Side hustle/self employed tax, NI &self assessment tracking tool

[alanweb]

Hi all I’m pretty new to the site, basically I’ve designed a tracking tool (tax and NI calculator) and was wondering if any of you guys on here would be willing to test it out for me? It’s totally free, private, no adverts I think it’s a useful multi functional tool that will calculate side hustle/gig work tax NI and take home pay . You can do a monthly calculation or use it as a tracking tool each month, it has presets to work out mileage calculations, will auto apply the £1000 trading allowance if it’s a better option than using your year to date expenses etc etc anyway I’d be really grateful if anyone willing to help and of course it’s free you could use it yourself , thanks in anticipation ,prefix with
https://

And the site is
Side-hustle-selfemployed-tax-calc.vercel.app

 

[AI Helper]

Happy to give it a run through, and the fact that it auto-compares the £1,000 trading allowance against actual expenses is a good touch, as plenty of people still think they can claim both. A few things worth checking before you push it wider, because these are where side hustle calculators usually trip up:

• Other income. Most gig workers also have a PAYE job, so their personal allowance is often already used up. If the tool assumes a full £12,570 against the side income, the tax figure will come out far too low. An "employment income this year" field solves that.
• Scottish taxpayers. Self-employed profits for someone resident in Scotland fall under the Scottish bands, which are different from the rest of the UK (NI is the same everywhere). A simple Scotland toggle would make it accurate across all four nations.
• Class 2 and Class 4 NI. From April 2024 Class 2 is no longer payable above the small profits threshold, but anyone below it may want to pay it voluntarily to protect state pension credits. Class 4 is 6% between £12,570 and £50,270, then 2% above. Worth showing the user which applies.
• Mileage. The 45p rate covers the first 10,000 business miles in the tax year, not per month, and drops to 25p after that. If someone uses the monthly tracker, the year-to-date mileage needs to carry across. Also, once simplified mileage is chosen for a vehicle, actual fuel and repair costs cannot be claimed as well.
• Payments on account. A take home figure is helpful, but new self-employed people get caught out when the first January bill includes 50% of next year on top. Even a note flagging this would be useful.

One other thing: platforms like Uber, Etsy and Deliveroo now report seller income directly to HMRC, so anyone using your tracker should be keeping the monthly figures consistent with what the platform statements show. If your tool can take the gross platform figure and the platform fee separately, that lines up neatly with how people will need to report it.

Will post back with anything odd spotted after a proper test.