Finance & Irish taxes

Debt overpayment savings Calculator

Compare a normal debt repayment with extra payments and a lump sum. This free debt overpayment savings calculator shows the calculation and its assumptions so you can compare your own figures.

Calculated on your device

Your results

Interest Saved€563.02

Compare a normal debt repayment with extra payments and a lump sum.

Months Saved13

Calculated outcomes

New Repayment Months: 25
New Interest: €783.93
Upfront Lump Sum: €1,000.00

Assumptions and estimates

Check early repayment charges and keep enough emergency cash. Interest is calculated before each monthly payment.
Method: Run the same monthly debt model before and after the entered additional repayments.
Check early repayment charges and preserve emergency cash.

Useful next steps

Use Compare options to test an alternative side by side.
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How the debt overpayment savings calculation works

Run the same monthly debt model before and after the entered additional repayments.

Check early repayment charges and preserve emergency cash.

Using this calculator

Enter your own figures in the labelled inputs. Keep the currencies, units and time periods consistent.
Choose any applicable rate profile, pattern or assumption shown for this tool. Open additional inputs when relevant.
Review interest saved and months saved, then read the stated assumptions and eligibility conditions before using the result.

Worked example

This is a static example using illustrative inputs, not facts about you or today’s date. The displayed eligibility selections and assumptions apply only to this example.

See example inputs

Outstanding balance (€): 10000
Annual interest rate (%): 8
Normal monthly payment (€): 300
Extra monthly payment (€): 100
Immediate lump-sum payment (€): 1000

Interest Saved: €563.02
Months Saved: 13

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