Making Tax
Digital.
Sorted.
Mint Books is invoicing and Making Tax Digital software for UK sole traders, limited companies and CIS contractors. Send invoices, keep your books up to date with live bank feeds and file your VAT return straight to HMRC. See your Self Assessment tax as you go.
Free for 14 days. Then £1/month for six months, then £9.99. Cancel anytime.
Already have a Mint Books account? Log in →
How much are you
leaving on the table?
Every receipt in the footwell and every mile you didn't log is money you're allowed to claim and don't. Put your own numbers in and see the damage.
Your month, roughly
Nobody's judging. Be honest.
Mint Books catches all four. Photograph the receipt and it's filed. Log the trip once and the mileage is applied. The chasing happens without you.
Start your 14-day free trialAn illustration based on the figures you enter, not a forecast. What you can actually claim depends on your circumstances and your VAT position — check with your accountant.
Photograph a receipt.
We do the rest.
Point your phone at any receipt. Mint Books reads the supplier, the date, the amount and the VAT, then files it under the right HMRC category, ready for your VAT return and your tax.
Tap the receipt to scan it again.
Everything that happens after the job
Other apps give you a form. Mint Books does the work and asks you to check it.
Quotes your client signs on their phone
Send it by email or WhatsApp. They accept with a digital signature — name, IP address and device recorded — and it becomes an invoice in one click.
Invoices that chase themselves
You see when it was delivered, when it was opened and how many times. Card payments through Stripe. Automatic reminders go after the late ones so you don't have to.
Your VAT return, already filled in
The 9-box return calculated from your invoices and expenses and submitted straight to HMRC through Making Tax Digital. Standard, Cash and Flat Rate schemes.
Self Assessment that isn't a weekend
Expense categories map straight onto the SA103F boxes, with Class 2 and Class 4 NIC worked out and simplified expenses used where they beat the actuals.
Mileage, time and profit per job
45p a mile to 10,000 then 25p, applied automatically. Billable hours turn into invoice lines in one click, and every cost lands against the job it belongs to.
Partnerships, LLPs and limited companies
Profit shares allocated across partners automatically, with SA800 in mind. Corporation tax and dividend tracking for limited companies, so the small business you actually run is the one the software is built for.
A dashboard you check, and a view for your accountant
Live profit and loss whenever you want it, in multi-currency if you trade abroad. Give your accountant read-only access and they stop emailing you for things.
CIS, done
to the penny
Labour and materials split automatically. 20% or 30% applied to the labour element only. VAT reverse charge handled. UTR and verification numbers tracked against every subcontractor, and the monthly return built as you invoice.
Included on Pro. Nothing extra to buy.
Plugged into the things
you already use
Three connect straight in. The other two — plus a few thousand more apps — connect through webhooks.
Connect once and your VAT return goes to HMRC through Making Tax Digital — 9-box, Standard, Cash and Flat Rate. Pre-submission checks catch errors first.
Take card payments straight from an invoice. The money lands in your account and the invoice marks itself paid — no reconciling it by hand.
Electrical certificates and client records shared between both apps, so the job you certified is the job you invoice. Same people, same login.
Fire an event the moment an invoice is paid, a client is added or an expense is logged — into a spreadsheet, a Slack channel, anywhere a Zap can reach.
Same events, built into whatever scenario you like. Paste the webhook URL into Make and it starts receiving straight away.
A proper v1 API with your own keys, plus signed webhooks and delivery logs, so you can build whatever the list above doesn't cover.
Events available today: invoice created, sent, paid and overdue; payment received; credit note created; expense created; client created.
Ask ChatGPT or Claude
about your books
Connect Mint Books to the AI assistant you already use, then ask about your business in plain English. It reads your real figures, and it cannot change a thing.
- Who owes me money, and how late are they?
- What was my profit last quarter?
- Roughly what will my VAT bill be this quarter?
- Which certificates have I not invoiced yet?
Uses your own ChatGPT or Claude account. Read only.
ChatGPT is a trademark of OpenAI. Claude is a trademark of Anthropic.
Connected to ChatGPT
- Harper & Co: £1,950, 42 days overdue
- Oakfield Lettings: £1,530, 12 days overdue
- J. Patel: £800, not due yet
Two plans.
No contract.
The price you see is the price you pay. Yearly gets you two months free.
Essential
£9.99£1/mo- Unlimited invoices, quotes and clients
- Unlimited expenses, AI receipt scanning
- Card payments via Stripe
- Dashboard and profit & loss
- Accountant access, read-only
- 1 user · extra users £5/month
Pro
£19.99£2/mo- Everything in Essential
- VAT returns and Making Tax Digital
- Self Assessment and tax tools
- CIS for construction
- Time tracking, projects, automations
- Multi-currency, API and webhooks
- 2 users included
For comparison, as published by each and excluding VAT: Xero Ignite £16, QuickBooks Simple Start £14, FreeAgent Sole Trader £19 a month. Ours is the total you pay.