Guides › Updated 2026-10-31
Real Estate Commission Math: Worked Examples for the Exam
TL;DR: Commission = price x rate. Work backwards by dividing. For a target net, divide by (1 - rate), never multiply by (1 + rate). For splits, find the total, then the side, then the agent’s cut. Every example below has been checked by calculation.
The core formulas
| Goal | Formula |
|---|---|
| Commission | Sale price x Rate |
| Sale price | Commission / Rate |
| Rate | Commission / Sale price |
| Seller’s net | Price - Commission - Loan payoff - Other costs |
| Price needed for a target net | (Net + other costs + payoff) / (1 - Rate) |
Convert percent to decimal first: 5.5% = 0.055, 3.5% = 0.035.
Example 1: Basic commission
A home sells for $425,000 and the listing agreement calls for a 5.5% commission.
$425,000 x 0.055 = $23,375
Example 2: Finding the rate
A $260,000 home sold, and the brokerage received $9,100 in total commission.
$9,100 / $260,000 = 0.035 = 3.5%
A quick sanity check: 1% of $260,000 is $2,600, and $9,100 is 3.5 times $2,600.
Example 3: Finding the sale price
A broker earned $14,400 at 6%.
$14,400 / 0.06 = $240,000
The check is easy: $240,000 x 0.06 = $14,400.
Example 4: Split between brokerages and agent
A home sells for $310,000 with a 6% total commission. The commission is split equally between the listing brokerage and the selling brokerage. The listing brokerage pays its agent 70% of its share.
- Total commission: $310,000 x 0.06 = $18,600
- Listing side (50%): $18,600 / 2 = $9,300
- Agent (70%): $9,300 x 0.70 = $6,510
- Brokerage keeps 30%: $9,300 x 0.30 = $2,790
Check: $6,510 + $2,790 = $9,300. A common wrong answer takes 70% of the total ($13,020). Read which share the split applies to.
Example 5: Net to the seller
The home sells for $410,000. The seller pays a 6% commission, a $212,500 mortgage payoff and $6,150 in other costs.
- Commission: $410,000 x 0.06 = $24,600
- Net: $410,000 - $24,600 - $212,500 - $6,150 = $166,750
Example 6: List price for a target net
A seller wants to net exactly $282,000 after a 6% commission, with no other costs.
The seller keeps 94% of the price, so: $282,000 / 0.94 = $300,000
Check: $300,000 x 0.94 = $282,000. The tempting wrong answer is $282,000 x 1.06 = $298,920, which falls short because 6% is taken from the larger price, not from $282,000.
A harder version with other costs
A seller must pay off $135,000, expects $5,000 in other costs, wants to walk away with $95,000, and will pay a 6% commission. What price is needed?
($95,000 + $135,000 + $5,000) / 0.94 = $235,000 / 0.94 = $250,000
Check: $250,000 x 0.94 = $235,000; minus $135,000 and $5,000 leaves $95,000.
Example 7: Graduated commission and leases
Some agreements pay a higher rate on the first part of the price. Suppose 7% on the first $100,000 and 3% on the rest of a $340,000 sale:
- 7% of $100,000 = $7,000
- 3% of $240,000 = $7,200
- Total = $14,200
For leases, commissions are often a percent of total rent over the term. A three-year lease at $2,000 per month with a 5% commission: $2,000 x 36 = $72,000; x 0.05 = $3,600.
Common traps
- Using the wrong base. Percent of price versus percent of the commission.
- Splitting too early. Decide whether the question asks for total, side, or agent share.
- Forgetting a cost. Net proceeds subtract payoff and closing costs as well as commission.
- Adding 6% instead of dividing by 0.94. The most common target-net error.
For a refresher on every other formula, see the math cheat sheet and the formulas reference. If your problem involves splitting closing costs between buyer and seller, our prorations guide walks through it.
Practice
Do at least five commission problems a day until the steps are automatic. Try the free quiz for your state, such as Texas, Florida, California or New York, or use the GablePrep app for step-by-step solutions.
GablePrep is an independent study resource, not affiliated with any state real estate commission or testing provider. We are not a pre-licensing course and this is not legal advice. Commission rates and splits are negotiated; confirm your state’s rules in its handbook.
Frequently asked questions
How do you calculate a real estate commission?
Multiply the sale price by the commission rate as a decimal. For example, $425,000 x 0.055 = $23,375. Commission rates are negotiable between the parties, so exams give you the rate rather than expecting you to know one.
How do you find the price a seller needs to net a certain amount?
Divide the desired net by one minus the commission rate. To net $282,000 with a 6% commission and no other costs, divide $282,000 by 0.94 to get $300,000. Do not multiply by 1.06.
How is a commission split between brokers and agents calculated?
First find the total commission, then apply the side split (often 50/50 between listing and selling brokerages, unless the problem says otherwise), then apply the agent's percentage of the brokerage's share.
Are commission rates set by law?
No. Commission amounts are negotiated between the parties. Be careful with any exam wording that implies a rate is fixed. Your state's handbook or course covers any rules about commission agreements.
Independent exam prep. Not affiliated with any state real estate commission or testing provider. Not an approved pre-licensing course. Not legal advice. Facts verified on 2026-10-31; always confirm with your state’s official handbook.