MoneyWeek Mortgage Overpayment Calculator review
A free web calculator for estimating how regular or lump-sum overpayments may change payoff timing.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
MoneyWeek Mortgage Overpayment Calculator is a free web tool embedded in a MoneyWeek mortgage advice page. It is aimed at homeowners weighing whether to make extra payments on a mortgage. The calculator helps estimate how regular monthly overpayments or a one-off lump sum may affect the mortgage balance and the time it takes to pay off the loan. That makes its purpose specific: it focuses on the consequences of overpaying, rather than covering every stage of mortgage planning. For someone who wants to explore the potential effect of an extra payment, this narrow scope can keep the task clear.
The central value is the comparison between recurring and lump-sum overpayments. Those examples address two common ways a borrower might pay more than the regular mortgage amount, while the payoff-timing estimate connects a change in balance to a practical outcome: when the loan may be cleared. The page presents the tool as a way to assess whether overpaying may be worthwhile. Treat the result as an estimate for exploring scenarios, not as a full picture of a mortgage decision. The calculator is not presented as an affordability analysis or a refinancing comparison, so borrowers considering those questions will need a different tool or source of guidance.
This is a good fit for an individual homeowner who wants a focused estimate of how extra payments may affect their balance and payoff timing. It is less suitable for someone looking for a broad mortgage planning suite, adjustable-rate scenarios, or a full amortization schedule. The editorial-page setting gives the calculator a mortgage-advice context, but its role remains that of a specific overpayment estimator. Choose it to examine regular or one-off extra-payment examples; look elsewhere when the decision depends on affordability, refinancing, or a more comprehensive schedule of repayments.
MoneyWeek Mortgage Overpayment Calculator pros and cons
- Where it wins
- Models examples of regular monthly overpayments.
- Models one-off lump-sum overpayments.
- Estimates effects on mortgage balance and payoff timing.
- Where it doesn't
- It is a focused overpayment calculator, not a broad mortgage planning suite.
- It does not provide affordability analysis.
- It does not compare refinancing options.
MoneyWeek Mortgage Overpayment Calculator fact sheet, pricing and score →
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