Mortgage Types: Different Types of Mortgages

Buying a home usually means taking on a long-term debt, so the “type” of mortgage you choose matters. Different mortgages can affect:

How your monthly payments are calculated
How predictable your costs are
What happens if interest rates change
Whether the mortgage suits your circumstances (for example, first-time buyers, self-employed borrowers, or non-standard properties)

While lenders and products vary, most mortgages fall into a few broad categories. Understanding them can make it easier to compare options and discuss your situation with a mortgage adviser.

Important: This guide is educational. Mortgage availability and terms depend on lender criteria and your personal circumstances.

Mortgage basics: what changes between mortgage types?

Most mortgages differ in a few main ways:

How you repay the loan (repayment vs interest-only)
How the interest rate behaves (fixed, variable, tracker, etc.)
Whether your mortgage includes flexibility (for example, overpayments, payment holidays, borrowing back)
How the mortgage is structured (offset, joint, guarantor, specialist products)
Whether it’s designed for a specific purpose (for example, buy-to-let)

Understanding these differences helps you narrow down options before you look at affordability and lender requirements.

Mortgage repayment methods

The first big decision is usually how you repay the mortgage over the term. In the UK, the most common options are:

Capital repayment mortgages

With a capital repayment mortgage, each monthly payment typically covers both:

Interest (the cost of borrowing)
Capital (the amount you borrowed)

Over time, the capital balance reduces, and the mortgage is designed to be repaid in full by the end of the term.

Interest-only mortgages

With an interest-only mortgage, your monthly payments cover interest only. The original loan amount still needs to be repaid at the end of the term using a separate plan.

This repayment plan might involve savings, investments, or the sale of the property. Because the lender expects the capital to be repaid later, interest-only mortgages often come with additional requirements and scrutiny.

There are also variations such as retirement interest-only, where repayment is linked to later life events (for example, when the property is sold or after death).

Part and part mortgages

A part and part mortgage combines the two approaches. You repay some of the mortgage as capital and interest, and the rest as interest-only.

This can be useful if you want a balance between affordability now and reducing the overall risk of having to repay a large capital sum at the end.

Interest rate types: fixed and variable

The next key factor is how the interest rate behaves.

Fixed-rate mortgages

A fixed-rate mortgage has an interest rate that stays the same for a set period—commonly 2, 5, or 10 years (the exact term depends on the deal).

Potential benefits

More payment stability during the fixed period
Easier budgeting because the interest rate doesn’t change in that time

Potential trade-offs

If rates fall, you may not benefit until the fixed period ends
Switching before the end of the fixed term can involve early repayment charges (where applicable)

Variable-rate mortgages

A variable-rate mortgage means the interest rate can change. It may move in line with:

The lender’s standard variable rate (SVR), or
A reference rate such as the Bank of England base rate (depending on the product)

Variable-rate mortgages can suit borrowers who are comfortable with the possibility of payment changes.

Tracker mortgages

A tracker mortgage is a type of variable-rate deal where the interest rate is linked to a reference rate (often the Bank of England base rate) plus or minus a margin.

If the reference rate changes, your mortgage rate can change too.

Discount mortgages

A discount mortgage offers a reduction from the lender’s SVR for an initial period. After the discount period ends, the mortgage typically reverts to the lender’s SVR.

Standard Variable Rate (SVR) mortgages

An SVR mortgage is set by the lender and can change at their discretion (subject to regulatory and contractual terms). SVR rates are often less predictable than tracker or fixed-rate options.

Many borrowers aim to avoid being on SVR for longer than necessary by planning ahead for when their current deal ends.

Capped rate mortgages

A capped rate mortgage is also linked to a reference point (similar to tracker or variable structures), but with a maximum interest rate for a set period.

This can provide a level of reassurance: even if the reference rate rises, the mortgage rate won’t exceed the agreed cap during the capped period.

Why people choose it: A balance between tracking market movements and limiting the downside during the capped term.

Capped rate trade-offs

Some protection against rate rises due to the cap.
You may still benefit when rates fall.
Caps often come with trade-offs, such as a higher starting rate compared with some other variable deals.

Offset mortgages

An offset mortgage links your mortgage to savings held in an account (often with the same provider). The savings are used to reduce the amount of mortgage balance that interest is charged on.

For example, if your mortgage balance is £200,000 and you have £10,000 in linked savings, interest may be calculated as if the mortgage balance were £190,000.

Why people choose it: Potential interest savings if you have meaningful savings that you can keep accessible.

Important considerations: Offset mortgages may have different pricing and rules compared with standard repayment or interest-only products, so it’s worth understanding how the offset is calculated and what happens if savings reduce.

Offset mortgages: how it works

Your savings may be used to reduce the amount of mortgage interest you’re charged on.
In effect, you may pay interest on the “net” balance (mortgage minus eligible savings), depending on the product rules.

Offset mortgages: potential benefits

May reduce interest costs if you keep savings in the offset account.
Can help some borrowers manage mortgage costs alongside savings.

Offset mortgages: potential drawbacks

Savings may not earn interest in the usual way, depending on how the offset account is set up.
Offset arrangements can be more complex than standard mortgage structures.

Specialist mortgages

Mainstream mortgages aren’t always the best fit for every situation. Specialist mortgages are designed for borrowers with particular needs or circumstances.

Bad credit mortgages

If you have a less straightforward credit history—such as missed payments, a County Court Judgment (CCJ), or other adverse markers—some lenders offer products intended for these scenarios.

These mortgages may come with different pricing, deposit expectations, or underwriting approaches compared with standard deals.

Self-employed mortgages

Self-employed borrowers often need to show income in a way that differs from traditional PAYE employment. Specialist products may consider income based on accounts and trading history.

The key is usually demonstrating that income is reliable enough to meet mortgage repayments.

Buy-to-let mortgages

A buy-to-let mortgage is for purchasing a property to rent out. These are typically assessed differently from residential mortgages, with lender calculations often focusing on expected rental income.

Buy-to-let mortgages are often structured as interest-only, but the exact approach depends on the product and lender.

The Financial Conduct Authority does not regulate some forms of buy-to-let.

Examples of situations where specialist lending may be relevant

Adverse credit circumstances
Expat or overseas income scenarios
Discount-off-market value purchases
High-value / large loan requirements
Self-employed income structures
New build purchases

Specialist products can be helpful, but they often come with additional documentation and lender-specific processes.

95% mortgages

A 95% mortgage typically means a borrower puts down a 5% deposit, with the lender providing 95% of the property value.

Key considerations:

Higher loan-to-value borrowing can come with higher interest rates and stricter affordability checks.
With a smaller deposit, it may take longer to build equity.

100% mortgages (high risk / limited availability)

A 100% mortgage is designed to let you borrow the full purchase price without a traditional deposit.

In practice, these products are often rare and may involve additional arrangements (for example, guarantor structures). They can also carry higher risk for borrowers, particularly if property values fall.

Why people consider them: When a deposit is the main barrier to buying.

Key risks to understand: If the property value drops, you could end up owing more than the property is worth, which can make future options such as moving home or remortgaging more difficult.

Flexible mortgages

A flexible mortgage is designed to give borrowers more control over repayments.

Depending on the lender/product, flexibility may include options such as:

Overpayments (repaying extra when you can)
Underpayments or payment holidays (where permitted)
Borrowing back after overpaying (on some products)

Trade-off to consider: flexibility often comes with additional conditions and may increase the overall cost compared with a more standard product.

Let-to-buy mortgages

A let-to-buy arrangement can be relevant for homeowners who want to move but may not be able to sell immediately.

The property you currently own is rented out.
In parallel, you take out a mortgage on the property you plan to live in.

These arrangements can be complex, particularly around rental income assumptions and how both mortgages are managed.

Joint mortgages

A joint mortgage is taken out by two or more people.

The borrowers share responsibility for repayments.
The property equity is typically split according to the arrangement.

Why people choose it: combining incomes and/or deposits can make it easier to meet affordability requirements.

Guarantor mortgages

A guarantor mortgage can be used when a borrower may not be able to secure a mortgage on their own.

A guarantor provides additional support if repayments are not met.
The guarantor may be required to put funds aside or offer security, depending on the structure.

This type of mortgage can help some borrowers access borrowing they otherwise might not qualify for, but it creates a significant financial commitment for the guarantor.

Government-backed mortgage schemes (where available)

Some mortgage routes are designed to help people who may find it harder to save a deposit or meet affordability requirements. Government-backed schemes can change over time, so it’s important to confirm what’s currently available.

Common examples include:

Shared Ownership: buying a share of a home and paying rent on the remainder, with the option to increase your share over time.
Right to Buy / Right to Acquire: discounts for eligible tenants of certain housing providers.
Mortgage Guarantee-style support: aimed at enabling higher loan-to-value lending for eligible borrowers.
First Homes-style schemes: designed to support eligible first-time buyers and key workers with discounted purchase prices.

These schemes can affect the type of mortgage you’re offered and the process around the purchase.

Niche mortgages for specific property or borrowing needs

Some mortgages are created for unusual properties or particular financial strategies.

Unencumbered property mortgages

An unencumbered mortgage is typically used when you already own a property outright (or have no mortgage on it) and want to release equity.

This can be relevant for renovation plans, debt consolidation, or buying another property.

Non-standard construction mortgages

Some homes—such as those with unusual building methods or materials—may not fit standard lender criteria. Specialist lenders may consider these properties if they can assess the risks appropriately.

Family support options

Where a borrower needs additional help to meet affordability or deposit requirements, some structures involve support from a family member. The exact approach depends on the arrangement and lender rules.

How to match a mortgage type to your situation

Different mortgage types can suit different priorities. When thinking about which option may fit best, consider:

Your repayment preference: capital repayment, interest-only, or part and part
Your comfort with rate changes: fixed for stability, variable for flexibility
Your income profile: PAYE employment versus self-employed income
Your property type: standard residential versus non-standard construction
Your deposit and scheme eligibility: including government-backed routes where relevant

A mortgage adviser can help you narrow down options by explaining how lenders typically assess affordability and risk for your circumstances.

How to choose the right rate type for you

There isn’t a single “best” mortgage rate type for everyone. The most suitable option usually depends on how you balance certainty, potential savings, and your ability to absorb changes in repayments.

1) Consider your risk tolerance

Lower risk tolerance / need for certainty: a fixed rate is often a better fit because it reduces the chance of repayment surprises during the fixed term.
Moderate risk tolerance / willingness to accept movement: a tracker rate may suit borrowers who want a link to a known benchmark and can manage potential increases.
Higher risk tolerance / comfort with variability: a variable rate may be suitable for borrowers who can handle repayment changes and are prepared to review options if rates move.

2) Think about your income and budgeting buffer

Ask yourself how easily you could manage if your repayments increased.

If your household budget is tight, repayment stability can be particularly important.
If you have a stronger buffer or flexible income, you may be better placed to manage potential changes.

3) Review your likely time in the property

Your plans can influence which rate type makes the most sense.

Staying put for the long term: fixing can provide stability and help with long-range financial planning.
Expecting to move, remortgage or refinance sooner: you may prefer a rate type that aligns better with your timeline and avoids unnecessary lock-in.

4) Consider how you would respond if rates move

It’s helpful to consider scenarios in advance:

If rates rise, would you be able to cope with higher repayments?
If rates fall, would you have the option and willingness to switch products when the opportunity arises?

How to compare mortgage deals properly

When comparing mortgage options, it’s easy to focus on the headline interest rate. However, two mortgages with similar rates can have different overall costs and different levels of flexibility.

Look beyond the headline rate

Key comparison points include:

APRC (Annual Percentage Rate of Charge): reflects the overall cost of the mortgage, taking account of fees and the interest rate over the product term.
Arrangement fees: some deals include higher upfront costs that can offset a lower rate.
Early repayment charges: if you might remortgage, move house, or repay more than planned, check what it would cost to do so.
Overpayment rules: consider whether you can make additional payments and whether there are any limits or penalties.

Think about your “what if” scenarios

A helpful way to compare is to ask:

If rates rise, can I still afford the repayments?
If rates fall, would you benefit enough to justify the uncertainty (for variable or tracker deals)?
If I need to move sooner than expected, do the product terms support that plan?

Common misconceptions

“Fixed means forever.” Fixed deals only last for the fixed period; after that, you’ll move to a new rate.
“Interest-only is always cheaper.” It can be cheaper monthly, but you still need a credible capital repayment plan.
“Tracker always saves money.” It can help if rates fall, but payments can increase if rates rise.

Common mistakes to avoid

Even well-prepared borrowers can run into issues when choosing a mortgage. Common pitfalls include:

Choosing based on rate alone: fees, flexibility and repayment terms can change the true cost.
Ignoring what happens after the initial deal: the follow-on rate can materially affect affordability.
Underestimating payment risk: variable and tracker mortgages can increase if rates rise.
Not checking early repayment terms: if your plans change, charges can be significant.
Stretching affordability: repayments should remain manageable even if circumstances change.

Mortgage rates and deal changes: planning for the future

Many mortgage deals are time-limited. Even if you choose a fixed or discounted product, you’ll usually face a decision later—such as moving to a new deal or accepting a lender’s standard rate.

A practical approach is to think about:

how your payments might change after the initial period
whether you’ll have a plan to review your mortgage when the deal ends

Common mortgage types at a glance

Capital repayment: pays off the loan over time through capital + interest
Interest-only: pays interest monthly; capital repaid via a separate plan
Part and part: mix of capital repayment and interest-only
Fixed-rate: rate stays the same for an agreed period
Tracker/discount/SVR: variable-rate structures linked to references or lender rates
Specialist: tailored for situations like self-employment, credit issues, or buy-to-let
Government-backed schemes: may support eligible buyers with deposit or purchase assistance
Niche: for non-standard properties or equity-release scenarios

Summary: matching the rate type to your needs

Choose fixed if you value predictability and want protection from rate rises during the fixed term.
Choose tracker if you want a mortgage that follows a known benchmark and you can handle possible increases.
Choose variable if you’re comfortable with lender-set changes and can manage repayment variability.

Understanding how each rate type behaves can help you narrow down the options that best match your budgeting needs, risk tolerance and expected time in the property.

Key takeaway

There isn’t one “best” mortgage type for everyone. The right choice depends on how you want repayments to work, how you feel about interest rate changes, and whether your circumstances fit mainstream lender criteria. Understanding the main mortgage categories can make it easier to compare products and plan your next steps with confidence.