Construction valuations and invoicing software that gets CIS, VAT and retention right
Construction valuations and invoicing software turns the work done on site into a priced valuation, then into an invoice with CIS, VAT and retention applied correctly. Valegrid Flow builds weekly valuations automatically from approved timesheets and project expenses — or as stage-percentage progress valuations with retention — and turns them into invoices with CIS deducted on labour only and the VAT domestic reverse charge shown in the exact HMRC wording. It can then email the invoice and valuation summary automatically each week and sync everything to QuickBooks Online.
Weekly construction valuations built from approved timesheets
Valegrid Flow builds cost-plus valuations automatically each week from approved timesheets and project expenses — no retyping hours into a spreadsheet. If you work to stages instead, set the percentage complete and Valegrid Flow produces a progress valuation with retention applied.
Invoicing software that gets CIS and the reverse charge right
Invoices are generated straight from a valuation, or built manually with each line classified as labour or materials. The CIS deduction is shown correctly on the invoice — labour only — and where the VAT domestic reverse charge applies, Valegrid Flow prints the exact HMRC wording, including the amount your customer must account for.
Retention withheld and carried correctly
Retention is withheld on the valuation and carried through to the invoice, and it stays right even when an invoice is split. Credit notes are built in for when something needs correcting.
Invoice automation and QuickBooks Online sync
Switch on invoice automation and Valegrid Flow generates the invoice and emails it with a valuation summary every week. Everything syncs to QuickBooks Online, so your accounts stay in step without double entry.
How it works
- Step 1
Approve the week's timesheets and expenses
Valegrid Flow builds the valuation automatically from approved timesheets and project expenses, or you set the stage percentage for a progress valuation with retention.
- Step 2
Generate the invoice
Create the invoice from the valuation, or build it manually with labour and materials lines. CIS, the reverse charge wording and retention are applied for you.
- Step 3
Send it and sync it
Email the invoice with its valuation summary — automatically every week if you switch on automation — and sync it to QuickBooks Online.
Frequently asked questions
- How does Valegrid Flow build a construction valuation?
- Valegrid Flow builds weekly valuations automatically from approved timesheets and project expenses, which suits cost-plus work. If you value by stage instead, it produces stage-percentage progress valuations with retention withheld. Either way, the valuation is ready to turn straight into an invoice.
- Does Valegrid Flow handle CIS and the VAT domestic reverse charge?
- Yes. The CIS deduction is shown correctly on invoices and applied to labour only, with invoice lines classified as labour or materials. Where the domestic reverse charge applies, the invoice carries the exact HMRC wording, including the amount of VAT your customer must account for.
- What happens to retention on invoices?
- Valegrid Flow withholds retention on the valuation and carries it correctly through to the invoice, including when an invoice is split. Credit notes are available if a correction is needed.
- Does Valegrid Flow sync with QuickBooks?
- Yes — Valegrid Flow syncs with QuickBooks Online. You can also switch on invoice automation, and Valegrid Flow will generate the invoice and email it with a valuation summary every week.
Try Valegrid Flow on your next valuation
Built by a working subcontractor for UK construction, with CIS, the reverse charge and retention handled properly. From £19 per active worker per month.
Last updated: 4 July 2026