Calculating increase in income after tax

I have been on a career break minding the kids (Lecturer) and am due to return in September. My husband is earning €56k net (Third level job too - that's after pension levies etc). I want to go back part-time and I'd earn either roughly €10,000 (gross) or €20,000(gross) depending on the work I take on. I know I should be able to figure this out, but it's been a while....

How can I calculate what I will take home each month? As I'd be returning in September - do I get the full PAYE Tax credit? Is the Income Levy and the PRSI/Health levy worked out as a percentage of our joint income or is it separately assessed. Sorry to be so thick, I just can't figure it out.

Basically I want to know if I was to earn €10,000 or €20,000 gross - how much would I be likely to get a month after tax. If someone could give me a straightforward way to figure it out, I'd be really grateful.

You need to work out what your joint net income will be, as currently your husband should be claiming the home carers tax credit, which will be gone if you are working, as I assume using all your tax credits that it is available to transfer to him.

Use the tax calculator www.taxcalc.eu and put in all the information and you should see what net income you will have

You would get the full year's Paye tax credit if it is covered by your Paye income.
Income levy and Prsi are related to your earnings, not joint income.

My spreadsheet (http://taxcalc.eu/monthlyss) might also help with this query- it allows you to specify the start month for your employment ( September) and also handles 'unique' matters such as public sector superannuation calculations, the PS pension levy, the various PRSI rates applying to staff employed pre/post 6 April 1995 etc.
You can enter data for both yourself and your husband and switch between displaying net calculations for you/ your husband.

Ideally, you'd need your tax credit and cut-off values to get the most accurate result but if you don't have those values to hand the calculator will make an assumption about the allocation of values (highest earner gets the greatest possible amounts).

If you need a hand using it feel free to PM me here or by using the email on the 'Net pay calculations' sheet in the calculator.

Thanks to everyone who replied - really appreciate the help. That's a great calculator!