Two businesses buying identical assets on the same day can end up with different tax outcomes purely because of the agreement they signed. This guide explains the mechanism and points at who settles it.
Read this first
Everything below is general information about how GST and depreciation work in New Zealand asset finance. It is not a statement about how any particular arrangement will be treated, because that depends on the structure chosen, the accounting basis the business uses, the specific contract terms, the asset category and how the asset is actually used. No website can see any of those. Every claim in this guide is subject to the accountant’s confirmation on the specific position, and Inland Revenue is the primary source for any specific question. This site is not a chartered accountant and nothing here is tax advice.
The short version
The mechanism
A business that owns an asset used to earn income claims a deduction for its decline in value over time, at a rate Inland Revenue publishes for that category of asset. That is depreciation, and it is available to whoever is treated as the owner.
Under a hire purchase the financier holds legal title as security, and the business is ordinarily treated as the owner in substance, so the depreciation claim sits with the business, subject to the accountant’s confirmation. Under a chattel mortgage the business holds title outright and reaches the same place more directly. Under an operating lease the financier both holds title and is the owner in substance, so the claim ordinarily stays with it and the business deducts the rental instead.
GST works on its own timeline. Under a hire purchase a GST-registered business is generally able to claim the GST on the full purchase price in the return covering the period the agreement begins, rather than spreading it across the payments, subject to the accountant’s confirmation of the accounting basis used. Under an operating lease the GST is typically claimed on each rental as it is invoiced, again subject to that confirmation. On a substantial asset that difference is a large cash-flow event arriving either within months or spread across years.
Depreciation follows
Ownership
GST timing follows
The structure
Deductible on a purchase
The interest
Deductible on a lease
The rental
By structure
General positions only. Every line is subject to the accountant’s confirmation on the specific arrangement, because the treatment turns on facts particular to the business and the contract.
| Structure | Depreciation | GST on the purchase | What the business deducts |
|---|---|---|---|
| Hire purchase | Ordinarily the business | Generally up front | Depreciation plus the interest component |
| Chattel mortgage | Ordinarily the business | Generally up front | Depreciation plus the interest component |
| Secured asset loan | The business, as existing owner | Not applicable, nothing is bought | Depreciation as before, plus interest |
| Finance lease | Depends on the arrangement | Depends on the arrangement | Depends on the treatment |
| Operating lease | Ordinarily the financier | Typically on each rental | The rental as an expense |
General positions across the structures on this site. Subject to the accountant’s confirmation in every case.
The two methods
Diminishing value
The deduction is calculated on the asset’s remaining value each year, so it is largest in the first year and falls thereafter. It broadly mirrors how equipment actually loses value, since most plant loses more early than late.
For a business with taxable profit now, front-loading the deduction is worth more than the same total spread evenly, because a deduction taken earlier is worth more than one taken later.
Straight line
The deduction is the same amount every year across the asset’s life, which makes forecasting simpler and produces a smaller deduction in the early years.
Which suits depends on the business’s tax position rather than on the asset, and the choice is one the accountant makes with the whole picture in view. Inland Revenue publishes both rates for each asset category.
The two timelines
A $100,000 asset financed over five years under a hire purchase, with the business treated as the owner, shows the shape of it. Two things happen on very different timelines and are frequently confused with each other.
The GST on the purchase is generally claimable in the return covering the period the agreement begins, subject to the accountant’s confirmation of the accounting basis used. That is a single cash-flow event landing within months of settlement, and on a substantial asset it is frequently the largest immediate effect of the whole transaction.
The depreciation deduction, by contrast, is spread across the years the asset is used at the rate published for its category. Under diminishing value it is largest in year one and falls; under straight line it is even. Neither method changes the total eventually deducted, and both change when the benefit arrives.
The two timelines
Illustrative and general. The treatment of any particular purchase is subject to the accountant’s confirmation.
Where it goes wrong
None of these are exotic. Each comes from treating one part of the arrangement as though it were another.
01
Under a purchase structure only the interest component is ordinarily deductible, subject to the accountant’s confirmation, because the principal is buying an asset being depreciated separately. Doing both counts the same cost twice.
02
An operating lease and a hire purchase on the same asset produce genuinely different tax positions. Selecting on the weekly figure and discovering the consequence afterwards is the ordinary sequence and the wrong one.
03
Selling or trading an asset for more or less than its depreciated book value produces an adjustment in that year, subject to the accountant’s confirmation. On an upgrade it is easy to overlook entirely.
04
Inland Revenue’s categories are more granular than most people expect, and the same physical asset can fall into different ones depending on the industry it is used in. It is a filing question rather than a judgement call.
05
Where an asset is used partly privately the deduction is ordinarily apportioned, and the apportionment has to reflect actual use rather than an estimate made once. This arises more on vehicles than on plant and it arises often.
06
Under a hire purchase the amount financed is normally the GST-exclusive price. Entering the inclusive figure into a calculator or a forecast overstates the payment and the interest.
Timing
The point at which an accountant can change the outcome is before the structure is chosen, not after the asset arrives. By then the structure is fixed, the ownership position is fixed and with it the depreciation claim, and the only remaining question is how to file what has already happened. There is one further timing question worth raising in the same conversation, which is where in the financial year the purchase falls. A transaction either side of a balance date, or a disposal creating an adjustment in a year with an unusual result, are both situations where a few weeks materially change the outcome, and they are exactly the cases an accountant will spot and a buyer will not.
The practical side
Records
The finance agreement itself, the supplier invoice, and the amortisation schedule showing how each payment divides between interest and principal are the three documents that make the treatment straightforward, and a business that keeps them together at the point of purchase saves itself a reconstruction exercise a year later.
The schedule is the one most often missing. Financiers supply it and it is filed and forgotten, and without it the split between interest and principal has to be estimated rather than taken from the document that already states it.
Where an asset is later sold, traded or written off, the same folder is what establishes the position, subject to the accountant’s confirmation of how the disposal is treated. Assembling it at the end is considerably harder than keeping it from the start.
Apportionment
Where an asset is used partly outside the business, the position is ordinarily apportioned to reflect actual use, subject to the accountant’s confirmation of how the apportionment is calculated and evidenced.
This arises far more often on vehicles than on plant, and it is the single most common source of adjustment on an otherwise simple file. An apportionment set once at purchase and never revisited is a position based on an assumption rather than on what happened.
The evidence matters as much as the percentage. A record kept contemporaneously is a different proposition from a figure arrived at afterwards, and the difference shows up precisely when it is least convenient.
Timing
The financial year a transaction falls into is fixed by the date it happens, and the consequences of that can be material in a way that is invisible at the time. An asset acquired shortly before a balance date sits in one year, and the same asset acquired a fortnight later sits in the next, with everything that follows from it landing twelve months apart.
The same is true in reverse on a disposal. Trading a machine in a year that has already been unusual, whether unusually strong or unusually weak, produces an adjustment that interacts with the rest of that year’s position, subject to the accountant’s confirmation of the amount and its treatment.
None of this is a reason to build a purchasing decision around a date. It is a reason to mention the timing when the accountant is asked about the structure, because it is one of the few things in this area where a short conversation held early changes the outcome and the same conversation held late cannot.
The other number
The calculator produces the cash cost of a facility. The tax effect is separate, arrives on a different timeline, and is confirmed by the accountant. Indicative only, and not a quote or offer of credit.
Indicative repayment
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Redirecting…
Method
Everything here is drawn from Inland Revenue’s published guidance on depreciation and GST. No figures for specific asset categories appear on this page, deliberately. Published rates change, the categories are more granular than a summary can honestly represent, and a rate quoted on a page read two years later is worse than no rate at all. The rate finder is linked below and is the correct place to look.
This guide describes a mechanism. It is not personalised tax advice, this site is not a chartered accountant or a registered financial adviser, and the treatment of any particular arrangement depends on facts specific to the business. The accountant is the right person to settle it.
References
The primary published source for everything on this page, including the rate finder.
The published source for the GST timing described under each structure.
Context for how a depreciation deduction interacts with a business’s wider tax position.
The accounting standard relevant to how leases are presented, which is distinct from the tax treatment.
Referenced for the point that a chartered accountant is the appropriate adviser on a specific position.
FAQ
Ordinarily whoever is treated as the owner. Under a hire purchase or chattel mortgage that is normally the business; under an operating lease it is ordinarily the financier and the business claims the rental instead. The position depends on the specific arrangement and is subject to the accountant’s confirmation.
Under a hire purchase, a GST-registered business is generally able to claim the GST on the full purchase price in the return covering the period the agreement begins, subject to the accountant’s confirmation of the accounting basis used. Under an operating lease it is typically claimed on each rental as it is invoiced.
No. Under a purchase structure only the interest component is ordinarily deductible, subject to the accountant’s confirmation, because the principal is acquiring an asset that is being depreciated separately. Deducting the whole payment and also claiming depreciation would count the same cost twice, which is why the split is worth confirming with the accountant before the return is filed.
Inland Revenue publishes rates by category of asset in its depreciation rate finder. The categories are more granular than most people expect, and the same physical asset can fall into different ones depending on the industry it is used in. Which applies is a question for the accountant.
Diminishing value calculates the deduction on the asset’s remaining value each year, so it is largest early and falls. Straight line spreads it evenly. Both reach the same total; they differ on when the benefit arrives, and which suits depends on the business’s tax position.
Selling or trading for more or less than the depreciated book value produces an adjustment in the year of disposal, subject to the accountant’s confirmation. It is a real consequence of an upgrade and is easy to overlook when attention is on the replacement.
Costs of getting an asset to the point where it can be used can form part of its cost base, which is one more reason to have delivery, installation and commissioning quoted rather than absorbed. What qualifies in a particular case is confirmed by the accountant.
Where an asset is used partly for private purposes the deduction is ordinarily apportioned to reflect that, and the apportionment has to be based on actual use rather than on an estimate made once. It arises more often on vehicles than on plant and is a common source of error.
Tax should be visible in the decision rather than driving it. It changes the after-tax cost at the margin and does not change whether the asset earns its keep or whether the business can service the facility. A purchase that only works because of its tax treatment is usually worth re-examining.
Because published rates change, the categories are more granular than a summary can honestly represent, and a rate quoted on a page read two years later is worse than none. The Inland Revenue rate finder is linked in the sources and is the correct place to look.
It can. A transaction falling either side of a balance date, or a disposal creating an adjustment in a year with an unusual result, are both cases where a few weeks materially change the outcome. Those are exactly the situations an accountant will spot in a short conversation.
No. It is general information about how a mechanism works. This site is not a chartered accountant or a registered financial adviser, and the treatment of any particular arrangement depends on facts specific to the business that a website cannot see. Inland Revenue is the primary source and the accountant is the right adviser.
Related
Hire purchase
The structure with the most familiar tax position.
Read onOperating lease
Where the depreciation claim ordinarily stays with the financier.
Read onLease accounting under IFRS 16
The accounting question, which is distinct from the tax one.
Read onHire purchase against finance lease
Where the two tax positions diverge in practice.
Read onEnd of term options
The disposal adjustment that comes with a trade-in.
Read onDisclaimer
Financing a machine is a commitment that runs for years, and the repayments come out of the same operating cash flow as everything else. Modelling the weekly and monthly cost against the working-capital position before committing is what this site is built for. Borrowing at a level that stays comfortable through a quiet quarter, rather than only through a strong one, is widely regarded as the safer frame.
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What the figures show
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Tax, GST, and accountant framing
Tax-treatment statements (GST claim timing, interest deductibility, depreciation rates) are general in nature and subject to the accountant's confirmation on the specific business position. For material amounts, professional advice from a registered financial adviser or chartered accountant is widely regarded as the safer frame.
