Is paying off early worth the penalty?

Early Repayment Charges (ERCs) are fees lenders charge for paying off a loan or mortgage ahead of schedule. Typical ERCs run 1-5% of the outstanding balance, declining over time. For a 200,000 mortgage at a 3% ERC, repaying early costs 6,000 - which may or may not be worth it depending on interest saved.

This calculator compares ERC cost against interest saved from early repayment. Enter outstanding balance, ERC percentage, months remaining, and monthly interest saved by paying off early. The tool shows net benefit and break-even months.

Early repayment usually makes sense in the final 6-12 months of an ERC period, or when refinancing to a significantly lower rate. It rarely makes sense in the first 1-2 years of a typical 5-year fixed, because the ERC exceeds the interest you'd save by paying off early.

Run it with sensible defaults

Using outstanding loan balance of 150,000, erc percentage of 3%, months remaining on deal of 24, monthly interest saved of 200, the calculation works out to 300.00. Nudge the inputs toward your own situation and the output recalculates instantly. The defaults are meant as a starting point, not a recommendation.

The levers in this calculation

The inputs — Outstanding Loan Balance, ERC Percentage, Months Remaining on Deal, and Monthly Interest Saved — do not pull with equal force. Frequency and unit price pull the total in different directions. The biggest surprise for most people is how small recurring amounts compound into large annual figures — that's where this calculation earns its keep.

How the math works

ERC cost = balance × ERC%. Interest saved = monthly saving × months remaining. Net = saved - ERC. Break-even months = ERC cost / monthly saving. The working is transparent — you can verify every step yourself in the formula section below. No black box, no opaque "proprietary model".

Why payoff plans work

Debt feels overwhelming when it's an abstract total. Break it into a payoff date and a monthly figure and the problem becomes finite — you can see the finish line. That visibility is what this tool provides, and for many people it's the difference between dithering and acting.

What this doesn't capture

Real payoff journeys include missed payments, fee changes, balance transfers, and promotional rates that reset. The calculation assumes a steady plan; reality is rarely that clean. Use the figure as the best-case plan against which actual progress gets measured.