I get the cyniccism bit.
Let me say this. The tax rules
have not changed. That is to say, there is no new tax liability where there wasn't one before.
What has changed is the data being passed to HMRC by selling platforms about transactions on their sites, under certain circumstances.
Another thing to bear in mind is that
rarely are tax rules as simple as yes or no.
So, if you are selling
personal items, i.e. having a loft clear-out, the official line from HMRC (and yes, I checked) is you
probably aren't liable for paying any tax on it. But that means there are circumstances where you are.
To know
for sure if tax is due, you have three basic choices (
IMHO) :-
1) Spend a lot of time yourself understanding tax rules, or
2) Pay a professional to tell you, or
3) Report the "income" to HMRC, making it clear what you're doing, and see what they say.
Generally, there are things you can do to make a few quid that, if they exceed a given threshold, are taxable. One used to be renting out a room in your home. Still is, as far as I know. Up to a point, you can do so without tax, but above that, tax is due, and there are conditions to be met, like the "in your home" bit. A similar rule applies.
IIRC, to "side-hustles", i.e. a very low value making of a bit of cash. Up to a point, and I think it was £1000 but it's ages since I've looked.
The problem, if you like, is that very large numbers of people are only really used to tax being deducted at source (PAYE), by their employer, and don't realise that their cake-making business, or making some money creating simple websites, or buying furniture, doing it up and selling for a profit MIGHT resuLt in taxable income.
Selling your own bits and pieces also MIGHT, though it'll be Capital Gains Tax and that usually only applies if you sell it for more than you original paid, and if the total capital gain on all items sold in a year exceed the CGT tax-free allowance (which memory tells me used to be something like £6000/year.
So a simplistic example might be buying a watch for £10 in a car boot sale 30 years ago, then getting offered £30,000 buy an antique dealer. The capital gain would be £29,990, and if the tax free allowance is £6000, and assuming you sold nothing else for a gain, then you gain £29,990-6000, or £23,990, which would be chargeable at whatever the CGT rate is.
To be clear, I'm making these figures up as an illustration, not claiming their correct and current, and the example is simplistic.
So if you sold a hifi system of high-value components, and you sold your camera gear, and some jewelry you inherited, and .... you get the picture .... what you'll possibly end up doing is making a list of the cost/value on acquisition, and the sale value, and the gain
per item, because any one item might not result in tax, but a long list of them might. The solution there might, for example, be sell half this year and half next year. But it'll perhaps be more complicated if you "inherited" that jewelry or watch. At what value does it hold when YOU got it? Market value at the date you inherited it? Cost when you ancestor bought it 300 years ago?
Even where the general principle is there's no tax selling the stuff in your attic, situations can arise when there is, which is why HMRC says "probably" no tax.
To reiterate, as I understand it, tax rules and when tax is or isn't due
hasn't changed. Anyone whose "side-hustle" is resulting in taxable income this year is in the same boat they were last year, if making the same income ... it MIGHT result in a tax liability, or it might not. There is no clear, simple definitive yes/no because it all depends on the detail.
Generally, as I said, HMRC aren't looking to be vindictive, and generally, will look much more kindly on people genuinely unaware, or who go to HMRC before HMRC come banging on your door. They, as I understand it, don't have much choice about some elements of rectifying even unknowing unpaid tax, because late payment interest is,
IIRC, laid down in statute. But they do have discretion in applying many fines and penalties and they can be heavy if they conclude people have been deliberately dodging a genuine liability.
It's usually much less expensive to go to them, be honest and say I've been doing this, here's the details, I just found out I MIGHT owe some tax, can you help me please. They usually will.
The problem with the vagueness of all the "mights" is that every situation can be different, and without specific detail, the situation can vary. Sell two items on the same day and the total might result in tax being due, but sell one on a given day and the other the following day and it might not (PROVIDED the new tax year started between those two days).
All that's happened, as I understand it, is more data going from selling platform to HMRC automatically, which makes it more likely that those that should have been paying tax, maybe for years, but haven't been, are likely to get spat out onto an inspectors desk by their computer system. Then, that person might get a visit
because of these changes in data reporting, but the fact remains that if they were trading enough in a side-hustle that they should have reported it before the changes, then
they should have reported it before the changes. The onus is on us to know, or find out, if we're conducting any form of business, on any scale, whether it's large enough to generate a liability. Even if we aren't in business, but just selling off our old stuff it MIGHT carry a tax liability, but for most of us, generally won't, not least because most such selling isn't at a gain. If you think it might be, FIND OUT what the rules are and maybe stagger the selling over two years, or more.
Timing, or correct documentation,
can make a big difference. Dealing with my parents estate when we lost them resuted in a tax bill of over £80,000 being avoided because we saw problem coming and changed the ownership from joint, to 50% of the property owned by each, directly. It was 100% legal, and in fact, the then-Chancellor (Gordon Brown) changed the rules a couple of years later so the default became what we'd had to do manually, and that £80k wouldn't have been at risk in the first place.
Anyone trading, side-hustle or not, really ought to find out what the situation is before HMRC come a-calling, because it might save them a fair whack being up-front about it.
But there are no simple cut and dried rules, because circumstances can vary so much, like selling half your hifi in one tax year and the other tomorrow, in the next one (if the date is, what, April 5th to 6th).
I get the cynicism, but I still think HMRC are simply trying to collect the correct tax where it has long been due, but for whatever reason, often not been forthcoming. They certainly don't have the resources to come knocking on your door with a hand out because you made a few hundred quid over what you paid for your old hifi, unless you're VERY unlucky in getting picked in a small random sample. They don't have anywhere remotely near the staff to do that, and have far better things to spend their time on, if they did. But if they can convince people to come to them, as indeed current law has required for a very long time, they'll certainly process the resulting annual tax return and cash the cheque (or bank transfer).