Ireland's biggest mortgage provider Permanent TSB is increasing interest rates on a range of tracker products next month for new customers.
Mortgages will increase from 0.25% to 0.45%.
The move follows other banks which have increased rates as a result of the credit crunch.
Earlier this week, Bank of Scotland Ireland increased its mortgage rates by 0.4%.
Others who have increased rates on new business are Ulster Bank and First Active.
Banks are increasing rates because they are being charged more to borrow from other banks.
On average, since the beginning of the year, rates have risen by 0.35% due to the credit crunch.
That adds about €75 every month on to the cost of a €300,000 mortgage.
