Is Your Rental Property Still Making You Enough Money? The Numbers Every Landlord Should Check
Your rent might have increased, but has your profit? Rising maintenance costs, mortgage payments and empty periods can quietly eat into your returns. Here's how to find out whether your rental property is really performing.
Your Rent Has Gone Up. But Has Your Profit?
You bought a rental property to generate an income, build long term wealth or perhaps provide some financial security for the future.
The tenant pays their rent every month. The property has increased in value since you bought it. Everything appears to be working.
But here's a question worth asking.
When was the last time you calculated how much money your rental property is actually making you?
Not the monthly rent.
Not what you think the property is worth.
The money left after all the costs of owning and operating it.
Because a rental property can look profitable on paper while delivering a considerably smaller return than you realise.
And with changing legislation, financing costs and tenant expectations, October is a sensible time to review your position.
1. Your Monthly Rent Is Not Your Monthly Profit
Let's imagine your property generates £1,400 per month in rent.
That's £16,800 per year.
At first glance, it sounds like a healthy income.
But now consider an illustrative annual breakdown.
Annual rental income: £16,800
Mortgage payments: £8,400
Maintenance and repairs: £1,200
Insurance: £350
Management and letting costs: £1,800
Allowance for void periods: £700
Remaining annual cash flow: £4,350
That's approximately £362 per month before tax and other potential costs.
And the example assumes no major unexpected repairs.
A replacement boiler, roof repair or extended period without a tenant could change that figure significantly.
It's also important to distinguish cash flow from taxable profit. Mortgage capital repayments and the tax treatment of finance costs can affect those calculations differently.
The important question isn't how much rent you're collecting. It's what you're keeping and what you're getting in return for the money invested.
2. Are You Charging The Right Rent?
Rental markets change, and a property that was competitively priced two years ago might no longer reflect current local conditions.
But increasing rent isn't simply about charging the highest figure possible.
You also need to consider the property's condition, location, demand, comparable properties and the value of retaining a reliable tenant.
Imagine your current tenant pays £1,200 per month, while similar properties are advertised at £1,300.
That £100 difference represents £1,200 annually.
However, if pursuing a higher rent results in a month without a tenant, additional letting costs and preparation work, the financial benefit could quickly disappear.
The best rental strategy balances income, occupancy, tenant retention and long term property performance.
It also needs to comply with the legal rules governing rent increases.
If you're unsure how your rental property compares with the local market, reviewing your current rent is a useful starting point.
3. The Hidden Cost Of An Empty Property
One of the biggest threats to rental profitability is a void period.
A property generating £1,400 per month loses that rental income every month it remains empty.
But the costs don't necessarily stop.
Mortgage payments, insurance, utilities and certain property expenses may continue.
And depending on the circumstances, you may also need to pay for cleaning, repairs, compliance work and marketing before securing another tenant.
Consider a property generating £16,800 annually.
Just one month without rent reduces its potential annual rental income to £15,400.
That's an 8.3% reduction in rental income before accounting for any additional costs associated with finding a new tenant.
This is why securing the right tenant, maintaining the property and planning ahead for tenancy changes matter.
An occupied property generating a sustainable rent can be more valuable than an overpriced property sitting empty.
4. Are Maintenance Costs Quietly Eating Into Your Returns?
Every property requires maintenance.
But there's a difference between planned expenditure and constantly reacting to problems.
A landlord who regularly reviews their property's condition can often identify issues before they become more expensive.
A small leak might be relatively straightforward to repair.
Left unattended, it could develop into damage requiring significant remedial work.
The same applies to heating systems, roofing, ventilation and general property condition.
It can be useful to review your maintenance spending over the previous 12 months and identify whether costs are increasing.
Ask yourself:
Are repairs becoming more frequent?
Are the same problems recurring?
Would preventative work reduce future costs?
Does the property's condition support the rent being charged?
Are there improvements that could help attract and retain suitable tenants?
Not every improvement will deliver a financial return, but understanding your maintenance position makes budgeting considerably easier.
5. Are You Measuring The Right Return?
Many landlords calculate rental yield by dividing annual rent by the property's value.
For example, a property worth £300,000 generating £15,000 annually has a gross rental yield of 5%.
But gross yield doesn't account for the costs of running the property.
To understand performance more clearly, you should also examine your net operating income, financing costs, cash flow and the amount of equity tied up in the property.
Two landlords could own similar properties generating identical rents but achieve very different financial outcomes.
One might have a small mortgage and relatively low running costs.
The other could have substantial borrowing, higher maintenance expenses and regular void periods.
The rent might be identical. The actual financial performance isn't.
For landlords with multiple properties, reviewing each investment individually can also reveal which properties are performing well and which may require attention.
6. What About Changing Landlord Legislation?
Rental profitability isn't just influenced by income and expenditure.
Legal responsibilities matter too.
Landlords need to understand the requirements affecting their properties, including safety obligations, deposit protection, property standards and the rules governing tenancies.
The Renters' Rights Act 2025 has introduced significant changes to England's private rented sector, with reforms being implemented in stages.
The details and commencement dates matter, so landlords should check the current government guidance rather than relying on outdated tenancy agreements or assumptions about previous rules.
A profitable rental property also needs to be a compliant rental property.
Failing to understand your obligations can expose you to unnecessary costs and risks.
The Avenue View
We believe landlords should understand how their investment is performing, not simply whether the rent has arrived.
Because a successful rental property involves more than collecting monthly payments.
It's about maintaining the property, managing costs, protecting occupancy, understanding the market and staying informed about your responsibilities.
The strongest decisions come from knowing your numbers.
Sometimes a review will confirm that your property is performing well.
Other times, it may highlight opportunities to improve income, reduce avoidable expenditure or reconsider your longer term plans.
At The Avenue, our aim is to help landlords make informed decisions about their property investments.
And that starts with understanding where you stand today.
Frequently Asked Questions
What is a good rental yield in the UK?
There isn't one universal figure. A suitable yield depends on location, property type, borrowing costs, maintenance requirements, risk and your investment objectives. Gross yield should not be considered in isolation.
How do I calculate my rental property's gross yield?
Divide your annual rental income by the property's current value, then multiply by 100. For example, £15,000 annual rent on a £300,000 property produces a 5% gross yield.
Should I increase my tenant's rent every year?
Not automatically. Review comparable local rents, your property's condition, tenant retention and the legal rules governing rent increases before making a decision.
How much should landlords budget for maintenance?
There is no fixed amount suitable for every property. Age, condition, type and previous repair history all affect likely expenditure. Maintaining a reserve for unexpected repairs is sensible.
Should I sell my rental property if the returns are falling?
Not necessarily. First review the reasons for declining returns, your financing arrangements, future costs and investment objectives. Professional financial and tax advice may be appropriate before making a major decision.
Is Your Rental Property Working As Hard As It Should?
If you own a rental property, there's one question worth answering before making any big decisions.
Is it delivering the return you actually expect?
A review of your rental income, costs, property condition and future plans can help identify where improvements might be possible.
We've created a Landlord Health Check to help you start that process.