Mixed-Money Receipts: Splitting Office and Client Money Under SRA Rule 4.2

What a Mixed Receipt Is, and Why It Trips Firms Up

A mixed payment is a single receipt that contains both client money and the firm's own (office) money. It is one of the most common day-to-day situations under the SRA Accounts Rules 2019, and one of the easiest to get wrong. The classic trigger is a client who settles everything in one transfer: the firm's delivered bill, reimbursement of a disbursement the firm has already paid from its own funds, an unpaid disbursement the firm is holding before a bill, and a top-up on account of future fees. That is one payment with two different characters, part office money and part client money.

The instinct that causes trouble is to bank the whole sum in one place. Bank it all to the office account because most of it is billed fees, and the firm has under-banked client money. Bank it all to the client account and forget the office-money slice, and the firm leaves its own money sitting where it should not. Neither is compliant. The rule requires the firm to identify the parts and allocate each promptly to the correct account. This page is the dedicated procedure for doing exactly that.

It is worth understanding why mixed receipts arise so often in legal practice, because that explains why the discipline matters. Law firms bill in stages, take money on account of future work, and incur disbursements they may pay from their own funds or hold the client's money to cover. A client receiving a single statement that itemises several of these elements will very naturally pay it in one transfer. The firm has issued, in effect, a composite demand, and the client has answered it in one payment. The character of the money does not follow the single payment instruction; it follows what each part of the money actually is. So the firm's job is to look behind the one credit on the bank statement and unbundle it into its real components, then send each to where the rules require it to go.

The reason this is a genuine compliance risk, rather than a mere bookkeeping nicety, is that client money and the firm's own money are subject to completely different protections. Client money must be kept separate, must be available to the client, and may only be used for the purpose for which it is held. Office money is the firm's to do with as it likes. Blur the two and the firm has either exposed client money to its own creditors and cash-flow pressures, or has helped itself to money it has not yet earned or billed. Both are exactly the harms the Accounts Rules exist to prevent, which is why the regulator and reporting accountants treat mixed-money handling as a bellwether for how well a firm runs its client account overall.

The Rule: SRA Rule 4.2 (Prompt Allocation)

The legal anchor is Rule 4.2 of the SRA Accounts Rules 2019. It provides that you ensure that you allocate promptly any funds from mixed payments you receive to the correct client account or business account. Two things matter in that wording. First, the destination: the client-money slice must go to the client account and the office-money slice must go to the business account. Second, the timing: the operative word is promptly.

Promptly is not a fixed number of days. Rule 4.2 does not set a 14-day deadline or any other day-count. The right way to read promptly is as a standard of practice: same-day or next-banking-day allocation, judged on the facts. It is emphatically not by the month-end, and it is not park-it-in-suspense-and-sort-it-later. A firm should be able to show that its cashiering routine allocates mixed receipts promptly as a matter of course.

One trap to avoid: do not import the 14-day rule from VAT. The 14-day rule is a tax-point concept (the invoice date becomes the VAT tax point where a VAT invoice is issued within 14 days of the basic tax point). It is a different subject and has nothing to do with splitting a mixed receipt. The SRA standard for the split is promptly, full stop.

Step One: Classify Each Component (Apply Rule 2.1)

Before you move any money, dissect the payment and apply the Rule 2.1 client-money test to each part. Rule 2.1 treats money as client money where you hold or receive it in connection with regulated services delivered to a client, on behalf of a third party, as a trustee or office-holder, or in respect of your fees and unpaid disbursements before you have delivered a bill. Run that test slice by slice:

• Fees you have delivered and billed: office money. The firm has earned this and rendered a bill, so it is the firm's own money.
• Reimbursement of a disbursement the firm already paid from its own funds: office money. The firm is being repaid its own outlay.
• An unpaid disbursement the firm is holding before a bill: client money under Rule 2.1.
• A top-up on account of future costs not yet billed: client money under Rule 2.1.

For the complete four-limb definition you apply to each slice, see our guide to what counts as client money. Getting the classification right is the foundation: every later step depends on knowing which part is which.

Step Two: Allocate Promptly to the Right Account

There are two compliant ways to split a mixed receipt. The first is to bank the whole receipt into the client account and then promptly transfer the office-money slice out to the business account. The second, available where the firm can confidently identify the components on receipt, is to split at the point of banking, sending each part to its correct account directly.

The cautious default is the first route: bank to the client account first, then transfer out the clearly office-money slice. The reason is protective. If you are not certain at the moment of receipt which part is which, treating the whole sum as client money in the first instance never under-banks client money, which is the more serious breach. You can always transfer out the office slice once you are sure; you cannot easily undo client money that was wrongly kept out of the client account.

There is a practical reason the cautious default tends to win in busy practice. At the moment a payment lands, the cashier may not have full visibility of every element it covers: a fee-earner may have raised a bill the cashier has not yet seen, or a disbursement may have been paid from office funds without the cashier knowing. Banking to the client account first means the firm never inadvertently treats client money as its own while it works out the split. Once the position is confirmed, the office-money elements are transferred out cleanly. The alternative, splitting at the point of banking, is perfectly acceptable and often more efficient, but it depends on the firm being genuinely confident about the components on the day, which is a function of how well its billing and cashiering systems talk to each other.

Whichever route you take, two things hold: the allocation must be prompt, and it must be fully recorded on the ledgers. A useful test of whether a split has been done properly is to ask whether an outside reviewer, looking only at the ledgers and the bank statement, could reconstruct exactly what happened to the payment and why each part went where it did. If the postings and narratives answer that question on their own, the split is sound. If the reviewer would have to ask the cashier what they were thinking, the documentation is not yet good enough. For the conceptual difference between the two accounts, see our page on the differences between an office account and a client account.

The Rule 4.3 Discipline When the Office Slice Is Your Costs

There is a gate that catches firms when the office-money slice is the firm's own fees. Rule 4.3 provides that where you are holding client money and some or all of it will be used to pay your costs: (a) you must give a bill of costs, or other written notification of the costs incurred, to the client or the paying party; (b) this must be done before you transfer any client money from a client account to make the payment; and (c) any such payment must be for the specific sum identified in the bill of costs.

In plain terms: you cannot scoop your fee out of a mixed receipt sitting in the client account until a bill exists, and the transfer must match the exact sum billed. If the firm receives a mixed payment, banks it to the client account, and then moves out its fee before delivering a bill, that is a Rule 4.3 breach even though the money was ultimately the firm's to take. Deliver the bill first, then transfer the specific billed sum.

The sequencing point catches conscientious firms as well as careless ones, because it can feel counter-intuitive. The money is, in substance, the firm's earned fee; the client has paid it; surely the firm can take it. The rule says no, not until the firm has issued a bill or written notification of the costs incurred, because the bill is what crystallises the firm's entitlement and tells the client what they are paying for. The notification can be a bill of costs or other written notification of the costs incurred, but it must exist before the transfer, and the amount transferred must be the specific sum identified in it. A common refinement is the requirement that the transfer be for the specific sum: the firm cannot deliver a bill for one amount and transfer a round figure or an estimate, it must move exactly what the bill says.

This is also why the order of operations on a mixed receipt matters. The cleanest sequence is: receive the payment, identify the components, ensure a bill has been delivered for any fee element, then transfer that billed element to office while leaving the genuine client-money elements in the client account. If no bill has yet been delivered for the fee element, the firm holds the whole sum as client money until the bill goes out, then transfers. Doing it in that order keeps the firm compliant with both Rule 4.2 and Rule 4.3 at the same time.

Where Mixed Money Meets the Banking-Facility Rule (Rule 3.3)

Rule 3.3 prohibits using a client account to provide banking facilities to clients or third parties, and requires that every payment into, transfer from, or withdrawal from a client account relate to the delivery of regulated services. Mixed money interacts with this in a simple way: if client money is left in the client account longer than the matter genuinely needs, or if money runs through the account that is not tied to delivering regulated services, the firm drifts towards a banking-facility breach. Prompt allocation under Rule 4.2 and prompt onward use are part of staying clear of Rule 3.3. For the wider catalogue, see our page on common SRA Accounts Rules breaches and how to fix them.

Recording the Split: the Ledger Discipline

Good mixed-money handling is visible on the books. Each component should be posted to the correct ledger: the client-money parts to the relevant client ledger, the office-money parts to the office or business ledger. Each posting should carry a clear narrative that explains what it is. Any transfer between accounts should be documented, so an outsider can follow the money. And the resulting position should reconcile cleanly at the next five-weekly reconciliation under Rule 8.3, signed off by the COFA or a manager: see our page on solicitor client account reconciliation and on reconciliation frequency.

Messy mixed-money handling is one of the classic sources of suspense and unidentified balances. When a receipt is split late, partially, or without a clear narrative, the leftover often ends up in suspense and lingers. Our page on managing dormant and suspense client ledger balances covers how to keep those balances under control.

Common Mixed-Money Mistakes (and the Fix)

• Banking the whole receipt to the office account because most of it is billed. This under-banks the client-money slice, a breach of Rules 4.1 and 4.2. Fix: transfer the client-money slice into the client account promptly, document it, and assess whether to record and report.
• Transferring the fee slice before a bill exists. A Rule 4.3 breach. Fix: return the slice to the client account until a bill is delivered, then transfer the specific billed sum, and document the correction.
• Leaving the client-money slice unallocated in suspense. Defeats prompt allocation and clutters the ledger. Fix: identify and allocate it promptly, and tighten the cashiering control.
• Failing to record the split clearly. Even a correct split is hard to defend without a clear narrative. Fix: post each part to the right ledger with a clear explanation and document the transfer.

When a TPMA Changes the Picture

If the firm routes funds through a third-party managed account under Rule 11, the money is not the firm's client money and does not enter the firm's client account, so the in-account mixed-money split does not arise in the same way. The firm still has to account for its own fees, but it is not splitting client and office money inside a client account it controls. This is a different structure with its own conditions; see our page on third-party managed accounts for law firms.

Worked Example: The Classic Four-Part Settlement

The following is illustrative and is not advice on any specific matter.

A client transfers one sum to settle a matter. It covers four things: the firm's delivered bill for work done, reimbursement of a Land Registry registration fee the firm had already paid from its own funds, an unpaid court fee the firm is holding before any bill, and a top-up on account of future work.

The firm classifies each part: the delivered bill and the reimbursed Land Registry fee are office money; the unpaid court fee and the on-account top-up are client money. Following the cautious default, the firm banks the whole receipt into the client account on the day it arrives. It then promptly transfers the two office-money slices (the billed fee and the already-paid disbursement reimbursement) to the business account, and before moving the billed-fee slice it confirms that the delivered bill matches that specific sum, satisfying Rule 4.3. The unpaid court fee and the on-account top-up stay in the client account as client money until they are needed. Each step is posted to the correct ledger with a clear narrative.

The result: one payment, four postings, all done promptly, the client money never under-banked, and the firm's fee taken only against a delivered bill. At the next five-weekly reconciliation the position ties out cleanly.

Building the Routine So It Never Breaches

The way to keep mixed money out of breach territory is a simple, repeatable routine: a mixed-receipt flag on the cashiering process so these payments are spotted on arrival; a same-day or next-banking-day allocation rule so promptly is built in; a bill-before-transfer check so the firm never pulls its fee out without a bill; COFA oversight of the process; and a five-weekly reconciliation that surfaces anything left unallocated. For the role of the COFA in this, see our page on COFA responsibilities.

The single most valuable control is the flag at the point of receipt. Most under-banking and premature-transfer breaches happen not because the firm does not understand the rules but because a mixed receipt was processed on autopilot, treated like any other single-character payment. If the cashiering process prompts the operator to ask, on every receipt, whether the payment covers more than one thing, the firm catches the mixed receipts before they are mishandled. From there the routine almost runs itself: identify the components, bank to the client account, confirm a bill exists for any fee element, transfer the office elements, and leave the client money where it belongs, all on the day.

It also helps to align the people, not just the process. Fee-earners who raise composite bills should understand that the way they bill affects how the cashier has to handle the money, and that a bill must be delivered before the firm can take its fee from a mixed receipt. Where billing and cashiering work from the same system and the same matter records, the cashier can see immediately whether a bill has been delivered, which removes the main cause of premature transfers. Where they do not, the firm should build a deliberate check so the cashier confirms the bill before moving any fee element. Small frictions like that, designed in once, prevent the recurring breaches that an inspection or an accountant's report would otherwise pick up.

Finally, the routine should assume that mistakes will occasionally happen and have a clear path for correcting them. A mixed receipt mishandled and caught the same day, corrected and documented, is a minor operational slip. The same mistake left to surface months later at the reconciliation, with client money having sat in the wrong account in the meantime, is a more serious matter. A culture where cashiers correct promptly and record what they did, rather than hoping a slip goes unnoticed, is what keeps small errors small.

Speak to a Specialist

Mixed-money handling is one of the areas an SRA inspection probes hardest, and a clean, prompt, well-documented process is the best protection. If you want help building a compliant client-money cashiering routine, support for your COFA, or outsourced legal cashiering, speak to a specialist legal-sector accountant who can review your process and tighten it.