Move home partway through a fixed deal and you might expect to pay a penalty for leaving your mortgage early. Porting can avoid that. It lets you carry your existing mortgage and its rate to the new property, keeping the terms you signed up to. Useful as it sounds, it is not always as simple as it looks.
What porting means
A portable mortgage can move with you from one home to another. You keep your current interest rate and avoid the early repayment charge you would otherwise face for closing the loan mid-term. For anyone locked into a good fixed rate, porting can save a meaningful sum when life forces a move.
It is not automatic
Here is the catch most people miss: porting means reapplying. The lender reassesses your finances and revalues the new property, just as if you were a fresh applicant. If your income has dropped or lending rules have tightened since you first borrowed, you may not qualify on the same terms, or at all.
- Reassessment your income and circumstances are checked again
- Property must suit the lender's criteria and valuation
- Timing the sale and purchase usually need to align closely
Borrowing more or less
If your new home costs more, you may need to top up the mortgage with additional borrowing, often at a different rate, leaving you with two sub-accounts. If it costs less, you might trigger a partial early repayment charge on the portion you no longer need. Either way, ask the lender to spell out the figures.
Weigh it up
Porting shines when you hold a competitive rate and want to dodge a hefty exit fee. But compare it honestly against simply taking a new mortgage, including any fees on both sides. Sometimes the saving is real and worth the paperwork; sometimes a fresh deal works out better.