​If you’re thinking about buying a property, remortgaging, or your current mortgage deal is coming to an end, there’s a good chance you’ve been asking yourself the same question we hear almost every day at Mewstone Mortgage Advice:

“Should I wait for mortgage interest rates to come down?”

It’s a completely understandable question.

Over the last few years, mortgage rates in the UK have changed rapidly. News headlines constantly talk about interest rates rising, the Bank of England, inflation, and the housing market — and for many people in Plymouth and the South Hams, it can feel difficult to know what the right decision actually is.

In this article, we want to break things down in a simple, realistic way and explain:

• how mortgage rates affect your monthly payments,
• what happens if rates reduce,
• how rising house prices can impact affordability,
• and why trying to “time the market” perfectly is often much harder than people think.

How Much Difference Do Mortgage Rates Actually Make?

Let’s use a simple example.

Imagine you’re buying a property in Plymouth and borrowing £200,000 on a 35-year repayment mortgage.

Mortgage Payments at 5%

If mortgage interest rates were 5%, your monthly repayments would be approximately:

£1,010 per month

Now let’s say mortgage rates reduce slightly.

Mortgage Payments at 4.5%

If rates dropped by 0.5%, your monthly repayments would reduce to approximately:

£945 per month

That’s a saving of around £60–£65 per month.

And if rates reduced further to 4%?

Mortgage Payments at 4%

Your repayments would reduce again to approximately:

£885 per month

So yes — lower interest rates generally mean lower monthly payments.

But this is where things become more complicated.

The Part Many Buyers Forget About

A lot of people focus purely on mortgage rates when deciding whether to buy now or wait.

But mortgage rates are only one part of the picture.

The other major factor is house prices.

Because while you’re waiting for rates to reduce, property prices may continue rising.

And that can sometimes offset the savings you were hoping to achieve.

Example: Waiting 6 Months for Rates to Fall

Let’s go back to our original example.

You were originally borrowing:

• £200,000
• Over 35 years
• At 5% interest
• Monthly payments: approximately £1,010

Now imagine you decide to wait 6 months to see whether rates improve.

But during that time:

• rates stay the same,
• and the property price increases by £10,000.

Now instead of borrowing £200,000, you need to borrow:

£210,000

At the same 5% interest rate, your payments would now increase to approximately:

£1,060 per month

That’s an increase of around £50 per month.

What If You Wait Even Longer?

Now let’s say you continue waiting another 6–12 months hoping rates eventually reduce.

But rates remain unchanged and property prices increase again.

Now you need to borrow:

£220,000

At 5%, your repayments would now be approximately:

£1,110 per month

That’s roughly £100 per month more than the original example.

Mortgage Rates vs House Prices: Which Matters More?

When you actually break the numbers down, something interesting happens.

A 0.5% rate reduction changes payments by around £60 per month.

Borrowing an extra £10,000 changes payments by around £50 per month.

So while everyone understandably focuses on mortgage interest rates, rising house prices can have a very similar impact on affordability.

This is why trying to perfectly “time the market” can be extremely difficult.

Nobody Knows Exactly What Will Happen Next

One of the biggest mistakes we see people make is relying too heavily on headlines or trying to predict the market perfectly.

The reality is:

• nobody knows exactly what interest rates will do,
• nobody knows exactly what house prices will do,
• and nobody can perfectly predict the mortgage market.

Mortgage rates can change quickly.
Property prices can change quickly.
Lender criteria can change quickly.

And often, by the time the “perfect moment” arrives, the market has already moved again.

So Should You Wait or Buy Now?

The honest answer is:

It depends entirely on your personal circumstances.

For some people, waiting may absolutely make sense.

For others, buying sooner could actually save money long-term — even if rates are slightly higher today.

That’s why it’s so important not to make decisions based purely on:

• headlines,
• social media,
• or general market predictions.

Instead, the best thing you can do is understand:

• what your budget looks like,
• what lenders would currently offer you,
• what your monthly payments may look like,
• and how flexible your options are.

Speaking to a Whole-of-Market Mortgage Advisor

At Mewstone Mortgage Advice, we help clients across:

• Plymouth,
• Ivybridge,
• Plympton,
• Tavistock,
• Saltash,
• and the wider South Hams

understand their mortgage options properly.

As a whole-of-market mortgage brokerage, we have access to over 100 lenders, which means we can compare a wide range of mortgage products to help find the most suitable option for your circumstances.

Whether you are:

• a first-time buyer,
• moving home,
• remortgaging,
• self-employed,
• or simply unsure what your next step should be,

our job is to help you make sense of the numbers and put together a clear plan.