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How to cut household bills without cutting anything that matters

Four annual contracts hold most of the money you could save. They renew quietly, which is precisely why they cost what they do.

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The short answer

Most of the available saving sits in four annual contracts: car insurance, home insurance, broadband and mobile, and your energy tariff. Auto-renewal is where the money goes. Set a reminder three weeks before each renewal, and check benefit entitlement, marriage allowance and your council tax band while you are at it.

4 contractsWhere most of the saving sits
£100 to £400Illustrative car insurance saving
3 weeksSet the renewal reminder this far ahead
1991The year English and Scottish council tax bands were valued
What is on this page
  1. The four bills worth an hour of your time
  2. Money you may already be owed
  3. Savings that are not savings
  4. Making the saving stick

The four bills worth an hour of your time

Most saving advice targets small, frequent spending. The money is in four large annual contracts that renew without you looking.

Bill Typical annual saving How long it takes
Car insurance £100 to £400 30 minutes at renewal
Home insurance £50 to £200 20 minutes at renewal
Broadband and mobile £100 to £300 One phone call each
Energy tariff Varies with the market 20 minutes

Illustrative ranges only. The saving depends heavily on how long you have been auto-renewing.

Auto-renewal is where the money goes. Insurers price new customers keenly and let existing ones drift upward. Setting a calendar reminder three weeks before each renewal is the whole technique.

Money you may already be owed

  • Benefit entitlement, which large numbers of eligible households never claim
  • Marriage allowance, if one partner earns under the personal allowance
  • Council tax band, which can be wrong on properties valued in 1991
  • Council tax discounts for single occupancy, students and severe mental impairment
  • The Warm Home Discount and other energy support schemes
  • Water bill social tariffs, offered by most suppliers and rarely advertised

MoneyHelper has a free benefits calculator, and Citizens Advice will check entitlement with you. Both are free and neither will try to sell you anything.

Savings that are not savings

Cancelling insurance you needCutting buildings insurance or life cover to save £20 a month is not a saving. It is moving a risk onto yourself.
Long finance on a shorter productA five year agreement on a four year phone or a five year car costs more than the monthly figure suggests.
Consolidating without changing anythingA lower monthly payment over a longer term usually means more total interest.
Dropping the pension for a small gainIf your employer matches, cancelling contributions loses more than the contribution itself.

Want this checked against your own situation?

Send us the figures and we will tell you what they mean. If it is not ours to advise on, we will say who should.

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Free debt advice is available from StepChange, National Debtline and Citizens Advice. We are not paid to send you there. Talking to us costs nothing either, and there is no fee to you for anything we arrange.

Making the saving stick

1

Do the four big bills in one sitting

Two hours, once a year, beats a year of small economies.

2

Move the saving immediately

Standing order the exact monthly amount into savings the same week.

3

Diarise every renewal date

Three weeks before, every year. This is the habit that pays.

4

Re-check entitlement after any change

New baby, hours cut, a partner moving out. All change what you can claim.

Where you stand

Worth an hour if
  • You have auto-renewed any insurance for two years or more
  • You have never checked benefit entitlement
  • You are out of contract on broadband or mobile
  • Your household size or income has changed recently
Do not cut
  • Buildings insurance, which a lender requires
  • Life or income cover your household relies on
  • Pension contributions your employer matches
  • Anything where the saving just moves a cost forward

Check broadband before you make an offer

Broadband speeds can vary street by street, so check the exact address before you commit. Ofcom's free checker shows which broadband speeds and mobile coverage are available at any UK property.

Want all your bills in one?

We can introduce you to a specialist who can combine your mobile, broadband and utilities into one bill. There's no fee for the introduction.

We don't provide these services ourselves. Switching household bills is not a regulated financial service, so FCA protections and the Financial Ombudsman do not apply. We'll only pass your details to the specialist if you ask us to. See our privacy notice.

Questions people actually ask

What is the quickest way to cut household bills?
Shop around at renewal on car insurance, home insurance, broadband and energy. Those four contracts hold most of the available saving, and auto-renewal is where the money quietly goes.
Can I get my council tax band changed?
Sometimes. In England and Scotland, bands were set on 1991 values and errors exist. Check what similar neighbouring properties are in before you challenge, because a review can move a band either way.
Is switching energy worth it?
It depends on the market at the time. Check whether a fixed deal beats the price cap for your usage, and check any exit fees before you commit.
What benefits might I be missing?
A large amount of UK benefit entitlement goes unclaimed each year. A free benefits calculator or a Citizens Advice appointment will tell you in under an hour.
Should I cancel my insurance to save money?
Not the cover you would need. Reduce the price by shopping around or adjusting the excess rather than removing protection you rely on.
How do I check broadband speed at a property?
Use Ofcom's free broadband and mobile checker at checker.ofcom.org.uk. Enter the property's postcode and choose the address to see which broadband speeds and mobile coverage are available before you make an offer.

Where to go next

Budgeting and debtThe four numbers behind the bills.Build an emergency fundWhere the saving should go.Simplify my billsOur own service for this.Cannot pay a bill?If cutting is not enough.Emergency savingsThe target to aim at.Debt help explainedIf the gap is structural.
Where these figures come from

Figures checked on 1 September 2026 and correct for the 2026/27 tax year. Rates change, so check the source before you act on a number.

Written by Ben Tomlin. We do not give regulated debt advice and we are not paid to refer you anywhere for it. The charities named on this page are free.

Last reviewed September 2026.

Cut the bills and want the saving to do something?

We can look at whether the household is properly covered, which is the part we handle ourselves.

Start a conversation

Prefer WhatsApp? Message us there. We are open Monday to Saturday, 9am to 8pm.

Free debt advice is available from StepChange, National Debtline and Citizens Advice. We are not paid to send you there. Talking to us costs nothing either, and there is no fee to you for anything we arrange.

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