1: I know there is a €1270 tax free exemption. Great. So if I sell shares to get my profit today can I buy the shares back tomorrow or do I have to wait a certain amount of time to buy them back.
Yes, you can use the exemption, and immediately buy back the same share. But you pay stamp duty & trading costs so don't forget to factor this in.
Remember, if you're married you can use the CGT exemption of both when you sell shares, if you jointly own them.
selling shares that are at a loss
No. This is where there's a 4 week rule. If you buy back the same share within 4 weeks, then it's treated as the same share, so you cannot crystallise the loss (the loss can only be offset against a gain on the same share).
3: If I sell shares at a loss how many years can I carry the loss for to hopefully offset tax in the future?
Currently indefinitely.
But make sure to report the loss.
It future years, you must use the loss carried forward before any exemption (so you use up loss before your 1270 exemption).
4: I've gotten some dividends. They're small. Are these in the €1270 exemption too or do I just get taxed on them. I don't care either way. I just want to do it right.
No. The exemption applies to capital gains. Dividends are subject to income tax, so there is no exemption.
5: On my dividends, they've been from US companies. Typically a small amount has been withheld for tax. When I'm reporting to Revenue do I report 100% of the dividend or the amount I actually received.
You report the gross amount, and that dividend wutholding tax has been applied. This is treated as a credit against your tax due. I haven't done a return for a while so I don't remember the specific lines to fill in.
6: Finally I've been Googling where to report any profit. It says Form 12. I've had a look at MyAccount on Revenue.ie. I'm a PAYE worker. I can't see anything that says share income or dividend. Is there a simple way of reporting these numbers to Revenue or is it a 20 page form to report €50?
The new online form is a simplified form 12.
After you complete PAYE income, there is a section for non PAYE income where you enter details. I haven't used it since they changed the online form, so someone else will guide you better.