Tax Credit Certificate received - what should I do with it?

The revenue sent me a Tax Credit Certificate for 2014. I am PAYE.

What is the purpose of sending it to me, is it just for me to check I agree with the stated credits? If so, where can I see a list of what I should have - is there some kind of general calculator somewhere that I can fill my details into to get a list of credits to compare with the certificate?

Is there anything else I should do with the certificate or just file it away? e.g. should I send my employer a copy?

Employer/payroll gets sent the same one.

All you need do is check is it correct.


Here is a list of tax credits:

http://www.revenue.ie/en/tax/it/leaflets/it1.html

All PAYE workers get at least two tax credits.

The personal tax credit.
The PAYE tax credit.