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Subletting and Short-Stay Hosting Your Rental

Listing a spare room, or the whole place while you are away, looks like straightforward extra income. Four separate sets of rules disagree, and they do not talk to each other. Your tenancy agreement or title has something to say, your council has something to say, Inland Revenue has something to say, and if you are in an apartment the body corporate has something to say as well.

None of that makes it a bad idea. It makes it a thing to check before the first booking rather than after, because the consequences of getting it wrong range from a tax bill you did not expect to losing your tenancy.

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The three things to remember

If you rent, you need the landlord's written consent to sublet. Short-stay income is taxable from the first dollar. And once turnover from a taxable activity passes $60,000 in twelve months, GST registration becomes compulsory.

GST is the trap, not income tax

People plan for income tax and are blindsided by GST. Short-stay accommodation is a taxable activity, so the takings count towards the $60,000 registration threshold. Worse, registering can drag the property itself into the GST net, and there can be a GST cost when you later sell or stop the activity. That is the point at which a hobby becomes an expensive mistake, and it is the single best reason to take advice before scaling up.

If you rent: consent first

A tenant cannot sublet without the landlord's consent. That covers subletting a room, taking in a flatmate where the agreement requires it, and listing the property on a short-stay platform. Doing it without consent is a breach of the tenancy, and it is one landlords take seriously because it affects their insurance and their own obligations.

Ask in writing and keep the reply. A landlord who consents to one thing has not consented to everything: permission to have a flatmate is not permission to run a short-stay business from the property.

Subletting is not the same as a flatmate

Subletting creates a tenancy between you and the subtenant, with you as their landlord and all the obligations that carries, including lodging their bond. Taking in a flatmate does not. The distinction decides who can go to the Tenancy Tribunal and who is liable for what, and it is covered in boarding houses and renting a room.

The council question

District plans treat short-stay accommodation as a use of land, and uses of land are what district plans regulate. Some councils permit it outright, some permit it up to a number of nights a year, and some treat it as a commercial activity in a residential zone that needs resource consent.

There is often a rates dimension too. A property used substantially for short-stay accommodation may be rated differently from an owner-occupied home, and that reclassification can be worth more per year than a handful of bookings.

Check the district plan for your zone and for any specific short-stay rules.
Check whether a night cap applies, and whether it counts nights hosted or nights let unhosted.
Check the rating category, because a change can be backdated.
These vary more between councils than almost anything else in this guide.

Body corporate and covenants

An apartment adds a further layer. Body corporate operational rules can restrict or prohibit short-stay letting, and those rules bind you as an owner. Some titles also carry covenants that limit the use of the property. Both are enforceable, and both are easier to read before you list than to argue about afterwards.

Insurance sits alongside this. A standard house or contents policy is written for a home, not for paying guests. Tell your insurer what you are doing and get the answer in writing.

Income tax on short-stay income

Short-stay income is taxable. There is no equivalent of the boarder standard-cost method that quietly removes it, and the platform reports what it pays you.

Against that income you can deduct expenses relating to earning it. Where the property is used both privately and for guests, the expenses have to be apportioned, and there are specific mixed-use asset rules for properties that are used privately, used to earn income, and left empty for periods during the year. Those rules are more restrictive than ordinary rental apportionment and catch a lot of holiday homes.

Whole property, let year round to guests: ordinary rental style deductions, apportioned for any private use.
A room in your own home: apportion by floor area and by time, and keep the basis you used.
A holiday home used privately and let out, empty for part of the year: the mixed-use asset rules are likely to apply.
The apportionment basis matters as much as the numbers, and it needs to be consistent and defensible.

The short-stay versus long-term rental calculator compares the two on a net basis rather than a headline nightly rate, which is where short-stay usually looks less dominant than it first appears once cleaning, vacancy and management are counted.

GST, and the part that surprises people

Supplying short-stay accommodation is a taxable activity for GST. Once your turnover from all taxable activities exceeds $60,000 in a twelve month period, or you expect it to, registration is compulsory.

Registering can affect the property itself

Where a property is used in a GST-registered activity, GST consequences can follow on sale or when the activity stops. A house that was outside the GST system can be pulled into it, and the amount at stake is a percentage of a property value rather than of a year's rent. Anyone approaching the threshold should take advice before crossing it, not after.

The short-stay GST threshold calculator shows where your bookings sit against the threshold. Note that it is a rolling twelve month test rather than a tax year test, so a strong summer can trigger it mid-year.

Working out whether it is actually worth it

The nightly rate is the most visible number and the least useful one. What decides the outcome is the net figure after everything that a long-term tenancy does not cost you.

Cost Why it bites
Occupancy A high nightly rate at 45% occupancy can lose to a modest weekly rent at 100%
Cleaning and laundry Per stay, not per month, so short stays cost proportionally more
Platform and payment fees Taken off the top of every booking
Consumables and replacement Linen, towels and furnishings wear far faster with turnover
Your time, or a manager's fee Messaging, check-ins and problems are real work
Insurance and compliance Specialist cover and any consent or rating change

Run it properly with the nightly rate calculator to work out what rate you would actually need, then compare against a long-term tenancy on the same property.

The order to do this in

Consent first, because if the landlord or body corporate says no, nothing else matters. Council second, because a resource consent requirement changes the economics completely. Insurance third. Then the numbers. Then list. Doing the numbers first is how people talk themselves into something they were never allowed to do.

What this guide does not cover

Commercial accommodation businesses, motels and holiday parks operate under different rules. The bright-line test and other property tax rules can be affected by how a property is used, which is its own subject. Overseas hosts and non-resident owners have additional obligations. This is general information rather than tax or legal advice, and the GST position in particular is worth an accountant's time before you cross the threshold.

Test Your Knowledge

Ten questions on letting out space you already pay for.

1. You rent your home. What do you need before subletting?
The landlord's written consent
Nothing, subletting is a tenant right
Only 48 hours notice to the landlord
Council approval only
2. At what turnover does GST registration become compulsory?
$30,000
$60,000
$100,000
There is no threshold for accommodation
3. Is the GST threshold measured over a tax year?
Yes, 1 April to 31 March
No, it is a rolling twelve month test
Yes, the calendar year
It is measured per booking
4. Is short-stay income taxable?
Yes, from the first dollar
No, it is covered by the standard-cost method
Only above $4,000 a year
Only if you register for GST
5. What is the main risk of registering for GST on a short-stay property?
Higher income tax rates apply
GST consequences can follow on sale or when the activity stops
You lose the ability to deduct expenses
The council must be notified
6. What does subletting create that taking in a flatmate does not?
A tenancy between you and the subtenant, with you as their landlord
A GST liability
An automatic rent increase
Nothing, they are the same arrangement
7. Which rules can apply to a holiday home used privately, let out, and empty part of the year?
The boarder standard-cost method
The mixed-use asset rules
The bright-line test only
No special rules apply
8. You own an apartment. What can prohibit short-stay letting outright?
Body corporate operational rules, and title covenants
Only the council
Only your mortgage lender
Nothing, an owner may use their property as they wish
9. Why can a high nightly rate still lose to a long-term tenancy?
Because short-stay income is taxed at a higher rate
Because occupancy, cleaning, fees and turnover costs come off it
Because platforms cap nightly rates
Because long-term rent is GST free
10. What is the right order of checks before listing?
Numbers, then listing, then consent
Consent, council, insurance, then the numbers
Insurance only
Council first, consent is not needed if the council allows it

Sources: Tenancy Services on subletting and assignment, Inland Revenue on short-stay accommodation, mixed-use asset rules and GST registration, and your local council's district plan. District plan rules and rating categories vary considerably by council and must be checked locally.

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