Real Estate Commission Split With a Broker, and How a Cap Changes It

October 14, 2026 · Pricing a service business

A real estate commission split divides the commission on your side of a deal between you and your brokerage. On an 80/20 split you keep 80% and the broker keeps 20%. A commission cap puts a limit on the broker’s share for the year: once the brokerage has collected the cap amount, you keep 100% of every later deal until the cap year resets. In the illustrative example below, a $385,000 sale at 2.5% on your side earns $9,625. Deals one to eight keep $7,700 each. Deal nine keeps $9,025, and from deal ten on you keep the whole $9,625 - 25% more than deal one, for the same work.

The commission split formula

gross commission (GCI)  = sale price x your side's commission rate

broker's share          = GCI x split, until the cap is used up

you keep                = GCI - broker's share

With a cap, the broker’s share on any one deal is the smaller of two numbers:

broker's share = min(GCI x split, cap - what the broker has taken so far this cap year)

That second line is the whole effect of a cap. Before the cap, every deal is split the same way. In the deal where the cap runs out, the broker takes only what is left of it. After that, the broker takes nothing.

Agreements differ on details this page does not model - transaction fees, fees that keep running after the cap, team splits, referral fees, franchise royalties, and when the cap year starts. Read your own agreement for those.

Worked example: an 80/20 split with a $16,000 cap

These inputs are illustrative, chosen to show the method. Commission rates, splits and caps vary and are negotiable; nothing here is a typical or recommended figure.

One deal. $385,000 x 2.5% = $9,625 of gross commission. The brokerage’s 20% is $1,925, so you keep $7,700.

When the cap lands. $16,000 / $1,925 per deal = 8.31 deals. The cap is not reached on a whole deal - it runs out partway through deal nine.

Here is the year deal by deal:

After deal eight the brokerage has collected $15,400, leaving $600 of the cap. Deal nine pays that $600 instead of the full $1,925, so you keep $9,025. From deal ten on, the brokerage’s share is zero and you keep all $9,625.

The insight: a cap makes your income discontinuous

Without a cap, each deal is worth the same to you. With one, a deal’s value depends on when in the cap year it closes. Deal ten is worth $1,925 more to you than deal one, though the house, the client and the work are identical. Three things follow.

“Deals needed” is not target divided by net per deal. Say you want $80,000 after the split (before expenses and tax). Dividing by the pre-cap $7,700 gives 10.39, so 11 deals. Run the ladder instead and the total passes the target at deal 10 ($80,250). There is no single net per deal to divide by - the division overstates what you need, because it ignores the deals that are worth more.

Timing has a price. If a closing slips past the date your cap resets, it moves from the top of one year’s ladder to the bottom of the next. In the example, that one slip costs $1,925: the gap between a post-cap deal and a pre-cap one. Knowing your cap date belongs in planning, not just in the agreement.

Your effective split falls with volume. Divide what the brokerage took by your total commission for the year:

At 2 deals the effective split is 20.0% - the full headline split. At 24 deals it is 6.9%. The same agreement is a very different deal for a low-volume agent and a high-volume one.

Comparing a capped split with an uncapped one

The last column above is a second illustrative plan: a 90/10 split with no cap, where the brokerage takes $962.50 a deal forever. Which plan costs less depends only on how many deals you close:

• The capped plan’s brokerage take stops growing at $16,000.
• The uncapped plan reaches $16,000 at $16,000 / $962.50 = 16.62 deals.

So up to 16 deals in a cap year the 90/10 no-cap plan costs less, and from 17 deals on the 80/20 capped plan costs less. At 2 deals the no-cap plan saves $1,925; at 24 it costs $7,100 more. Neither plan is better in general. The useful question to ask of any offer is: at the number of deals I can honestly expect, how much does this brokerage take in total? Fixed fees (desk, technology, transaction fees) belong in that total too, and a fixed fee is a larger share of a small year than of a large one.

How to run this on your own numbers

1. Find the split, the cap amount and the cap year start date in your agreement. If any of them is unclear, ask the broker to put it in writing.
2. List the deals you expect this cap year with an estimated price and commission rate for each. They do not need to be equal - the method works deal by deal.
3. For each deal in order: GCI = price x rate. Broker’s share = the smaller of GCI x split and the cap left. Subtract it from the cap left.
4. Add up what you keep. Then subtract fixed fees and expenses before you compare plans or set a goal.

How these were calculated

Each deal’s gross commission is sale price x the commission rate on one side. The brokerage takes the split share of each deal until its total for the cap year reaches the cap; in the deal that crosses the cap it takes only the remainder, and afterward nothing. Every figure on this page was computed twice: once by the code behind the product below, which walks the deals tracking how much cap is left, and once by an independent program that writes the brokerage’s cumulative take after n deals as the smaller of split x total commission and the cap, and gets each deal’s figure from the difference. The two agree to the cent. Dollar amounts are rounded to the nearest dollar for display. All inputs are illustrative, every deal in the example is the same size to keep the arithmetic visible, and none of this is financial, legal or tax advice.

If you would rather plug in your own deals than redo the ladder by hand, the kit below has the deal-by-deal cap workbook, the desk-fee share by volume, and scripts for asking a broker to explain the cap in writing.