CIS Compliance,
Built Into Acumatica
Verify subcontractors, calculate deductions, file returns, and pay HMRC. All from inside Acumatica.
Acumatica has no native CIS support. AcuCIS closes that gap, putting the complete CIS workflow inside the ERP you already run.
The CIS Problem No One Talks About
One Module. Six Steps. CIS Sorted.
Verify
Check every subbie's status directly against HMRC before the first payment. Deduction rates (0%, 20%, or 30%) are stored automatically and applied to all future bills.
Calculate
Labour and materials automatically separated on every AP bill. The correct deduction rate applied to labour only. No manual calculations, no split errors.
Pay
Pay subbies the net amount after deductions. CIS amounts are held separately for HMRC. Payment records reconcile automatically against Acumatica's AP ledger.
File
Monthly CIS300 returns prepared and submitted to HMRC directly from Acumatica. Nil returns handled automatically. Mandatory since April 2026.
Remit
Review all CIS deductions held for the period and make a single consolidated payment to HMRC. No more tracking deduction balances in spreadsheets.
Report
CIS deduction and payment statements generated straight from the payment workflow. Your subbies get what they need without anyone having to produce them manually. Full history in the inquiry screen, always.
See How AcuCIS Works in 7 Minutes
From subcontractor verification to HMRC payment. Watch the complete CIS process inside Acumatica.
April 2026 Changed the Rules
Nil returns are now mandatory.
Previously optional for inactive months. You must now file even when no CIS payments were made. Miss one, and you're in penalty territory.
The penalty regime has changed.
£100 for the first late return, rising to £3,000 or more for continued non-compliance. Penalties apply immediately under HMRC's revised framework, with no grace period.
HMRC's verification service is being upgraded.
API-based verification is replacing manual portal lookups. Systems not connected to HMRC's API will fall behind as the service evolves.
AcuCIS handles all of this. Nil returns, API verification, and direct HMRC submissions are part of the standard workflow.
Book a Personalised Demo
CIS Built In, Not Bolted On.
UK construction businesses on Acumatica have been asking for native CIS support since the platform launched in the UK. Acumatica doesn't include it. We built it.
Frequently Asked Questions
If you can't find the answer to your question, you can always write to us
CIS is an HMRC scheme requiring contractors in the UK construction industry to deduct money from subcontractor payments and pass it to HMRC. The deductions count as advance payments towards the subcontractor's tax and National Insurance. AcuCIS automates the entire process from within Acumatica: verification, deduction calculation, monthly filing, and payment, with a full audit trail throughout.
AcuCIS is built for Acumatica ERP and maintained through version upgrades. Contact us to confirm compatibility with your current Acumatica version. We'll let you know exactly what's supported and advise on any upgrade requirements before you commit.
AcuCIS connects directly to HMRC's CIS API. When you add a subcontractor, AcuCIS verifies their status in real time and returns the correct deduction rate: 0% for gross status, 20% for registered, or 30% for unregistered. Results are stored against the subcontractor record and applied automatically to all future AP bills.
Yes. Following April 2026 changes, nil returns are now mandatory, including months where no CIS payments were made. AcuCIS prepares and submits nil returns automatically, so you're covered even in quiet months without any manual intervention required.
AcuCIS is maintained by AcuPower across Acumatica version upgrades. Your data and configuration are preserved, and we test compatibility before every release. As a Gold Certified Acumatica Partner, we receive early access to upcoming releases, so we're ready before you upgrade.
Most AcuCIS implementations complete in 2-4 weeks, depending on the volume of existing subcontractor data and the complexity of your current CIS workflow. Book a personalised demo and we'll give you an accurate timeline based on your specific setup.
Don't Wait for the First Penalty.
