UK Money: ISAs, Pensions, Stamp Duty and Bills — 2026-09-14

Top developments

State Pension Triple Lock Faces Scrutiny Ahead of Budget

The Institute for Fiscal Studies (IFS) has warned that the state pension triple lock will add £20bn to annual costs by 2050, prompting major business groups to urge Prime Minister Andy Burnham and Chancellor John Healey to scrap the policy. Recent analysis indicates the triple lock is forecast to push up Department for Work and Pensions (DWP) spending by £600 million a year, complicating the government's fiscal plans for the upcoming Autumn Budget on October 28. The policy, which guarantees the state pension rises by the highest of inflation, average earnings, or 2.5%, is increasingly viewed as unsustainable by economists, though political backlash remains a significant deterrent for any party considering its removal.

First-Time Buyers Pay £307m Extra in Stamp Duty

First-time buyers have paid an estimated £307m more in Stamp Duty Land Tax (SDLT) since the temporary holiday ended and the nil-rate threshold was reduced from £425,000 to £300,000 in April 2025. This increase highlights the ongoing financial pressure on those entering the property market, particularly as mortgage rates have seen upward pressure due to inflation concerns. The current rules mean that while no SDLT is paid on the first £300,000 for eligible first-time buyers, any amount above this up to £500,000 is taxed at 5%, significantly impacting deposit availability.

Energy Price Cap Rises to £1,723 for Winter Quarter

Ofgem has confirmed that the energy price cap for a typical household paying by Direct Debit will rise to £1,723 per year effective October 1, 2026, until December 31, 2026. This represents an increase from the previous cap of £1,663 for the July–September period. Approximately 11 million households are currently on fixed tariffs and will be unaffected by this immediate change, but those on variable tariffs will see their bills adjust accordingly.

1 sources

gov.uk

Pension schemes rates - GOV.UK

Local view

Polish-language media outlets serving the UK migrant community are focusing heavily on the potential tax hikes and cost-of-living impacts. bham.pl reports that over 120 organizations are campaigning to remove "hidden taxes" from energy bills, arguing that households could save up to £250 annually if these levies were scrapped. Additionally, Polish Express notes that while Prime Minister Burnham has not ruled out income tax or National Insurance increases, many workers may not see immediate changes to their payslips if such measures are deferred to later legislation.

Context & numbers

• State Pension Increase: The state pension is expected to rise by approximately £515 annually from April 2027 under the current triple lock mechanism.
• Mortgage Rates: Average mortgage rates have climbed to 6.82% as of September 11, 2026, driven by inflation concerns affecting Treasury yields.
• ISA Reforms: Cash held within Stocks and Shares ISAs will be subject to a 22% charge on interest earned starting April 6, 2027, as part of reforms to prevent investment ISAs being used as cash workarounds.
• Budget Date: The Autumn Budget is scheduled for October 28, 2026, where further details on tax thresholds and savings allowances are expected.

On the radar

• October 28, 2026: Chancellor John Healey will deliver the Autumn Budget, with speculation mounting regarding changes to Capital Gains Tax (CGT), inheritance tax on pensions, and income tax bands.
• HMRC Pension Guidance: HMRC has published technical notes on how unused pension funds will be treated for inheritance tax purposes for deaths on or after April 6, 2027, signaling stricter enforcement of pension IHT rules.