How To Work Out ROI On Property Deals

Man working out ROI on a property deal - Assets For Life

Key Takeaways:

  • ROI tells you how hard your money is working
  • You must include all costs, not just the obvious ones
  • Cash flow is more important than paper profit
  • Small mistakes in numbers can lead to big losses
  • Good investors rely on data, not guesswork

What does ROI mean in property?

ROI stands for return on investment.

In simple terms, it shows how much profit you make compared to the money you put in.

If you invest £20,000 and make £2,000 per year, your ROI is 10 percent.

It sounds simple, but where most people go wrong is missing costs or using the wrong figures.

That is why understanding how to work out ROI on property properly is so important.

 

The basic ROI formula

Let’s keep it simple.

The standard formula is:

Annual profit divided by total cash invested multiplied by 100

This gives you your ROI as a percentage.

But here is the key point. You need accurate numbers for both parts of that formula.

If your inputs are wrong, your result is meaningless.

 

Step by step: how to work out ROI on property

Let’s walk through a real example.

Step 1: Work out your total investment

This includes everything you put into the deal:

  • Deposit
  • Stamp duty
  • Legal fees
  • Refurbishment costs
  • Mortgage fees
 

Example:

  • Deposit: £25,000
  • Stamp duty: £3,000
  • Legal fees: £1,500
  • Refurbishment: £5,000
 

Total investment: £34,500

 

Step 2: Calculate your annual rental income

This is your total rent over a year.

Example:

  • Monthly rent: £900
  • Annual rent: £10,800
 

Step 3: Subtract all your expenses

This is where many investors make mistakes.

You need to include:

  • Mortgage payments
  • Letting agent fees
  • Maintenance
  • Insurance
  • Void periods
  • Licensing costs if applicable
 

Example:

  • Mortgage: £6,000 per year
  • Other costs: £2,000
 

Total expenses: £8,000

 

Step 4: Work out your annual profit

Annual rent minus expenses:

£10,800 minus £8,000 = £2,800 profit

 

 

Step 5: Calculate your ROI

£2,800 divided by £34,500 multiplied by 100 = 8.1 percent ROI

That is your real return.

 

What most landlords get wrong

Landlords often overestimate income and underestimate costs.

For example:

  • Forgetting to include void periods
  • Ignoring maintenance
  • Not accounting for tax

This leads to deals that look good on paper but perform poorly in reality.

 

ROI vs cash flow: what matters more?

ROI is important, but it is not the only number you should look at.

Cash flow is just as important.

Cash flow is the actual money left in your account each month after all expenses.

You can have a high ROI but poor cash flow if your deal is structured badly.

That is why experienced investors focus on both.

That is a big difference.

How to improve your ROI

If your ROI is low, it does not always mean the deal is bad. It may just need improving.

Here are a few ways investors increase returns:

  • Buying below market value
  • Adding value through refurbishment
  • Increasing rent where possible
  • Reducing unnecessary costs
 

We cover these strategies in more detail here:
https://assetsforlife.co.uk/property-strategies
https://assetsforlife.co.uk/property-training
https://assetsforlife.co.uk/blog

The key is understanding where the numbers can be improved.

What is a good ROI in the UK?

This is one of the most common questions.

There is no single answer, but as a rough guide:

  • 5 to 7 percent is average for standard buy to let
  • 8 to 12 percent is considered strong
  • 12 percent plus is usually seen in higher yield strategies
 

It all depends on location, strategy, and risk.

Government housing data can give context on yields and trends:
https://www.ons.gov.uk/housing

 

Why ROI matters more in 2026

With rising interest rates and tighter margins, understanding how to work out ROI on property is more important than ever.

According to the Bank of England:
https://www.bankofengland.co.uk/monetary-policy

Higher borrowing costs mean less room for error.

Deals that worked a few years ago may no longer stack up.

This is why serious investors rely on numbers, not assumptions.


Common Questions About how to work out ROI on property

What is ROI in property investing?

ROI measures how much profit you make compared to the money you invest. It helps you understand whether a property deal is worth pursuing based on real financial performance.

How do I calculate ROI on a rental property?

You divide your annual profit by your total investment and multiply by 100. This gives you a percentage that shows your return.

What costs should I include in ROI calculations?

You should include all costs such as deposit, stamp duty, legal fees, mortgage payments, maintenance, insurance, and any licensing or management fees.

Is ROI more important than cash flow?

Both matter. ROI shows overall return, while cash flow shows how much money you actually receive each month. Strong investments usually have both.

What is a good ROI for UK property?

It depends on the strategy, but many investors aim for at least 8 percent. Higher returns are often linked to more active strategies.

Can ROI change over time?

Yes. Changes in rent, interest rates, or expenses can affect your return. It is important to review your numbers regularly.

Do I need to include tax in ROI?

Yes, for a true picture. Ignoring tax can make a deal look better than it actually is.

Why do some investors get ROI wrong?

They often miss costs or overestimate rental income. Small errors can significantly impact the final calculation.


What this means for your next deal…

Learning how to work out ROI on property gives you a huge advantage.

It means you can spot good deals, avoid bad ones, and make decisions based on facts.

Most people skip this step. That is why many struggle.


Want to make smarter property investments?

If you want to get confident with your numbers and avoid costly mistakes, the right guidance can make all the difference. Assets For Life has helped thousands of investors understand property deals properly and build portfolios that actually perform.

Start by learning how to break down deals step by step and apply it to real opportunities. Be sure to join our next property training event by click the link below!

Picture of Liam Ryan
Liam Ryan

Liam J Ryan is a Forbes-featured, 8-figure property business entrepreneur, best-selling author, mentor, host, and co-founder of Assets For Life.

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