Facebook has previously committed to introduce such tools but has said they are not ready in time for the referendum.
Facebook said it would be working directly with political parties and campaign groups on both sides of the vote, who are being asked to notify the company "if they have concerns about ad campaigns".
'We feel the spirit of this approach is also consistent with the Irish electoral law that prohibits campaigns from accepting foreign donations'.
Irish citizens head to the polls on May 25 to decide whether to alter the eighth amendment of the constitution, which recognises the equal right to life of the unborn and the mother. And while Ireland forbids foreign spending in campaigns, its election law is silent on digital activity.
The referendum on whether to end Ireland's constitutional ban on abortion, a vote that is expected to be tight, has drawn concerns that foreign groups will try to influence the debate through social media.
It said that this would relate to paid of advertisements on its platform. The company also said it would use artificial-intelligence technology to spot potentially problematic material.
Ads uploaded to Facebook by organisations based in the country could still be funded by foreign sources, however.
Facebook stated on Tuesday that bands taking care of each side of the Irish referendum could have the capacity to flag ads suspected of arriving from overseas associations. The business has shifted its news-feed algorithm to deemphasize political news, and has appreciated thousands of moderators internationally to spot rumors and extremist articles.
According to AP, Facebook is testing a new process that will confirm whether or not an advertiser taking out political ads is located within the country holding that particular vote - and with the 2018 USA midterms coming up, it's significant timing.
Facebook said that its ban on ads not from the Republic would be effective from 8 May.
The May 25, referendum would reveal whether the Irish people want to remove the eighth amendment.
Users are now able to see all of the content originating from the Facebook account behind those posts, rather than just the ads or stories targeted at them.
But it allows users to see only current ads, so it is impossible to gauge the totality of an organization's online activity.