No fluff — just straight guidance on quoting, job costing, purchase orders, invoicing, CIS, VAT and keeping multi-week projects under control.

A subcontractor invoice should be easy to trace, easy to match, and easy to query. The workflow matters more than the invoice file itself.

An invoice may be accurate and still not be payable. Construction teams need a simple rule for checking PO approval status before costs reach accounts.

A materials invoice should not be approved simply because it names the right site. Matching the purchase order, delivery evidence and invoice helps contractors catch missing, damaged or incorrectly charged goods before payment.

A queried invoice should not disappear into an email chain or remain fully approved while the site team investigates it. This practical workflow shows how construction businesses can record the issue, protect job costs and reach a clear payment decision.

Duplicate invoices can enter a construction business through several routes and still look legitimate. Here is a practical checking workflow for catching repeats, applying credit notes correctly, and keeping job costs accurate before the payment run.

Materials invoices become harder to control when the job, site, PO, and delivery context are missing. Clear project codes and site references help accounts and project teams agree what the cost belongs to before it reaches bookkeeping.

Partial subcontractor invoices are not a problem by themselves. The problem is when nobody can see what has already been claimed, approved, queried, or held back.

Month-end invoice chasing is usually a sign that job references, approvals, purchase orders, and invoice checks are not joined up early enough.

For small UK contractors, purchase orders are not just paperwork. They are the point where spend control starts, before supplier and subcontractor invoices reach accounts.
Put it into practice with BuilderDash — one system for every enquiry, job, quote and invoice.