Resilience Holds. Landed-Cost Pressure Accelerates.

One timing point matters. The 21c rise relates to the week ending 25 September, so it predates this week's Russian extension of its diesel export restriction and the Reuters-reported Chinese suspension of product exports. Those developments, the G7's decision to front-load diesel in its reserve release, and continued constraints through the Strait of Hormuz show that the mechanisms behind refined-product pressure have not yet normalised.

NZ imports all of its refined fuel, which exposes it to refined-product conditions in Asia.

HSCM Supply Chain Stress Index

Commercial Signal

A lower Brent is not a lower diesel cost.

More crude moving does not immediately create more diesel. Crude still needs refinery capacity, conversion into middle distillates and an accessible export channel.

Policymakers are treating diesel as the pressure point. The G7 release front-loads diesel, and both the Russian and reported Chinese restrictions concern refined products.

For NZ importers, the currency adds a second layer. A weaker NZ dollar raises the cost of the same USD purchase before another cent is added to the fuel price.

Five measurement points matter:

• Series: This is MBIE's adjusted retail price, the average price paid after discounting, not the board (advertised) price. MBIE's diesel board price for the latest week was not available in citable form at the time of writing.
• Dates: MBIE labels the diesel observation week ending 25 September and its regular-91 board price week ending 27 September. The two use different week-ending conventions and should not be compared directly.
• Petrol: MBIE's regular-91 board price rose 18c to NZ$3.38/L. It is a petrol series and is not used here to corroborate the diesel figure.
• Gaspy: NZ$3.208/L on 4 October is fresher crowd-sourced retail data, 12.7c above MBIE's 25 September figure. It is not MBIE's next print, due on Wednesday 7 October.
• Methodology: On 23 September MBIE revised its importer-cost methodology to capture extra Middle East conflict costs, adding around 10c/L to estimated diesel importer costs since 27 February. That changes importer cost and margin estimates, not the retail prices behind the +21c.

Leading Signals vs Current Reality

1. Freight, Ports & Network

Asia: global headline rates are easing, Asian hub rates are not

Drewry's World Container Index eased 1% to US$4,434 per 40ft container on 1 October. Transpacific rates held (Shanghai to New York US$10,428, +1%; Shanghai to Los Angeles US$7,835, stable) while Asia-Europe lanes eased. The WCI is a global East-West benchmark, not a proxy for NZ freight rates.

The Intra-Asia Container Index rose 2% to a record US$1,518/40ft, and rates from Shanghai to the Singapore and Tanjung Pelepas hub markets each rose 4%. These are intra-Asian indices. They give context for NZ cargo that connects through Asian hubs, but they are not China-to-NZ or Oceania rates.

Linerlytica estimates more than 4 million TEU of capacity is tied up in port congestion, and Dimerco expects Shanghai to stay severely congested into mid-to-late October. These are analyst and forwarder assessments of Asian ports. Drewry expects the WCI to fall next week as Chinese factories close, but says carriers are pushing higher FAK rates for the second half of October.

NZ-specific evidence is thinner. Oceanbridge's 23 September guidance was to book Asia imports three to four weeks ahead, with pre-Christmas cargo-ready dates of 6 November for direct ports and 30 October for feeder ports. Navia's September snapshot placed Shanghai to NZ raw freight at approximately US$2,634/TEU, excluding surcharges and local charges. No update was available, so treat it as a September reference.

Domestic network

Kaitaki resumed sailings on 26 September, restoring the two-ship Interislander pattern. KiwiRail reported Interislander reliability to sail of 99%, excluding weather, in the 2025/26 financial year. Annual reliability does not describe current service, and HSCM did not identify a reported disruption since 26 September in the sources reviewed. Check live sailing status for time-critical freight.

NZTA tender documents allocate a road closure window at SH1 Waiotaka Flood No.2 Bridge from 8pm on 1 October to 5am on 6 October for scour remediation. Check NZTA's Journey Planner for actual status and heavy-vehicle routing before dispatch.

Auckland: the next cost movement is already published

Port of Auckland's price schedule shows its full import/export container FAF rising from NZ$15.00 to NZ$17.50 on 9 October, an increase of NZ$2.50 per container, or 16.7%. The transhipment FAF per leg rises from NZ$7.50 to NZ$8.75, and the vessel-based FAF also rises.

The port states that the FAF tier applicable on the date of vessel arrival is applied, and that the FAF moves in 20% bands on a six-week fuel average with four weeks' notice. The 9 October increase was therefore set before the latest diesel movements. It is a change to a port fuel-adjustment charge, not a 16.7% increase in total container freight or landed cost.

2. Demand, Trade & Inventory

ANZ: expectations steady, cost expectations high

ANZ's September Business Outlook (30 September) recorded business confidence at 51.9, expected own activity at 47.9, reported activity at 10.8, cost expectations at 81.9 and pricing intentions at 48.4. Expected own activity was 52 among responses received early in the month and 36 among those received late, after oil rose again. Firms expect higher costs while fewer plan to raise prices. That is a planning warning, not a measured margin decline.

Construction: a pipeline signal

Stats NZ reported 41,268 new dwellings consented in the year ended August, up 21%, and seasonally adjusted August consents rose 5.6%. Consents are a pipeline measure. They are not confirmed orders or project start dates. Westpac flagged higher interest rates and building costs as headwinds.

Inventory: stage purchasing against realised demand

Survey optimism and consent numbers justify preparation, not blanket inventory growth. High replacement cost is not, by itself, a reason to build stock. Concentrate buffer stock where replenishment variability genuinely threatens service, and tie additional commitments to actual orders and SKU velocity.

Dairy

Fonterra's 2026/27 Farmgate Milk Price midpoint is NZ$9.50/kgMS, with a range of NZ$8.50 to NZ$10.50. The last full GDT event, on 15 September, fell 1.1%. Event 413 trades on 6 October.

3. Energy, FX & Finance

Refined-product developments, by source

Russia (official): On 30 September the Russian government extended to 31 October its ban on exports of diesel, marine fuel and gas oils by producers, citing domestic fuel-market stability during the harvest. The ban on non-producers' diesel exports runs to 31 January 2027. Earlier Russian resolutions have allowed exports under intergovernmental agreements and as humanitarian aid, so this restricts commercial exports. It does not stop every Russian diesel cargo.

China (Reuters, unnamed sources): Reuters reported on 1 October, citing four people briefed on the matter, that Chinese refiners had suspended oil-product exports to destinations beyond Hong Kong and Macau until further notice from Beijing. It reported that PetroChina cancelled some gasoline and jet fuel cargoes planned for October, and that it was not clear whether exports would resume after Golden Week ends on 7 October. HSCM did not identify a published Chinese government notice. PetroChina and the NDRC had not responded to Reuters at publication.

G7 and IEA (official): A G7 leaders' statement released by President Macron's office on 2 October set out a coordinated release through the IEA of 100 million barrels of oil and petroleum products. It begins immediately and runs over four months, including a front-loaded substantial diesel release within the first 20 days by members and partners. The statement as reported gave no crude-versus-diesel breakdown or country allocation. G7 members also committed to refrain from energy export restrictions between themselves. The IEA says about 325 million barrels of the 400 million barrel March action had been released by 2 October.

Strait of Hormuz (statements, not traffic data): On 4 October Iran's parliament speaker said Hormuz will not reopen until Iran's seven conditions are met, while its foreign minister said a Tehran proposal could allow reopening within seven days if the US accepts. Iraq's state tanker company said on 3 October that it had transported 2 million barrels of Iraqi crude through the strait on a VLCC, and Reuters noted Iraq had previously secured Iranian permission for its tankers to transit. HSCM did not verify current transit counts or a specific tanker incident this week. Navigation remains severely constrained.

Emergency stock releases add prompt barrels. They do not by themselves restore refining capacity or lift export restrictions, so they do not automatically resolve refined-diesel tightness. NZ is not a G7 member, so any effect on NZ import costs would come indirectly through regional and global diesel pricing, with timing uncertain.

Brent traded around US$102 to US$103 on 2 October on market-data readings. Brent alone is not a signal for future diesel or freight costs.

How it reaches New Zealand

Since Marsden Point stopped refining in 2022, New Zealand has imported all of its refined fuel, and Asian refineries in Singapore and South Korea are central to its supply. When Asian diesel tightens, NZ buyers compete in the same regional market.

The cost chain runs: Asian refined-diesel value → physical availability and premium → product-tanker freight and insurance → NZD/USD → NZ wharfage, storage and distribution → carrier fuel surcharge. No verified current NZ-specific tanker premium was available, so tanker availability, war-risk insurance and routing should stay as variables in landed-cost reviews, not invented dollar assumptions. Drewry's container indices measure container freight, not product-tanker rates.

On availability, MBIE publishes stock updates on Mondays and Wednesdays. The most recent position HSCM verified was as at 20 September: 28.7 days of diesel physically in NZ, plus 7.5 days on ships inside the EEZ and 14.5 days outside it, about 50.7 days in total excluding strategic reserves. HSCM did not verify a later update. HSCM did not identify a reported physical diesel shortage in the sources reviewed. The issue shown by the data is cost.

FX is amplifying the shock

NZD/USD was 0.55915 on 2 October (RBNZ B1), down 1.2% from 0.56595 on 25 September. The TWI was 63.81, down 0.8% from 64.34. A NZ dollar cost equals the USD invoice divided by NZD/USD, so a lower rate means more NZ dollars for the same invoice.

For a US$100,000 invoice, before bank spreads and fees:

The last two rows are arithmetic illustrations, not forecasts. The fuel and FX effects are separate and compound: a NZ operator does not need another 21c diesel increase for margin pressure to continue.

Rates: policy, statements, market pricing and planning

Current policy: The OCR is 2.75%, raised by the RBNZ on 2 September.

RBNZ statements: Governor Anna Breman said on 22 September that higher oil prices could push near-term inflation above what the September Statement assumed. The RBNZ's own track, published on 2 September, pointed to a pause in October and a hike in December.

Market pricing: As at 28 September, FXStreet reported markets pricing about an 80% chance of a hike to 3.00% on 28 October, against roughly one in three just after the 2 September decision. This is market pricing, not an RBNZ decision, and it may have changed since.

HSCM planning: HSCM does not forecast the decision. Test whether inventory and financing assumptions still work under both a hold and a 25bp hike, with NZD/USD near current levels. September-quarter CPI is due on 22 October (NZ time).

4. Compliance & Trade Risk

NZ-India FTA enters into force on 20 October

MFAT confirms the agreement has been ratified, paving the way for entry into force on 20 October 2026. Importers sourcing from India and exporters shipping to India should check HS classification, origin evidence and tariff eligibility before qualifying shipments.

BMSB: the transitional exception has ended for new exports

MPI's seasonal measures apply to target vehicles, machinery and parts exported from risk countries on or after 1 September and arriving in NZ on or before 30 April. The exception for goods loaded into a fully enclosed container sealed before 1 September applies only to containers exported before 1 October. Shipments exported from 1 October no longer qualify.

Importers that relied on the exception should hold the sealing evidence MPI requires and confirm the applicable pathway for each shipment before arrival. HSCM did not identify a publicly reported enforcement action in the sources reviewed. That is not proof that none has occurred.

US lamb safeguard: the dates are close

USITC prehearing briefs are due 8 October, the in-person hearing is 16 October, and the injury determination is due 13 November. A remedy hearing would follow on 1 December if the finding is affirmative or split, with the report to the President by 11 January 2027. NZ sheepmeat exports to the US are worth about NZ$685m.

What Smart Operators Are Doing Now

• Resetting landed cost. Recalculate committed USD purchases at current exchange rates, confirmed all-in freight and actual fuel or FAF mechanisms. Identify SKUs where cost movement has pushed contribution below target before releasing the next purchase order.
• Auditing fuel surcharges. Check the benchmark used, observation date, reset cadence, lag, floors and caps, and whether reductions pass through as quickly as increases. Use diesel, not petrol, as the benchmark.
• Quantifying FX exposure. List unhedged USD commitments, settlement dates and price-validity periods, and stress-test at 0.56 and below. Discuss hedging with the bank or a treasury adviser.
• Staging purchases against realised demand. Tie additional commitments to orders, project milestones and customer conversion, not to survey optimism or consent numbers.
• Running a shipment-readiness review. Over the next four to six weeks, review Asian routings and transhipment points, carrier surcharge reset dates, Auckland arrivals around 9 October, India-origin eligibility ahead of 20 October, and critical domestic movements affected by road works.
• Protecting critical lanes. Identify alternative carriers, delivery windows and intermodal options, and close BMSB evidence gaps for any shipment that relied on the transitional exception.

Base Case

Resilience holds at home. Offshore cost pressure accelerates.

The conditions supporting refined-product pressure have not yet normalised. Russia's producer restriction runs to 31 October, the reported Chinese suspension has no resumption date, and Hormuz navigation remains severely constrained. The G7 release is the main offsetting measure. Demand indicators are constructive but mixed, and FX is the clearest immediate cost deterioration.

The scenarios below are planning tools, not forecasts or predictions of any RBNZ decision:

Relief case: If reserve releases arrive quickly, China resumes meaningful exports after October, Russian supply recovers and Hormuz navigation improves, Asian diesel premiums could ease and NZ pump prices could begin falling with a lag.

Middle case: If reserves cap the worst spikes but Russian and Chinese constraints persist, diesel could remain elevated and volatile, and NZ fuel surcharges could stay high.

Stress case: If refinery losses, tanker incidents, an extended Chinese suspension or worse Hormuz conditions occur, product premiums, tanker costs and USD fuel costs could rise together, and NZ relief could be delayed.

Key Triggers

• NZD/USD: a sustained move below 0.55.
• MBIE diesel: the next weekly print against Gaspy's NZ$3.208/L on 4 October.
• China: whether the reported suspension is extended or lifted after 7 October.
• Russia: whether the 31 October producer restriction is renewed.
• Golden Week: schedule recovery and rollovers after 7 October.
• Rates: September-quarter CPI on 22 October and the RBNZ decision on 28 October.

Dates to Watch

• 6 October: GDT Event 413 (result early 7 October NZ time)
• 6 October: End of NZTA's allocated closure window at SH1 Waiotaka Flood No.2 Bridge (5am); check actual status
• 7 October: MBIE weekly fuel update; end of China Golden Week
• 8 October: USITC lamb prehearing briefs due
• 9 October: Port of Auckland container FAF rises to NZ$17.50
• 15 October: Commerce Commission fortnightly fuel monitoring report
• 16 October: USITC lamb injury hearing
• 20 October: NZ-India FTA enters into force
• 22 October: NZ September-quarter CPI (NZ time)
• 28 October: RBNZ OCR decision
• 31 October: Russia producer diesel export restriction scheduled to expire
• 13 November: USITC lamb injury determination

The Week in Context

Last week, resilience improved. This week, the domestic picture looked steadier than the offshore one.

Kaitaki is back in service, consents are at a three-year high and the ANZ survey still shows constructive activity expectations.

But cost indicators moved higher on several fronts at once. MBIE's diesel series rose 21c in a week. The NZ dollar fell below 0.56. Asian freight set another record. And Russia, China and continued constraints through the Strait of Hormuz show that the mechanisms supporting refined-product pressure have not yet normalised.

The G7 reserve release offers some relief. It adds prompt barrels, not refining capacity.

For NZ importers, distributors and manufacturers, the priority is a landed-cost reset, not a prediction. Know the current diesel benchmark. Know how your carrier's surcharge works. Know which foreign-currency commitments are unhedged. And know which inventory and customer commitments still make sense at today's replacement cost.

Crude may be easing. The mechanisms supporting refined-product pressure have not yet normalised.

Sébastien Mallevialle CSCP | HSCM Solutions
sebastien.mallevialle@hscmsolutions.com | hscmsolutions.com
Published every Monday | Issue #20 | 5 October 2026 | Next: Monday, 12 October 2026

This publication is provided for general informational purposes only and reflects the author's independent analysis of publicly available information at the time of writing. It does not constitute financial, legal, tax, investment, or professional advice. Readers should seek independent professional advice before making decisions based on this content. While reasonable care has been taken in preparing this publication, HSCM Solutions makes no representations or warranties regarding its accuracy, completeness, or suitability for any particular purpose and accepts no liability for any loss arising from reliance on this publication.

Sources: MBIE weekly fuel price monitoring, price for fuel response support and fuel-stock updates · Reserve Bank of New Zealand B1 exchange rates and statements · Gaspy via NZ Fuel Watch · Interfax and TASS (Russia) · Reuters (China, Hormuz, Iraq) · G7 leaders' statement via the Élysée and the IEA · Drewry WCI and IACI · Linerlytica and Dimerco · Oceanbridge and Navia NZ freight intelligence · Port of Auckland price schedule · KiwiRail and Interislander · NZTA tender documents · Stats NZ · ANZ Business Outlook · Westpac · Commerce Commission · MFAT · MPI · USITC · Fonterra · Global Dairy Trade · FXStreet