Lump Sum Payment
Impact of a one-off payment.
What does Lump Sum Payment mean?
A lump sum payment is a one-off extra payment made on top of your regular loan repayments. It directly reduces the outstanding principal, which means less interest accrues in future months. This can significantly shorten your loan term and save you thousands in interest. Lump sums typically come from tax refunds, bonuses, inheritance, or savings.
How to calculate Lump Sum Payment
The calculator computes your regular monthly repayment using the annuity formula, then simulates the loan amortization both with and without the lump sum applied immediately. By comparing both scenarios, it shows the time saved and interest difference. For example, applying a $25,000 lump sum to a $300,000 loan at 6% over 25 years saves approximately 2.5 years and over $40,000 in interest.
FAQ
The earlier, the better. Interest is calculated on the outstanding balance, so reducing the principal early in the loan saves more interest than the same payment later. However, any lump sum at any time will still provide savings.
Compare your loan interest rate to potential investment returns. If your loan charges 6% and you expect 5% from investments, the lump sum is the better guaranteed return. Also consider your risk tolerance and tax implications.
Usually no — the monthly payment stays the same but the loan is paid off sooner. Some lenders allow you to request a payment recalculation (re-amortization) after a lump sum, which would lower monthly payments but keep the original term.
Fixed-rate loans often limit extra repayments or charge break costs. Variable-rate loans typically allow unlimited extra payments. Always check your loan terms before making a large lump sum payment.
Absolutely. Making regular extra repayments plus occasional lump sums is the most effective strategy for paying off your loan faster. Use both calculators to see the combined impact.
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