Best Invoice Software for UK Freelancers and Small Businesses (2026)

Invoicing in the UK has its own rules — VAT registration thresholds, Making Tax Digital (MTD), UTR numbers, and post-Brexit invoice requirements. Here are the 8 best invoice software options for UK freelancers and small businesses, ranked.

UK-Specific Invoicing Requirements

Before choosing software, understand what UK law requires on your invoices:

VAT Registration Threshold (2026)

If your turnover exceeds £90,000 in a 12-month period, you must register for VAT. Once registered, every invoice must include your VAT number, the VAT rate applied, and the VAT amount separately. UK standard rate: 20%.

Making Tax Digital (MTD) for VAT

All VAT-registered businesses must use MTD-compatible softwareto submit VAT returns digitally. This means your invoicing software must be HMRC-approved or integrate with HMRC's systems. Paper VAT returns are no longer accepted.

Post-Brexit Invoice Requirements

The UK left the EU VAT system. For invoices to EU clients: apply 0% VAT (goods exported from UK) or use the reverse charge procedure for services. For EU suppliers billing you: check if UK VAT applies. Software should handle UK-EU cross-border invoicing.

Sole Trader Invoice Requirements

All invoices must include: your name (even if you trade under a business name), address, invoice number, date, description of supply, and amount. If VAT-registered: also your VAT registration number and VAT breakdown.

8 Best Invoice Software for UK (2026)

1. Chaser ⭐

EDITOR'S PICK

€20/month · Free trial (3 invoices)

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Built for freelancers who want one thing above all else: to get paid. Chaser creates professional invoices and automatically sends 4 escalating payment reminders until paid — friendly at first, formal if needed.

✅ Pros

  • • 4-stage automated chasing (unique)
  • • VAT invoice compliant
  • • PDF + UBL XML export
  • • iDEAL + Stripe payment links
  • • Multilingual (EN/NL/DE/FR)
  • • MTD-compatible VAT records

❌ Cons

  • • Not a full accounting suite
  • • No time tracking built-in
  • • No HMRC direct integration

Best for: Freelancers who struggle with late payments and want automation without accounting complexity.

2. FreeAgent

£19/mo (incl. VAT)

✅ Pros

  • • UK-focused, HMRC-integrated
  • • MTD VAT submissions built-in
  • • Self Assessment support
  • • Popular with UK accountants

❌ Cons

  • • More expensive than basic tools
  • • Can feel complex for simple invoicing

Best for: UK freelancers and contractors wanting accounting + tax integration

3. KashFlow

£9-25/mo

✅ Pros

  • • UK-built product
  • • MTD compliant
  • • Good UK VAT handling
  • • Simple interface

❌ Cons

  • • Smaller ecosystem than Xero/QBO
  • • Limited mobile app

Best for: UK SMEs wanting a local product

4. Xero

£16-47/mo

✅ Pros

  • • MTD VAT compliant
  • • Excellent UK accounting features
  • • Large app ecosystem
  • • Good bank reconciliation

❌ Cons

  • • Expensive for simple invoicing use
  • • Steep learning curve

Best for: Growing UK businesses needing full accounting

5. QuickBooks Online

£14-38/mo

✅ Pros

  • • MTD VAT compliant (HMRC-recognized)
  • • Strong UK HMRC integration
  • • Good mobile app
  • • Large accountant network

❌ Cons

  • • Can be expensive
  • • Occasional UI complexity

Best for: Small businesses with an accountant who uses QBO

6. Sage Business Cloud

£15-39/mo

✅ Pros

  • • Trusted UK brand
  • • MTD compliant
  • • Good VAT features
  • • Accountant-friendly

❌ Cons

  • • Can feel dated vs newer tools
  • • Support can be slow

Best for: Traditional businesses and those with existing Sage relationships

7. Wave

Free (paid add-ons)

✅ Pros

  • • Free forever
  • • Good basic invoicing
  • • Decent VAT support

❌ Cons

  • • No MTD VAT submission
  • • Very limited automated reminders
  • • US-focused support

Best for: Absolute beginners or very low-volume invoicers

8. Zoho Invoice

Free–£12/mo

✅ Pros

  • • Generous free tier
  • • Good VAT features
  • • Solid reminders
  • • Multi-currency

❌ Cons

  • • Part of large Zoho suite
  • • Not UK-specific
  • • HMRC integration limited

Best for: Budget-conscious freelancers wanting more features than Wave

Making Tax Digital (MTD) Compatibility

Since April 2022, all VAT-registered businesses in the UK must use MTD-compatible software. What this means in practice:

⚠️ Important: MTD for Income Tax is coming (2026-2027)

HMRC is extending MTD to Income Tax Self Assessment for sole traders and landlords with income over £50,000 from April 2026. This will require quarterly digital record-keeping and submissions.

UK freelancers: get paid without chasing 🐕

Under the UK's Late Payment of Commercial Debts Act, you're entitled to 8% interest on overdue invoices. Let Chaser chase them automatically — so you collect without the awkward calls.

Try Chaser Free →

Frequently Asked Questions

Do I need MTD-compliant software if I'm not VAT-registered?

Currently, no — MTD for VAT only applies to VAT-registered businesses. However, MTD for Income Tax is being phased in for sole traders with >£50,000 income from April 2026, so it's worth choosing software that's prepared for this.

What invoicing software do most UK accountants recommend?

Xero and QuickBooks Online are most popular among UK accountants for their accounting features and HMRC integration. FreeAgent is popular specifically with contractors and freelancers. For pure invoicing + chasing focus, Chaser is purpose-built.

What should I include on a UK VAT invoice?

A valid UK VAT invoice must include: your business name and address, your VAT registration number, the invoice date and number, the client's name and address, description of goods/services, the VAT rate (20%, 5%, or 0%), the VAT amount, and the gross total.