Rental Yield Calculator United Kingdom

Rental yield expresses the rent as a percentage of what a property costs, so a flat in one city and a house in another can be compared on the same scale. This calculator works out the gross yield and the net yield after running costs and empty weeks, so you can judge whether a buy-to-let property works as an investment.

Gross versus net yield

Gross yield is annual rent divided by the property value, as a percentage. It is quick and useful for a first comparison, but it ignores costs. Net yield takes the rent after letting agent fees, insurance, maintenance, service charges and the weeks a property sits empty between tenants. Two properties with the same 5% gross yield can have very different net yields once a leasehold service charge or a hard-to-let location is taken into account.

What counts as a good yield

There is no universal answer, because yield trades off against capital growth. Expensive areas where investors expect prices to rise usually show lower gross yields, while cheaper areas can offer higher yields and stronger cash flow with less growth. A low gross yield leaves little room once a mortgage and costs are paid. Use the calculator to test each property against your own target.

Costs and voids matter

The most common mistake new landlords make is judging a property on gross yield alone. Enter realistic annual running costs, such as letting or management fees, buildings insurance, gas safety checks and repairs, and any ground rent or service charge on a leasehold, plus an honest allowance for void periods. Even two or three empty weeks a year noticeably reduce the net yield, and the net figure shows whether a property pays its way.

A worked example

Take a £250,000 property let at £1,000 a month. The annual rent is £12,000, a gross yield of 4.8%. Allow £2,000 a year of running costs and two weeks of voids: the effective rent falls to about £11,538, and after costs the net income is about £9,538, a net yield of about 3.8%. A cheaper £200,000 property renting for £900 a month has a 5.4% gross yield and, with lower costs, can out-yield it, which is the kind of comparison the calculator is for.

Yield is not the whole return

Yield measures the income return on the property’s value. A landlord’s total return also includes any rise or fall in the property’s price, and finance and tax change it heavily. A mortgage adds gearing, which amplifies both gains and risks. Individual landlords can no longer deduct mortgage interest from rental profit and instead get a basic rate tax credit, so for higher and additional rate taxpayers a property with a healthy gross yield can still produce thin or negative cash flow once finance is paid. Stamp Duty (with the surcharge on additional properties), legal and survey fees at purchase and Capital Gains Tax on sale also reduce the return. A high-yield, low-growth property and a low-yield, high-growth one can end with similar total returns, so use yield to compare income potential, then add your view on growth, finance and tax.

How to use the calculator and read the result

Enter the property value or purchase price and the monthly rent to see the gross yield and annual rent. Use the advanced options to add annual running costs and void weeks, and the net yield and net income update. You can compare several properties, stress-test a purchase with higher costs or a longer void, or find the rent needed to reach a target yield. The gross figure shows how the property compares before costs; the net yield and net income in pounds show what reaches you. If a small change in voids or costs swings the net yield sharply, the deal has little margin for error.

Assumptions and limitations

This is a yield estimate for comparison, not a full investment appraisal. It does not include mortgage interest or capital repayments, Stamp Duty and purchase costs, Capital Gains Tax on sale or capital growth, all of which affect the total return; use a buy-to-let tax or cash-flow tool for the return after finance and tax. The net yield reflects the costs and voids you enter, so it is only as accurate as those inputs. Every figure comes from you, so there are no stored rates to keep current.

About This Rental Yield Calculator

Use this rental yield calculator to get an instant estimate based on the figures you enter. Adjust the inputs above to match your situation, or browse all our calculators to plan your next step.