How to reduce food waste at home
New Zealand households waste an average $1,364 of food a year, according to the 2025 Rabobank-KiwiHarvest survey reported by Love Food Hate Waste NZ. Poor use-by tracking and over-buying drive most household food waste. Marsonya's expiry alerts and waste-rate analytics target both causes directly.
Nobody throws food away on purpose. Waste starts smaller than that: a yoghurt behind another yoghurt, spinach flattened at the bottom of the drawer, a tin pushed out of sight, an ingredient bought twice because nobody remembered the first one. Most food waste begins with forgetting — and forgetting is a solvable problem.
How much food do NZ households waste a year?
New Zealand households throw away an average of $1,364 of food a year, according to the 2025 Rabobank-KiwiHarvest survey reported by Love Food Hate Waste NZ. The figure counts only what the food cost at the checkout — not the time spent shopping for it, or the emissions from growing, transporting and landfilling food nobody ate. For a personal version of the number, the food-waste calculator turns a weekly grocery spend into an annual estimate.
Why does food actually go to waste at home?
Households rarely waste food through carelessness. The usual causes are structural: shopping without knowing what the pantry already holds, storing new groceries in front of old ones, and dates that get checked only when a smell forces the question. Each cause is a visibility problem before it is a discipline problem — which is why good intentions alone rarely fix the pattern for long.
What’s the difference between best-before and use-by dates?
A use-by date marks safety: food past a use-by date should not be eaten, even when it looks and smells fine. A best-before date marks quality: correctly stored food is often still good after the date passes. Mixing the two up causes waste in both directions — safe food binned early, and risky food kept too long. Reading the label’s exact wording is the habit that prevents both.
The full guide to use-by versus best-before dates covers the legal rules, including why fresh bread carries a baked-on date instead.
Where can you check how long specific foods keep?
Two reference pages answer the how-long questions this guide keeps pointing at: how long leftovers really last covers New Zealand Food Safety’s two-day and four-day rules — including why rice is stricter — and the food storage guide tables fridge, freezer and pantry times for common foods, every range sourced to a named authority.
How do I reduce food waste without a big lifestyle change?
- Audit before you shop. Check the pantry, fridge and freezer before writing a list, and build the week's meals around whatever needs using first.
- Put older items in front. Move earlier-dated food to the front of the shelf so the next hand takes it first — shops call the habit FIFO, first in, first out.
- Make dates visible. Keep use-by items where they can be seen, and set a reminder a few days ahead. A date only prevents waste when somebody sees it in time.
- Plan one use-it-up meal a week. One flexible dinner built from whatever is closest to expiring clears the backlog before the bin does.
How does Marsonya help reduce food waste?
- ShippedExpiry tracking
- ShippedExpiry-date scanning— the camera reads printed use-by and best-before dates and files them automatically
- ShippedExpiry notifications— alerts fire on the device a few days ahead; a use-by item is never silently skipped
- ShippedWaste-rate analytics— consumed vs expired vs wasted, tracked as a rate you can actually move
What else do people ask about food waste?
How much money does reducing food waste actually save?
Love Food Hate Waste NZ reports the average New Zealand household throws away $1,364 of food a year (2025 Rabobank-KiwiHarvest survey). A household that halves its waste keeps roughly $680 of that. Savings scale with household size and shopping habits rather than with any single trick.
Is a best-before date the same as a use-by date?
No. A use-by date is about safety — food past a use-by date should not be eaten. A best-before date is about quality — correctly stored food is often fine after it. Marsonya's expiry scanner records which kind it read, so safety dates can be treated with more urgency than quality dates.
Does tracking expiry dates really change anything?
A date on a label only helps when somebody sees it in time. Most binned food sat visible for weeks before expiring — the date was missed, not unknown. A reminder arriving days before a use-by date turns the same information into a decision: cook the item, freeze the item, or share it.
Do I have to log every single grocery item?
No. Barcode scanning adds packaged items in seconds, and manual entry covers loose produce and leftovers. Coverage matters more than completeness — tracking the perishables alone catches the items most at risk of expiring unseen.