Break-Even Sale Price Calculator NZ
Getting your money back on a house is not the same as selling it for what you paid, and the gap between those two ideas is larger than almost anyone expects. Buying costs money that vanishes into the transaction, selling costs a great deal more, and anything spent on the property in between has to be recovered too. The result is that a property has to appreciate by several per cent before a sale returns the owner to where they started, and in a flat market a house held for a short time reliably loses money without the market having done anything wrong. This page solves for the one number that makes the position legible: the price at which the sale hands back exactly what went in. Everything above it is a gain and everything below it is a loss, whatever the purchase price happened to be.
What you have put in
Selling at the break-even price
Net proceeds at the break-even price equal the total invested exactly, which is what makes it the break-even.
How far the price has to move
| Sale price | Costs of selling | Net proceeds | Against total invested |
|---|---|---|---|
| At what you paid, $780,000.00 | $38,815.00 | $741,185.00 | -$67,315.00 |
| Break-even, $848,899.69 | $40,399.69 | $808,500.00 | $0.00 |
| Your target, $880,000.00 | $41,115.00 | $838,885.00 | $30,385.00 |
Selling for exactly what you paid would leave you $67,315.00 down, because none of the costs of buying or selling are recovered in the price.
Why selling for what you paid loses money
The purchase price is the most visible number in the whole transaction and the least useful one for this question. Buying incurs legal fees, a LIM, a building report and often a valuation, none of which come back. Selling incurs commission, which on a New Zealand house of ordinary value runs to tens of thousands, plus GST on top of that, plus marketing and legal fees. Add anything spent on the property and the total invested is well above the price on the sale and purchase agreement. Selling at that original price recovers none of the difference, which is why the honest test is not whether the price has gone up but whether it has gone up by enough.
The commission structure changes where break-even sits
Because commission is charged on the sale price, a higher break-even price carries a higher commission, which in turn pushes the break-even higher again. The calculation has to account for that circularity rather than simply adding a fixed cost. It also means the effect of negotiating the commission rate is larger than it looks: each dollar saved reduces the price you need by slightly more than a dollar, because the saving compounds against itself. Tiered structures make this harder to estimate by eye, since the marginal rate above the tier break is what actually drives the answer.
Improvements are recovered at the sale price, not at cost
Money spent on a property is included here because you are asking whether the sale returns it, but it is worth being clear that including it is not the same as claiming it added that much value. Renovations recover very different proportions of their cost depending on what they were and what the market wants. Putting the spend into the break-even simply sets the bar at full recovery, which is the right bar for deciding whether to sell, while telling you nothing about whether the work was a good idea.
Worked example
A house was bought for $780,000.00, with $3,500.00 of buying costs and $25,000.00 spent on it since, so $808,500.00 has gone in. Selling costs are a commission of 4% on the first $500,000.00 and 2% above that, a $500.00 administration fee, GST on both, $3,000.00 of marketing, $1,800.00 of legal fees and a $4,000.00 break fee.
The price that makes net proceeds equal the total invested is $848,899.69. At that price the commission including GST is $31,599.69, and after the other selling costs the net proceeds are $808,500.00, exactly what went in.
Break-even is $68,899.69 above the purchase price, or 8.83%. Selling at $880,000.00 instead produces net proceeds of $838,885.00 and leaves you $30,385.00 ahead, while selling at the original $780,000.00 would leave you $67,315.00 down.
How this is calculated
Total invested is the purchase price plus the costs of buying plus anything spent on the property since. Selling costs at any given price are the tiered commission on that price, plus the administration fee, plus GST on both, plus marketing, legal fees and the break fee. Net proceeds are the sale price less those costs. The break-even is the price at which net proceeds equal the total invested, and because commission depends on the price the two move together, so the calculator solves for it numerically by narrowing a range until the two sides agree to within a cent rather than adding a fixed cost to the total invested. The result is then compared against the purchase price to give the uplift needed, and against the target price to give the gain or loss.
Official sources
- Selling a property, Real Estate Authority
- The bright-line test, Inland Revenue
- GST, Inland Revenue
Related NZ calculators
- Property Break-Even Holding Period Calculator for the same question answered in years
- Net Sale Proceeds Calculator for the cash left after the mortgage is repaid
- Mortgage Break Fee Calculator for the break fee itself
- Private Sale vs Agent Calculator if cutting the commission is the lever
- Holding Cost While Unsold Calculator for what waiting for a better price costs
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How to work out the break-even sale price on a New Zealand house
- Enter what you paid and what buying cost you. The purchase price plus legal fees, the LIM, the building report and anything else spent to get in.
- Add what you have spent on the property since. Renovations and improvements count. Ordinary maintenance is a running cost rather than an investment, so leave it out unless you want the harder test.
- Enter the selling costs. The commission structure from the agency agreement, plus marketing and legal fees. GST is added to the commission automatically.
- Add any mortgage break fee. Selling part way through a fixed term can trigger one, and it comes out of the sale.
- Read the break-even price. The result is the sale price at which you get back exactly what you put in, and how far above your purchase price that sits.