Xero vs FreeAgent vs Sage: Best Accounting Software for UK Plumbers & Tradespeople

Quick Verdict: Xero vs FreeAgent vs Sage Accounting for UK Plumbers

If you're a UK plumber or tradesperson trying to get on top of your books, invoicing, and VAT returns, the right accounting software can save you hours every month. Xero, FreeAgent, and Sage Accounting are the three most popular choices for UK small businesses — but they suit different types of tradespeople depending on your setup.

Our quick take: Sage Accounting edges ahead for most plumbers and tradespeople, thanks to its trade-friendly features and strong UK bank integrations. FreeAgent is the best pick for sole traders and one-person operations. Xero is ideal if you're growing a team and need flexibility.

Xero vs FreeAgent vs Sage Accounting: Pricing Compared

All three tools are priced at accessible entry points for small businesses, though the features you get at each tier vary significantly.

Xero — from £15/month (Starter plan). Invoices and quotes are limited on the entry plan; most tradespeople will need the £30/month Standard plan for unlimited invoicing.
FreeAgent — from £19/month (after an initial discount period). Free for NatWest, Royal Bank of Scotland, and Mettle business account holders — a significant saving for eligible tradespeople.
Sage Accounting — from £15/month (Start plan), with the full Accounting plan at £30/month. The entry plan includes invoicing and MTD VAT submissions, which covers the basics for most plumbers.

All three prices exclude VAT. Worth noting that FreeAgent's free access via NatWest or RBS business accounts makes it exceptionally good value if you already bank with those providers.

Xero vs FreeAgent vs Sage Accounting: Features Compared

Making Tax Digital (MTD) compliance is non-negotiable for UK tradespeople. All three platforms are fully MTD-compliant for VAT submissions to HMRC, so you won't fall foul of the rules on that front.

Invoicing and quoting is where differences emerge. Sage Accounting allows you to create professional quotes and convert them to invoices seamlessly — a workflow that plumbers and trades businesses use constantly. Xero handles this well too, with a clean interface that's easy to learn. FreeAgent covers the basics but is less polished for quote-heavy workflows.

UK bank integrations are strong across all three, but FreeAgent and Sage have particularly deep connections with major UK banks including Barclays, HSBC, Lloyds, and NatWest. Xero supports open banking feeds and works with most UK business accounts. Automatic bank reconciliation — matching your payments to invoices — is a time-saver all three platforms offer.

Mobile apps: All three have mobile apps. Xero's is the most polished for on-site use.
CIS (Construction Industry Scheme): Sage Accounting handles CIS deductions directly, which is essential for subcontractors in the trades. Xero supports CIS with some setup. FreeAgent has limited CIS functionality.
Expense tracking: All three allow receipt capture via mobile. Xero and Sage have the most intuitive expense workflows.
GDPR compliance: All three are GDPR-compliant and store data on UK/EU-based servers or with appropriate data agreements in place.

Payment integrations are worth considering if you take card payments on-site. Xero and Sage both integrate with SumUp and Zettle, which are popular with tradespeople for accepting payments on the job. FreeAgent offers more limited payment gateway options.

Which Should You Choose? Xero, FreeAgent, or Sage Accounting?

Choose Sage Accounting if you're a plumber or tradesperson who regularly works under the Construction Industry Scheme, needs straightforward quoting-to-invoice workflows, and wants solid UK bank feeds without a steep learning curve. It's built with trades businesses in mind and the entry price is competitive.

Choose FreeAgent if you're a sole trader or one-person operation — particularly if you bank with NatWest, RBS, or use a Mettle account, which gives you free access. It's excellent for self-assessment tax returns and MTD compliance without overcomplicating things.

Choose Xero if you're running a small team of plumbers or trades staff, need a highly intuitive interface, or want the widest range of third-party app integrations as your business grows. It's the most scalable of the three.

Other Options to Consider

If you need more than just accounting, it's worth knowing about specialist field service tools. Jobber (from £49/month) offers job scheduling, quoting, and invoicing built specifically for trades businesses, and integrates with Xero. Commusoft (from £119/month) is a comprehensive platform tailored for UK plumbing and heating engineers, with robust scheduling and mobile access. Square POS offers a free plan with integrated payments, useful if you also sell parts or equipment directly to customers.

These tools work best alongside an accounting package rather than replacing one — pairing Jobber with Xero, for example, is a popular combination among growing UK trades businesses.