PropertyIf you're thinking about buying a property to let — or you already own one — rental yield is one of the most important numbers you need to understand. It tells you how much income your property generates relative to what you paid for it. Yet many landlords focus purely on the monthly rent figure without ever calculating whether the investment actually stacks up.
This guide explains exactly what rental yield is, how to calculate it (both gross and net), what a good yield looks like across different UK cities, and how lenders use it when deciding whether to offer you a buy-to-let mortgage.
What Is Rental Yield?
Rental yield is the annual rental income of a property expressed as a percentage of its value. It's the landlord's equivalent of a savings rate — it tells you how hard your money is working for you in property form.
There are two versions you need to know:
- Gross rental yield — the raw income figure, before any costs are deducted
- Net rental yield — the realistic return after all costs have been subtracted
Gross yield is easy to calculate and useful for quick comparisons between properties. Net yield is what actually matters when deciding whether a buy-to-let investment makes financial sense.
How to Calculate Gross Rental Yield
The gross rental yield formula is straightforward:
Gross Yield (%) = (Annual Rent ÷ Property Value) × 100
Worked Example 1: A Flat in Manchester
You buy a two-bedroom flat in Manchester for £180,000. You rent it out for £850 per month.
- Annual rent: £850 × 12 = £10,200
- Gross yield: (£10,200 ÷ £180,000) × 100 = 5.67%
Worked Example 2: A Flat in London
You buy a one-bedroom flat in East London for £380,000. You rent it out for £1,500 per month.
- Annual rent: £1,500 × 12 = £18,000
- Gross yield: (£18,000 ÷ £380,000) × 100 = 4.74%
You can calculate gross yield for any property instantly using our free rental yield calculator.
How to Calculate Net Rental Yield
Net yield gives you a far more realistic picture of your actual return. To calculate it, you need to subtract all the annual costs of owning and letting the property from your rental income — then divide that figure by the property value.
Net Yield (%) = ((Annual Rent − Annual Costs) ÷ Property Value) × 100
Typical annual costs to factor in include:
- Mortgage interest — often the largest cost for leveraged landlords
- Letting agent fees — typically 8–15% of monthly rent for full management
- Maintenance and repairs — a common rule of thumb is 1% of property value per year
- Landlord insurance — buildings and contents cover, typically £200–£400/year
- Void periods — budget for 4–6 weeks of empty property per year
- Ground rent and service charges — for leasehold properties
- Accountancy fees — if you use a professional to file your landlord tax return
Worked Example: Net Yield on a £180,000 Manchester Flat
Using the same Manchester flat from above (£180,000 purchase, £850/month rent):
| Cost | Annual Amount |
|---|---|
| Mortgage interest (£135k at 4.5%) | £6,075 |
| Letting agent fees (10%) | £1,020 |
| Maintenance allowance (1%) | £1,800 |
| Insurance | £300 |
| Void periods (4 weeks) | £654 |
| Total costs | £9,849 |
Net annual income: £10,200 − £9,849 = £351
Net yield: (£351 ÷ £180,000) × 100 = 0.19%
This example illustrates an important truth: a 5.67% gross yield can shrink dramatically once costs are factored in. Landlords who ignore net yield often find their property is barely breaking even — or actually losing money each month.
What Is a Good Rental Yield in the UK?
There is no single "good" rental yield — it depends on your investment strategy, whether you're using a mortgage, and what the local market looks like. However, as a general guide:
- Below 4% — Low yield. May only make sense if you're banking on capital growth.
- 4%–6% — Average for most UK cities. Acceptable if costs are controlled.
- 6%–8% — Good yield. Strong income return, typical in the North of England.
- 8%+ — Excellent yield, though often comes with higher management demands or risk.
Typical Yields by City (Gross, 2025/26)
| City | Typical Gross Yield |
|---|---|
| London | 3%–4% |
| Bristol | 4%–5% |
| Birmingham | 5%–6% |
| Leeds | 5%–7% |
| Manchester | 5%–7% |
| Sheffield | 6%–8% |
| Liverpool | 6%–8% |
| Nottingham | 6%–8% |
| Glasgow | 6%–9% |
Notice that London offers the lowest yields in the UK — property prices are high relative to rents. Investors drawn to London typically do so for long-term capital appreciation rather than income. Northern cities offer much stronger rental income, which is why many landlords have shifted focus to areas like Manchester, Liverpool and Sheffield over the past decade.
How Rental Yield Affects Buy-to-Let Mortgage Eligibility
When you apply for a buy-to-let mortgage, lenders don't just check your personal income — they assess whether the expected rental income is sufficient to cover the mortgage payments. This is known as the rental stress test.
Most lenders require the monthly rent to be at least 125%–145% of the monthly mortgage interest payment, calculated at a stressed interest rate (often 5%–6%, regardless of the actual rate you're offered).
Example Stress Test Calculation
You want a £135,000 interest-only buy-to-let mortgage. The lender stress-tests at 5.5%.
- Stressed monthly interest: £135,000 × 5.5% ÷ 12 = £618.75/month
- Required rent at 125% coverage: £618.75 × 1.25 = £773/month minimum
- Required rent at 145% coverage: £618.75 × 1.45 = £897/month minimum
If your property only achieves £750/month in rent, a lender using the 145% stress test would decline your application — even if the property is profitable in practice. This means gross yield directly influences your ability to finance a buy-to-let purchase. A property with a higher yield is easier to mortgage.
You can model different scenarios using our mortgage calculator and check stamp duty costs with our stamp duty calculator.
Capital Growth vs Rental Yield: The Trade-Off
One of the most debated topics in buy-to-let investing is whether to prioritise high yield or capital growth. The reality is that these two objectives often pull in opposite directions.
High-yield areas (like Liverpool or Nottingham) tend to see slower property price growth over time. High-growth areas (like London or Cambridge) tend to offer low yields because prices have already risen significantly relative to rents.
Your ideal strategy depends on your goals:
- If you need monthly income — prioritise yield. A yield of 6%+ gives you cash flow to cover costs and generate profit each month.
- If you're investing for the long term — capital growth may deliver larger overall returns, even with a modest yield.
- If you're using a mortgage — yield matters more because you need rent to cover your repayments. A low-yield property is harder to make work with leverage.
Many experienced landlords seek a blend: properties with above-average yield in areas where there is also some prospect of capital growth. Cities like Manchester and Birmingham have historically delivered both, making them popular targets for buy-to-let investors outside London.
Tips for Maximising Your Rental Yield
- Buy below market value — reducing your purchase price directly boosts yield
- Minimise voids — target areas with strong tenant demand and long-term renters
- Review rents annually — ensure rents keep pace with inflation and local market rates
- Consider HMOs — Houses in Multiple Occupation can generate significantly higher yields, though they come with greater management responsibilities
- Manage costs carefully — shop around for landlord insurance, and consider self-managing if you have the time
- Remortgage to a better rate — your mortgage interest is often your biggest cost, so keeping it low has a major impact on net yield
Calculate Your Rental Yield in Seconds
Whether you're assessing a property you already own or evaluating a potential purchase, our free rental yield calculator lets you input any property value, monthly rent and costs to instantly see your gross and net yield. No signup, no fuss.
Understanding your numbers before you buy — or before you remortgage — is one of the simplest ways to make better investment decisions. Use the calculator to compare different properties, stress-test different rent levels, or model the impact of a rate change on your net return.