Fixed-Rate Mortgages Explained

Fixed-Rate Mortgages

A fixed-rate mortgage keeps the interest rate unchanged for an agreed deal period. Scheduled monthly payments will normally remain stable during that period, while fees, early repayment charges, overpayment rules and the rate that follows the deal vary between products.

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What Is a Fixed-Rate Mortgage?

A fixed-rate mortgage has an interest rate that stays unchanged for an agreed deal period. Common product periods include two and five years, although other lengths may be available. The fixed period is not normally the same as the full mortgage term.

For a standard repayment mortgage with no agreed account changes, the scheduled monthly payment will normally remain the same during the fixed period. Changes such as additional borrowing, an agreed term change, a repayment-method change, arrears or certain fees can affect what is payable even while the interest rate remains fixed.

When the fixed period ends, the mortgage normally moves to a reversion rate stated in the mortgage terms unless another product is arranged. That reversion rate is often the lender's standard variable rate, but the mortgage offer should be checked.

The interest rate is fixed for the deal period — not necessarily for the full mortgage term.

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How Does the Fixed Period Work?

This is a general process illustration. The dates, notice periods, available products and charges depend on the lender and mortgage terms.

  1. 1

    Deal starts

    The mortgage begins on the agreed fixed interest rate.

  2. 2

    Fixed period

    The interest rate stays unchanged for the stated period, subject to the mortgage terms.

  3. 3

    Review before the end

    The borrower can check the current lender's product-transfer options and alternatives elsewhere, allowing time for eligibility checks and fees.

  4. 4

    After the fixed period

    The mortgage moves to the stated reversion rate unless a new product starts.

How Do Different Fixed Periods Compare?

A shorter or longer fixed period is not automatically better. The trade-off depends on the available products, fees, likely plans and tolerance for reviewing the mortgage again.

Shorter Fixed Period

Potential features

  • The mortgage is reviewed sooner
  • Any product fee may be paid again sooner if another deal is arranged
  • The borrower has less time before the reversion rate or another product decision
  • The initial rate may be higher or lower than a longer fix depending on the market

Questions to consider

  • Is a move, remortgage or change in circumstances possible during the period?
  • What ERC applies and for how long?
  • How do the product fee and total cost compare?

Longer Fixed Period

Potential features

  • The interest rate remains fixed for longer
  • The borrower may not need to review the mortgage as soon
  • An ERC or other restrictions may apply for longer
  • The initial rate may be higher or lower than a shorter fix depending on the market

Questions to consider

  • How likely is a house move, overpayment or other change during the period?
  • Is the mortgage portable and what conditions apply?
  • What happens if market rates fall?

The starting rate alone does not determine the overall cost. Fees, ERCs, the length of time in the product and the reversion terms also matter.

What Happens When the Fixed Rate Ends?

If no new product is arranged, the mortgage normally moves to the reversion rate described in the mortgage offer. This is often the lender's standard variable rate, but it may be another type of rate. The new rate and monthly payment could be higher or lower than the fixed rate.

Before the fixed period ends, a borrower may be able to consider a product transfer with the existing lender or a remortgage to another lender. Eligibility checks, affordability, fees, incentives, valuation requirements and the timing of any early repayment charge can affect the options.

There is no single review date that is right for every lender or borrower. Starting early enough to understand the available routes can help avoid an unplanned move to the reversion rate, while a new product should not be selected solely because it is available first.

Charges and Flexibility to Check

Early Repayment Charges

Many fixed-rate products include an early repayment charge during some or all of the fixed period. The charge and how it changes over time must be checked in the mortgage illustration and terms.

Overpayments

Some lenders allow a stated amount or percentage to be overpaid without an ERC, while other limits or calculation periods may apply. Overpaying above an allowance can trigger a charge.

Switching Before the Fixed Period Ends

It may be possible to change product or lender before the fixed period ends, but an ERC, exit fee, new product fee, valuation or legal cost can affect whether doing so is worthwhile.

Moving Home and Porting

A mortgage described as portable may be capable of moving to a new property, but porting is normally subject to a new application, affordability checks, property criteria and lender approval. Additional borrowing may use a different product, and porting does not guarantee that an ERC will be avoided.

When Might Someone Consider a Fixed Rate?

People explore fixed-rate products for different reasons. Whether one is suitable depends on the mortgage terms and the individual's circumstances.

Stable scheduled payments are important

Some borrowers value knowing the scheduled mortgage payment during the fixed period, particularly when planning regular household outgoings.

They prefer not to track short-term rate movements

A fixed rate does not change when Bank Rate moves during the deal period, although the borrower will not normally benefit from market-rate falls until the fixed period ends or the mortgage is changed.

Their likely plans fit the deal period

A borrower may compare the fixed period with expected plans to move, overpay, remortgage or change their borrowing. ERC and porting terms remain important.

Potential Benefits and Important Considerations

Potential Benefits

  • Stable interest rate during the deal

    The interest rate does not change during the agreed fixed period.

  • More predictable scheduled payments

    For a standard repayment mortgage without account changes, scheduled monthly payments will normally stay stable during the fixed period.

  • No direct increase when market rates rise

    A rise in Bank Rate does not change the agreed fixed interest rate during the fixed period.

Important Considerations

  • No direct benefit if market rates fall

    The agreed fixed rate normally remains in place unless the mortgage is changed, which may involve charges and new eligibility checks.

  • Early repayment charges may apply

    Changing, repaying or moving the mortgage during the charge period can create a significant cost.

  • Overpayment and porting rules vary

    A fixed rate does not guarantee a particular overpayment allowance or a penalty-free move.

  • A new decision is needed when the fix ends

    The mortgage will normally move to its reversion rate unless another product is arranged.

What Should You Check?

A headline fixed rate does not show the whole cost or how well the product fits future plans.

  • The fixed interest rate and fixed-period dates
  • The mortgage term and repayment method
  • Product, booking, valuation, legal and account fees
  • Cashback or other incentives and any conditions
  • The APRC and total cost shown in the mortgage illustration
  • The early repayment charge and how it changes over time
  • Overpayment allowances and calculation periods
  • The reversion rate and how it is determined
  • Whether the mortgage is portable and all conditions
  • How additional borrowing would be treated when porting
  • Likely plans to move, overpay or change the mortgage
  • The effect of the payment after the fixed period
  • Product-transfer and remortgage routes where relevant

This page provides general information only. If you submit an enquiry, it will be passed to Anderson Reed, whose qualified, FCA-authorised advisers may contact you and provide any regulated mortgage advice.

Frequently Asked Questions

These answers explain common fixed-rate mortgage terms in general. The mortgage offer and product terms determine how an individual mortgage works.

Is the mortgage rate fixed for the whole mortgage term?

Usually not. A fixed-rate mortgage normally fixes the interest rate for an initial deal period, such as two or five years, while the full mortgage term may last much longer.

When the fixed period ends, the mortgage generally moves to the reversion rate stated in the offer unless another product is arranged. Some longer-term fixed products may exist, but availability and terms vary.

Can my monthly payment change during a fixed period?

For a standard repayment mortgage with no agreed account changes, the scheduled payment will normally remain stable because the interest rate is fixed.

The amount payable can still be affected by events such as additional borrowing, an agreed term or repayment-method change, arrears, fees or other changes permitted by the mortgage terms.

Should I choose a shorter or longer fixed period?

Neither is automatically better. A shorter period means reviewing the mortgage sooner, while a longer period keeps the rate fixed for longer but may also extend the ERC or restriction period.

Compare the available rates, fees, ERCs, likely plans and total cost. Any personal recommendation should come from an authorised mortgage adviser after considering the individual's circumstances.

What happens when my fixed rate ends?

If no new product is arranged, the mortgage normally moves to the reversion rate described in the mortgage offer. This is often the lender's SVR, but it may be another rate.

The new rate and payment could be higher or lower. A product transfer or remortgage may be considered before the end, subject to eligibility, costs and product availability.

Can I make overpayments on a fixed-rate mortgage?

Many products allow some overpayment without an ERC, but the allowance, calculation period and exclusions vary. The mortgage terms may treat regular overpayments and lump sums differently.

Check the lender's rules before paying extra. An amount above the allowance can trigger an ERC, and overpaid money might not be available to withdraw later.

How do early repayment charges work?

An ERC may apply if the mortgage is repaid, switched or changed during a stated charge period. It is often calculated by reference to the outstanding balance and may reduce as the deal progresses, but the method varies.

The mortgage illustration should show examples and the maximum charge where applicable. Do not rely on a generic percentage when making a decision.

Can I switch from a fixed rate before it ends?

It may be possible, but an ERC, exit fee and the costs of a new product can apply. The borrower may also need to pass affordability and eligibility checks for a remortgage or product transfer.

A lower new rate does not automatically make switching worthwhile once all charges and the remaining fixed period are considered.

Can I take a fixed-rate mortgage with me when I move?

A product may be described as portable, but porting is not automatic. The lender will normally assess the new application, borrower, property and affordability under its current criteria.

Additional borrowing may need a separate product, and timing or eligibility issues can still lead to an ERC. Check the mortgage terms and speak to the lender or an authorised adviser before relying on portability.

What if fixed rates fall after I take a deal?

The agreed rate normally remains unchanged during the fixed period. Changing to another product may be possible, but an ERC and other costs can outweigh the benefit of a lower headline rate.

If a new deal has been reserved but not started, the ability to change it depends on the lender and offer terms. Do not assume a replacement is available without cost or fresh checks.

What is the difference between a fixed rate and a tracker mortgage?

A fixed rate stays unchanged for the agreed deal period. A tracker usually moves with a named reference rate, commonly Bank Rate, plus or minus a stated margin.

The fixed product gives more payment certainty during its deal period, while the tracker payment may rise or fall. Fees, ERCs, floors, overpayment rules and future plans also need comparison.

Is a product transfer the same as remortgaging?

No. A product transfer usually means changing to another product with the existing lender. A remortgage generally means replacing the mortgage, often with another lender.

The checks, fees, valuation requirements and available products can differ. Remaining with the current lender is not automatically cheaper or more suitable, and moving lender is not automatically better.

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  2. 2

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  3. 3

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