If you run a construction business in the UK, your accounting software needs to do more than just track income and expenses. It needs to handle CIS deductions, multiple VAT schemes, subcontractor payments, retentions and payroll for site workers. A generic bookkeeping tool will leave you doing half the work manually. The right construction accounting software saves hours each month and keeps you compliant with HMRC.

We work with builders, electricians, plumbers, scaffolders and general contractors across Manchester, Birmingham, Bristol and London. The same question comes up repeatedly: which platform actually works for construction? The answer depends on your business structure, your turnover and whether you work through a limited company or as a sole trader.

This guide covers the main options for UK construction businesses in 2025/26. We look at Xero, QuickBooks, Sage 50, FreeAgent and specialist construction platforms. Each has strengths and weaknesses for the specific demands of the trade sector.

What Construction Businesses Need from Accounting Software

Before comparing specific products, it helps to list the features a construction business actually uses. Most standard accounting packages handle invoicing and bank feeds. Construction adds extra layers.

  • CIS (Construction Industry Scheme) handling. The software must track CIS deductions on subcontractor payments, generate CIS300 returns monthly and produce subcontractor statements. If it doesn't do this automatically, you are doing manual calculations on spreadsheets. That is a compliance risk.
  • VAT schemes specific to construction. Many builders use the Flat Rate Scheme. Some use the Cash Accounting Scheme. A growing number need to handle domestic reverse charge for VAT. Your software should support whichever scheme you use.
  • Retentions tracking. If you hold retention money on contracts, the software needs to show that as a debtor or creditor, not as revenue received. Generic software often misses this.
  • Payroll integration. Construction payroll is not standard payroll. It involves CIS deductions for subcontractors, holiday pay for CIS workers and RTI (Real Time Information) submissions. The payroll module needs to talk to the main accounts.
  • Project costing. You need to see whether each job is profitable. That means tracking labour, materials, plant hire and subcontractor costs against a specific contract. Generic profit and loss accounts by month are not granular enough.
  • MTD for ITSA compatibility. From April 2026, sole traders and landlords with qualifying income over £50,000 must use Making Tax Digital compatible software. If you are a sole trader builder turning over £80,000, your software must be MTD ready.

Not every package does all of these well. Some do CIS well but project costing poorly. Some do payroll well but VAT handling badly. Here is how the main options stack up.

Xero with CIS Add-Ons

Xero is the most common accounting platform we see among UK construction limited companies. It handles bank feeds, invoicing and expense tracking well. The core package does not include CIS functionality. You need to add a third party app.

The two main CIS add-ons for Xero are Rounded and KeyPay. Rounded handles CIS deductions, subcontractor statements and CIS300 returns. It syncs with Xero so the accounts show the correct liability. KeyPay is a payroll platform that handles both employee payroll and CIS subcontractor payments in one place.

For a typical construction limited company turning over £250,000 with three employees and five regular subcontractors, Xero plus Rounded costs roughly £50 to £70 per month. That is competitive. The main limitation is that Xero's project costing is basic. You can tag transactions to a project, but the reporting is not as detailed as Sage 50's job costing module.

Xero works best for: limited company builders who need strong bank feeds, good mobile access and decent CIS handling via an add-on. It is less suited to businesses that need deep job costing or work mainly on large contracts with complex retentions.

QuickBooks for Sole Traders and Small Builders

QuickBooks is popular with sole trader builders and small partnerships. The self-employed version is straightforward and cheap, starting around £12 per month. It handles invoicing, expense tracking and basic VAT. The CIS functionality is built into the higher tier plans (QuickBooks Plus and above).

For a sole trader electrician in Leeds turning over £60,000 with one or two subcontractors, QuickBooks Plus at roughly £30 per month does the job. It handles CIS deductions, generates subcontractor statements and files the CIS300 return. The VAT handling covers Flat Rate and Cash Accounting schemes.

The limitation is payroll. QuickBooks payroll is a separate add-on costing extra. If you employ site workers, the combined cost of QuickBooks Plus plus payroll can reach £60 per month. At that point, Xero plus a payroll add-on may offer better value.

QuickBooks works best for: sole traders and small partnerships with limited subcontractor numbers. It is less suited to larger limited companies with multiple employees and complex project costing needs.

Sage 50 for Established Construction Firms

Sage 50 is the traditional choice for construction businesses that have been running for 10 years or more. It has a dedicated construction module (Sage 50 Construction) that handles CIS, retentions, project costing and contract management natively. No add-ons required.

The job costing in Sage 50 is genuinely detailed. You can track labour hours, material costs, plant hire and subcontractor costs against a specific contract and see margin in real time. For a construction firm in Birmingham turning over £800,000 with 10 employees and multiple concurrent contracts, Sage 50 Construction is hard to beat.

The downsides are cost and usability. Sage 50 Construction starts around £80 per month and rises with the number of users. The interface is dated. Training staff to use it takes time. And cloud access is limited compared to Xero or QuickBooks.

Sage 50 works best for: established construction firms with multiple contracts, complex retentions and a need for detailed project costing. It is overkill for sole traders or small partnerships.

FreeAgent for Contractor-Led Construction Ltds

FreeAgent is worth a mention for construction limited companies that are essentially contractor-led: one director, maybe one or two employees, and a handful of subcontractors. FreeAgent handles CIS natively. No add-ons. It generates CIS300 returns and subcontractor statements automatically.

FreeAgent's VAT handling is good. It supports Flat Rate, Cash Accounting and standard VAT. The project tracking is basic but sufficient for a business running 5 to 10 contracts at a time. The payroll module handles both employee payroll and CIS payments.

Pricing is around £24 per month, or free if you bank with NatWest or Royal Bank of Scotland. For a contractor in the Northern Quarter in Manchester running a £150,000 turnover limited company, FreeAgent is often the most cost effective option.

FreeAgent works best for: contractor-led limited companies with straightforward CIS needs. It is less suited to larger firms with complex retentions or multiple concurrent projects requiring detailed cost tracking.

Specialist Construction Software: COINS, JOBCOST and Buildertrend

For larger construction businesses turning over £1 million plus, general accounting software may not be enough. Specialist platforms like COINS, JOBCOST and Buildertrend offer project management, contract costing, CIS handling and accounting in one system. They are expensive, typically £200 to £500 per month, but they replace multiple separate tools.

These platforms are relevant if you manage 20 or more contracts simultaneously, have complex retentions structures, or need to integrate with construction-specific procurement systems. For most small and medium construction businesses, the cost is hard to justify against Xero or Sage 50.

Buildertrend is the most accessible of the three. It starts around £150 per month and includes project management, scheduling, financial tracking and client communication. It integrates with Xero and QuickBooks for the accounting side. That hybrid approach works well for growing construction firms that want project management without losing their existing accounting setup.

CIS Handling: The Non-Negotiable Feature

Whichever software you choose, CIS handling must be automatic. Manual CIS calculations on spreadsheets are a common source of errors and HMRC penalties. Your software should:

  • Calculate CIS deductions at the correct rate (20% standard, 30% for subcontractors not registered for CIS)
  • Generate CIS300 returns monthly (the deadline is the 14th of each month)
  • Produce subcontractor statements showing gross payments and deductions
  • Track gross payment status (some subcontractors are verified gross and should not have deductions applied)

If your software does not do all four, you are creating extra work and compliance risk. Xero with Rounded, QuickBooks Plus, Sage 50 Construction and FreeAgent all cover these points. The cheaper tiers of QuickBooks (Simple Start and Essentials) do not include CIS. Check before you buy.

VAT Schemes for Construction: What Your Software Must Support

Construction businesses use VAT schemes differently from other sectors. The main schemes are:

  • Flat Rate Scheme. Common among builders and trades. The software must apply the correct flat rate percentage for your trade (e.g. 9.5% for general building, 5% for catering, 14.5% for electrical). Limited cost traders are restricted to 16.5%.
  • Cash Accounting Scheme. You account for VAT when you receive payment, not when you invoice. Useful if you have slow paying clients.
  • Domestic Reverse Charge. Mandatory for most construction services between VAT-registered businesses since March 2021. The customer accounts for the VAT, not the supplier. Your software must handle this correctly on invoices and VAT returns.

Most accounting software handles Flat Rate and Cash Accounting. Domestic reverse charge is trickier. Xero handles it well with the right tax rate setup. QuickBooks requires manual adjustments in some cases. Sage 50 handles it natively. Check before you commit.

Payroll Integration: Employees and Subcontractors Together

Construction payroll is unusual because you often pay employees and subcontractors from the same business. The software should handle both in one place. Separate payroll systems for employees and CIS payments create reconciliation headaches.

FreeAgent and Sage 50 Construction handle both in the same payroll module. Xero requires an add-on like KeyPay or Rounded for CIS, with a separate payroll app for employees. QuickBooks payroll handles employees but CIS is handled in the main QuickBooks account, not the payroll module. This is workable but requires care.

If you employ site workers and pay subcontractors regularly, look for a platform that treats CIS payments as part of the payroll process, not as a separate accounting exercise.

Project Costing: Can You See Job Profitability in Real Time?

Generic profit and loss accounts tell you whether the whole business is profitable. They do not tell you whether Job A on a new build in Digbeth is making money while Job B on a refurb in Moseley is losing it. Project costing answers that question.

Sage 50 Construction is the strongest option here. It allows you to set up each contract as a separate cost centre, track labour hours, material purchases, plant hire and subcontractor costs against it, and report margin in real time.

Xero offers basic project tracking via tags and the Projects feature. It works for simple tracking but lacks the depth of Sage 50. FreeAgent's project tracking is similar to Xero's. QuickBooks has a Projects feature but it is basic.

For a construction firm running 10 or more contracts simultaneously, project costing is not optional. If your software cannot show you margin per job, you are flying blind.

Making Tax Digital for Construction Businesses

MTD for VAT is already mandatory. Most accounting software covered here is MTD compliant for VAT returns. The next change is MTD for Income Tax Self Assessment (ITSA). From April 2026, sole traders and landlords with qualifying income over £50,000 must submit quarterly updates using MTD compatible software. From April 2027, the threshold drops to £30,000.

If you are a sole trader builder turning over £70,000, you must be on MTD compatible software by April 2026. Xero, QuickBooks and FreeAgent are all MTD ready. Sage 50 requires the cloud version for MTD compliance. Check your current version if you use Sage.

Limited companies are not directly affected by MTD for ITSA, but the director's personal tax return may be. If you file a self assessment return as a director with dividend and salary income over £50,000, MTD will apply to your personal tax reporting from 2026. Your accounting software for the company does not need to handle this, but you should be aware of the timeline.

Which Software Should You Choose?

There is no single best construction accounting software. The right choice depends on your business structure, turnover and complexity. Here is a summary:

  • Sole trader or small partnership, under £100k turnover: QuickBooks Plus or FreeAgent. Both handle CIS, VAT and basic project tracking at reasonable cost.
  • Limited company, £100k to £500k turnover, contractor-led: FreeAgent or Xero with Rounded. Cost effective, good CIS handling, decent mobile access.
  • Limited company, £500k to £1M turnover, multiple contracts: Xero with Rounded and a separate project costing tool, or Sage 50 Construction if project costing is critical.
  • Established firm, £1M+ turnover, complex contracts and retentions: Sage 50 Construction or a specialist platform like Buildertrend integrated with Xero.

Whichever you choose, make sure it handles CIS automatically, supports your VAT scheme and gives you job level profitability. Anything less is a compromise that costs you time and money.

If you are unsure which platform suits your construction business, speak to an accountant who works with trade businesses. As ICAEW qualified accountants, we see the practical differences between these platforms every day. We can help you choose the right one and set it up properly for CIS, VAT and payroll.

Get in touch if you want to discuss your specific setup. We work with builders, electricians, plumbers and contractors across Manchester, Birmingham, Bristol and London.