CIS invoice app for UK contractors & subcontractors

CIS sorted from the van. Deductions, statements, tax-year totals — one WhatsApp.

Start free trial How it works

Updated 13/10/2026

For subcontractors

Turn on CIS in Settings and every invoice you raise shows the deduction on labour (20% registered, 30% unregistered) and the amount payable — so contractors pay you the right amount first time. Text CIS REPORT any time for your tax-year deductions-suffered total, ready to offset against your bill.

For contractors paying subbies

Text "CIS invoice John's Electrical, labour £800, materials £300" and GraftG generates an HMRC-style payment & deduction statement PDF: labour, materials, the deduction on labour only, and the net amount to pay. GraftG remembers each subbie's rate for next time.

Deduction on labour only — always right

CIS is charged on the labour element, never materials. GraftG splits them for you and does the maths, including the 30% rate for unverified subcontractors and gross-status (0%) subbies.

Included in the Pro plan

CIS tools are part of GraftG Pro (£24/month) alongside pay-online invoices, branding and automatic payment chasing. 14-day free trial to try the basics.

How do I send a CIS invoice on WhatsApp?

Switch CIS on once in Settings with your rate. Then invoice the way you always do on WhatsApp — "Invoice Cooper Builders, second fix, 2 days labour, £300 materials", ACCEPT on a quote, or END JOB then INVOICE — and the PDF shows labour and materials separately, the CIS deduction on the labour only, and the amount the contractor should pay. Forward it to the contractor from the chat.

Real WhatsApps. Real replies.

CIS invoice John's Electrical, labour £800, materials £300
CIS statement generated ✓
John's Electrical
Labour: £800.00
Materials: £300.00
CIS deduction (20%): −£160.00
Net payable: £940.00

📄 [PDF attached]
CIS REPORT
CIS deductions 2026/27

As contractor:
3 statements · £480.00 deducted

As subcontractor:
£1,240.00 suffered

Offset against your tax bill.

🧮 Free calculators

🏗️ CIS Deductions👷 Multi-Subbie CIS💷 Income Tax View all →

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