Over the past 25 years, global equities have returned roughly 7–10% annually, while UK property has averaged 3–5% in capital growth plus another 3–5% in rental yield. That headline comparison looks close, but it hides a world of difference in costs, effort, and risk. I’ve spent years watching people weigh these two options, and the same confusion keeps coming up: which one actually builds more wealth over time?
The problem is that most people compare the wrong numbers. They look at property’s gross returns — the headline growth and rent — without subtracting the costs that quietly eat away at profits. Meanwhile, stock market returns are usually quoted after all fees. That mismatch leads to bad decisions. Here’s what you actually need to know.
How leverage changes the property maths
Leverage is the single biggest reason property can outperform stocks on paper. When you buy a £250,000 property with a £62,500 deposit (25% down, standard for buy-to-let), you control an asset worth four times your cash. If the property rises 5% in a year, that £12,500 gain represents a 20% return on your deposit. That’s the argument for property in a rising market, and it’s a strong one.
But leverage works in reverse too. A 5% price fall means you lose 20% of your deposit. A 25% decline — which happened in many UK regions during the 2008 crash — would wipe it out entirely. And while you’re waiting for prices to recover, you’re still paying mortgage interest. At current rates of 4–5%, the interest on that £187,500 mortgage is roughly £7,500–£9,375 per year, whether the property is occupied or not. That’s a fixed cost that doesn’t care about your investment thesis.
What I’d do: never count on leverage as your primary return driver. It’s a multiplier, not a source of value. If the underlying asset doesn’t grow, leverage just accelerates the pain. If you’re considering property, look at whether UK property still offers reliable long-term growth before you factor in any mortgage maths.
Why the costs of property are so easy to underestimate
Here’s where the comparison gets uncomfortable. A global index fund in a Stocks & Shares ISA has total ongoing costs of 0.1–0.2% per year. That’s it. No boiler repairs, no tenant chasing, no void periods, no stamp duty. Property, by contrast, comes with a long list of unavoidable expenses.
On a £250,000 buy-to-let, you’re looking at roughly £10,000 in stamp duty (the 3% surcharge on additional properties), £2,000–£3,500 in solicitor and survey fees, and £1,000–£2,000 for a mortgage arrangement fee before you even own the place. Then every year: £2,000–£4,000 in maintenance and repairs, 8–15% of rent to a letting agent if you use one, £200–£500 for landlord insurance, and legally required certificates like EPC, gas safety, and EICR. On a property renting for £1,000 per month (£12,000 gross annually), these ongoing costs can easily consume 30–50% of the rental income. Add mortgage interest on top, and many buy-to-let investors find their net cash yield is 2–3% at best — sometimes negative in the early years.
What I’d do: before buying any investment property, build a realistic spreadsheet that includes every cost listed above. Assume one void month per year and one major repair every three years. If the net yield still looks attractive after those assumptions, you’re in a strong position. If it doesn’t, the numbers are telling you something.
If you’re already a landlord and these costs are eating into your returns, comparing your actual rental yield against what you’d earn from a simple index fund can be a sobering exercise.
Where people go wrong comparing the two
Comparing gross property returns to net stock returns
This is the most common mistake I see. Property returns are almost always quoted before costs — the 5% capital growth and 5% rental yield are gross figures. Stock returns, by contrast, are quoted after the fund’s ongoing charge has been deducted. So you’re comparing a pre-cost number with a post-cost number, and the gap is wider than it looks. When you strip out property’s real costs — maintenance, voids, agent fees, mortgage interest — the net return often falls below what a simple global tracker delivers with zero effort.
Ignoring liquidity risk
Stocks can be sold in seconds, with cash in your account within 1–3 days. A property sale takes 3–6 months, and if you need to sell quickly — because of a job loss, divorce, or medical emergency — you may have to accept a below-market price. That lack of liquidity is a real risk that doesn’t show up in any return calculation. If you might need access to your money within five years, property is the wrong choice.
Underestimating the concentration risk
One property in one location is the opposite of diversification. A single flood, a bad tenant, or a local economic downturn can wipe out years of returns. A global index fund, by contrast, holds thousands of companies across dozens of countries. If one sector or region struggles, the rest carries on. That diversification is free — you get it automatically from the moment you buy your first fund.
Forgetting that property is a job
Buy-to-let is not passive income. It’s a part-time job that involves tenant management, compliance with ever-changing regulations, arranging repairs, and dealing with void periods. If you use a letting agent, you lose 8–15% of your rent. If you don’t, you’re on call 24/7. A global index fund requires no time at all. That time has a value, and most people don’t account for it.
What I’d do: if you’re drawn to property because you like the idea of a tangible asset, consider a Real Estate Investment Trust (REIT) instead. It gives you property exposure through the stock market — no deposit, no tenants, no boiler repairs — and you can hold it inside an ISA for tax-free returns. It’s the middle ground most people overlook.
→ Scroll right to see all columns
| Factor | Stocks & Funds | Buy-to-Let Property |
|---|---|---|
| Typical return | 7–10% (after costs) | 3–5% growth + 3–5% rent (before costs) |
| Minimum investment | From £1 | £30,000+ deposit |
| Liquidity | High (sell in seconds) | Very low (3–6 months to sell) |
| Ongoing costs | 0.1–0.2% per year | 30–50% of rental income |
| Tax efficiency | ISA = completely tax-free | Income tax, CGT, stamp duty |
| Effort required | Very low | High (management, tenants, compliance) |
Writing about topics like this takes real time and research. If you buy something through an Amazon link on this page, I may earn a small commission — at no extra cost to you. It’s one of the things that makes it possible to keep BritWealth free to read. I only link to products that are genuinely relevant to the article.
How to decide which path fits your situation
Start with your timeline and liquidity needs
If you might need access to your money within five years, stocks win by a landslide. You can sell a global tracker fund on any business day and have the cash in your bank account within three days. Property locks your money up for months. If you’re investing for retirement and won’t touch the money for 15–20 years, both options can work — but the cost advantage of stocks becomes overwhelming over long periods. A 0.2% annual fee versus costs that eat 30–50% of your rental income compounds into a massive difference over two decades.
Calculate your real property yield before buying
Most people calculate yield as annual rent divided by property value. That’s gross yield, and it’s misleading. To get net yield, subtract: mortgage interest, letting agent fees (8–15% of rent), maintenance (budget 1% of property value per year), landlord insurance, void periods (assume one month per year), and the cost of legally required certificates. On a property with a gross yield of 5%, the net yield after these costs and mortgage interest can easily drop to 2% or less. If that number doesn’t excite you, neither will the investment.
Use an ISA for stocks and a professional for property
If you choose stocks, open a Stocks & Shares ISA immediately. Every pound of gain or dividend inside an ISA is completely tax-free. That’s a structural advantage property cannot match. If you choose property, speak with a property lawyer before you exchange contracts — the legal and tax implications of a buy-to-let are complex, and a mistake on stamp duty or tenancy agreements can cost thousands. I’ve seen too many people skip this step and regret it.
Consider the hybrid option: REITs inside an ISA
A Real Estate Investment Trust (REIT) is a company that owns and operates income-producing property, and its shares trade on the stock market. You get property exposure — commercial, residential, or industrial — without any of the hands-on work. You can hold REITs inside an ISA, so the income and gains are tax-free. The minimum investment is the price of one share, often under £10. It’s not a perfect substitute for direct ownership, but for most people it’s a better fit than buying a single rental property with all the associated costs and risks.
What I’d do: if you’re set on property, start with a REIT inside an ISA. Learn how the sector behaves, see how your returns compare to a global tracker, and only consider direct ownership if you have a clear edge — local knowledge, renovation skills, or a below-market purchase opportunity. For everyone else, a low-cost global index fund inside an ISA is the simpler, cheaper, and more reliable path.
Frequently asked questions
Can I lose more than my deposit on a buy-to-let? ▾
Does the 7–10% stock return include dividends? ▾
What happens to property returns if interest rates stay high? ▾
Is it possible to invest in property without a mortgage? ▾
Can I hold property inside an ISA? ▾
If you’re still weighing the two, start with what you can control: costs, liquidity, and tax. Property’s leverage is real, but so are its expenses and risks. Stocks are simpler, cheaper, and more tax-efficient, but they lack the tangible appeal and the mortgage multiplier. For most people, a global index fund inside an ISA is the better long-term bet — not because property is bad, but because the numbers work harder when you’re not paying for boilers, agents, and void periods. If this was useful, you might also want to read the UK’s most undervalued towns for property investment.
Sources and Further Reading
Downsizing in the UK: when your home no longer fits — A practical look at whether selling up and moving to a smaller property makes financial sense in today’s market.
Investing vs Property UK: Which Builds More Wealth?. Compoundwise, 2024.
