@masterboy123 It seems that there are two separate actions that you are considering taking.
1) You are thinking about attempting to "restart the clock" on your 5-year green fixed rate. This comes with a risk (that AIB will increase their rates between the time you send the form and the time that they process it), so think twice about doing this.
2) You want to pay a lump sum off your mortgage. See
here for how to do that. Note that you will not lose your 2.15% fixed rate if you do this. You should get a break fee quote from AIB before you make the lump sum overpayment (but in your case the break fee is very likely to be zero).
Keep in mind that overpaying your mortgage/reducing your balance may not be the best use of your money. Your priorities should usually be:
- Paying off expensive debt (credit cards, personal loans, car loans, etc.)
- Building up an emergency fund in a savings/current account (3 to 6 months' living expenses)
- Saving money for any expenses you will have over the next few years (kids; buying a car; childcare; home renovations; adult children going to college, etc.)
- Maxing out your pension contributions (very large tax relief is given)
- Overpaying your mortgage
in approximately that order. Consider posting a thread about your situation in the
Money Makeover forum.