1. Tax rate percentage transferring real estate: The rate of stamp duty payable on the transfer of residential property in Ireland is 1% of the purchase price for properties up to €1 million, and 2% for properties over €1 million.

2. Percentage tax rate for renting out house: Rental income in Ireland is subject to income tax at the individual's marginal rate, which can range from 20% to 40%, depending on the amount of income earned.

3. Top 5 most popular regions to live in Ireland:

- Dublin: The capital city and economic hub of Ireland, known for its vibrant culture, nightlife, and job opportunities.

- Galway: A picturesque city on the west coast known for its strong sense of community, lively arts scene, and beautiful natural surroundings.

- Cork: Ireland's second-largest city, known for its historic architecture, friendly locals, and strong culinary scene.

- Limerick: A city in the mid-west with a strong industrial base, known for its cultural heritage, universities, and vibrant music scene.

- Waterford: Ireland's oldest city, known for its rich history, stunning coastline, and strong sense of community.