A full decision will be taken by this summer
An Post is said to be considering closing more than 200 post offices around the country.
According to the Sunday Independent, the mail company now believes a plan to close just 80 outlets, as suggested in the Kerr Report, will not go far enough to address its financial problems.
The newspaper says a full decision will be taken by An Post by this summer on how it will deal with the issue.
There are currently 1,300 post offices around the country, and the company is losing around €12m a year from its branch network.
But it is thought any decision to close a large number of post offices around the country would be met with political opposition - especially in rural Ireland.
Last week, the firm announced an increase to the price of a standard stamp to €1.
This means the cost of a postage stamp will jump by 28 cent.
While last December the Government announced a second review of the company.
It is undertaking a root and branch review "to identify the structural changes necessary to restore the company to a sound financial footing".
An Post said the Kerr Report, which examined the post office network, will feed into the overall review.
That report's 23 recommendations cover a number of areas - including network renewal, financial services, government services, white labelling, and social capital and enterprise.