Flat Fee vs Percentage Commission Calculator NZ

Quick answer: A percentage commission grows with the sale price. A fixed fee does not. So the fixed fee gets relatively better the higher your property sells for, and the percentage gets relatively better the lower it sells for. The break-even sale price is where the two cost exactly the same. Because most New Zealand tiered agencies also charge a minimum fee of around $11,000 plus GST, a fixed fee set below that minimum is cheaper at every sale price. Enter your expected price below to see both totals including GST and your own break-even point.

This calculator answers the question sellers actually care about when they are weighing up a fixed-fee agency against a traditional percentage agency: at what sale price does each option win. Choose a fixed-fee option, either a published fee structure or the flat fee you have been quoted, then choose the percentage or tiered agency you are comparing it against, or enter a custom rate and minimum fee. Enter your expected sale price and the calculator shows both total costs side by side including 15% GST, which is cheaper, and by how much. It then solves the two fee structures against each other to find the break-even sale price, the point at which the two cost exactly the same, so you learn the rule of thumb for your own situation rather than a generic one. A comparison table from $400,000 to $1,500,000 shows how the gap moves across the price range and makes the crossover visible. Every rate comes from one maintained data file shared with our other commission tools, and each agency carries a source flag so you can see whether a figure is a published rate card, taken from the agency's website, or an indicative placeholder that needs verifying. Commission is quoted exclusive of GST, and marketing is charged separately by both models, so treat these figures as an informed starting point for a negotiation rather than a quote.

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Updated  Current rates and legislation applied.
Verification & Methodology
Rate source: every agency structure on this page is read from one maintained file shared with our Real Estate Commission Calculator and each individual agency page, so the same agency always produces the same figure across the site. Last researched June 2026.
Source flags: published means the agency's own published rate card, site means the agency's website or fee page, and indicative means a typical New Zealand tiered structure used as a placeholder that must be verified. The flag for your current selection is shown next to each dropdown.
GST: percentage commission is quoted exclusive of GST, while some fixed-fee agencies publish GST-inclusive prices. Every structure is held in our rate file on a GST-exclusive basis, converting the published figure where an agency quotes it including GST, and this calculator then adds 15% GST to both sides so the two totals are directly comparable.
Marketing: Marketing and advertising are charged separately and typically range from about $1,000 to $10,000 or more depending on the campaign. It is excluded from every figure on this page, for both models.
Above the top fee band: where a fixed-fee agency publishes bands up to a ceiling and negotiates above it, this calculator reports the fee as negotiated and removes that price from the comparison rather than guessing a number.
Break-even method: solved from the two fee structures, not hardcoded. Both structures are piecewise linear in the sale price, so the calculator collects every breakpoint (tier caps, minimum-fee thresholds and fixed-fee band edges), then solves the linear equation exactly on each segment between breakpoints and checks for a change of winner at each band step.
Negotiability: all real estate commission in New Zealand is negotiable and varies by office, region and property type. Figures here are indicative and are not a quote or financial advice.
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Use a realistic appraisal figure. The comparison changes as the price moves.
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Tall Poppy
$25,495.00
Barfoot & Thompson
$29,670.00

Where the crossover happens

Both totals below include 15% GST. Watch the last column: the point where it changes is your break-even sale price.

Sale price Fixed fee (incl GST) Commission (incl GST) Difference Cheaper on fee

Totals include 15% GST and exclude marketing, which is charged separately by both models. Tall Poppy publishes fees up to $2,499,999 and negotiates above that, so higher rows show no comparison rather than a guessed figure. Rows shaded in yellow are where the cheaper option changes.

What to do next: Before you sign any agency agreement, ask both agencies for a written schedule showing the fee, the GST, the marketing spend and exactly when the fee becomes payable, then ask for the fee to be payable on settlement rather than when the sale goes unconditional. If the sale is part of a move, talk to a mortgage adviser at the same time, because your bridging position, the size of your next loan and whether your current fixed rate carries a break cost will usually move more money than the fee difference you are weighing up here.

Worked Example: A $900,000 Sale

Take a seller with an appraisal of $900,000, comparing Tall Poppy's fixed-fee bands against Barfoot & Thompson's tiered commission. Tall Poppy charges a fixed $22,169.57 in the band that covers this price, and 15% GST of $3,325.43 brings the total to $25,495.00. Barfoot & Thompson charges 3.95% on the first $400,000, which is $15,800.00, then 2% on the remaining $500,000, which is $10,000.00. That is $25,800.00 of commission, comfortably above the $11,000 minimum, so the minimum does not bite. Adding GST of $3,870.00 gives $29,670.00. The fixed fee is $4,175.00 cheaper on this sale.

Now flip the question around. At $900,000, the fixed fee that would exactly match Barfoot & Thompson is $25,800.00 excluding GST. Any quoted fixed fee below that number beats the percentage agency on price at this sale value, and any fixed fee above it does not. That single figure is often more useful than the break-even price itself, because it turns a quote you have in your hand into a straight yes or no.

How the Break-Even Sale Price Is Solved

Both fee structures are piecewise linear functions of the sale price, which is what makes an exact answer possible rather than a guess. A tiered commission is a straight line with a kink at the tier cap, and another kink where the minimum fee stops applying. A fixed-fee structure is a series of flat steps, one per price band. The calculator collects every one of those breakpoints from both structures, sorts them, and then works segment by segment. Inside any single segment neither structure kinks, so the difference between the two totals is a straight line, and the price at which that line crosses zero is found by solving the linear equation directly. The calculator also checks each fixed-fee band edge separately, because a fee that jumps from one band to the next can change the cheaper option at that exact price without the two ever being equal. That is a step change rather than a true equality, and the calculator labels it as the price where the cheaper option switches.

With a tiered structure of 3.95% on the first $400,000 then 2% on the balance, the arithmetic behind a single break-even is straightforward once you see it. The commission at any price above the tier cap is $15,800.00 plus 2% of everything over $400,000. Set that equal to a $22,000 fixed fee and the balance portion has to cover $10,150, which at 2% needs $507,500 of sale price above the cap. Add the $400,000 cap and the break-even sale price is $807,500. Below $807,500 the percentage agency is cheaper. Above it the $22,000 fixed fee is cheaper, and the gap widens by $2 for every extra $100 of sale price.

Why a Minimum Fee Changes the Answer Completely

Almost every mainstream New Zealand agency structure carries a minimum fee, commonly around $11,000 excluding GST, and it is the single most overlooked term in a fee comparison. The minimum is what stops a percentage agency from ever being genuinely cheap on a lower-priced property. On a $250,000 sale a 3.95% rate would produce $9,875, but the minimum fee overrides it and the seller pays $11,000 plus GST regardless. The practical consequence is that a fixed fee set below the minimum is cheaper at every sale price, with no crossover at all, and the calculator will tell you so instead of inventing a break-even that does not exist. If it did not exist, the honest output is that one model wins across the whole comparable range.

Why the Fee Is Rarely the Biggest Number in the Decision

It is worth being blunt about this, because a fee calculator can easily be read as an argument for the cheapest option. On a typical New Zealand sale the difference between a fixed-fee agency and a mainstream percentage agency lands somewhere between a few thousand dollars and around $12,000 including GST. That is real money and worth having. But the difference between a campaign that reaches every serious buyer and one that does not can move the sale price itself by considerably more than that, and the sale price is a much bigger number than the fee. A lower fee is only the better outcome if the marketing reach, the buyer database, the negotiation and the auction or tender skill behind it deliver at least the same price. Equally, a higher commission does not buy a better result by itself. The right approach is to treat the fee as one input, ask each agency for its recent comparable sales in your street and its plan for your property, and then judge the fee against what you are actually getting.

Questions Worth Asking Both Agencies

Ask what the total marketing spend will be, whether it is refundable if the property does not sell, and who owns the photography and the listing if you change agency. Ask when the fee becomes payable, because the common trigger is the moment the sale goes unconditional rather than settlement, and moving it to settlement protects you if the buyer fails to complete. Ask whether the minimum fee, the administration fee and the marketing budget are negotiable, because in New Zealand they all are. Ask how the fee changes if you find the buyer yourself, and whether there is any fee if you withdraw the property. Finally, ask what the agency did on the last three properties it sold near you, and what the difference was between the appraisal and the final price, because that is the number this calculator cannot show you.

Who This Calculator Is For

It is for sellers deciding between a fixed-fee agency and a traditional percentage agency, for anyone holding two written quotes who wants to compare them on the same GST-inclusive basis, and for sellers of higher-value property who suspect a percentage structure is costing them more than the service justifies. It is also useful in reverse: if you like a particular agent at a percentage agency, the break-even fee figure tells you exactly what rate or fixed fee you would need to negotiate to match a cheaper competitor, which is a far stronger position to negotiate from than a vague sense that the fee feels high.

What This Calculator Assumes

Related NZ Property Selling Calculators

Official NZ sources

This calculator is built from New Zealand agency fee structures and consumer guidance. Always confirm the current fee directly with the agency before you sign an agency agreement:

Frequently asked questions

Is a flat fee or a percentage commission cheaper when selling a house in New Zealand?

It depends entirely on the sale price and on the size of the flat fee. A percentage commission grows with the sale price, while a fixed fee does not, so the fixed fee becomes relatively better as the price rises. Because most New Zealand tiered agencies also apply a minimum fee of around $11,000 excluding GST, a fixed fee set below that minimum is cheaper at every sale price. A fixed fee set well above it will only be cheaper once the sale price is high enough for the percentage to catch up.

What is the break-even sale price between a flat fee and a commission?

The break-even sale price is the price at which both fee structures cost exactly the same amount. Below that price the percentage agency is usually cheaper, and above it the fixed fee is usually cheaper, because the percentage keeps growing while the fixed fee does not. For a tiered structure of 3.95% on the first $400,000 then 2% on the balance, a $22,000 fixed fee breaks even at a sale price of $710,000.

Is real estate commission in New Zealand quoted including GST?

Usually, and the exception is the one that catches people out. Percentage commission in New Zealand is quoted exclusive of GST, so you pay 15% on top and a $25,800 commission actually costs $29,670.00. Some fixed-fee agencies do the opposite and publish GST-inclusive prices, so the number on their fee page is the total rather than the starting point. Tall Poppy is the main example. Always compare the GST-inclusive totals, because comparing one agency's GST-exclusive quote with another's GST-inclusive quote will overstate the cheaper agency's advantage by 15%.

Does a fixed-fee agency include marketing and advertising?

Usually not. Marketing and advertising are charged separately by both fixed-fee and percentage agencies, and typically range from about $1,000 to $10,000 or more depending on the campaign. Some fixed-fee agencies include a basic listing package and charge for anything beyond it. Always ask for the marketing schedule in writing and add it to the fee before you compare two agencies.

Is the cheapest fee always the best outcome when selling?

No. On most sales the price achieved matters far more than the fee. The difference between two agency fee structures is commonly a few thousand dollars to about $12,000, while the difference between a well run campaign and a poor one can easily be larger than that on the sale price itself. A lower fee is a real saving, but it is only the better outcome if the marketing reach, buyer database, negotiation and auction skills behind it deliver at least the same price.

Can I negotiate a percentage commission down instead of switching to a fixed fee?

Yes. All real estate commission in New Zealand is negotiable, and so are the minimum fee, the administration fee and the marketing budget. Rates are set by individual offices rather than nationally, so the published or indicative structure is a starting point for a conversation, not a fixed price. Use the custom rate option in this calculator to test what a negotiated rate would actually save you before you sign an agency agreement.

Why does the calculator stop comparing above a fixed-fee agency's top price band?

Because there is no published number to compare. Fixed-fee agencies publish a fee for each price band up to a ceiling, and above that ceiling the fee is negotiated individually. Rather than guessing a figure and presenting it as a comparison, the calculator states that the fee is negotiated at that price and leaves it out of the comparison. If your property is above the top band, ask the agency for a written quote and enter it in the custom fixed fee field.

How accurate are the fee structures used in this calculator?

Each agency in the calculator carries a source flag that is shown on screen. Published means it comes from the agency's own rate card, site means it comes from the agency's website or fee page, and indicative means it is a typical New Zealand structure used as a placeholder and must be verified. Fixed-fee and low-fee pricing changes more often than mainstream commission structures, so confirm the current fee directly with the agency before relying on any figure here.