This doesn't quite fit with the reality of self-employed people
boasting about keeping 80% of their income.
I don't think that his post reflects an actual "reality", rather an ill-informed view of the tax system as it applies to the self-employed. Yes, in reality, that chap appeared to be boasting, but his story is just one, and a fairly dodgy looking one at that.
You're right, of course. They are generally keeping their heads down so as not to draw attention to how they pay less tax than employees. I'm sure Kerak will get booted out of the select club for letting the cat out of the bag.
Self employed people do pay more taxes (percentage-wise and including all the extras like PRSI) than PAYE workers. We used to have to pay far more PRSI (before the ceiling for PAYE was lifted). We don't get PAYE allowance. No paid holidays, which in Ireland amounts to over one working month paid. Legitimate expenses are allowed but they are expenses that are incurred *because* we are self-employed. For e.g. working from home means larger electricity bills. The only actual advantage to being self-employed is that we don't have to pay tax month-to-month, but can pay it all in a lump sum in November (via ROS) so there's a benefit of interest as it (slowly) accrues for those 11 months. That's it.
The benefit of the PAYE allowance and the much more extensive social welfare benefits available to PAYE workers vastly outweighs any perceived advantage to being self-employed.
I'm actually ok with all of that, but I do think it's terribly unfair that there is such a range of benefits closed to the self-employed that are open to PAYE workers, not based on their own PRSI contributions (which are more or less equal now, although self-employed still pay slightly more) but based on the employer contributions, which is the missing link. It's particularly unfair to those self-employed who themselves employed others, where those others are now eligible for JA, but not the actual person who ran the business.
As far as those who say they claim the kitchen sink and all against expenses, this is not a reason to say that self employed pay less tax; it's simply that those people are tax evaders. Being self-employed (like all self-assessment taxes) makes it easier to evade tax, but that's a completely different thing to measuring a tax compliant self employed person to a PAYE worker.
Complainer, I've a lot of respect for you on here, but what you'd said is not correct and it's a pervasive myth that needs to be debunked. If there is to be a war, it should be a war between those who are tax-compliant (or are at least trying their damnedest to be so) and those who aren't.
Sprite