If you’re moving home in 2026, one of the first questions is usually this:
Should I port my existing mortgage — or take out a completely new one?
On the surface, porting feels simple. If your current rate is competitive, why give it up?
In practice, the decision is rarely that straightforward.
Porting doesn’t mean transferring your mortgage unchanged. It means applying again, under current lending rules, while keeping your existing product on the balance you move across.
That detail matters.
What Porting Actually Means
Porting allows you to:
- Transfer your existing mortgage rate to a new property
- Keep the remaining term and conditions on that portion
- Apply for additional borrowing if needed
However:
- You must requalify under today’s affordability checks
- The lender reassesses your income and circumstances
- Additional borrowing may be at a different rate
In 2026, affordability assessments are robust. Porting is not automatic approval.
When Porting Makes Sense
Porting can work well when:
- Your existing rate is significantly lower than current market rates
- Your circumstances haven’t changed dramatically
- The property move does not require substantial additional borrowing
- It often benefits borrowers who fixed their rate before recent market shifts.
When Starting Again May Be Better
Taking a new mortgage can be suitable when:
- Your current deal carries high early repayment charges
- You need significant additional borrowing
- Your lender’s criteria no longer suit your situation
- A more flexible product is available elsewhere
Sometimes keeping the rate is less important than choosing the right structure.
Case Studies
Case Study 1: Hannah and Luke – Exeter
Hannah and Luke secured a low fixed rate in 2023. When moving in 2026, they ported the majority of their mortgage and borrowed a smaller additional amount at a new rate.
Because their income had increased and affordability remained strong, porting protected a valuable rate without complications.
Case Study 2: Ben – Leeds
Ben assumed porting was automatic. However, after changing jobs, his affordability assessment reduced his borrowing capacity.
Rather than forcing the port, he chose a new lender better suited to his updated income structure.
Case Study 3: Amira and Faisal – Watford
Amira and Faisal needed a much larger property. The additional borrowing required was substantial, and the blended rate from porting plus new borrowing was less competitive overall.
Starting fresh with a new deal gave them clearer structure and better flexibility.
What Matters in 2026
The decision should consider:
- Early repayment charges
- Current rate versus market rates
- How much additional borrowing is required
- Changes in income or commitments
- Long-term flexibility
- Porting protects a rate. A new mortgage can protect structure.
- The right answer depends on the balance between the two.
FAQs
No. You must meet current lending criteria.
Yes, though additional borrowing may be on different terms.
Usually not, provided the mortgage is transferred correctly within lender rules.
Yes, though early repayment charges may apply.
Not always. Both require underwriting and affordability checks.
Moving home is already complex.
Reviewing whether to port or switch before committing to a property helps avoid last-minute surprises and ensures your mortgage still fits your circumstances.
