email addresses automatically.
Flat fee management: Handle flat fee billing with ease, including milestone-based payment schedules.
Trust accounting integration: Track retainers and earned fees with proper IOLTA compliance for joint clients.
Implementation Checklist for Joint Representation Billing
Use this checklist to ensure your firm handles joint representation billing correctly:
Before Engagement:
☐ Screen for conflicts between spouses’ interests
☐ Hold separate initial meetings if any concerns arise
☐ Prepare engagement letter with joint representation provisions
☐ Obtain both signatures on engagement letter
Matter Setup:
☐ Create matter with both spouses listed as clients
☐ Record both email addresses for invoice delivery
☐ Set up fee arrangement (flat fee or hourly)
☐ Configure invoice template to show both client names
During Representation:
☐ Track time with clear descriptions indicating whose work
☐ Monitor for emerging conflicts
☐ Share all billing information with both spouses
☐ Send invoices to both email addresses
Collection:
☐ Send payment reminders to both spouses
☐ Accept payment from either spouse
☐ Document any payment allocation arrangements
After Engagement:
☐ Send final invoice to both spouses
☐ Return any unused trust funds jointly
☐ Send closing letter addressed to both clients
☐ Document file retention consistent with joint representation
Conclusion: Getting Joint Representation Billing Right
Joint representation of couples in estate planning is not only ethically permissible—it’s often the best approach for clients and the most efficient for your firm. The key is documentation, transparency, and clear billing practices from the very first client meeting.
Remember these fundamental principles:
• Both spouses must understand and consent to joint representation
• Your engagement letter should address confidentiality, billing, and potential conflicts
• Both clients are jointly and severally liable for fees unless otherwise agreed
• Flat fee billing often simplifies joint representation significantly
• Technology can streamline billing administration while maintaining compliance
With the estate planning market projected to reach $2.43 billion by 2034 and only 24% of Americans currently having a will, the opportunity for mid-sized firms is enormous. By implementing sound joint representation billing practices, you position your firm to capture this growth while maintaining the ethical standards that protect both your clients and your license.
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Frequently Asked Questions
Q: Can I send separate invoices to each spouse even in a joint representation?
A: Yes, but with important caveats. If you allocate fees between spouses, both must understand and agree to the allocation methodology in your engagement letter. Remember that both spouses are entitled to see all billing information in a joint representation, so sending “separate” invoices doesn’t create confidentiality between them. Consider whether the administrative complexity is worth it—most firms find joint billing simpler and equally effective.
Q: What if one spouse refuses to pay their share of the bill?
A: If you’ve properly established joint and several liability in your engagement letter, you can seek payment of the full amount from either spouse. This is why joint and several liability is essential—it prevents clients from playing the “that was my spouse’s portion” card. Your engagement letter should make clear that you may pursue collection from either or both clients for any unpaid balance.
Q: How do I handle billing if the couple divorces after I’ve completed their estate plans?
A: If the work is complete and paid for before the divorce, your obligation is generally satisfied. However, you cannot represent either spouse in modifying their estate plan without carefully evaluating conflict of interest rules. Any unpaid fees at the time of divorce remain jointly owed. Consider sending a letter to both parties confirming matter closure and explaining that future representation will need to be evaluated for conflicts.
Q: Should I have each spouse sign a separate engagement letter?
A: No—for joint representation, use a single engagement letter signed by both spouses. This reinforces that you represent them jointly and that they’ve both agreed to the same terms. The engagement letter should be addressed to both spouses and have signature lines for each. Some firms have both spouses sign the same page; others provide separate signature pages. Either approach works as long as both sign.
Q: Can unmarried couples be jointly represented?
A: Yes, unmarried couples can be jointly represented in estate planning, but additional care is required. The ACTEC guidance notes that the representation of unmarried couples requires a tailored approach, considering the lack of legal ties and potentially divergent financial interests. Your engagement letter should address the unique considerations of unmarried clients, including that they may have fewer automatic legal protections than married couples.
Q: What if one spouse wants to keep something confidential from the other?
A: This is a red flag that joint representation may not be appropriate. If a spouse requests confidentiality from the other spouse, you have several options: (1) decline to accept the confidential information and explain that in joint representation, you cannot keep secrets between clients; (2) terminate the joint representation and advise both spouses to seek separate counsel; or (3) in limited circumstances, you might consider “separate representation” of each spouse with appropriate conflict waivers—but this is complex and many firms avoid it.
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Sources
1. ABA Model Rules of Professional Conduct, Rules 1.5, 1.6, 1.7, 1.9
2. ACTEC Commentaries on the Model Rules of Professional Conduct (6th Edition)
3. ACTEC Engagement Letters: A Guide for Practitioners (3rd Edition, 2017)
4. New York City Bar Association Formal Opinion 2017-7: Disclosures to Joint Clients
5. D.C. Bar Rules of Professional Conduct, Rule 1.7 Commentary
6. North Carolina State Bar, Rules of Professional Conduct, Rule 1.7
7. Interactive Legal: “Stuck in the Middle: The Ethics of Representing Couples in Estate Planning” (2025)
8. ACTEC Foundation Podcast: “Tips for Joint Representation of Spouses” (2023-2024)
9. Trust & Will 2025 Estate Planning Report
10. IBISWorld: Estate Lawyers & Attorneys Industry Report (2025)
11. Clio Legal Trends Report (2024)
12. CEP-DC: Estate Planning Statistics & Facts (2025)
13. American Bar Association: Ethics in Estate Planning Checklist
14. ABA Litigation Journal: “The Ethics of Joint Representation” (2013)
