The Autumn Budget 2026 has brought greater clarity to the London property market, but for landlords, it also introduces further financial considerations.
With rental income tax set to rise again, understanding the impact on property investment and long-term profitability has become increasingly important
While the Government has left Stamp Duty and Capital Gains Tax on property unchanged, the additional tax burden on rental income raises important questions about the future of buy-to-let investment and rental housing supply.
For landlords across Prime Central London, the focus is now on protecting investment returns, reviewing property performance and planning confidently for the years ahead.
Rental Income Tax: A Further Increase from April 2027
One of the most significant announcements for landlords is a further two-percentage-point increase in the income tax rates applied to property income.
From 6 April 2027, the new rates for affected individual landlords in England, Wales and Northern Ireland will be:
| Income tax band | Current rate | From April 2027 |
| Basic rate | 20% | 24% |
| Higher rate | 40% | 44% |
| Additional rate | 45% | 49% |
The new rates represent a total four-percentage-point increase from current levels, incorporating the rise previously announced in 2025.
For landlords holding residential property personally, particularly those with mortgages or multiple investments, the changes could reduce after-tax returns.
The actual impact will depend on individual circumstances, including allowable expenses, financing arrangements and available tax reliefs.
Landlords should consult their accountants to understand how the new rates will affect their specific financial position.
Stamp Duty and Capital Gains Tax Remain Unchanged
There was some welcome certainty for property owners and investors, with no general changes announced to Stamp Duty Land Tax rates or Capital Gains Tax on residential property disposals.
For landlords considering selling an investment property, or investors exploring new acquisitions, this removes some of the uncertainty surrounding potential immediate tax changes.
However, existing acquisition costs and tax liabilities remain important considerations, particularly in London's higher-value property market.
The previously announced High Value Council Tax Surcharge on properties worth more than £2 million is also proceeding from April 2028, introducing an additional annual ownership cost for affected properties.
What Does the Budget Mean for Buy-to-Let Investment?
London continues to offer opportunities for long-term residential investment, supported by its established rental market and appeal to domestic and international tenants.
However, the financial viability of buy-to-let property increasingly depends on careful management of income and expenditure.
Higher taxation, mortgage costs, maintenance requirements and regulatory obligations can all influence net rental returns.
For some landlords, the Budget may prompt a reassessment of whether to retain, improve or sell existing properties.
For others, it may reinforce the importance of maximising rental performance, minimising unnecessary void periods and ensuring properties remain competitive.
Rather than making decisions based on taxation alone, landlords should consider the overall performance and longer-term prospects of their investments.
Could Higher Landlord Taxes Affect London's Rental Supply?
The availability of quality rental accommodation remains a significant consideration across London.
Private landlords play an important role in meeting housing demand in established residential central London neighbourhoods.
Further financial pressures could discourage some landlords from expanding their portfolios, while others may consider leaving the rental sector.
If investment slows or rental properties are withdrawn from the market, the availability of homes for tenants could become more constrained.
Although strong rental demand may support rental values, landlords must continue to price properties realistically, taking account of local market conditions, property quality and affordability.
A sustainable rental market ultimately depends on maintaining a balance between tenant protection and the financial viability of responsible property investment.
What Should London Landlords Do Following the Budget?
The Budget provides an opportunity for landlords to review their existing investments and prepare for the changes ahead.
Key considerations include:
1. Review rental profitability: Assess rental income against mortgage payments, taxation, maintenance, management costs and other expenditure.
2. Reassess rental values: Ensure current rents remain competitive and reflect local market conditions, while complying with applicable rent increase rules.
3. Plan for the April 2027 tax changes: Speak with a qualified accountant about the implications for future rental income.
4. Review property performance: Consider whether planned improvements, maintenance or changes to management arrangements could support longer-term returns.
5. Evaluate investment objectives: Determine whether retaining, improving or selling a property remains consistent with your financial goals.
Taking a proactive approach can help landlords make informed decisions rather than reacting to changing market conditions.
How Grange London Can Help
At Grange London, we understand that successful property investment requires more than simply finding a tenant.
Our lettings and property management services are designed to help landlords navigate London's evolving rental market while protecting the value and performance of their properties.
From providing informed rental valuations and effective property marketing to tenant selection, tenancy administration, compliance coordination and ongoing property management, our team offers practical support throughout the letting process.
We work closely with landlords to minimise unnecessary void periods, maintain property standards and support sustainable rental income.
Looking Ahead
The Autumn Budget 2026 provides greater certainty around some aspects of property taxation, but also reinforces the financial challenges facing private landlords.
For London's property owners, the priority should be understanding how the changes affect their individual circumstances and ensuring their investments remain appropriately managed.
Reviewing your London rental property or considering your next investment decision?
Contact Grange London to arrange a rental valuation or discuss how our lettings and property management services can support your property investment.
This article is intended for general information only and does not constitute tax, legal or financial advice. Landlords should seek professional advice relevant to their individual circumstances.
Sources verified: HM Treasury's Budget 2026 and Budget tax legislation and rates, published 28 October 2026.
