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Understanding Mortgages: What They Are and How They Work

Kellie Cade
Kellie Cade
May 12, 2025

A mortgage is a loan specifically designed to help people buy property, usually a home.

To secure one, you’ll need to provide an upfront deposit and borrow the remaining amount from a lender, such as a bank or building society. Since the loan is secured against the property, the lender has the right to repossess and sell the home if you’re unable to keep up with your monthly repayments.

What Is a Mortgage Calculator and Why Should You Use One?

A mortgage calculator is a handy online tool that helps you estimate how much your mortgage might cost you each month. By adjusting variables like the loan amount, property value, loan term, and interest rate, you can quickly explore different scenarios and get a better understanding of what’s affordable based on your financial situation.

Find the Best Rates in Just 60 Seconds

We’ve partnered with RSC New Homes, an independent mortgage advisor, to offer a simple and effective mortgage calculator. In under a minute, you can compare mortgage rates from leading lenders tailored to your personal details.

To get started, you’ll just need to enter the following:

  • Mortgage repayment type
  • Purpose of the mortgage
  • Mortgage term
  • Property value
  • Desired loan amount

Once submitted, the calculator will generate a range of mortgage options for you to review. Interested in a particular quote? One of RSC’s new build mortgage advisors will be in touch to talk you through your options and help you secure the best deal. They’ll even handle the application process.

Calculate your mortgage

Why Comparing Mortgage Quotes Matters

Using a mortgage calculator helps you make more informed decisions about your finances. It allows you to:

  • Compare current interest rates and repayment options
  • Understand what monthly repayments might look like
  • Assess your affordability based on income and outgoings
  • Narrow down your property search to homes within budget

This insight is incredibly useful when planning your next move, whether you're buying your first home or refinancing an existing mortgage.

Who Can Benefit from Using the Calculator?

The tool is designed to support a range of mortgage needs. Whether you’re:

  • A first-time buyer
  • Looking to move to a new home
  • Interested in remortgaging your current property
  • Exploring a buy-to-let investment
  • Considering a buy-to-let remortgage

The calculator gives you a clearer picture of the options available, helping you take the next step with confidence.

Calculate your mortgage