If my membership cert shows TRS has been given there is nothing to claim back on the end of year return right? Looking at the revenue site https://www.revenue.ie/en/personal-...and-age/medical-insurance-premiums/index.aspx it looks like there are two ways to pay? My employer is doing it in such a way that I've gotten the TRS already and if done as a Benefit in Kind it must be claimed?
If you have your medical insurance paid by your employer as a BIK then yes, you separately need to claim the TRS as indicated on that linked page.
If it's appearing as a deduction on your payslip (i.e. you are paying the insurance yourself through payroll) then the TRS is already granted.
That's what has me confused it shows up as notional pay on all my payslips so is taxed(I assumed this was BIK) and when I view the membership cert it shows TRS has been applied so I guess there is nothing to claim?
I wouldn't take the cert at face value. Take your last payslip and multiply the BIK amount by 12, assuming you're paid monthly. Compare it against the cert. I'd wager that the BIK amount will be the gross figure.
Don't worry about the Cert. Its your payslip that matters. If your employer pays your health insurance, they have to tax you the Gross amount. It is for this reason that you have to claim the relief as mojosak has stated. You can claim this for up to 4 previous years as well so can be a nice sum!
Have you your MyAccount setup online ? Just go in there and select documents and Pick each of the last four years in turn and open the Tax Credit Certificate for each year. On page two it should list your usual 1650 allowances followed by medical relief of 200. If you're not set up online then go and find the tax credit certs that were sent to you at the start of each year. BTW - Payroll must be really stupid if they could not answer your query. Either they are paying your health for you through the employer or they're not.