Working Capital Peg and Proof of Cash: A Buyer’s Guide
A net working capital peg is the agreed level of operating working capital the business should hand over at completion; the price is adjusted up or down if actual working capital differs. Proof of cash reconciles bank receipts and payments to the accounting records. Buyers and lenders ask for both to confirm that reported earnings are backed by cash and that the business is delivered with normal funding.
What is a working capital peg meant to achieve?
A working capital peg is the benchmark against which working capital at completion is compared. It makes sure the buyer receives a business with the normal level of operating funding assumed in the price. It is not the company’s bank balance, and it does not promise that no further funding will ever be needed.
A typical definition includes trade receivables and inventory, less trade payables and specified operating accruals. Other balances may be included or excluded depending on the business. Cash, borrowings and items treated as debt-like are usually excluded, but the agreement must say so explicitly to avoid later disputes.
The commercial aim is to prevent a price based on one level of working capital while a different level is delivered. Collecting debts early, delaying supplier payments or running down stock before completion can change the balance without reflecting normal trading. Due diligence should identify such movements and their causes.
How is a trailing 12-month average used?
A trailing 12-month average of monthly working capital is the usual starting point for the peg, because it covers a full trading cycle. It should not be applied mechanically. Check that those months reflect the business being bought, consistent accounting policies, normal trading conditions and the expected completion date.
Calculate working capital for each month using the proposed contractual definition, and reconcile balances to the ledgers. Check that monthly accounts include proper provisions and accruals; a year-end audit adjustment may reveal errors that affect earlier months too. Averaging inconsistent numbers does not remove the inconsistency.
Consider growth, decline, acquisitions, discontinued activities and changes in customer or supplier terms. In a fast-growing business a historical average may understate the funding needed; after a permanent change it may overstate it. Comparing working capital with sales, purchases and stock usage helps judge whether the average is representative.
How should seasonality and unusual items affect the peg?
Seasonality and normalisation are separate adjustments. Seasonality reflects regular swings within the trading year, while normalisation removes balances that do not reflect normal operations. The proposed peg should explain both clearly, and every adjustment should be supported by evidence rather than chosen to favour one side.
For a seasonal business, stock may build before peak sales and receivables rise afterwards, so a full-year average can differ from the level expected at a particular completion date. Compare the same months in earlier years and consider a peg for the completion month or another clearly agreed mechanism.
Normalisation may deal with very old receivables, obsolete stock, missing accruals or unusual supplier balances. Check whether the same issue already appears in the EBITDA adjustments or the debt bridge. An omitted expense and its unpaid liability can affect different parts of the price, and the agreement must avoid double counting.
How does the completion true-up work?
The share purchase agreement defines which balances are included, which policies apply and how completion working capital is calculated. The true-up then compares that figure with the peg and adjusts the price. A strong historical analysis cannot fix vague drafting or different definitions between the peg and the completion accounts.
As an illustration in index units rather than currency, assume a peg of 100 and an estimated completion balance of 104. If the agreement adjusts unit for unit, the estimate adds four units to the price at completion. If the final agreed balance is 101, the true-up reverses three of those units afterwards.
The example assumes an estimate at completion followed by final accounts; other structures, such as a locked box, work differently. Set out preparation deadlines, access to records, review periods and dispute resolution. Specify the order of accounting policies and list debt-like exclusions, so no liability appears in both working capital and net debt.
What does a bank-to-books proof of cash involve?
Proof of cash reconciles opening cash, receipts, payments and closing cash between bank statements and the accounting records for an agreed period. It investigates differences instead of assuming deposits equal sales or payments equal expenses. Its usefulness depends on including every bank account and classifying transactions accurately.
Start by listing every bank account, including payment gateways and accounts outside the main bank. Reconcile opening and closing balances and explain outstanding items. Classify receipts into customer collections, loans, owner funding, refunds and other categories, and identify transfers between accounts so they do not inflate totals.
Analyse payments by suppliers, payroll, taxes, capital expenditure, loan repayments, distributions and transfers. Timing differences from uncleared cheques and settlement delays are normal, but unexplained differences need follow-up. Link customer receipts to receivables and sales periods. A proof of cash can reveal missing entries without proving every transaction is commercially genuine.
Why do buyers and lenders ask for both analyses?
Buyers use working capital analysis to understand operating funding and price mechanics, and proof of cash to judge whether the cash records are reliable and earnings convert into cash. Lenders use both to assess repayment capacity. Neither analysis alone shows that the acquired business can service its acquisition debt.
A business with positive EBITDA can still consume cash through stock growth, slow collections, capital spending and tax payments. Strong receipts may also reflect collection of old debts or a one-off fall in working capital. Presenting these movements separately helps the buyer distinguish recurring performance from a temporary release of cash.
Agree deliverables such as monthly working capital schedules, a definition bridge, cash reconciliations and a list of open items, and state which accounts and periods were tested. Where SBA or other lender financing is involved, confirm the lender’s specific information requirements rather than assuming a standard package satisfies them.
What are common sources of dispute after completion?
Most post-completion disputes about working capital arise from unclear definitions, changes in accounting policies and balances that were not addressed when the peg was set. Clear drafting, a worked example in the agreement and consistent policies between the peg and the completion accounts prevent most of them before they start.
Typical disputes concern provisions for doubtful debts or obsolete stock, cut-off of sales and purchases around the completion date, accruals for bonuses or leave, and whether particular balances belong in working capital or net debt. Each of these should be discussed and documented during diligence rather than left for the completion accounts.
Including an illustrative calculation in the agreement, based on a recent month and using the agreed definitions, helps both sides apply the mechanism the same way. It also exposes ambiguous wording before signing, when it is far easier to correct than after the buyer has taken control.
Agree a practical dispute process: timelines for preparing and reviewing completion accounts, access to records and staff, and referral of unresolved items to an independent accountant acting as an expert. A clear process limits the cost and delay of resolving disagreements about the final adjustment.
Finally, keep the working papers used to set the peg. If a dispute arises, a clear record of the monthly calculations, adjustments and reasons agreed during negotiation is the most persuasive evidence of what the parties intended. Store it with the signed agreement and the completion accounts so it is easy to find later.
Which balances need explicit treatment in the peg?
| Balance | Question to resolve | Why it matters |
|---|---|---|
| Trade receivables | Are balances collectible and correctly aged? | Old debts can overstate delivered working capital |
| Inventory | Are valuation and obsolescence policies consistent? | Unsaleable stock does not fund operations |
| Customer advances | Operating balance or debt-like? | Cash received may carry future delivery obligations |
| Accrued liabilities | Normal running costs or one-off items? | Classification affects the peg and the debt bridge |
| Intercompany balances | Settled, kept or excluded at completion? | The calculation must match the deal perimeter |
Frequently Asked Questions
- Is working capital the same as cash?
- No. In a deal, working capital usually means defined operating assets and liabilities such as receivables, inventory and payables. Cash is normally dealt with separately through the net debt mechanism, as set out in the agreement.
- Must the peg equal the 12-month average?
- No. The trailing 12-month average is a starting point. Seasonality, growth, changes in the business, data quality and the agreed mechanism can justify a different figure, provided the reasons are explained.
- What is a true-up?
- A true-up compares actual working capital at completion, calculated using the agreed definitions, with the peg. The price is then adjusted for the difference, usually after final completion accounts are prepared and reviewed.
- Are tax balances part of working capital?
- It depends on the balance and the agreement. Routine operating tax balances may be included, while overdue or disputed taxes are often treated as debt-like or covered by tax indemnities.
- Does a balanced bank reconciliation complete the proof of cash?
- Not necessarily. Balances can agree while individual receipts and payments remain unclassified. A proper proof of cash also analyses movements, transfers between accounts and any unexplained reconciling items.
- Can the parties avoid a true-up altogether?
- Yes, by using a locked-box structure that fixes the price on an earlier balance sheet with protection against value leakage. Its risks and protections differ and need separate financial and legal review.
Related reading: Buy-side financial due diligence scope · Due diligence support · SBA 7(a) quality of earnings requirement
Sources: US SBA: SOP 50 10 lender guidance · ICAI: accounting standards and guidance
Updated October 2026 · Regi Tom Antony, FCA, MBA (Australia), ACMA (UK), CGMA (USA), CISA (USA)
Regi Tom Antony & Associates, Chartered Accountants, ICAI FRN 007670S
Link the historical analysis, the cash evidence and the contract definitions before agreeing the completion mechanism. Clear definitions and reconciled cash records reduce disputes after completion and give lenders confidence in the numbers.
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