How much will take home pay increase if we marry

I am currently co habiting with my partner. He is not entitle to social welfare benefit cos he is residing with me but I am not entitle to claim his tax credits cos we are not married. He is stay at home Dad to our 2 children since he was made redundant 2 years ago.

I currently earn €40,154 & my health insurance is also paid by work €1200 & I am paying €1664.40 yearly into my pension scheme. I thought I would be able to claim his tax under the civil partnership bill but I was wrong.

How much would our take home pay increase by if we were married?

Thanks

You can check this using my Excel calculator. Download it at http://taxcalc.eu/monthlyss.
To enter your benefit in kind and pension, use the optional information section.
You might want to check its accuracy by initially entering your details as a single person and comparing the result against your payslip.