Mortgage Types Explained: Fixed, Variable, Tracker & More

Choosing the right mortgage is one of the most important financial decisions you will make when buying a home. With so many types available, it can be difficult to know which one suits your situation. This guide explains every major mortgage type available in the UK, their pros and cons, and how to decide which is right for you.

Repayment vs Interest-Only: The Two Core Structures

Before looking at interest rate types, it is important to understand the two fundamental ways a mortgage can be structured.

Repayment Mortgage

With a repayment mortgage, your monthly payment covers both the interest on the loan and a portion of the capital (the amount you borrowed). Over the full mortgage term - typically 25 to 35 years - you gradually pay off the entire loan. At the end of the term, you own your home outright with no debt remaining. This is the most common type of mortgage in the UK and is recommended for most buyers because it guarantees the loan will be fully repaid.

Interest-Only Mortgage

With an interest-only mortgage, your monthly payments only cover the interest charges. You do not pay off any of the capital during the mortgage term. At the end of the term, you still owe the full amount you originally borrowed and need a separate repayment strategy - such as savings, investments, or selling the property. Interest-only mortgages are much harder to obtain today than they were before 2008, and lenders require you to demonstrate a credible repayment plan.

Monthly payments on interest-only mortgages are significantly lower, which is why they appeal to some borrowers. However, the total cost over the life of the mortgage is higher because you never reduce the capital balance. They are most commonly used by buy-to-let investors or borrowers with substantial assets.

Fixed-Rate Mortgages

A fixed-rate mortgage locks your interest rate for a set period - usually two, three, or five years, though some lenders offer seven or even ten-year fixes. During this period, your monthly payments stay exactly the same regardless of what happens to the Bank of England base rate or the wider economy.

Pros:

• Complete payment certainty - easy to budget around
• Protection against interest rate rises
• Peace of mind, especially for first-time buyers
• Wide availability across all lenders

Cons:

• You will not benefit if interest rates fall during your fixed period
• Early repayment charges (ERCs) typically apply if you want to exit the deal early
• Fixed rates are often slightly higher than initial variable or tracker rates
• You need to remortgage when the fixed period ends, or you fall onto the lender's standard variable rate

Fixed-rate mortgages are the most popular choice in the UK. In 2026, around 85-90% of new mortgages are fixed-rate deals, with the two-year and five-year fixes being the most common. A two-year fix offers flexibility to remortgage sooner, while a five-year fix provides longer stability.

Variable-Rate Mortgages

Variable-rate mortgages have interest rates that can go up or down over time. There are several types:

Standard Variable Rate (SVR)

Every lender has a standard variable rate - their default rate that you move onto after your initial deal (fixed, tracker, or discount) expires. SVRs are set by the lender and can change at any time, often without following the Bank of England base rate exactly. SVRs are almost always higher than introductory rates, so most borrowers remortgage before their deal ends to avoid paying the SVR.

Tracker Mortgage

A tracker mortgage has an interest rate that follows the Bank of England base rate by a set margin. For example, a tracker might be "base rate + 1.0%," meaning if the base rate is 4.5%, you pay 5.5%. If the base rate drops to 4.0%, your rate automatically falls to 5.0%.

Pros:

• Transparent - you always know how your rate is calculated
• You benefit immediately when the base rate falls
• Often lower initial rates than fixed deals

Cons:

• Your payments increase when the base rate rises
• Harder to budget with uncertain monthly costs
• Some trackers have a "collar" - a minimum rate below which your rate will not fall

Discount Mortgage

A discount mortgage offers a rate that is a set percentage below the lender's SVR for an introductory period. For example, "SVR minus 2%" for two years. Unlike trackers, discount mortgages follow the lender's SVR rather than the base rate, which means the lender has more control over your rate. If they increase their SVR, your rate goes up too - even if the base rate has not changed.

Offset Mortgages

An offset mortgage links your savings account to your mortgage. Instead of earning interest on your savings, your savings balance is "offset" against your mortgage balance, reducing the amount you pay interest on. For example, if you have a £200,000 mortgage and £30,000 in linked savings, you only pay interest on £170,000.

Pros:

• Tax-efficient - you save mortgage interest rather than earning taxable savings interest
• You retain access to your savings for emergencies
• Can significantly reduce interest costs over the mortgage term

Cons:

• Usually higher interest rates than standard fixed or tracker deals
• Fewer lenders offer offset products
• You need substantial savings to see a meaningful benefit

How to Choose the Right Mortgage

The best mortgage type depends on your personal circumstances, risk tolerance, and financial goals. Here are some guidelines:

• First-time buyers typically benefit from a fixed-rate mortgage, especially a two or five-year fix. The payment certainty makes budgeting easier when you are adjusting to homeownership costs.
• If you think rates will fall, a tracker mortgage lets you benefit from base rate reductions automatically. However, you need to be comfortable with the risk that rates could also rise.
• If you have significant savings, an offset mortgage could save you thousands in interest over the mortgage term while keeping your savings accessible.
• If you plan to sell or move within two years, a shorter fix or a variable-rate product with no early repayment charges may be more suitable.
• If you want long-term stability, consider a five or ten-year fix. You pay a small premium for the certainty, but you are protected against rate rises for a longer period.

Current Market Context (2026)

As of early 2026, the Bank of England base rate has stabilised after significant rises in 2022-2023. Fixed mortgage rates have come down from their peaks and are typically available between 4% and 5.5% depending on your deposit size and credit profile. Many economists expect gradual base rate cuts through 2026, which could benefit those on tracker mortgages.

When comparing mortgage deals, always look at the overall cost - including arrangement fees, valuation fees, and any early repayment charges - rather than just the headline interest rate. A mortgage with a slightly higher rate but no fees can sometimes work out cheaper overall.

When to Seek Professional Advice

A mortgage is likely the largest financial commitment you will make. While guides like this provide a solid overview, a qualified mortgage broker can search the whole market for you, access exclusive deals, and recommend the best product for your specific situation. This is especially valuable if you are self-employed, have a complex income, or need a specialist product. Many brokers offer a free initial consultation, and their fee is often worth the savings they find.