Invoicing software UK businesses rely on to get paid faster.
SwiftBooks Pro is online invoicing software for UK small businesses and sole traders. Create professional VAT invoices, collect payment via Stripe or PayPal, and let automated reminders do the chasing. Quotes live on Estimates.
What is invoicing software for UK businesses?
Invoicing software(also called online billing software or an invoice app) is a digital tool that lets UK businesses create, send, and track invoices and payment requests. The best invoicing software also handles VAT calculations, HMRC compliance, automated payment reminders, and online payment collection — replacing spreadsheets and paper-based admin with an automated, cloud-based workflow.
For UK businesses in 2026, choosing the right invoicing app is more important than ever. Making Tax Digital (MTD)— HMRC's digital record-keeping initiative — now applies to all VAT-registered businesses and to sole traders earning over £50,000 per year from April 2026. Your invoicing software must be digital to keep you compliant.
SwiftBooks Pro is invoicing and bookkeeping for UK sole traders, freelancers, and SMEs. VAT invoices, reminders and pay-by-link in the browser — at Solo £15/month ex VAT after the trial.
From estimate to paid invoice — in one click.
SwiftBooks Pro connects your estimate software directly to your invoicing app. Send professional quotes, get client sign-off online, and convert to a VAT invoice in one click. No re-keying, no errors, no wasted time.
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1Create a professional estimate or quote
Build branded, itemised estimates with your logo, T&Cs, and optional expiry date. Add line items, VAT rates, and discounts. Send by email with an online approval link — no client login needed.
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2Client approves online — you're notified instantly
Clients review, accept or request changes from any device. Status updates automatically: Draft → Sent → Viewed → Accepted. You receive a real-time notification the moment they accept.
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3Convert estimate to VAT invoice in one click
Hit "Convert to Invoice" — all line items, VAT rates, and customer details carry across automatically. Edit if needed, then send with a Pay Now button embedded in the invoice email.
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4Auto-reminders chase overdue invoices for you
Set a reminder schedule — before due, on due date, and every N days after. Branded reminder emails go out automatically and stop the moment the invoice is paid. Your cash flow stays healthy without any awkward calls.
Win more jobs with smarter estimate software.
A polished, branded estimate wins trust before work begins. SwiftBooks Pro gives you professional quote software with client approval portals, acceptance analytics, and one-click conversion to VAT invoices.
Branded invoice & estimate templates
Upload your logo, choose a colour scheme, and set your T&Cs. Choose from 50+ professionally designed, HMRC-compliant invoice templates. Every estimate and invoice looks like it came from a premium agency — not generic software.
Explore templates → ★ Client PortalOnline client approval portal
Clients click a link, review the estimate on any device, and accept or request changes — no login needed. You get a real-time notification and the estimate status updates in your invoice dashboard automatically.
See how it works → ★ Smart toolsExpiry dates, follow-ups & acceptance tracking
Set quote expiry dates. Schedule automatic follow-up emails for unanswered estimates. Track every open quote: Draft, Sent, Viewed, Accepted, Declined. Know exactly where each job stands without chasing manually.
Learn more → ★ One-clickConvert estimate to invoice in one click
When a client accepts your quote, convert it to a full VAT invoice in one click. All line items, pricing, VAT rates, and customer details carry across with zero re-entry. Partial deposits and milestone billing also supported.
Learn more → ★ GlobalMulti-currency invoicing for global clients
Invoice in foreign currencies on Business and above — Solo is GBP-only. Set the rate on the invoice, then match payment in Banking → Reconcile after CSV import.
Learn more → ★ AnalyticsInvoice & estimate acceptance analytics
See your win rate, average time to payment, and best-performing services. Understand which quotes convert and which don't. Use real data to sharpen your pricing strategy and improve cash flow forecasting.
Learn more →VAT invoice software that gets you paid faster.
Every invoice created in SwiftBooks Pro is a valid HMRC VAT invoice— including your VAT number, sequential invoice number, line-item VAT breakdown, and total. Invoice data stays in the ledger. Pair that with a Pay Now button (Stripe or PayPal) and payment reminders.
- ✓ HMRC-compliant VAT invoices (full & simplified)
- ✓ digital digital invoice records
- ✓ Construction invoices — CIS300 is not filed here. CIS invoicing
- ✓ Stripe and PayPal pay-by-link; GoCardless on Business+
- ✓ Automatic late-payment reminders & overdue chasing
- ✓ Recurring invoices & auto-billing for retainer clients
- ✓ Credit notes, partial payments & bulk invoicing
- ✓ Invoice viewed & opened read receipts
- ✓ PDF invoice download & email delivery
Branded UK invoice templates.
Pick a PDF template in Settings, add your logo and colours. That is the live catalogue — not 50 unnamed designs.
UK invoice payments — Stripe, PayPal; GoCardless on Business+.
Every SwiftBooks Pro invoice includes an embedded Pay Now button. Customers pay from the invoice via Stripe or PayPal. GoCardless Direct Debit is Business+. If they pay from their bank, record Payments Received and match the CSV.
No additional payment fees charged by SwiftBooks Pro. Standard transaction fees apply per provider.
Best invoicing software UK 2026 — how we compare.
We've done the research so you don't have to. Here's an honest, feature-for-feature comparison of the leading UK invoicing software options in 2026.
| Feature | SwiftBooks Pro | Xero | QuickBooks | Sage |
|---|---|---|---|---|
| Free plan for sole traders | £15 Solo ex VAT after trial | ✗ | ✗ | Basic only |
| Starting price (per month) | £15 Solo ex VAT | £16 Ignite | £15 Simple Start | £15 Start |
| HMRC-compliant VAT invoices | ✓ All plans | ✓ | ✓ | ✓ |
| Estimates / quote software | ✓ All plans | ✓ | ✓ | Paid plans |
| One-click estimate → invoice | ✓ | ✓ | ✓ | ✓ |
| Online client approval portal | ✓ All plans | ✗ | ✗ | ✗ |
| Branded PDF templates | ✓ | Limited | Limited | Limited |
| Auto payment reminders | ✓ All plans | Paid only | Paid only | Paid only |
| Multi-currency invoicing | ✓ Business+ | Premium only | Premium only | Paid plans |
| Recurring invoices | ✓ | ✓ | ✓ | ✓ |
| Invoice limit on entry plan | Unlimited | 20/month on Ignite | Unlimited | Unlimited |
Prices correct as of May 2026, excluding VAT. Feature availability subject to change. See our full comparison →
What Sales → Invoices actually does.
Create the VAT invoice, or convert an accepted estimate. Email the branded PDF. That is invoicing in this login.
Stripe and PayPal pay-by-link on every plan. GoCardless on Business+. If they pay from their bank, record Payments Received.
Invoice data stays in the ledger. Filing VAT or ITSA is Native apps are not live — use the browser.
Invoicing software UK — frequently asked questions.
Everything UK businesses and sole traders need to know about invoicing software, VAT compliance, and MTD in 2026.
What is invoicing software?
It creates, sends and tracks invoices. In SwiftBooks Pro that is Sales → Invoices, with VAT on the lines and pay-by-link.
Is SwiftBooks Pro invoicing software HMRC-compliant?
Invoices include the usual UK VAT fields. That is a VAT invoice in the ledger.
Does this invoicing app support Making Tax Digital (MTD)?
Invoice data stays in the ledger.
Can I create estimates and convert them to invoices?
Yes. Sales → Estimates, customer can accept online, then convert to invoice in one click.
Is there free invoicing software for UK sole traders?
No free-forever plan. 30-day trial, no card, then Solo at £15/month ex VAT. Native apps are not live. There are no live bank feeds — import CSV.
What payment methods can my customers use to pay my invoices?
Stripe and PayPal on every plan. GoCardless Direct Debit on Business and above. No Open Banking pay-by-bank. Record a bank payment in Payments Received.
Can I send recurring invoices?
Yes. Sales → Recurring Invoices. Multi-currency invoicing is Business and above.
The invoicing software UK small businesses actually love.
Join UK businesses using SwiftBooks Pro to send VAT invoices and get paid faster. 30-day trial, then Solo at £15/month ex VAT. Quotes live on Estimates.