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The problem
Rebilling puts other people's money through your account
Rebilling (or pass-through billing) is invoicing a client for work or costs supplied by someone else — freelancers, subcontractors, media spend, software — usually with a markup. The agency collects the full amount and pays the contractors out of it, so every rebilled invoice is really several: the client's, one per contractor, and your margin in between. Done in a spreadsheet, the margin is the last number anyone sees, and a client who pays late means contractors are paid from your own cash.
In the UK, rebilled contractors carry off-payroll (IR35) status questions and, on construction work, CIS deductions of 20% or 30% on labour — obligations the client invoice doesn't show. Each contractor's payment needs its own document and its own trail back to the client money that funded it.
Client invoice · INV-2291Rebilled
3 contractors
£11,745
Your markup · 22%
£2,584
Client paidday 38
£14,329
What Fynex runs
How contractor rebilling runs on Fynex
One client invoice in; your margin, then every contractor, out.
Rebilling
Invoice the client with your markup built in
Contractor work and pass-through costs go on the client's contract with your markup as a percentage or a fixed fee. The client gets one invoice that reads the way you sold the work.
Margin first
Your margin separates on receipt
The moment the client pays, your margin moves into your own wallet — visible and spendable while the contractors' share is still waiting to be paid out. Your cut is never the residue of a spreadsheet.
INV-2291 · paid
Received
£14,328.90
Your marginto your wallet
£2,583.90
Contractors3 statements
£11,745.00
Party statements
Each contractor paid against their own statement
Every contractor gets a statement for their own amount, and is paid from the client's money once it has arrived — never from your cash while the client is still at day 38.
Settlement trace
One trail from client invoice to every payout
Each client invoice traces to the payment that settled it and to every contractor payout it funded, so the record behind each contractor's payment — and your IR35 and CIS paperwork — sits on the same trail.
How we compare
The same job, with the leaks closed
Point tools solve part of it. Fynex runs the whole thing on one platform.
The problem
Other platforms
Recommended
!Invoice the client with a markup
✕Other platformsBuilt line by line from contractor invoices.
✓FynexContractor work and markup on the client's contract.
!Know your margin
✕Other platformsWorked out after everyone is paid.
✓FynexSeparated on receipt, in your wallet before payouts.
!Pay contractors
✕Other platformsBank transfers from your own account, often before the client pays.
✓FynexEach paid against their own statement, from the client's money.
!Year-end contractor records
✕Other platformsRebuilt from bank statements.
✓FynexInvoice-to-payout trail per contractor, exported.
FAQ
Questions, answered
Rebilling is charging a client for work or costs supplied by third parties — freelancers, subcontractors, media, licences — usually with a markup on top. The agency invoices the client for the total, collects it, and pays the third parties out of it. It is also called pass-through billing or cost rebilling; the contractor side is often self-billed.
Either as a percentage on top of the contractor's cost (a 20–30% markup is common) or as a fixed management fee. In Fynex the markup is part of the client's contract, so the client invoice shows the total the way you sold it, and your margin is separated automatically when the invoice is paid.
Paying contractors before the client pays funds the client's payment terms from your own cash. With Fynex the client's payment arrives first, your margin separates on receipt, and each contractor is paid from the money that funded their work — against their own statement. The same mechanism powers split payments and payouts.
Under the off-payroll rules (IR35), a medium or large client decides a contractor's status and the fee-payer — often the agency — carries the tax liability if the contractor is inside IR35. On construction work, CIS requires deductions of 20% (registered) or 30% (unregistered) from the labour element. Fynex doesn't make those determinations; it gives each contractor payment its own statement and trail back to the client invoice.
Yes. Every Fynex invoice can be traced to the payments that settled it and the payouts those payments funded, with the amount attributed to each — the settlement trail for any client, contractor or month, documented in the invoices reference. For the retainer itself, see retainer billing.
Keep building
The rest of the agency billing layer
Every guide below runs on the same contracts, invoices and payouts. Start with one, or run the whole stack.
We can be your Merchant of Record and hold the funds. Most tools can't, because they don't hold the licence.
FCA-authorised EMI
An e-money institution via Fondy. We can hold and move your funds.
Licence
E-money institution
FCA
Client funds
Safeguarded
PCI DSS Level 1
The highest card-data security standard, on by default.
Card data
PCI DSS
Level 1
Encryption
On by default
Audit logs
Every movement traceable and ready for review.
Activity
Payout · £23,84714:02:11
Logged
Split · ORD-2024-00114:02:09
Logged
Built-in KYC / KYB
The switch that turns the business on.
Verification
KYB · Northwind Labs Ltd
Approved
KYC · J. Whitfield
Approved
We do Fridays so you don't have to.Payouts at midnight. You, asleep.Invoices that chase themselves. Ruthlessly.We carry the chargebacks. You carry on.We do Fridays so you don't have to.Payouts at midnight. You, asleep.Invoices that chase themselves. Ruthlessly.We carry the chargebacks. You carry on.We do Fridays so you don't have to.Payouts at midnight. You, asleep.Invoices that chase themselves. Ruthlessly.We carry the chargebacks. You carry on.
Bill the client once. Your margin first, then everyone else
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