Sinn Féin has promised billions of euro of tax cuts and a committee to examine a United Ireland in its election manifesto.
The party wants to scrap the USC on the first €30,000 someone earns, to get rid of the property tax and end fees for third-level education.
It says it will raise the money needed through extra tax on banks, multinationals and those earning more than €100,000 a year.
Sinn Féin leader Mary Lou McDonald has also said meaningful steps towards a United Ireland would be a pre-requisite for them entering government.
Speaking at the party's manifesto launch today, she said: "I wouldn't even describe it as a Sinn Féin red line - this is an absolute necessity.
"I think whoever is in government, the reality is that change is afoot.
"Brexit in many respects has accelerated this conversation, and it is irresponsible - in fact I think it's reckless at this stage - not to plan."
Manifesto
In their manifesto, Sinn Féin says its proposals would see any taxpayers earning under €100,000 having a decrease in their tax of up to €700 a year.
The party has pledged what they have described as the "biggest public housing programme in this states' history" - 100,000 homes over five years, in a mix of council and affordable housing.
If in government, Sinn Féin says it would set a date for the ending of long term homelessness and rough sleeping in consultation with local authorities and homeless charities - with a date to be picked within months of entering government.
They're also proposing measures to cut rents by up to €1,500 a year, before freezing them at the lower rate for three years.
Sinn Féin on health:
- Free GP care for all by 2025 at cost of €455+
- abolish prescription charges
- medical cards for all cancer patients
- free contraceptives in all forms #GE2020— Seán Defoe (@SeanDefoe) January 28, 2020
Sinn Féin's manifesto proposes stopping the pension age increase to 67 and returning it to 65, and also abolishing the Universal Social Charge (USC) on the first €30,000 people earn.
They're pledging to reduce the cost of childcare by an average of €500 per month per child, as well as extending paid maternity leave to 52 weeks and increasing maternity benefit by €50.
In terms of Irish unity, the party says it will publish a White Paper on the subject and establish a Joint Oireachtas Committee focusing on it.
They would then aim to "secure a referendum, north and south, on Irish unity".
The party states that their measures have all been costed and that in government they would hope to have a surplus of more than €3 billion.
You can read the full manifesto on the Sinn Féin website.
