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Explainers and guides that show their working. Every one names its source and links to the calculator that does the arithmetic, and where a checked date is recorded it is shown beside the source.

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Explainer
A shorter fix costs less today and asks you to roll the dice sooner. Here is the arithmetic behind that trade, and the question worth asking before you pick.
The number it turns on
5.55% and 5.86%
One-year and two-year rates

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51 guides and explainers

Tax

Explainer2 min
Your prescribed investor rate is the rate your KiwiSaver and managed funds are taxed at. Nobody sets it for you, and both directions of error cost something.
Guide2 min
Registering is compulsory above a turnover threshold and optional below it. The optional case is where people get it wrong in both directions.
Source: Inland Revenue GST rules · Checked
Explainer5 min
One number in last year's return decides whether you spend next year paying tax three times instead of once. Here is what crosses the line, what the instalments are, and what Inland Revenue charges when they are short.
Source: Inland Revenue, provisional tax guidance · Checked
Explainer3 min
The foreign investment fund rules have a cost-based exemption for eligible investors. The exemption and Australian-share exceptions have separate conditions.
All 10 tax guides

Retirement

Guide2 min
The standard employee rate is now 3.5%. Higher employee rates and a temporary reduction have different rules for employer contributions.
Source: Inland Revenue KiwiSaver contribution rules · Checked
Explainer3 min
The payment is not income tested and not asset tested, which makes it simpler than people expect. The residence rule is no longer a single flat number of years, and that change is easy to miss.
Source: Work and Income, benefit rates from 1 April 2026 · Checked
Explainer2 min
Eligible members receive a government contribution based on their own contributions, with an annual cap, an income limit and part-year eligibility rules.
Explainer2 min
Significant financial hardship and serious illness are separate early-withdrawal grounds, with evidence requirements and different contribution treatment.
Source: Inland Revenue, significant financial hardship · Checked
All 6 retirement guides

Housing

Explainer2 min
A shorter fix costs less today and asks you to roll the dice sooner. Here is the arithmetic behind that trade, and the question worth asking before you pick.
Guide2 min
Three separate tests sit between you and a mortgage, and the one people talk about is not always the one that limits the borrowing.
Explainer2 min
Changing frequency recalculates the payment. Paying half the monthly amount each fortnight adds extra payments. The calculator example separates the two.
Guide2 min
Three years of membership opens the door. What you can withdraw, what must stay, and whose letter you need if you have owned before.
All 11 housing guides

Saving and banking

Explainer4 min
Every managed fund lodges a standardised return figure. The standard is real, and the basis it is calculated on is not yours.
Explainer2 min
The scheme protects eligible deposits if a deposit taker fails, with a limit shared across protected accounts held by the same depositor at that institution.
Explainer2 min
The OCR is the Reserve Bank’s main monetary policy tool; banks set their own mortgage and deposit rates in response to wider conditions.
Source: Reserve Bank, official cash rate · Checked
All 3 saving and banking guides

Benefits and family

Explainer4 min
Best Start, Family Tax Credit, In-Work Tax Credit and Minimum Family Tax Credit each have different eligibility and abatement rules.
Explainer2 min
Paid parental leave replaces qualifying income up to a published weekly cap, with a payment period separate from workplace leave rights.
Source: Inland Revenue, employee parental leave payments · Checked
Explainer2 min
Best Start supports qualifying families during a child's early years, with first-year income testing determined by the child's birth date.
Source: Inland Revenue, Best Start · Checked
Explainer2 min
Winter Energy Payment adds seasonal heating support to specified benefits and pensions, with automatic payments during the winter period.
Source: Work and Income, Winter Energy Payment · Checked
All 16 benefits and family guides

Work and pay

Explainer2 min
It is on every payslip, it is not income tax, and it stops being charged above a set income. Here is what it is and why it is separate.
Source: Inland Revenue and ACC published levy rates · Checked
Guide2 min
The repayment rules change completely the moment you become overseas-based, and the change is not in your favour.
Explainer2 min
A threshold, a rate, and a tax code are the three things that decide what leaves your pay. Here is how they fit together.
Explainer2 min
The minimum wage has separate adult, starting-out and training categories, with current rates stated before tax and lawful deductions.
All 5 work and pay guides
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