September marks the return of routines and the urgency of financial tasks ignored during August. This year, genuine changes are coming in autumn, alongside deadlines and eligibility checks that could affect what you pay or receive over winter. Here are the checks worth making now.
Energy bills and VAT changes from October
Energy costs change again from October 1. Rather than focusing only on the headline Ofgem price cap figure, which is not a maximum annual bill, check the price per unit of gas and electricity and the standing charges. Find your latest bill and note down your electricity unit rate, gas unit rate, both daily standing charges, whether you are fixed or variable, when your deal ends and any exit fee. Compare these with the new October rates.
If you are considering a fix, compare actual unit prices rather than estimated annual savings. If you do not have a working smart meter, take a meter reading around September 30 to give your supplier an accurate figure as the new pricing period begins.
Another change on October 1 is the removal of VAT on qualifying domestic electricity. The Government estimates this will reduce the annual amount represented in the price cap by around £45 for a typical household. Your own saving depends on how much electricity you use. You should not have to apply for it, but check your first bill after the change. If you have a fixed tariff, check how your supplier is applying the change.
Winter help and pensioner payments
Check the Warm Home Discount, worth £150 towards the electricity bill of eligible households. It is separate from Winter Fuel Payment. Depending on where you live and your circumstances, people receiving certain means-tested benefits may qualify too. The system differs between England, Wales and Scotland, so check rather than relying on what happened to somebody else last winter. If money is already tight, contact your supplier about support rather than waiting for your account to fall behind.
For the 2026/27 Winter Fuel Payment, the qualifying week is September 21 to September 27, 2026. Eligible people can receive between £100 and £300, with most payments arriving automatically later in the year. There is an important income rule: if your total individual income is above £35,000, HMRC will normally recover the payment through the tax system. Individual income matters, not combined household income. If you have deferred your State Pension, haven't received Winter Fuel Payment previously or your circumstances have changed, check.
Mortgages, savings and family support
If your fixed mortgage deal ends within the next six months, find the exact end date now. Many lenders allow existing borrowers to secure a new deal several months before the current one expires. If you are moving to another lender, allow time for affordability checks, valuations and paperwork. Find out what rate your mortgage reverts to when the deal ends. Compare a product transfer from your existing lender with deals from other lenders, including arrangement fees, valuation costs and any early repayment charges. If you are worried about making payments, speak to your lender early.
For the 2026/27 tax year, the Personal Savings Allowance means basic-rate taxpayers can generally receive £1,000 of savings interest before tax is due, while higher-rate taxpayers have a £500 allowance. That is interest, not the amount in the bank. Add up what you expect to earn across all taxable savings accounts between April 6, 2026 and April 5, 2027. Interest earned inside an ISA doesn't count towards the allowance. Some savers are still leaving thousands in old accounts paying poor rates. £10,000 earning 1% produces £100 of interest over a year; the same amount earning 4% produces £400.
Parents should recheck childcare and free school meals. The expansion of free school meal eligibility in England for the 2026/27 school year means families receiving Universal Credit should check again, particularly if their children didn't qualify previously. Working parents should log into their childcare account rather than assuming everything rolls over. Eligible families may be able to use funded childcare alongside Tax-Free Childcare for additional eligible costs.
Christmas planning and a winter number
September is the point at which Christmas maths becomes genuinely useful. If you want £600 available for Christmas and you've got three monthly paydays before December, you need £200 from each pay packet. Reduce the target if needed: a £300 Christmas pot spread over roughly 13 weeks is around £23 a week; £500 is about £38.50 a week. Set up a separate pot and automate the transfer just after payday. The important bit is setting the maximum spend now.
Finally, open your bank account and look at what is due between now and Christmas. Check when your car and home insurance renew, when broadband and mobile minimum terms end, and look for introductory credit card rates expiring, savings bonuses disappearing, annual subscriptions renewing, fixed energy deals ending and mortgages approaching the end of their fixed period. Put important dates in your phone with a reminder several weeks beforehand. Think about what has changed in your household: income, childcare costs, someone moving in or out, becoming a carer, retiring or reducing hours. Changes like these can affect what you're entitled to.
After doing all of that, write down what your household will actually need each month between October and January, using your real mortgage or rent, new energy costs, food, transport, childcare, debt repayments, Christmas saving and insurance renewals. Subtract your income and any support you're entitled to. If the numbers don't work, finding that out in September gives you time to change something.
