The Central Bank has decided not to change the core elements of its mortgage rules after it conducted a recent review of all measures.
The regulator said the loan-to-income and loan-to-value limits will remain unchanged for next year.
However, minor amendments have been made to the mortgages that can be issued outside of the lending restrictions.
Currently, first-time buyers can borrow up to 90% of the value of a property, with a limit of 3.5 times their incomes. This will remain unchanged for 2018.
Second and subsequent buyers can borrow up to 80% of the value of a property. Banks are allowed to make exceptions to this rule in 20% of cases. From January, this will be reduced to 10% of cases.
The equivalent exception rate for first-time buyers remains at 20% of cases.