How to spend less on groceries without clipping a single coupon

The money you're already throwing away

Let's start with the number nobody enjoys. According to the UN Environment Programme's Food Waste Index Report 2024, households waste roughly 79 kg of food per person per year, and homes account for about 60% of all food waste. Whatever your bill is, a slice of it is being paid for food that ends up in the bin. Shrinking that slice is the cheapest saving there is, because you don't have to change what you eat. Only what you buy.

1. One list, and only what's on it

Everything in a supermarket is arranged to make you pick up things you didn't come for. The written list is the oldest defence and still the best one. The rule is not "make a list". Everyone makes a list. The rule is buy only what's on the list, and if something isn't on it, it waits until next week's plan. Most impulse buys don't survive a seven-day cooling-off period. The fancy crisps will cope.

2. Fewer trips

Every extra visit is another stroll past the bakery, another "while I'm here". One planned shop a week, plus at most one top-up for fresh things, is a realistic target for most households. If you currently pop in three or four times a week, this alone moves the bill more than any loyalty card ever will.

3. Buy for a plan, not for a mood

A list written from a meal plan is short and specific: the ingredients for seven dinners and nothing else. A list written from "ooh, that looks nice" is long and vague, and a third of it goes soft in the drawer. If you haven't tried planning meals yet, our meal-planning guide shows a 15-minute version. Planning the week around what's already in the fridge is where the waste, and the money, drops fastest.

4. Know what things cost

Hardly anyone could tell you what they paid for olive oil last month. Without a reference point you can't spot a real offer from a fake one, and you can't see the bill creeping up on you. Keep a note of the price of your twenty or so regulars. It takes one shop to build and pays off every week after: you'll notice when a staple jumps, and you'll know which store is genuinely cheaper for the things you buy, rather than the things on the billboard.

5. Split the shop by store, on purpose

Nobody has time to visit four shops for one week's food. But one big supermarket for the staples and one cheaper or better place for veg, meat or bread is usually worth it, as long as the list is already sorted by store so each stop is quick. The trick is deciding where each item comes from while writing the list, not while standing in the wrong aisle with a slowly melting ice cream.

6. Eat what you bought before buying more

Plan a "use it up" night every week, and shop the freezer and the cupboard before the plan is written. Half the value of a plan is that it makes you look at what's already there. Bought food that gets eaten is a saving. Bought food that gets replaced is a loss twice over, and the bin doesn't even say thank you.

The cheapest item in your basket is the one you didn't need to put in it. The second cheapest is the one already sitting at home.

If more than one person pays for the shop, the other half of this is agreeing who covers what before it becomes a tally in somebody's head: how to split money without keeping score.

What this looks like after a month

• One shop a week, list in hand, no wandering.
• A shorter list, because it's built from a plan rather than a hunch.
• An emptier bin, because the plan started with what was in the fridge.
• A running price list, so you actually know whether you're saving or just feeling thrifty.

None of it needs a coupon, a warehouse membership or a spreadsheet. It needs fifteen minutes on a Sunday and the nerve to walk past the fancy crisps.