Last updated: 16 October 2026
What happens after a Budget or Autumn Statement?
A Budget announcement doesn’t change the law on its own. Most tax measures need a Finance Bill, which Parliament debates and passes as a Finance Act, usually within a few months. Some changes take effect immediately on Budget day, such as stamp duty or anti-avoidance rules, but most start from the following 6 April. In the weeks after, HMRC publishes draft legislation, technical notes and consultations, so details can still change. For businesses, the practical step is to check which changes affect you and when they start.
The usual timeline
| Stage | When |
| Budget speech | Autumn (usually November) |
| Policy papers and tax information notes | Budget day |
| Finance Bill published | Within a few weeks |
| Royal Assent (Finance Act) | Usually by March |
| Most changes start | 6 April |
| Some changes start | Later, often April of the following year |
Changes from recent Budgets
- Dividend tax up 2 percentage points from April 2026, to 10.75% and 35.75%
- Savings and property income rates up 2 percentage points from April 2027
- Income tax thresholds frozen until April 2031
- 100% agricultural and business property relief capped at £2.5 million from April 2026
- Business asset disposal relief rising to 18% from April 2026
- Cash ISA limit cut to £12,000 for under-65s from April 2027
- Mandatory payrolling of benefits, phased in from April 2027 (cars, vans, fuel and medical benefits first, most others from April 2028)
How to respond
- List the changes that affect your income or business.
2. Note the start dates.
3. Consider timing, such as taking dividends before a rate rise.
4. Update forecasts and budgets.
5. Speak to an adviser before making large decisions.
Example
A company owner hears in a Budget that dividend tax will rise from the next April. Before 5 April, the company declares a dividend from retained profits, taxed at the old rate. This makes sense only if the company has the profits and the owner needs the cash or can reinvest it.
Can announced changes be reversed?
Yes. Measures can be amended during the Finance Bill’s progress, delayed or dropped, especially after consultation, as happened with some changes to inheritance tax relief for family businesses.
Common mistakes
- Acting on rumours before the Budget
- Assuming every change starts immediately
- Missing transitional rules
- Not reviewing pay and dividend plans
Records to keep
Keep a note of decisions taken in response to the Budget and why, to support your tax position later.
Watching for consultations
After a Budget, HMRC and the Treasury often publish consultations on how a measure will work. Businesses and advisers can respond, and the final rules may differ from the original announcement. Keeping an eye on these, or asking your accountant to, avoids planning around rules that later change.
Frequently asked questions
Is the Autumn Statement the same as a Budget?
It was a fiscal update; now the main Budget is in autumn, with a Spring Statement.
Where can I read the measures?
On gov.uk, in the Budget documents and the Overview of Tax Legislation and Rates.
Do Scottish rates change in the UK Budget?
No, the Scottish Government sets income tax rates.
When are new rates published?
Usually on Budget day.
Related: the Autumn Budget 2024, carried interest changes and where CGT is heading.
Talk to Accotax
Want this handled for you? Our team at Accotax can help with Budget planning advice. See our small business accountants service, or contact us for a free, no-obligation quote.
This page is general guidance based on HMRC rules for the 2026/27 tax year, checked against gov.uk on 16 October 2026. It is not personal advice, so speak to an accountant about your own situation.
