For UK side businesses
Invoicing for side businesses
Got a job and a business on the side? Keep the business part tidy in a few minutes a week, and find out whether Making Tax Digital applies to you.
What you say
“Invoice Sam for the Saturday photography shoot: four hours at £45 an hour, plus £30 for prints.”
What Honest Invoices does in 30 seconds
- · Extracts time, materials and costs from the words you used
- · Builds a compliant UK invoice with sequential numbering, VAT (if registered), and your payment terms
- · Stores the digital record for MTD ITSA quarterly submission
- · Emails the PDF to your client when you tap send
£15/month, locked · 14-day free trial · no card required
The reality
The pain you actually have.
Generic accounting software is built for accountants. This is built for a side business who finishes a job at 5pm covered in dust and just wants to get paid.
01
Your business gets evenings and weekends. Admin shouldn't take the little time it has.
02
You're not sure whether Making Tax Digital applies to you, and the rules seem written for full-time businesses.
03
Invoices in emails, notes and your head. It all works until tax return time.
What it does
Three things. Built for mobile service work.
No bloat, no “multi-entity reporting”.
Minutes, not evenings
Describe the work when you finish it, and the invoice is ready to send.
Know where you stand
Our free MTD wave calculator counts your side-business turnover and any rental income, and leaves your salary out.
Records sorted as you go
Every invoice is saved as a dated digital record, so tax time isn’t a dig through your inbox.
From the founder
Built end-to-end against HMRC’s APIs.
Honest Invoices is built and run by Vix Hawley. The MTD ITSA integration was built by hand — OAuth, fraud-prevention headers, the full Self-Employment Business and BSAS APIs. It took months. The full HMRC sandbox journey passes 16 out of 16 steps with proof on file.
Most accounting platforms are built for accountants. This one is built for side businesses who don’t want to spend their evenings doing admin. £15/month. Locked. No price hikes, ever.
FAQ
FAQ for side businesses.
Does my salary count towards the MTD thresholds?
No. Only self-employment and property income count. Your PAYE wages don’t.
I also rent out a flat. Does that count?
Yes. Gross rental income is added to your self-employment turnover for the thresholds.
My side business makes less than £20,000. Do I need MTD?
Not under the current rules. You may still need to file a Self Assessment tax return if your trading income is over £1,000 a year.
Can I try it first?
Yes. You get 14 days free with no card required, and can cancel any time.
Talk to a person
Not a chatbot.
If you’ve got a question about whether Honest Invoices fits your trade — call, text, or email. You’ll reach the founder, not a queue.
Ready to stop typing invoices?
14 days free. No card required. £15/month after that — locked, forever.