Mortgage Types Explained

Understanding Your Options

Mortgage product jargon can obscure what are actually fairly straightforward concepts. According to UK Finance data, around 95% of new mortgages are fixed rate—but that doesn't mean fixed is automatically right for everyone. Compare 2-year vs 5-year fixed mortgages with detailed data.

The key is this: understanding the different types helps you make a decision that matches your circumstances, not just follow the crowd.

Here's a breakdown of each type, showing the real trade-offs rather than just the marketing pitch.

Fixed Rate Mortgages

A fixed rate mortgage does exactly what it sounds like: your interest rate stays the same for a set period, regardless of what happens to interest rates in the wider economy.

How They Work

You agree a rate—say 4.5%—for a fixed term of 2, 3, 5, or sometimes 10 years. During that period, your monthly payment never changes. If the Bank of England raises rates, yours stays the same. If they fall, yours also stays the same.

At the end of the fixed period, you'll typically move to the lender's standard variable rate (more on that below) unless you remortgage to a new deal.

2-Year vs 5-Year vs Longer

The most common choice is between 2-year and 5-year fixes. The data shows a clear pattern:

The honest answer is that nobody can reliably predict whether a 2-year or 5-year fix will work out cheaper over time. The 5-year gives you certainty; the 2-year gives you flexibility. Choose based on your need for predictability, not rate predictions.

Advantages

• Payment certainty — You know exactly what you'll pay each month
• Budgeting simplicity — No surprises in your housing costs
• Protection from rate rises — If rates increase, you're unaffected
• Peace of mind — Particularly valuable when finances are stretched

Disadvantages

• Early repayment charges (ERCs) — Typically 1-5% of the loan if you exit early
• Miss out if rates fall — You can't benefit from dropping rates
• Less flexibility — Moving home or overpaying significantly can trigger charges
• Usually slightly higher rates — Than equivalent variable products

Who Fixed Rates Suit

Fixed rates typically suit:

• First-time buyers stretching their budget
• Those who value certainty over potential savings
• People with limited financial buffer for payment increases
• Anyone planning to stay put for the fixed term

Tracker Mortgages

Tracker mortgages have an interest rate that moves in line with a reference rate—almost always the Bank of England base rate.

How They Work

Your rate is set as the Bank of England base rate plus a fixed margin. For example, "base rate + 1%" means if the base rate is 4%, you pay 5%. If the base rate rises to 4.5%, you pay 5.5%. If it falls to 3.5%, you pay 4.5%.

The direct link means your payments move predictably with Bank of England decisions.

Collars and Caps

Some tracker mortgages include:

• Collar — A minimum rate below which yours won't fall, even if the base rate does
• Cap — A maximum rate above which yours won't rise

Caps are rare and usually come with higher starting rates. Collars are more common and can limit your benefit if rates fall significantly.

Advantages

• Transparency — You know exactly why your rate is what it is
• Benefit from rate falls — Payments drop when Bank of England cuts rates
• Often lower initial rates — Than equivalent fixed products
• Sometimes fewer ERCs — Some trackers have no early exit penalties

Disadvantages

• Payment uncertainty — Your payment can increase
• Rate rise exposure — If Bank of England raises rates, so does your payment
• Budget unpredictability — Harder to plan long-term
• Potential stress — Watching rate decisions becomes relevant to your finances

Who Trackers Suit

Trackers typically suit:

• Those with financial buffer to absorb increases
• People who believe rates will fall or stay stable
• Those who want transparency over predictability
• Buyers who might move or remortgage early (if no ERCs)

Standard Variable Rate (SVR)

The SVR is a lender's default rate—the rate you'll typically move to when a fixed or tracker deal ends.

What It Is

Every lender sets their own SVR. It's influenced by the Bank of England base rate, but the lender can change it whenever they choose, by whatever amount they decide. There's no fixed relationship.

Why It's Usually Expensive

SVRs are consistently higher than fixed or tracker deals. The gap is typically 2-4 percentage points. On a £200,000 mortgage, that's roughly £200-400 extra per month compared to a competitive fixed rate.

Lenders have little incentive to make SVR attractive—they'd rather you either stay on it (profitable for them) or actively choose one of their new deals.

When You End Up on SVR

You'll move to SVR when:

• Your fixed or tracker term ends
• You don't remortgage to a new deal
• You're between deals during a house move

What to Do About It

The key point: remortgage before your current deal ends. Start looking at options 3-4 months before your fixed term expires. The remortgage process takes 4-8 weeks, so this timing gives you buffer without wasting money on SVR.

Discount Mortgages

Discount mortgages offer a reduction from the lender's SVR for a set period.

How They Work

Instead of tracking the Bank of England rate, these track the lender's SVR. If the SVR is 6% and you have a 1.5% discount, you pay 4.5%. If the lender raises their SVR to 7%, you pay 5.5%.

Discount from What?

This is the crucial question. The discount is from SVR, which the lender controls. Unlike trackers (where the Bank of England sets the reference rate), the lender can change SVR at any time by any amount.

Comparison to Tracker

Who Discount Rates Suit

Discount rates suit those who:

• Are comfortable with variable payments
• Trust their lender's SVR behaviour
• Want lower initial rates than fixed
• Understand the difference from trackers

Offset Mortgages

Offset mortgages link your savings to your mortgage, reducing the interest you pay.

How They Work

Your savings sit in an account linked to your mortgage. You don't earn interest on the savings, but you also don't pay mortgage interest on that amount. If you have a £200,000 mortgage and £30,000 in savings, you only pay interest on £170,000.

Tax Efficiency

Here's what that actually means for higher-rate taxpayers: savings interest is taxed, but mortgage interest savings aren't. If you'd earn 4% on savings but pay 40% tax, your effective return is 2.4%. Offsetting against a 4% mortgage gives you the full 4% benefit.

Advantages

• Tax-efficient — Particularly for higher earners
• Savings accessible — You can withdraw if needed
• Flexible overpayment — Savings effectively overpay without commitment
• Interest reduction — Can significantly reduce total interest paid

Disadvantages

• Higher rates — Typically 0.2-0.5% more than standard mortgages
• Need substantial savings — Minimal benefit with small savings
• Complexity — More moving parts than standard mortgages
• No savings interest — You give up any return on linked savings

Who Offset Suits

Offset mortgages typically suit:

• Higher-rate or additional-rate taxpayers
• Those with significant savings
• Self-employed people holding tax reserves
• Anyone who wants flexibility without commitment

Interest-Only vs Repayment

Beyond the rate type, you need to choose between interest-only and repayment mortgages.

Repayment Mortgages

With repayment mortgages, your monthly payment covers both interest and a portion of the loan itself. By the end of the term, you've paid off the entire mortgage.

The numbers show that in early years, most of your payment goes to interest. This gradually shifts until, in the final years, most goes to capital repayment. This is called amortisation.

Interest-Only Mortgages

With interest-only, your monthly payment covers only the interest. The original loan amount remains unchanged throughout the term. At the end, you must repay the full original amount.

Why Interest-Only Is Harder to Get

Lenders have tightened interest-only criteria significantly. You'll typically need:

• A credible repayment plan (investments, other property sale, pension)
• Lower loan-to-value (often maximum 75%)
• Higher income thresholds
• Evidence of the repayment vehicle's value

Hybrid Options

Some lenders offer part-and-part mortgages: part interest-only, part repayment. This can balance lower payments with some capital repayment.

Comparing Mortgage Types

Mortgage Types Comparison

Type	Rate Certainty	Payment Stability	Flexibility	Best For
Fixed	High	High	Low	Certainty seekers
Tracker	Medium	Low	Often higher	Rate optimists
SVR	Low	Low	Usually high	Nobody (avoid)
Discount	Low	Low	Varies	Variable seekers
Offset	Medium	Depends on type	High	Tax-efficient savers

Decision Framework

Ask yourself these questions:

1. How important is payment certainty? If very important, lean towards fixed.
2. Do you have buffer for payment increases? If not, fixed is safer.
3. How long will you stay in this property? Longer stays favour longer fixes.
4. What's your view on rates? (But remember, predictions are unreliable.)
5. Do you have significant savings? Consider offset if yes.

Current Rate Context

Interest rates fluctuate based on economic conditions. When I write this, rates are in a particular range—but by the time you read it, they may have moved. What matters is the relative position of different products and how they match your needs, not the absolute numbers.

How to Choose

The right mortgage type depends on your personal circumstances, not abstract optimisation.

Your Risk Tolerance

If the thought of your mortgage payment increasing keeps you awake at night, that's valuable information. The mathematical "best" choice is meaningless if it causes you stress. The peace of mind from fixed rates has genuine value.

Your Plans

If you're likely to move within 2-3 years, a shorter fix or a product with no early repayment charges might suit better. If you're settling for the long term, locking in for 5 years provides stability.

Your Budget Flexibility

Can you absorb a £100-200 monthly payment increase without significant lifestyle impact? If yes, variable products are more viable. If no, fix for protection.

When to Get Advice

If your situation involves any complexity—self-employment, multiple income sources, previous credit issues, buying with family help—professional mortgage advice is worthwhile. A good broker can navigate the options far more efficiently than you can alone.

Can I switch mortgage types mid-term?

You can remortgage to a different product type, but if you're within a fixed term or other deal period, you'll likely face early repayment charges. These are typically 1-5% of the loan amount. Check your mortgage terms for the specific penalty before switching.

What happens at the end of my fixed term?

You'll automatically move to your lender's standard variable rate (SVR), which is almost always higher than competitive deals. Start looking at remortgage options 3-4 months before your fixed term ends to ensure you have a new deal in place.

Should I fix for longer in uncertain times?

The honest answer is there's no objectively correct answer. Longer fixes provide more certainty but at typically higher rates and less flexibility. The question is how much you value that certainty. If uncertainty about payments would cause you stress, longer fixing makes sense regardless of rate predictions.

Are offset mortgages worth the higher rate?

It depends on your tax position and savings amount. For higher-rate taxpayers with substantial savings (£20,000+), the tax efficiency often outweighs the rate premium. For basic-rate taxpayers or those with limited savings, standard mortgages are usually better. Run the numbers for your specific situation.

Why do lenders offer so many types?

Different products suit different risk profiles and preferences. Lenders want to attract a range of customers. Fixed rates appeal to the majority seeking certainty; variable products attract those comfortable with some risk in exchange for potentially lower costs or more flexibility.

What the Numbers Can't Tell You

I've given you the data and frameworks. But the numbers can't capture how you'll feel when interest rates are announced on the news, or how payment uncertainty affects your relationship with money.

The "optimal" choice mathematically might not be the right choice for you psychologically. Both matter.