For UK contractors who suffer CIS and operate CIS
The invoice says ten thousand. The bank says seven nine. We keep the proof.
Cispack matches inbound CIS statements to invoices and bank credits, then builds the month pack your accountant can file from. Xero stays the books. You stop reconstructing the month on a Saturday.
The gap
Why the bank never matches
A £10,000 invoice is not a £10,000 credit. CIS, retention and reverse-charge VAT sit between the two. That gap is the product.
| Line | Amount | Hits the bank? |
|---|---|---|
| Labour | £8,000 | Yes, before CIS |
| Materials | £2,000 | Yes — no CIS |
| Invoice total | £10,000 | What the quote promised |
| CIS 20% on labour | −£1,600 | Contractor pays HMRC |
| Retention 5% | −£500 | Held 6–12 months |
| Money that should arrive | £7,900 | The only real number |
Illustrative. Rates depend on the contract, VAT status and HMRC verify result.
The product
Four screens. The whole month.
You already know the work. Cispack is the place it lives so nobody rebuilds it from email, a bank app and a spreadsheet on the 18th.
Overview
What is still open
Unmatched inbound lines, CIS suffered so far, and expected cash after CIS and retention. The Saturday pile, as a list.
Statements
Inbound and outbound
Type a payment and deduction statement: tax month, labour, materials, CIS rate. Match each line to an invoice and the bank credit that actually arrived.
Jobs
Invoice is not cash
Each job shows invoiced, expected after CIS and retention, and received. Retention stays visible until it is released. Open CIS lines stay marked open.
Month pack
What the accountant needs
CIS suffered and CIS operated for the tax month, with the party, the line and the matched invoice. That is the pack. They file. You do not.
Who it is for
The firm that sits both sides of CIS
Small UK contractors — typically a yard of five to twenty-five — who invoice main contractors under CIS and also deduct CIS from their own subcontractors. One person still does the statements. The accountant sees the month on the 19th. That person is the buyer.
You
Keep the proof
Enter the statement when it arrives. Match it before the credit is forgotten. See what should land on each job.
Bookkeeper
Stop re-typing
The month pack is the list they currently rebuild from PDFs. Give them suffered and operated in one place.
Accountant
Stay the books
Xero or the practice software remains the system of record. Cispack does not file CIS300 or Making Tax Digital.
Tax month
Built for the 19th
A CIS tax month runs from the 6th to the 5th. Payment and deduction statements, and the CIS300 return, are due on the 19th. A quiet month still needs a nil return. HMRC will later cross-check what you suffered against what the contractor says they operated.
Cispack keeps inbound statements and outbound deductions in the same tax month, so that cross-check is a list you already have — not a reconstruction at quarter-end.
Read how it worksWhat it is not
Honest limits
- Not an HMRC filing product. New Making Tax Digital production access is restricted. We will not file your return.
- Not your accounts package. Invoices and the VAT return stay in Xero, or wherever the accountant works.
- Not tax advice. CIS rates, reverse-charge VAT and retention depend on the contract and the HMRC verify result. You and the accountant stay responsible.