What the Next Autumn Budget (16 November 2026) Could Mean for Your ISA and Pension

The next Autumn Budget is scheduled for Monday 16 November 2026. It’s tempting to try to guess what the new Chancellor will announce, but the more useful exercise - and the one this article focuses on - is understanding what’s already locked in from previous Budgets and due to land around this time, since several changes are now confirmed law rather than speculation.

What’s already confirmed, regardless of what happens on 16 November

The 2025 Autumn Budget (26 November 2025) and the legislation that followed it already set out several multi-year changes. None of these need a new Budget announcement to take effect - they’re already law:

• From 6 April 2027: the Cash ISA allowance for under-65s is cut from £20,000 to £12,000 (the overall £20,000 ISA allowance is unchanged; the remaining £8,000 must go into stocks and shares or innovative finance ISAs).
• From 6 April 2027: tax on savings and property income rises by 2 percentage points across all bands - to 22% (basic rate), 42% (higher rate), and 47% (additional rate).
• From 6 April 2027: most unused pension funds and pension death benefits are brought into the value of your estate for Inheritance Tax purposes, under the Finance Act 2026 - a change worth factoring into which pot you draw down first in retirement, pension or ISA.
• From 6 April 2029: salary-sacrificed pension contributions above £2,000 a year lose their National Insurance exemption.
• Income tax thresholds (Personal Allowance, higher-rate and additional-rate thresholds) remain frozen until April 2031.

This means a significant amount of change is already scheduled for April 2027 alone - the Cash ISA cut, the savings and property tax rise, and the pension IHT change all land within the same tax year, regardless of what’s said at the November 2026 Budget.

What’s genuinely under review, without a decided outcome

A small number of areas have been flagged for consultation or review, without a specific policy decided yet as of mid-2026:

• The Lifetime ISA. The government indicated a review of the Lifetime ISA, including a possible simpler replacement product aimed at first-time buyers, with a consultation expected in 2026. No decision has been confirmed at the time of writing.
• The Pensions Commission, examining retirement adequacy more broadly, particularly for the self-employed and lower earners, is ongoing and isn’t expected to report conclusions that feed into policy immediately.

Why we’re not going to guess what’s new on 16 November 2026

Every Budget generates months of media speculation - cuts to pension tax relief, changes to tax-free cash, new wealth taxes, and so on - and in recent Budgets, the large majority of speculated measures didn’t happen. Treating rumours as decided policy leads people into unnecessary, sometimes costly, pre-emptive decisions (like rushing to withdraw tax-free cash from a pension) based on changes that never materialise. We’ll cover any genuinely new announcements after Budget day, once they’re confirmed rather than speculated.

What’s actually worth doing before 16 November 2026

• Use this tax year’s ISA allowance if you haven’t already - none of the confirmed 2027 changes affect the current 2026/27 tax year’s £20,000 allowance.
• Review pension contributions and carry forward while current rules are in place - see our article on using three years of unused annual allowance.
• Don’t make irreversible decisions based on rumours - such as withdrawing pension tax-free cash early ‘just in case’ a change is announced that may not happen.

The bottom line

There’s already a substantial, confirmed set of changes landing in April 2027, independent of whatever is announced on 16 November 2026. The most productive use of the run-up to Budget day is making full use of this year’s allowances under the current rules, not trying to second-guess a Budget that hasn’t happened yet.