Buy-to-Let vs Savings: Which Gives Better Returns?
For UK investors with capital to deploy, the choice between buy-to-let property and cash savings has never been more nuanced. Higher mortgage rates have compressed landlord margins, while savings accounts and ISAs offer their best returns in over a decade. Meanwhile, tax changes under Section 24 have fundamentally altered the mathematics of leveraged property investment. This guide compares both options honestly, covering yields, tax treatment, risk, and liquidity so you can decide which suits your financial situation.
Current Buy-to-Let Yields in the UK
Gross rental yields in the UK vary significantly by region. In 2026, typical gross yields are: Northern England and Scotland: 6-8%. Cities like Liverpool, Manchester, Glasgow, and Sunderland consistently deliver the highest gross yields, driven by relatively low property prices and strong rental demand. Midlands and Wales: 5-7%. Birmingham, Nottingham, and Cardiff offer a middle ground between yield and capital growth potential. London and the South East: 3-5%. High property prices compress yields despite premium rents. Central London yields can drop below 3%. However, gross yield is not what you take home. After mortgage interest, maintenance (budget 10-15% of rent), void periods (4-8 weeks per year on average), letting agent fees (8-12% of rent), landlord insurance, and safety compliance costs, net yield before tax typically falls to 2-4% for leveraged investors. Cash buyers fare better at 4-6% net.
ISA and Savings Account Rates
The savings landscape has transformed since the Bank of England raised base rates. In 2026, competitive rates include: Easy-access savings accounts: 4.0-4.5% AER. Fully liquid with FSCS protection up to £85,000 per institution. Fixed-rate bonds (1-2 years): 4.5-5.0% AER. Higher rates in exchange for locking money away. Early withdrawal penalties apply. Cash ISAs: 4.0-4.7% AER. All interest is tax-free regardless of your income tax band. The annual ISA allowance is £20,000. Stocks and shares ISAs: Historical average returns of 7-10% per year over the long term, though with significant short-term volatility. All gains and dividends within the ISA wrapper are tax-free. For a basic-rate taxpayer with £50,000 to invest, a 4.5% savings account generates £2,250 per year before tax (£1,800 after the Personal Savings Allowance of £1,000 is exceeded). The same amount in a Cash ISA generates £2,250 entirely tax-free.
Tax Implications: Section 24 and Beyond
Tax is where buy-to-let has lost much of its appeal for higher-rate taxpayers. Under Section 24 (fully phased in since April 2020), landlords can no longer deduct mortgage interest from rental income before calculating tax. Instead, they receive a basic-rate (20%) tax credit on the interest paid. For a higher-rate (40%) taxpayer with £12,000 annual rent and £6,000 annual mortgage interest: the full £12,000 is taxed at 40% (£4,800 tax), then a 20% credit on £6,000 interest (£1,200) is applied, giving a net tax bill of £3,600. Before Section 24, only £6,000 profit would have been taxed at 40% (£2,400). That is £1,200 per year more in tax. Capital gains tax on property disposals is charged at 18% (basic rate) or 24% (higher rate) after the annual exempt amount. The annual CGT allowance has been reduced to £3,000. By contrast, ISA returns are entirely free of income tax and capital gains tax. No tax returns to file, no Section 24 complications, no CGT on disposal. For higher-rate taxpayers especially, the ISA wrapper provides a significant structural advantage.
Liquidity and Flexibility
Property is fundamentally illiquid. Selling a buy-to-let takes 3-6 months on average, with estate agent fees (1-3%), solicitor costs (£1,000-£2,000), and potential CGT liability on exit. If you need cash quickly, property cannot deliver it. Savings accounts and ISAs offer near-instant access (easy-access accounts) or predictable access (fixed-term bonds). There are no transaction costs to withdraw, no agents to instruct, and no tax surprises. This liquidity difference matters most in emergencies. A landlord facing an unexpected expense cannot quickly liquidate a portion of a property -- it is all or nothing. A saver can withdraw exactly what they need, when they need it. However, property does offer one form of flexibility that savings cannot: leverage. A 75% loan-to-value mortgage lets you control a £200,000 asset with £50,000 of your own money. If the property appreciates by 3% per year, that is £6,000 annual growth on a £50,000 investment -- a 12% return on equity from capital growth alone. Leverage amplifies returns in rising markets but equally amplifies losses if prices fall.
Risk Profile Comparison
Buy-to-let risks include: property price falls (UK house prices have historically fallen 15-20% in downturns), void periods with no rental income, problem tenants, unexpected maintenance costs (boiler replacement, roof repairs), regulatory changes (energy efficiency requirements, licensing), and interest rate risk on variable-rate mortgages. Savings account risks are minimal: inflation eroding purchasing power is the primary concern. If your savings rate is below inflation, you are losing money in real terms. FSCS protection means deposits up to £85,000 per institution are government-guaranteed even if the bank fails. Stocks and shares ISA risks sit between the two: market volatility can cause short-term losses of 20-40%, but diversified long-term investors have historically been rewarded with inflation-beating returns. The honest answer is that neither option is universally "better." Buy-to-let suits investors who want a tangible asset, are comfortable with leverage, have time to manage property (or money to pay agents), and are basic-rate taxpayers. Savings and ISAs suit those who value liquidity, simplicity, tax efficiency, and predictable returns.