Rent Supplement is based on the amount of rent charged and the income and circumstances of the applicant. There is a maximum rent limit based on the county and family size, and persons applying for Rent Supplement for properties exceeding the limit may not qualify. Applicants must pay a minimum contribution of €24 per week themselves, and this could be more depending on their income & circumstances.
There could be a delay between application and decision dates on the Rent Supplement. The tenants might ask you to wait for your rent, that's one for you to decide! Just to note that not all persons on limited income (e.g. Social Welfare) qualify for Rent Supplement - they have to meet other criteria. You should be certain that your tenant(s) are likely to qualify before making a decision to wait on the rent.
Payment of Rent Supplement may be made to your account, but it can vary from area to area - there is no obligation to pay it directly to you.
As part of the Rent Supplement application, you are obliged to supply your PPSN or Tax Reference Number to the Community Welfare Service. The details are collated and submitted to Revenue on an annual basis.