MPI Biosecurity: Getting Through the NZ Border Without Nasty Surprises
MPI can inspect, treat or destroy your goods at your expense. Which products are high-risk, what ISPM 15 requires, and how to clear cleanly.
Picture this: your first container arrives at Tauranga, Customs is happy, GST is paid — and then MPI opens the doors and finds your goods stacked on untreated wooden pallets. Your options are now treatment or destruction of the packaging, at your expense, with your stock sitting in limbo while it happens. Nothing about your product was wrong. Your supplier just used cheap pallets.
New Zealand runs one of the strictest biosecurity regimes on earth, for good reason — our primary industries are the economy, and one invasive insect can do billion-dollar damage. The Ministry for Primary Industries (MPI) polices this under the Biosecurity Act 1993, and its powers are sweeping: inspect, treat, hold, destroy, or order goods re-exported — all at the importer's expense.
The system isn't there to catch you out. It's predictable, documented, and entirely manageable if you do three things before ordering. Here's how.
Know if your product is high-risk
Biosecurity risk isn't about your product's quality — it's about what can hitchhike on it. The categories that attract MPI's attention:
- Timber and wooden furniture — insects and larvae in the wood itself
- Natural fibres — seagrass, rattan, bamboo, wicker, coir
- Outdoor and garden goods — pots, tools, furniture that may carry soil or plant material
- Gym equipment — rubber matting and padding with plant-fibre content has a history of interceptions
- Stone and clay items — soil contamination
- Used goods of any kind — machinery, vehicles, second-hand anything gets heavy scrutiny
- Anything visibly contaminated — soil on a container's underside can flag the whole box
Plastic phone cases and electronics in clean cartons? Low risk. A container of rattan outdoor furniture? Expect attention, and plan for it.
Before you order, check whether an Import Health Standard (IHS) applies to your product on mpi.govt.nz. An IHS sets out exactly what condition goods must arrive in and what treatments or declarations are required. If your product has one, the requirements go into your purchase order, spelled out for the supplier — Chinese factories with no NZ customers will not know our rules, and it's your job as importer to tell them.
ISPM 15: the pallet rule that catches everyone
The single most common biosecurity failure has nothing to do with the product. It's the wood packaging.
All solid-wood packaging entering New Zealand — pallets, crates, dunnage, bracing — must comply with ISPM 15: heat treatment at 56°C for 30 minutes, or fumigation, certified by a stamp on the wood showing the country and producer code. No stamp, or an illegible one, and MPI treats the packaging as non-compliant. The consequences are treatment or destruction costs, delay, and sometimes unpacking your entire consignment onto compliant pallets.
The fix costs one line in your purchase order: "All wood packaging must be ISPM 15 compliant and stamped accordingly." Then verify — ask for photos of the stamped pallets before the container is loaded, and have your pre-shipment inspection confirm it. Better still, ask your supplier to use plastic pallets and skip the issue entirely where the economics allow.
Get the container paperwork right
Sea containers themselves are a biosecurity pathway. Containers arriving in NZ need quarantine declarations covering their cleanliness, and go to approved transitional facilities for devanning rather than just anywhere you fancy. In practice your freight forwarder and customs broker manage this — the entry lodged through the Trade Single Window feeds MPI alongside Customs — but two things sit with you:
- Tell your supplier the container must be clean, dry and free of soil and plant material before loading. Photos before loading cost nothing.
- Make sure your forwarder knows your goods' nature so any inspection is scheduled, not a surprise.
If MPI does direct an inspection or treatment — fumigation, washing, heat treatment — you pay, and your timeline stretches. Build a buffer into your launch plans for risk-category goods rather than promising customers stock the day the vessel berths.
Make it boring
The importers who never have MPI stories are the ones who treat biosecurity as a specification, not a surprise. Their purchase orders specify ISPM 15 packaging and clean containers. They've checked mpi.govt.nz for an IHS before falling in love with a product. They avoid marginal categories early on — leaving the used machinery and seagrass baskets until they have experience and a broker relationship. And their inspections photograph pallets, not just products.
That's the whole game: MPI publishes the rules, and suppliers will follow them — but only if you put the rules in front of them and check.
Key takeaways
- MPI can inspect, treat, hold, destroy or re-export non-compliant goods — always at your expense — under the Biosecurity Act 1993.
- Check mpi.govt.nz for an Import Health Standard on your product before ordering, and put the requirements in your purchase order.
- ISPM 15 wood packaging (heat treated 56°C/30 min or fumigated, and stamped) is mandatory — specify it, then verify with photos and your inspection.
- High-risk categories (timber, natural fibres, outdoor goods, used items) need extra planning; keep first imports to clean, low-risk products.
Related: Packing, Labelling and Shipping Marks — Including the ISPM 15 Pallet Rule, The New Goods Management Levies: What Changed at the NZ Border in April 2026
