Not really my area, as this isn’t really a payroll situation. Though it could perhaps impact your tax code.
So it sounds like the former employer wants to treat you as a supplier rather than pay via payroll. There are lots of reasons - outlined above - as to why they would want to do this and they probably didn’t offer the option of being paid via payroll because they don’t want the hassle.
I believe the £1k sole trader limit mentioned by
nottsgirl is designed for people who sell via eBay or perhaps rent a field or a garage to someone, it covers property and trading. So it makes sense to keep your income from this income below £1000 for simplicity and you can theoretically avoid having to do a tax return (but keep an eye out for any HMRC correspondence just in case).
I’ve not used it myself and it’s hard to know what the application process is like without actually doing one, but I would assume you only need your NI number and maybe government gateway details?
This is the HMRC side of things
Find out about annual tax-free allowances for property or trading income and if you qualify.
www.gov.uk
There are some references to 2018-2019 tax year in that link; I think they can be ignored as while I don’t think the gov.uk guide has been updated since then, I believe the allowance remains.
I don’t know if you receive any benefits, or maintenance, so not sure what the impact this extra income may have on these. It also occurred to me that student finance applications might be affected. These aren’t my area of expertise, but I know they are things that my employees need to bear in mind.
Not sure if
Leafster could add more details on the sole trader side?