£300,000 Mortgage : Monthly Repayments & Income Requirements

Looking to buy a property with a £300,000 mortgage? Read on to find out what the repayments could be and how much income you’ll need.

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Pete Mugleston Jon Nixon

Author: Pete Mugleston - Mortgage Advisor, MD

Reviewed By: Jon Nixon - Director of Distribution

Updated: November 30, 2023
October 3, 2022

Here, we’ve put together everything you need to know about what the repayments on a £300,000 mortgage could be, how much income you’ll need to earn and why using a mortgage broker can help secure the lending you need with the best interest rates.

To start, use our calculator below to get a rough idea of how much a mortgage of this amount could cost you each month based on different interest rates and term lengths.

How much does a £300,000 mortgage cost per month?

Based on a standard repayment mortgage with a typical interest rate available currently (October 2023) of 5.5% and a term length of 25 years, you should expect to pay £1,842 per month.

However, the exact size of your monthly repayments will depend on a number of factors, namely your interest rate, term length, and the type of mortgage you opt for, such as a tracker, fixed-rate or interest only loan.

Calculator Icon

Mortgage Repayment Calculator

Our mortgage repayment calculator can tell you how much your mortgage will cost you each month and overall. Enter the amount you’re borrowing, the term length and interest rate, and our calculator will do the rest.

Enter the amount you're borrowing
5.5% is an average figure but the rate you get may vary
25 years is average, but most lenders offer longer and shorter terms

Monthly Repayments:

Total amount paid at end of term:

Get started with an expert broker to find out how much they could help you save on your mortgage repayments.

Mortgage repayment tables

Our mortgage repayment tables will give you an idea of how much monthly payments on a £300k mortgage will be, based on a standard capital and repayment method.

For a more accurate, bespoke figure, using the most competitive rates available at that time, get in touch and we’ll match you with one of our expert brokers who’ll be able to help.

Interest Rate
Term (years) 1 2 3 4 5 5.5
10 £2,628 £2,760 £2,897 £3,037 £3,182 £3,256
15 £1,795 £1,931 £2,072 £2,219 £2,372 £2,451
20 £1,380 £1,518 £1,664 £1,818 £1,980 £2,064
25 £1,131 £1,272 £1,423 £1,584 £1,754 £1,842
30 £965 £1,109 £1,265 £1,432 £1,610 £1,703
35 £847 £994 £1,155 £1,420 £1,514 £1,611

For the purpose of the table above we are assuming the interest rate stays the same for the full length of the mortgage. Interest rates can change if you decide to remortgage to a different rate or move from either a fixed or discounted deal to the lender’s standard variable rate (SVR).

You could decide to opt for an interest-only mortgage, in which case your monthly repayments would be significantly lower. Using the same rate (5.5%) and term (25 years) as above, the monthly repayments for £300,000 using this method would be £1,375.

However, you’d still need to pay back the full amount borrowed at the end of your mortgage term and your lender would require evidence of a viable repayment vehicle.

Maximise your chance of approval with a dedicated specialist broker

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How much do you need to earn to get a £300k mortgage?

Generally speaking, you can borrow 4 to 4.5 times your combined annual household income. That means your annual earnings would need to be between £75,000 and £66,000 to borrow £300k. This can be on either a sole or joint basis, depending on how you wish to apply and your personal circumstances.

However, all lenders have different approaches in calculating how much they are willing to let you borrow for a mortgage. Some may be happy to go above 4 times your income if other parts of your application are strong enough. Some may go up to 5 times and a very select few go to 6 times. The higher the multiplier, the less you need to earn. If you’re eligible for 6 times income – usually only available to certain professions, such as a doctor or lawyer – you would need to earn £50,000 to borrow £300k.

If you’d like to see how this works out for yourself, based on your own annual income, take a look at our mortgage affordability calculator below:

Calculator Icon

Mortgage Affordability Calculator

Our affordability calculator can tell you how much you can potentially borrow from a mortgage lender. Simply enter your total household income below and our calculator will do the rest.

Input full salaries for all applicants

You could borrow up to 

Most lenders would consider letting you borrow

This is based on 4.5 times your household income, the standard calculation used by the majority of mortgage providers. To borrow more than this, you will need to use a mortgage broker to access specialist lenders.

Some lenders would consider letting you borrow

This is based on 5 times your household income, a salary multiple you might struggle to qualify for without the help of a broker. This income multiple is not widely available to customers who are applying directly with a lender.

A minority of lenders would consider letting you borrow

This is based on 6 times your household income, a salary multiple you will struggle to get without a broker. Six-times salary mortgages are usually only available under very specific circumstances.

Get Started with an expert broker to find out exactly how much you could borrow.

How to get a £300,000 mortgage

After you’ve found the property you want to buy and made some calculations, make an enquiry with us so we can match you with the right mortgage broker to boost your chances of securing the best rate and deal.

They’ll be able to help with:

  • Working out how much you can borrow. You may have set your sights on a £300,000 mortgage, but do you definitely know you can borrow that amount? A mortgage broker, using typical lender salary multiplier calculations, will be able to quickly confirm this for you.
  • Downloading and optimising your credit reports. It’s important to review your credit history before you apply for a mortgage, checking for any inaccuracies or outdated information that can be removed beforehand.
  • Finding the right lender and securing the best deal for you. Your mortgage broker will be able to identify those lenders offering the best interest rate terms available across the whole market.
  • Gathering all the necessary paperwork required for your application. Your broker will be able to guide you through the application process and all the typical documents required – proof of income, recent bank statements, personal ID etc.

How much deposit do you need for a £300,000 mortgage?

Typically, you will need between 5%-10% of the property value (not the mortgage amount) as a deposit. So, if you were buying a property valued at £300,000 (rather than borrowing this amount) you’d need a deposit of between £15,000-£30,000 and then you’re actual mortgage would be between £285,000-£270,000.

If you wanted to borrow £300k specifically then the property values would need to be (approximately) between £316,000-£333,000 if you only have a deposit of between 5%-10%.

However, the higher your deposit the more likelihood of qualifying for the most competitive interest rates as mortgage lenders will reserve their best rates for mortgages with the lowest loan-to-value (LTV).

It’s not completely out of the question to secure a mortgage for £300,000 with no deposit at all, but this is extremely rare at the moment.

You can see how this works on our calculator below.

Calculator Icon

LTV Calculator

This calculator will tell you what your loan-to-value (LTV) ratio is, based on the property's value, your deposit/equity and the amount you're borrowing.

Enter an amount in pound sterling
Property value minus your deposit/equity
Loan amount must be less than property value

Your LTV is

This means that most mortgage providers will consider your deposit amount to be more than satisfactory, but speaking to a broker is still recommended to ensure you get the best deal.

This means you’re likely to meet the deposit requirements at most lenders, but since many reserve their best rates for those with higher deposits, speaking to a broker is recommended.

Many mainstream mortgage providers would consider this high and be reluctant to lend. Applying through a mortgage broker may be necessary to find a specialist low deposit mortgage lender.

LTVs have a direct impact on the rates available to you - speak to a mortgage broker and find out how to get the best deal based on your ratio.

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Other factors that can affect your mortgage repayments

In addition to those mentioned above – interest rate, loan term, deposit, mortgage type and repayment method – your repayments can also be affected by several other factors indirectly, such as your age and credit history, as these could limit the number of lenders willing to consider your application.

A broker will take all of these into consideration and match you with the right lender. They also get access to exclusive deals and can negotiate with lenders on your behalf, saving you both time and money.

Additional costs to consider

It’s important to remember that your monthly repayments are just part of the cost of getting a mortgage.

There are several other fees you’ll need to take into consideration, such as:

Arrangement fee

Also known as a product fee or booking fee, this is charged by your lender and is either paid upfront or added to the cost of your mortgage. Remember that adding it to your mortgage will push your monthly repayments up and incur more interest. The size of this fee varies quite dramatically but is usually in the region of between £1,000-£2,000 .

Booking fee

Lenders typically charge this fee for borrowers to secure a certain product such as a fixed rate or a discount deal. It’s usually between £100-£200.

Valuation fee

Your lender will carry out a valuation to check you’re paying what the property is worth. This will typically cost you anywhere between £250 and £1,500, depending on the complexity involved.

Survey fee

A survey checks the general condition of the property you’re buying, including looking for any structural damage or damp. It can cost between £200-£600, depending on how in-depth you want the survey to be .

Stamp Duty

This is the tax you pay when buying a property. The amount of stamp duty you pay will depend on the price of the property, whether you’re a first-time buyer or not and if this is a main residence or second home.

Conveyancing fee

This covers all the legal work associated with buying a property and can cost up to £2,000.

Why use Online Mortgage Advisor?

If you’re looking to buy a property with a £300,000 mortgage, a broker who specialises in this bracket size is best placed to help you. They have relationships with all the lenders and know exactly who to approach based on your particular circumstances.

Our broker-matching service can connect you with an expert who will help you find the a deal best suited to your specific circumstances. Give us a call on 0808 189 2301 or make an enquiry and get matched with an expert today for a free initial conversation.

Maximise your chance of approval with a dedicated specialist broker

Get Started Phone Icon 0808 189 2301

About the author

Pete, an expert in all things mortgages, cut his teeth right in the middle of the credit crunch. With plenty of people needing help and few mortgage providers lending, Pete found great success in going the extra mile to find mortgages for people whom many others considered lost causes. The experience he gained, coupled with his love of helping people reach their goals, led him to establish Online Mortgage Advisor, with one clear vision – to help as many customers as possible get the right advice, regardless of need or background.

Pete’s presence in the industry as the ‘go-to’ for specialist finance continues to grow, and he is regularly cited in and writes for both local and national press, as well as trade publications, with a regular column in Mortgage Introducer and being the exclusive mortgage expert for LOVEMoney. Pete also writes for Online Mortgage Advisor of course!

Read more about Pete

Pete Mugleston

Mortgage Advisor, MD

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