Choosing the right mortgage isn’t always about picking a single rate type. For many homeowners and buyers, a split mortgage – where part of the loan is on a fixed rate and part on a tracker mortgage – can offer the perfect balance of security and flexibility.
This approach is particularly effective if you want to secure a mortgage rate now, while knowing you’ll receive a future lump sum that you plan to use to pay off part of your mortgage.
In this guide, we explain how a fixed and tracker split mortgage works, its key benefits, and who it’s best suited for.
What Is a Split Mortgage?
A split mortgage divides your mortgage into two parts, each with different interest rates and features. A common structure is:
- Fixed-rate mortgage portion – stable monthly payments with limited/no overpayments
- Tracker mortgage portion – follows the Bank of England or lending Bank’s base rate and may allow unlimited overpayments without penalty
Both parts sit under one overall mortgage but are designed to meet different financial goals.
Benefits of Fixing Part of Your Mortgage
Fixing a portion of your mortgage provides certainty and protection against interest rate rises.
Key advantages include:
- Predictable monthly payments during the fixed term
- Protection from rising interest rates on the fixed portion
- Easier budgeting and long-term financial planning
For many borrowers, fixing part of the mortgage offers peace of mind, especially in uncertain economic conditions.
Why Choose a Tracker Mortgage for the Other Part?
A tracker mortgage adds flexibility to your overall mortgage setup.
Benefits include:
- Interest rate moves in line with the Bank of England or lending Bank’s base rate
- Unlimited overpayments in most cases
- Little to no early repayment charges
This makes the tracker portion ideal if you expect to make large overpayments or fully repay that part of the mortgage in the future.
Ideal Mortgage Setup for Future Lump Sums
A fixed and tracker split mortgage is especially well suited if you’re expecting a lump sum, such as:
- A bonus or commission
- Inheritance
- Business profits or dividends
- Sale of another property
By directing the lump sum to the tracker portion, you can likely reduce your mortgage balance without early repayment penalties, saving interest and potentially shortening your mortgage term.
The Best of Both Worlds: Security and Flexibility
This type of mortgage structure gives you:
- 🔒 Fixed-rate security on part of your mortgage
- 🔄 Tracker flexibility for overpayments
- 💷 Control over how and when you reduce your mortgage balance
Rather than trying to time the market, a split mortgage is about building a mortgage strategy around your real-life plans.
Is a Split Mortgage Right for You?
A split mortgage isn’t suitable for everyone. Tracker rates can rise as well as fall, and fixed-rate mortgages usually have overpayment limits.
That’s why personalised mortgage advice is essential to ensure this setup aligns with your goals and risk tolerance.
Final Thoughts
If you want to lock in a mortgage rate now but retain the freedom to make significant overpayments later, a fixed and tracker split mortgage could be an excellent option.
At MPC Mortgages, we help clients create mortgage solutions that support both short-term security and long-term flexibility.
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If you’d like advice on whether a split mortgage could work for you, get in touch today.
Your Home (or property) may be repossessed if you do not keep up repayments on your mortgage or any other debts secured on it.
A fee may be charged for mortgage advice. The exact amount will depend on your circumstances.
MPC Mortgages Limited is an Appointed Representative of The Right Mortgage Ltd, which is authorised and regulated by the Financial Conduct Authority. Registered in England and Wales no. 16290498.