This calculator supports UK/US assumptions only. Choose the applicable market in the calculator or its named UK/US tool. Israeli rules are not implemented.
Property · 05
The classic dilemma. The maths comes down to a guaranteed mortgage rate against an uncertain expected return. Both numbers, side by side.
Better choice over the term
$20,186 difference at year 20
Overpay net wealth
$210,835
Invest net wealth
$231,020
Roughly a tie. The two paths produce similar wealth at term-end. Decide on temperament, certainty of a paid-off mortgage versus optionality of investments.
Illustrative figures only. The model assumes constant rates and returns; real-world UK fixed-rate mortgages roll off every few years. For your specific situation, consult a qualified adviser.
Mortgage and portfolio, weighed together.
Worth coordinates debt payoff against investing across the household trajectory. The right call at each rate, the year the balance shifts. Join the waitlist.
Frequently asked questions
What about my employer pension match?
Always max the employer match first. Free contribution beats both options. Only after every available match has been captured should you compare overpayment against tax-sheltered investing with the next spare cash.
What if rates change?
The calculator assumes the current rate persists for the remaining term. In practice, UK fixed rates roll off every two to five years. If rates rise sharply, overpaying becomes more attractive; if they fall, less so. The longer the fix, the more you can rely on this calculation.
Are there overpayment penalties?
Most UK fixed-rate mortgages allow around ten per cent overpayment per year without penalty. Above that, expect early repayment charges of one to five per cent. Check your specific product terms before committing to large overpayments.
What about the psychological premium?
Some people sleep better with a paid-off mortgage even if the maths slightly favours investing. That peace of mind has real value. Just do not pretend it is free; you are paying for it in expected return. The calculator gives you the number; you decide what to do with it.