Co-Broker Commission Agreements: What to Put in Writing
A co-broker commission agreement is a written contract between two brokerages that records who pays whom, how much, when, and under what conditions on a single transaction. Since August 17, 2024, it has stopped being a nice-to-have. MLS Participants can no longer communicate offers of compensation through the MLS, so the deal between listing and buyer brokerages has to live somewhere else. That somewhere is a broker-to-broker agreement, and the payment that follows needs a paper trail as clean as the agreement itself.
This guide is written for brokerage owners and managing brokers. It covers what the agreement must contain, how it connects to the buyer-broker agreement, how co-op commission invoices and letters fit in, and where RESPA turns a routine split into federal exposure.
TL;DR
- A co-broker agreement is a bilateral contract between brokerages, separate from the purchase contract and from the buyer-broker agreement.
- Since August 17, 2024, compensation offers cannot be posted on the MLS, so the written agreement (or another off-MLS channel) is where terms are recorded.
- The RESPA cooperative brokerage exemption covers fee divisions between brokers for real brokerage services. It does not cover referral swaps for title, mortgage or other settlement services.
- A signed agreement is the main evidence if a commission dispute reaches arbitration.
- Pay co-op commissions through brokerage-controlled accounts with an approval trail, never through peer-to-peer apps.
Table of Contents
- What a co-broker commission agreement is
- Why the 2024 changes made it essential
- What to include in the agreement
- Co-op commission letters and invoices
- Where RESPA draws the line
- When commission disputes reach arbitration
- How to pay a co-op commission without creating a problem
- Our perspective
- Where BrokerPay fits
- FAQ
- Sources
What a co-broker commission agreement is
Two brokerages are involved in a sale. One represents the seller, the other represents the buyer. The co-broker agreement, sometimes called a broker-to-broker agreement, a co-brokerage agreement or a compensation agreement between brokers, records the commission arrangement between those two firms.
It is easy to confuse with other documents, so separate them:
| Document | Between whom | What it settles |
|---|---|---|
| Listing agreement | Seller and listing broker | What the seller agrees to pay for services |
| Buyer-broker agreement | Buyer and buyer’s broker | What the buyer’s broker will be paid, and by whom |
| Purchase contract | Buyer and seller | Price and terms of the sale |
| Co-broker (broker-to-broker) agreement | Listing brokerage and buyer’s brokerage | The compensation one firm will pay the other |
The purchase contract may mention commission, but that does not make the buyer’s broker a party to it. The co-broker agreement is an independent contract between the firms. That matters most when something goes wrong.
Why the 2024 changes made it essential
Before the settlement practice changes, a listing broker typically posted an offer of cooperation and compensation in the MLS. Buyer brokers relied on that field. NAR’s guidance on broker-to-broker agreements says the compensation fields are eliminated on MLSs that adopted the changes, and that offers of compensation remain allowed off-MLS when the consumer and broker agree.
Three rules shape what your agreement has to do now:
- A written buyer agreement comes first. Buyer brokers must have a written agreement with the buyer before touring a home, and it must state the compensation as an amount or rate that is objectively ascertainable. A flat figure or a percentage works. A range does not.
- No more than was agreed. Under the same guidance, a broker cannot accept compensation from any source that exceeds what the buyer-broker agreement provides.
- Seller consent matters. NAR’s broker-to-broker guidance notes that before a broker makes an offer of compensation or a payment to a buyer’s representative, the seller must have consented.
Your co-broker agreement does not dictate the terms of the buyer-broker agreement. What it does is memorialize the deal between the two firms, so each side can show that the listing broker had the seller’s authority and the buyer’s broker stayed within the limits of the client’s agreement.
If you are weighing how to communicate offers now that the MLS field is gone, channels and agreements for communicating compensation off the MLS are worth reviewing alongside your own forms.
What to include in the agreement
The free templates that rank for this topic, including the NYS MLS co-brokerage form, tend to be short. Short is fine, but gaps are expensive. Check your form for these items.
Parties and property
Name both brokerages exactly as licensed, with license numbers and addresses. Identify the property and, where known, the agents handling the file. If the buyer’s brokerage is not a licensed brokerage, stop: the payment may fall outside the RESPA exemption (more on that below).
The compensation term
State the amount as a fixed dollar figure or a percentage of a defined base, such as the gross sale price. Say whether it is a flat fee or a percentage of the listing broker’s commission, since the two produce different numbers when the commission is negotiated down. Avoid ranges. The buyer-broker agreement has to be objectively ascertainable, and your firm-to-firm agreement should not contradict it.
Conditions of payment
Spell out when compensation is earned: at closing, on recording, or on funding. State what happens if the deal fails, if the seller concedes part of the commission, or if the buyer’s broker’s client terminates their agreement.
Payment mechanics
Say who pays, to whom, by what method and by what deadline. Include what happens if escrow disbursement is not available, for example in a closing where the title company cannot split the commission. Name the payee’s W-9 requirement so you can issue the right tax form.
Procuring cause and disputes
If your market treats procuring cause as a live issue, define how the firms will handle a competing claim. Add a dispute clause: mediation first, then arbitration through the local association or MLS process where both firms are members, or another forum you name.
Authority and signatures
Both firms sign through someone with authority to bind the brokerage, typically the principal or managing broker. Date it before the buyer’s offer is delivered, or with it, so the terms are fixed before negotiation begins.
Co-op commission letters and invoices
Readers often ask about a co-op commission letter or invoice. These are not the same as the agreement.
- The agreement sets the terms before the deal closes.
- A co-op commission letter is a short instruction, often addressed to the title or escrow company, directing how commission should be disbursed. It should reference the agreement.
- A co-op commission invoice (the co-broke invoice) is the cooperating brokerage’s request for payment after closing. It should carry the property address, closing date, the agreed amount, and the payee’s brokerage name and tax details.
The invoice should match the agreement line for line. If the amount on the invoice differs from the agreement, hold payment and reconcile it before anything goes out. A matching trio of agreement, letter and invoice is what a manager, an auditor or an arbitration panel will want to see.
Where RESPA draws the line
Most co-broke payments are safe. Trouble starts when brokerages stretch the exemption.
RESPA’s anti-kickback rule, 12 C.F.R. § 1024.14, bars giving or accepting a fee or thing of value in exchange for referring settlement service business. A bona fide fee division between cooperating brokers for real estate brokerage services is carved out. Payments must still bear a reasonable relationship to the value of the services provided.
In practice, keep these distinctions clear:
- Broker to broker, for a real transaction: covered by the cooperative brokerage exemption.
- Payment to someone who is not a licensed brokerage: the exemption does not apply.
- Referral fees for steering mortgage, title or similar settlement services: prohibited, and the co-brokerage label does not change that.
- Ongoing referral networks dressed up as co-brokering: the exemption was designed to let brokers work together on one transaction, not to create standing referral arrangements.
The CFPB has pursued this area. Its complaint against a large online brokerage describes referral fees calculated as a percentage of the agent’s commission, which shows how seriously regulators examine fees tied to commission amounts rather than to services performed.
This is a compliance question, so involve your real estate attorney for any arrangement that does not look like a plain broker-to-broker split on a single sale.
When commission disputes reach arbitration
Disputes between brokers over compensation are the point at which the agreement earns its keep. Under Article 17 of the NAR Code of Ethics, disputes between REALTORS® over compensation are arbitrable, and the NAR arbitration guidelines emphasize how common cooperative transactions are and why documentation matters. A signed written agreement is the clearest evidence of what both firms agreed.
A few practical points:
- The co-broker agreement is a contract between the cooperating firms. A dispute strictly between them is not automatically a dispute with the listing side of the purchase contract.
- Clear terms on procuring cause reduce the chance that two firms each believe they earned the same fee.
- Evidence of payment instructions, approvals and amounts paid will matter as much as the agreement itself.
If a disagreement is heading toward a lawsuit rather than association arbitration, an overview of analyzing and litigating real estate disputes can help you frame the questions to put to counsel.
How to pay a co-op commission without creating a problem
An agreement does not help if the payment is sloppy. A workable process looks like this:
- Collect the signed agreement and the buyer-broker agreement before the offer is submitted, and file both with the transaction.
- Confirm the payee is a licensed brokerage and collect a W-9.
- Receive the co-op invoice and check it against the agreement.
- Approve the payment through a manager, with the approval recorded.
- Pay from a brokerage-controlled account, ideally by ACH, and keep the confirmation with the file.
- Report the payment correctly at year end. The IRS explains that businesses must provide Form 1099-MISC for qualifying payments to independent contractors above its threshold, and you should check the current threshold with your tax adviser.
What you do not do is send the money through Venmo, Zelle or another peer-to-peer app from an agent’s personal account. There is no approval trail, no reliable link to the agreement, and no clean record for an auditor. The same gap hurts your agent classification. To defend independent contractor status, you want written agreements and commission-based pay, which an informal app payment does not document. For related examples, see our write-up on compliant co-op payment workflows and why commission tracking prevents tax issues.
Our perspective
We see the same pattern in brokerages again and again: the agreement is fine, and the payment is the weak link. A managing broker negotiates good terms, gets a signed form, and then a co-op commission is settled with a quick transfer from whoever is closest to the money. The paperwork says one thing and the bank record says another.
We think of every co-op commission as three records that have to agree: what was promised, what was approved, and what was paid. If any one lives in someone’s text messages or personal payment app, the brokerage cannot prove the other two. That is why we built BrokerPay around brokerage-controlled accounts, approval workflows and audit trails rather than around speed alone.
Our advice to an independent brokerage owner is simple. Standardize one co-broker agreement form with your attorney. Require the invoice to reference it. Route every payment through one controlled process. You do not need a large compliance department for this, only a process that does not depend on anyone’s memory.
— Wes
Where BrokerPay fits
BrokerPay is a compliance-focused commission payment platform for brokerages. It tracks and processes agent splits, referral fees and co-op commissions, with approval workflows, ACH transfers and full audit trails, and every payment routes through brokerage-controlled accounts. Pricing is a flat monthly subscription tiered by agent count, with no per-transaction software fees, and we offer a 30-day refund guarantee.
If you want your co-op payments to match your co-broker agreements without Venmo workarounds, see the Starter, Growth and Enterprise plans. If you are still moving from spreadsheets and manual transfers, our guide on switching from manual to automated payouts walks through the transition.
FAQ
Is a co-broker agreement required for every transaction?
No law requires one for every deal, but the post-settlement rules removed the MLS as the place to communicate compensation offers. NAR describes broker-to-broker agreements as the way to memorialize the terms between firms. Without one, you rely on memory and email if a dispute arises.
Is a co-broker agreement the same as a buyer-broker agreement?
No. The buyer-broker agreement is between the buyer and their broker and must state compensation clearly before touring homes. The co-broker agreement is between the two brokerages and records the payment one firm makes to the other.
Can I pay a referral fee under the co-brokerage exemption?
Only if it is a genuine fee division between brokers for brokerage services on a transaction. The exemption does not cover payments for referring settlement services such as title or mortgage business. Ask your attorney before paying any fee that does not fit a standard broker-to-broker split.
What should a co-op commission invoice include?
Include the property address, closing date, the agreed amount, the payee brokerage’s legal name and tax details, and a reference to the signed agreement. Check it against the agreement before approving payment.