Invoicing & expenses for UK contractors
Capture receipts. Send compliant invoices. Straight into Xero.
INVOX is the contractor billing platform for UK firms. Snap a receipt, build an IR35-clean invoice, and post it to your books — in minutes, not weekends.
No card required · UK-based support · Built for HMRC
Trusted by UK contractors and the firms that hire them
Why finance teams choose INVOX
Built for the way UK firms actually bill.
Policy-enforced expenses
Set per-category limits, mileage rates, and receipt rules. Out-of-policy claims are flagged before they're approved.
IR35-clean contractor invoices
Invoices are issued by the contractor, not your company — keeping you off-payroll and on the right side of HMRC.
Mobile receipt capture
Contractors photograph receipts on-site. AI extracts supplier, VAT, currency, and category in seconds.
One-click Xero sync
Approved invoices post to Xero as bills with the correct contact, account code, and tracking — fully reconciled.
White-label per company
Run INVOX under your own brand and domain. Your clients see your logo, your colours, your portal.
How it works
From shoebox to Xero in three steps.
Capture receipts
Snap on mobile or forward by email. Our AI reads the line items, VAT, and category.
Build & approve invoices
Day rates and expenses roll into an IR35-clean, contractor-issued invoice — approved in one tap.
Sync to Xero
Post bills to the right accounts and tax codes. Reconciled in your books before the client opens the email.
Your brand, end to end
INVOX disappears behind your brand.
Every contractor login, every client portal, every email — under your domain, in your colours. Your clients never see the word INVOX.
- White-label client portal under your domain
- Custom logo, brand colour, and typography
- Per-tenant branding — different brands, one platform
Stop chasing receipts. Start closing months on time.
See how INVOX handles your firm's contractor billing — usually a 20-minute call.