The 2025 Autumn Budget delivered by Rachel Reeves brings a raft of changes that will affect homeowners, savers, investors, landlords and business owners alike. 

Some changes are headline grabbing with others more subtle. However, together they create a landscape that may call for a rethink of long term financial plans.

Housing & Property: What’s New for Homeowners and Landlords

New “Mansion Tax” on High-Value Homes

The Budget confirmed the introduction of a “High Value Council Tax Surcharge” on properties worth more than £2 million in England. Owners of such homes will face an annual surcharge (tiered based on value) starting April 2028. 

This change is likely to impact the upper end of the market disproportionately. 

Increased Tax on Property Income and Rental Earnings
From April 2027 the government will raise tax on income from property (rentals) and other asset-based income. 

Basic, higher and additional rates for property income will go up by 2 percentage points. This pushes them to 22%, 42% and 47% respectively.

For landlords, this signals a tougher environment: tighter margins, increased tax burden and potentially lower net returns.

Over time, this could reduce rental supply and increase pressure on rents, especially in areas where demand remains strong.

What this means for ordinary homeowners & buyers
Interestingly, Stamp Duty thresholds remain unchanged and there were no structural reductions. This means that first time buyers and ordinary home buyers don’t face immediate duty hikes.

However, the broader push on “wealth taxes” and increased tax on rental income is likely to influence investor behaviour. That could feed through to supply in the rental market with consequences for affordability and demand for owner-occupation.

Savings, Investments & Income – What’s Changing for Savers and Investors?

Cash ISA Allowance Reduced for Under-65s
From April 2027, the annual cash ISA allowance for under 65s will be cut from £20,000 to £12,000 per year. For over 65s, the £20,000 allowance remains unchanged. 

This reduces the shelter available for cash savings. With interest rates still higher than pre-pandemic levels, this may push savers toward riskier investments (stocks, funds, pensions) if they want to maintain tax efficient returns.

Higher Taxes on Savings, Rental & Dividend Income
The Budget confirmed that from April 2027 income tax on savings interest, rental income and dividend income will increase by 2 percentage points across all bands.

This diminishes the relative tax advantage previously enjoyed by passive income streams compared with earned income. This is something that both investors and retirees who rely on investment or rental returns need to plan for now.

In addition, many small business owners pay themselves by way dividends from their businesses. For some, this could be a trigger to review their tax optimisation strategies to ensure they are fit for purpose.

Increased Value for Tax-Efficient Wrappers
Given the reductions in cash-savings allowances and increased taxation on unearned income, wraps such as ISAs (stocks & shares), pensions, and other long-term, tax-efficient vehicles may become more attractive. 

For clients who value capital preservation, stability or long term growth, reviewing investment strategy in light of these changes should be considered.

What This Means for You – Easy Street View

The Autumn 2025 Budget doesn’t reshape the tax system overnight. However, it slowly and quietly raises the financial stakes in several key areas.

We believe the following considerations are important:

• For homeowners and prospective buyers: if you’re in or considering property, aim for realistic valuations, especially if the property is high value or bought as an investment.
  
• For savers and investors: cash savings alone look less attractive over the long term. Considering tax efficient wrappers (ISAs, pensions) or diversified investment strategies could be the right approach, especially if you rely on returns rather than income.
  
• For landlords and property investors: rising taxes on rental income and stricter rules for high-value properties mean it is time to re-assess yield assumptions, holding periods and exit strategies. For those who hold (or are considering buying) investment property in their own names, seeking advice as to whether purchasing with a limited company / SPV could be worth considering.
  
• For business owners, professionals and entreprenuers: you may find that reinvesting in your business, or using corporate structures and tax-efficient planning, delivers better net returns than passive rental or savings income.

If you’d like to review how these changes might affect you, we’re here to help.

Information correct at time of writing – November 2025.