The Communications Regulator turned down An Post's request for a price increase for the basic stamp this afternoon.
However, the regulator recommended a hike in the postal cost of large envelopes and packages.
Earlier this year, An Post called for an increase in the price of stamps because of the deterioration in its financial position, as well as increased costs.
It wanted the basic stamp increased to from 48c to 60c, the price of posting a large envelope raised from 60c to 90c, and the cost of a package increased to €2.
In a paper published this afternoon, Comreg said it felt the increase in the price of a basic stamp was not justified, but that it would recommend a rise in postal costs for larger envelopes and packages.
Comreg Chairpersoin Isolde Goggin said this solution would strike a balance between protecting the service and the interests of consumers.