Table of Contents
- Real Estate Agent Commission Structure Explained: The Basics
- How Real Estate Commission Is Calculated
- Percentage, Tiered, and Flat Fee Models Compared
- How to Negotiate Real Estate Agent Commission
- What to Check in a Real Estate Agency Agreement
- What Commission Really Covers: Marketing, Splits, and Extra Fees
- Conclusion: Choosing a Commission Structure That Works for You
- Frequently Asked Questions
Last Updated: October 9, 2026
Real Estate Agent Commission Structure Explained: The Basics
A real estate agent commission structure is how an agent gets paid for selling a property, usually a percentage of the sale price or, increasingly, one fixed fee. This guide explains commission structure properly: how it’s calculated, the percentage, tiered and flat fee models, how to negotiate, and what to check before signing.
Most sellers focus on the headline rate. The real money hides in the structure around it.
Who Pays Commission and When
The seller pays the commission, deducted from sale proceeds at settlement rather than out of the buyer’s pocket.
Your conveyancer or solicitor deducts the fee from funds released on settlement day.
Timing catches people out. Some agency agreements allow a commission claim if a buyer the agent introduced buys the property within a set period after the agreement ends. Read that clause carefully.
How Real Estate Commission Is Calculated
Commission is calculated by applying the agreed rate to the final sale price, then adding GST.
The rate isn’t set by law. It’s a commercial term between seller and agent, so two neighbours on the same street can pay very different amounts for the same result.
Here’s what most sellers miss: the rate applies to the final price, not the asking price.
That single difference is why the model you choose matters more than the rate you negotiate.
Real Estate Authority guidance for sellers on agency agreements
Worked Example: A Property Sale at $650,000
Let’s put real numbers on the table, because percentages hide their true cost.
Under a percentage model, the cost to the seller is a certain amount plus GST. Under a tiered structure, the same sale costs a different amount plus GST on the first portion, plus an additional amount plus GST on the balance.
| Model | How It’s Charged | On a $650,000 Sale | Seller Keeps |
|---|---|---|---|
| Percentage | Agreed rate on full sale price | Rate × $650,000 + GST | Sale price minus commission |
| Tiered | Higher rate on first portion, lower on balance | First portion + balance + GST | Sale price minus commission |
| Flat fee | One set amount, regardless of price | Fixed amount + GST | Sale price minus fixed fee |
The tiered model rewards higher sale prices because the marginal rate drops. The flat fee rewards certainty. Which suits you depends on your property and risk appetite.
Percentage, Tiered, and Flat Fee Models Compared
Percentage commission is simple and aligns the agent’s incentive with yours, since a higher sale price means a higher fee. It’s also the most expensive option on a strong sale.
Tiered structures split the difference: a higher rate on the first slice of the sale price, a lower rate above it.
Flat fee models charge one set amount regardless of the final price.
The model matters more than the rate. A percentage can cost more than a flat fee on a strong sale, and a flat fee can cost more than a percentage on a weak one.
Tiered Real Estate Commission Structure
A tiered real estate commission structure charges a higher rate on the first portion of the sale price and a lower rate on the balance.
The catch is complexity. Tiered agreements are harder to compare side by side, and the “first portion” threshold varies by agency. Always ask for a written estimate showing total commission at your expected sale price, not just the rates.
How to Negotiate Real Estate Agent Commission
Commission is negotiable, and any agent who says otherwise is telling you something useful about how they work.
Start by asking for a written estimate of total commission at three price points: conservative, expected, and optimistic.
Then negotiate the things that actually cost you money:
- The commission rate or flat fee amount
- The marketing budget and who pays for what
- The length of the exclusive agency period
- The notice period if you want out
What most sellers don’t realise is that a lower rate from a weaker negotiator often costs more than a higher rate from a strong one.
Questions to Ask Before You Agree on a Rate
A short, sharp list of questions does more for your bottom line than a long negotiation. Ask these before you sign:
- What is the total commission at my expected sale price, including GST?
- Is the rate applied to the full sale price, or is it tiered?
- What exactly is included in the marketing budget, and what sits outside it?
- How long is the exclusive agency period, and what is the notice period?
- Is there a clause allowing commission if a buyer introduced during the term buys later?
If any answer is vague, ask for it in writing. A written estimate is the only fair way to compare two agents, because a headline rate hides the structure around it.
Terms to Compare Side by Side
When you have two or three written estimates, compare them on the same page. The rate is only one line; the others are the marketing budget, agreement term, cancellation conditions, and commission-sharing clause.
A common pattern is that a lower headline rate comes with a thinner marketing budget, a longer exclusive term, or a wider commission-claim window after the agreement ends.
Signing a long exclusive agency period before you’ve agreed the marketing plan locks you in with no use. Keep the term short enough that the agent has to earn the renewal.
A Practical Agreement-Review Checklist
Before you sign, walk through this checklist with the agent. It turns a vague conversation into a clear record of what you’re agreeing to.
- Is the commission stated as a percentage, a tiered scale, or a flat fee?
- Is GST shown separately or included in the headline figure?
- What exactly does the marketing budget cover, and who owns the photos and signage afterwards?
- How long is the exclusive agency period, and what’s the notice period?
- Is there a clause allowing commission if a buyer introduced during the term buys later?
- What happens if you cancel, and are there any cancellation fees?
If you want a second opinion on the agreement before signing, our post on what to check in an agency agreement | /agency-agreement-checklist walks through the clauses that matter most. The Real Estate Authority’s guidance on agency agreements also sets out what sellers are entitled to expect.
Negotiation isn’t about squeezing the rate. It’s about matching the structure to your property, your risk appetite, and the result you want. Get that right and the rate takes care of itself.
What to Check in a Real Estate Agency Agreement
Before signing anything, check the commission clause, the term, the marketing costs, and the cancellation conditions. These four items decide what you actually pay and how easily you can walk away.
Work through this checklist before you sign:
- Is the commission stated as a percentage, a tiered scale, or a flat fee?
- Is GST shown separately or included in the headline figure?
- What exactly does the marketing budget cover, and who owns the photos and signage afterwards?
- How long is the exclusive agency period, and what’s the notice period?
- Is there a clause allowing commission if a buyer introduced during the term buys later?
- What happens if you cancel, and are there any cancellation fees?
If any of those answers are vague, get them in writing before you sign. The Real Estate Authority’s guidance on agency agreements sets out what sellers are entitled to expect.
What Commission Really Covers: Marketing, Splits, and Extra Fees
Commission covers the agent’s time, the marketing campaign, and the agency’s operating costs, then gets split between the agent and the brokerage. Understanding that split explains why some agents push hard on price and others don’t.
A portion of every commission goes to the agency, a portion to the salesperson. That’s why a lower headline rate sometimes means a thinner marketing budget, since the agency still needs its cut.
How Commission Is Split Between Agents and Brokerages
When a property sells, the commission isn’t one person’s pay. It’s divided between the listing agency and, if another agency introduces the buyer, the buyer-side agency.
The figure on your agreement is the gross commission, not what the agent takes home.
That distinction matters when you compare agents. A low headline rate can mean a thinner marketing budget, because the agency still needs its share.
Costs That Sit Outside Commission
Watch for costs outside commission: professional photography, floor plans, signage, advertising placements and auctioneer fees. Some agencies bundle these in; others charge separately. Ask which applies to you.
The marketing budget is often quoted as a range, with the final figure agreed once the campaign plan is set. Get that figure in writing before you sign, and confirm who owns the photos and signage afterwards.
Comparing the Full Cost of Selling
Commission is only one line in the cost of selling.
| Cost Item | What to Check | Why It Matters |
|---|---|---|
| Commission | Rate, model, GST treatment | The largest single cost for most sellers |
| Marketing | What’s included, who owns assets | Can vary widely between agencies |
| Administration | Any fixed fees or charges | Often overlooked until settlement |
| Auction | Auctioneer fees, if applicable | Only relevant for auction campaigns |
Run that comparison at your conservative, expected, and optimistic price points. The agent who looks cheapest at the headline rate isn’t always the one who leaves you with the most money.
Big Mike’s flat fee of $12,500 plus GST is designed to remove that ambiguity, with the marketing approach discussed upfront rather than discovered later.
Consumer Protection guidance on real estate transactions
Conclusion: Choosing a Commission Structure That Works for You
The right commission structure leaves you with the most money after the sale, not the lowest headline rate. Run the numbers at three price points, read the agreement clause by clause, and negotiate the terms that actually move your bottom line. Big Mike brings 38 years of Mid-Canterbury experience, Arizto’s technology platform, and a transparent flat fee of $12,500 plus GST to every appraisal, so sellers know their costs before the campaign starts.
Frequently Asked Questions
How is real estate agent commission calculated?
Commission is usually a percentage of the property sale price, agreed in writing before the property is listed. On a sale at a certain percentage plus GST, the commission works out to a specific amount plus GST, deducted from the sale proceeds at settlement. Some agents instead charge a tiered scale, where the first portion of the sale price attracts one rate and the balance a lower rate.
Can you negotiate a real estate agent’s commission?
Yes. Commission is negotiable under the Real Estate Agents Act 2008, and the agreed rate must be recorded in the agency agreement before you sign. Ask what the fee includes, whether marketing costs sit inside or outside it, and how the rate compares with other written estimates you have received. A flat fee model is one alternative worth weighing against a percentage.
What is the difference between a tiered commission and a flat fee?
A tiered commission pays the agent a higher percentage on the first portion of the sale price and a lower percentage on the balance, so the total fee scales with the result. A flat fee is a single fixed amount regardless of sale price, which makes your costs predictable and can leave more of the sale proceeds in your pocket on higher-value properties.
What should I check in an agency agreement before signing?
Check the commission rate and how it is calculated, whether GST is included, the marketing costs and who pays them, the length of the listing period, and the notice required to cancel. Confirm whether the agreement is exclusive or sole agency, and what happens if you sell to a buyer introduced during the term. Ask for everything in writing before you commit.
Who pays the real estate agent’s commission?
The seller pays. The commission is deducted from the sale proceeds at settlement, so it comes out of the money you receive rather than being invoiced separately. Buyers do not pay commission directly, although the cost is reflected in the overall price negotiations. This is why the rate and structure agreed in the agency agreement matter so much to your final return.
What happens if my agency agreement expires or I want to cancel?
Agency agreements run for a set term, often 90 days, and roll over unless either party gives notice. If you cancel early, check whether the agreement still entitles the agent to commission on buyers they introduced during the term. Understanding the cancellation and expiry clauses before you sign avoids disputes later, especially if you switch agents or sell privately.