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How much is a £300,000 mortgage a month?

When considering taking out a £300,000 mortgage, it’s important to think about how much the repayments are likely to cost you each month.

The size of your deposit will have a big impact on how much you end up paying in interest and how high your monthly repayments will be. If you can afford to put down a larger deposit, you could be offered a lower interest rate and this will help to keep your monthly repayments down even further.

The monthly cost of a £300000 mortgage depends on a number of factors, including the interest rate, the length of the loan term and the repayment type.

To get an accurate idea of how much a mortgage would cost you each month, it’s important to speak to a whole of market mortgage advisor who can assess your individual circumstances and give you tailored advice. They will be able to recommend the most suitable loan for you and provide you with an estimate of the monthly repayments.

Taking out a mortgage is a big financial commitment, so it’s important to do your research and make sure you’re fully aware of all the costs involved before making any decisions.

As a guide only, the tables below provide an indication of monthly payments.

10 years£500£750£1000£1250
15 years£500£750£1000£1250
20 years£500£750£1000£1250
25 years£500£750£1000£1250
10 years£2760£2896£3037£3181
15 years£1960£2071£2219£2372
20 years£1517£1663£1817£1979
25 years£1271£1422£1583£1753

The monthly cost of a 300K mortgage will vary according to these three factors:

Interest Rate

The interest rate is one of the biggest factors that will affect your monthly mortgage repayments. The higher the interest rate, the more you will have to pay each month.

It’s important to remember that interest rates can fluctuate and are not guaranteed to stay the same over the whole term of your mortgage. If interest rates rise, your monthly repayments will also increase. A fixed rate mortgage will give you the security of knowing that your monthly repayments will stay the same for a set period of time, regardless of any changes in interest rates but it generally does not last for the entire mortgage term.

Mortgage Term

The length of the mortgage term will also affect your monthly payments. If you take out a 30-year mortgage, your repayments will be lower each month than if you took out a 25-year mortgage. This is because you are spreading the cost of paying the mortgage back over a longer period of time. However, it’s important to remember that you will end up paying more interest overall with a longer mortgage term.

Repayment Type

The repayment type you choose will also affect your monthly repayments. If you opt for an interest-only mortgage, your monthly payments will be lower than if you choose a repayment mortgage. This is because with an interest-only mortgage, you are only paying the interest on the loan each month and not repaying any of the capital.

With a repayment (capital & interest) mortgage, you are repaying both the interest and the capital each month, so your monthly repayments will need to be higher.

It’s important to remember that with an interest only mortgage, you will still need to repay the full amount of the mortgage when it comes to the end of the mortgage term.

You may find our online mortgage calculator useful.


Choosing a mortgage is an important financial decision and it’s easier with someone who’s on your side. We work as a whole of market mortgage broker so that you get the best possible choice of mortgages.



We are perfectly placed to help you find a buy to let mortgage solution that matches your property needs for individuals, families, investors, landlords and Limited Companies.

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We are experienced whole of market brokers who can help you get a great holiday let mortgage.

We can also give you access to exclusive schemes and some specialist lenders who don’t deal direct with borrowers. Loans are available to individuals and SPV’s upto 75% and we can help with Scottish properties, mixed use, multi-lets and Airbnb.

Our holiday let mortgage brokers know the lenders and their lending criteria well, enabling us to guide you to the best holiday let mortgage solutions

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Bridging loans are one of the most useful, multi-purpose, types of lending solutions available. You can get a bridging loan approved on almost any property for almost any reason. Great for auction purchases or snapping up a buy to let bargain.

And we can arrange them really fast.

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Development finance is designed to help with the purchase and build costs for a residential development project.

Solutions are available for change of use, ground-up projects, refurbishment or major building work and property extensions.

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