Built for UK trades and sole traders
Invoice the job before you leave the drive.
Fill in the work, check the live preview and download a PDF. Slater handles VAT and the construction reverse charge, and keeps working with no signal once the page has loaded.
Free to use without an account. Your draft stays on this device until you choose to sign up.
Invoice
No. 0042
R. Patel Electrical
VAT 123 4567 89
Bill to
Hollis Build Ltd
First fix wiring, 3 days
£1,350.00
Second fix, 2 days
£900.00
Consumer unit and cable
£420.00
Subtotal
£2,670.00
VAT 20% (reverse charge)
£534.00
Amount due
£2,670.00
Reverse charge: Customer to pay the VAT to HMRC. VAT Act 1994 Section 55A applies.
PDF ready
Saved on this device
No account needed to make an invoice
Works offline after the first visit
UK VAT rates and reverse charge
PDF drawn on your device
Export all your data any time
Most invoice tools are built for office work.
A Word template doesn't know the reverse charge rules. A bank app may cap how many invoices you can send each month. Accounting software asks you to set up a ledger before you can bill a customer. Slater does one job: a correct invoice, made where you are, in a few minutes.
What you get
Everything a trade invoice needs, and nothing it doesn't.
Get it done on site
Start without an account.
Open the editor and fill it in. Sign up later if you want your invoices saved.
Works with no signal.
After one visit, the editor and PDF download work offline. Your draft is saved on the device as you type.
Live preview.
See the finished invoice update as you type, totals and VAT included.
Get the tax right
UK VAT rates built in.
Standard 20%, reduced 5%, zero-rated or exempt, with the VAT number and totals HMRC expects.
Construction reverse charge.
Turn it on for work for a VAT- and CIS-registered contractor. The invoice shows the VAT, leaves it out of the amount due, and adds HMRC's reverse charge wording.
CIS deductions.
Mark each line as labour, materials or plant hire. The deduction at 0, 20 or 30% comes off the labour only, and the invoice shows the amount due.
Keep records you can rely on
With a free account
Numbered invoices that can't be edited after sending.
If something's wrong, issue a replacement; the original and the reason stay on record.
Track what's been paid.
Record part payments and see what each client still owes.
Email invoices from the app.
The PDF goes as an attachment and the send is logged.
Take your data with you.
Download a JSON of your account, an invoices spreadsheet (CSV) and the PDF of every issued invoice, ready for your accountant.
Three steps
From finished job to finished invoice in three steps.
Nothing to set up first. Open the editor and start typing.
Add the job.
Your details, the customer, each item of work and materials, and the VAT that applies.
Check the preview.
The invoice builds as you type, with the totals worked out for you.
Download the PDF.
Save it on your phone and send it however you like. With an account, email it from Slater and keep a record.
Free account, when you want it
Keep working locally. Sign up when you want the records.
A free account saves your clients and invoices, numbers each invoice for you, emails it, and tracks what's been paid. Anything you started as a guest can come with you. You never need an account to make an invoice.
Create a free accountClient list with what each one owes
Automatic invoice numbering
Email invoices with the PDF attached
Part payments and balances
Replacement invoices with a full history
Bring your guest draft across when you sign up
Free to use. Pro is coming for people who want paying sooner.
Free, today
£0
Everything on this page: the guest editor, VAT and reverse charge, and a free account with clients, payments, history and export.
When Pro launches, free accounts keep every feature here, with up to 10 invoices emailed from Slater a month. Downloading PDFs stays unlimited.
Make a free invoiceProComing soon
£6 a month or £60 a year, no VAT to add
- Card and bank payment links on every invoice, matched to the invoice when paid
- Automatic reminders that add statutory late-payment interest
- Your logo on invoices and emails, with no Slater footer
- Unlimited invoices emailed
Common questions
Is it really free?
Yes. The guest editor is free with no limit and no account. A free account is free too. When Pro launches, free accounts will be able to email up to 10 invoices a month from Slater; making and downloading invoices stays unlimited.
Is Slater Making Tax Digital (MTD) software?
No. Slater makes and tracks invoices; it doesn't file anything with HMRC. If you're in MTD for Income Tax, keep using the tool your bank or accountant gives you, and export your invoices and payments from Slater to bring into it.
Does it handle CIS and the construction reverse charge?
Both. Switch on the reverse charge and the invoice shows the VAT, leaves it out of the amount due and carries HMRC's wording. Switch on CIS and the deduction is worked out on the labour, leaving out materials and plant hire, and taken off the amount due.
Does it work without signal?
The guest editor does. Open it once with a connection and it keeps working offline, including the PDF download. Saving to an account, emailing invoices and recording payments need a connection.
Where does my data go?
As a guest, nowhere: your draft stays in your browser and the PDF is made on your device. With an account, your details, clients and invoices are stored on our servers, rented from Hetzner, and invoice emails go out through Resend. We don't sell data, run adverts or use tracking cookies. Our privacy page has the details.
Can I take my data with me or delete it?
Yes. In Settings you can download everything (invoices, clients, payments and every PDF) and delete your account. Keep the download: sole traders must keep records for at least 5 years after the 31 January Self Assessment deadline; limited companies and VAT-registered businesses keep them for 6 years. GOV.UK has the rules for sole traders, limited companies and VAT records.
What if I make a mistake on an invoice I've sent?
Issue a replacement. The original stays on record, marked as replaced, with your reason, so your numbering and history stay intact.
Do I need to be VAT registered?
No. Turn off "VAT registered" under Your business and the invoice leaves VAT off. If you're registered, add your VAT number and pick the rate for the job.
Your next invoice can start now.
Open the editor and fill it in. It's free, and your draft stays on this device until you decide otherwise.
Make a free invoice