Autumn Budget 2025: Summary of the Key Changes

On Wednesday 26 November 2025, the Chancellor introduced this year’s Budget as a plan to deliver long-term stability, setting out measures intended to support sustainable public finances in the years ahead.

The Budget confirms a range of tax and policy changes that will come into effect over the next decade. A central feature of this year’s announcement is the continued freeze on Income Tax and National Insurance thresholds until 2031, which will gradually draw more taxpayers into higher bands as earnings rise. Alongside this, increases to dividend tax, savings income tax and rental income tax will be phased in from 2026 and 2027, representing a further shift in how investment and property income is taxed.

The government also confirmed a reduction to the cash ISA allowance for under-65s, updates to capital gains reliefs, the introduction of an annual charge for higher-value residential properties from 2028, and the future move to mileage-based taxation for electric and plug-in hybrid vehicles. Additional measures have also been included, intended to modernise the tax system moving forward.

Although the measures have been presented as reflecting a broader focus on stability and long-term planning across both personal and business taxation, the full impact will vary depending on individual circumstances. Many provisions will take effect gradually over the coming years and planning ahead, where possible, will be key.

What you need to know

Please click here to read our summary of the announcements.

How can we help?

The new measures may offer opportunities or create challenges for your current financial planning. We encourage you to review the summary carefully and consider any potential impact on your affairs.

At Simmons Gainsford, we are committed to helping you navigate these updates with clarity and confidence, ensuring that you stay informed and well-positioned for any adjustments ahead.

If you have any immediate questions or would like to arrange a call, please do not hesitate to contact us.