CIS invoicing software
CIS invoicing, done right for UK trades
Construction billing is fiddly: the VAT domestic reverse charge, CIS deductions on labour, and retention all have to be right. Worksum applies them automatically — turning a finished job’s labour and materials into a compliant invoice in one click, with the numbers laid out clearly for your customer and your accountant.
Why Worksum
VAT domestic reverse charge
Flag reverse-charge invoices and Worksum shows the customer accounts for VAT, with the correct wording.
CIS deductions
Apply the CIS deduction to labour at the right rate and show gross, deduction and net clearly.
Retention
Hold back retention as a percentage and track what’s outstanding.
One-click from job to invoice
Captured time and materials roll straight into the invoice — no re-keying.
Xero two-way sync
Push invoices to Xero and see payments flow back.
Questions
Does Worksum handle the VAT reverse charge?
Yes — mark an invoice as reverse-charge and Worksum applies the correct treatment and wording so the customer accounts for the VAT.
Can I apply CIS and retention on the same invoice?
Yes. Worksum applies the CIS deduction to the labour element and can hold back a retention percentage, showing the full breakdown.
See it on your own screen in two minutes
Explore the full system on live demo data — no card, no sales call, your data exportable from day one.