Working capital peg defense — the operator's view of the most-fought line.

01 What the peg is and why it is worth fighting

The working capital peg is the level of net working capital the buyer expects to be left in the business at close. Net working capital, in the standard mid-market definition that Kreischer Miller, Schneider Downs, EisnerAmper, BDO, and Baker Tilly all converge on, is current assets excluding cash less current liabilities excluding funded debt — adjusted for any items the parties have agreed to treat as debt-like and pull into the debt schedule. The peg is the target; the closing balance sheet calculates the actual. If actual is above the peg, the seller gets the excess dollar-for-dollar. If below, the seller pays the shortfall.

The level of the peg matters because every dollar of working capital left in the business at close is a dollar of value transferred from the seller to the buyer. If the peg is set $3M above where the business naturally operates, the seller has contributed $3M of incremental funding to the buyer's balance sheet that was never in the headline price. The Grant Thornton M&A dispute survey ranks net working capital among the most frequent and material sources of post-closing conflict, and commentary from Lincoln International, Holland & Knight, Thompson Coburn, NC Bar, and Robbins DiMonte converges on the same pattern: peg disputes commonly move 2-5% of EV in ordinary mid-market deals and 5-10% when the business has seasonality, growth, or contested debt-like items.

Convert to multiples. At 8x EBITDA, a 2-5% EV swing is 0.16-0.40 turns; at 9x, a 5-10% swing is 0.45-0.90 turns. Across the twelve-deal sample the median has run 0.5 turns — on a $60M-revenue operating company doing $7M of EBITDA at 9x, a $3.2M swing on close. Meaningful in dollars, and invisible in the headline multiple, which is what makes it the most-conceded line in the deal.

02 The buyer's view — and the buyer's anchor

The buyer wants the peg high. That is rational, not aggressive. A high peg locks in more working capital at close, protecting the buyer from needing to inject cash in the first 90 days post-acquisition. Sponsors know nothing destroys an early-LBO IRR faster than a day-one working-capital top-up. Strategics face the same constraint through a different lens — internal capital-allocation policies that forbid material post-close cash injections in the first twelve months. Both buyer types arrive with the same incentive: anchor the peg as high as you can defend.

The buyer's anchor, in practice, is some version of the highest-month average over the trailing twelve, presented as the normalised operating need. Sponsors lean on the most recent three-month average when working capital has drifted up, framing it as current run-rate. Strategics more often cite the trailing-six-month peak. Both tactics share the same structural feature: pick a window where working capital was elevated, present it as the new baseline, and argue anything lower is the seller funding their own growth on the buyer's nickel.

Three other moves show up in nearly every mid-market peg negotiation. First, the growth argument: "We paid for forward growth, so the peg must reflect the working capital that supports that growth." Second, the debt-like reclassification push: items historically treated as operating payables — over-aged AP, customer deposits, deferred revenue, accrued bonuses, tax accruals — get reclassified as debt-like, mechanically raising the peg by removing liabilities from NWC. Third, the escrow lever: a contested peg paired with a larger working-capital escrow that captures the same dollars through a different door. Each tactic alone can be worth 0.1-0.3 turns. Stacked — and they almost always come stacked — they explain the 0.5-turn median across the sample.

03 The seller's view — and the seller's anchor

The seller wants the peg low. Every dollar the peg drops below the trailing-twelve average is a dollar of cash the seller takes home rather than leaves on the buyer's balance sheet. The seller's principled anchor is the trailing-twelve average of net working capital, normalised for one-time spikes, seasonality, and structural changes (term renegotiations, customer concentration shifts, channel re-mix). This is the anchor Kreischer Miller, EisnerAmper, BDO, Baker Tilly, and Schneider Downs all describe as the standard mid-market methodology — and it aligns the peg with the trailing-twelve EBITDA the buyer used to set the headline price.

The neutrality principle is the seller's core argument. The peg is not meant to re-cut the price. The buyer has already valued the business on trailing-twelve EBITDA; the working capital required to generate that EBITDA, over that same trailing-twelve, is the working capital embedded in the valuation. If the peg drifts above the trailing-twelve normalised average, the buyer is mechanically re-cutting the price by capturing extra working capital that was never in the headline math. Schneider Downs and Thompson Coburn both make this argument explicitly: a peg set systematically above trailing-twelve normalised is a hidden discount on the headline price.

The seller wins the principled argument and then has to defend it line by line. Buyers do not concede on methodology in the abstract; they concede when the seller can point to a specific spike, a specific dollar quantification, a specific reversal pattern in the data. The principle gets you into the room. The documentation closes the gap.

04 The three documents that win the negotiation

Across the twelve deals in the sample, the sellers who held their preferred peg level — within 0.1 turns of the trailing-twelve normalised average — had three documents in the data room before the process opened. The sellers who conceded 0.5-0.8 turns had at most one, usually built late. The three are not exotic. They are standard sell-side QoE deliverables, and any seller can build them in 6-8 weeks with disciplined effort. Below 6 weeks, the documents cannot be built credibly and the seller loses by default.

Document one — the 24-month working capital schedule by component

Net working capital broken out by component (operating AR, inventory, prepaids, AP, accrued payroll, accrued expenses, other), month by month, for at least 24 months. Reconciled to the monthly balance sheets and trial balance. Cash and funded debt explicitly excluded. A mapping tab showing every GL account, its NWC component, and the include/exclude flag with rationale. The schedule supports seasonality charts (NWC and each component as a percentage of revenue, by month) and a DSO/DIO/DPO trend chart. With 24 months, the seasonal pattern is visible in two full cycles and the buyer's current run-rate argument is mechanically rebutted by the data.

Document two — the named one-time spike list

A named, dated, dollar-quantified list of every one-time anomaly that has elevated working capital over the trailing 24 months. Each entry: affected line item, dollar impact versus a typical month, business rationale, reversal pattern, supporting documentation in the appendix. Typical lists run 12-25 entries. Early supplier payments to capture cash-discount terms. Slow-pay behaviour from named customers, with reversal dates. Inventory builds for launches or ahead of tariff effective dates. Returns spikes from named warranty incidents. Every entry passes a materiality test (>2-3 standard deviations from the 24-month line-item mean) and a persistence test (one-off vs recurring; recurring off-cycle items belong in seasonality, not the spike list). Include a "NWC with vs without spikes" side-by-side. This is the single highest-leverage document in the package because it converts the buyer's highest-month anchor into a fight over specific dollars where the seller has the documentation and the buyer does not.

Document three — the normalised operating need methodology memo

A 2-3 page memo documenting how the peg is derived. Definition of NWC (which GL accounts in, which out). Historical window chosen (12, 18, or 24 months) and why. Seasonality adjustments cross-referenced to the spike list. Pro-forma adjustments for structural changes. Final peg formula. Three peg variants computed — trailing-twelve normalised, 24-month average, and a seasonally-matched-to-close window — so the alternatives are already on the table. Plus operating-ratio sanity checks (DSO, DIO, DPO implied by the peg vs trailing-twelve actuals) and a short note on alignment with normalised EBITDA, so the buyer's QoE team cannot argue the peg is inconsistent with the earnings number they are paying off.

With these three in the data room before the process opens, the seller leads the anchor. The buyer's QoE team walks the schedule, tests the spike list, runs sensitivities — and finishes with the seller's peg as the baseline. The negotiation that remains is over specific debt-like reclassifications and collar size, not the underlying methodology. Without the three, the buyer's QoE team builds their own schedule and the seller spends the next four weeks defending from behind.

05 The advisor selection point — and why it lands here

Peg negotiations are won and lost by the sell-side advisor's preparation more than by the buyer's aggression. Across the sample, variance in peg outcome is explained more by advisor process discipline than by category, deal size, buyer type, or headline multiple. Two characteristics separate the advisors who hold the seller's preferred peg from the ones who do not.

The first is whether the three-document framework is built as standard practice or as a reactive deliverable. Advisors who build it as standard practice put the 24-month schedule, spike list, and methodology memo in every sell-side prep regardless of buyer signal — the work is in the data room when the process opens. Reactive advisors wait for the LOI, the QoE scope, and the buyer's first peg proposal before building the counterposition. By that point the buyer has anchored, the QoE has walked the data, and the seller is negotiating from behind. The lead-time gap is fatal.

The second is whether the advisor has walked the methodology through QoE shops repeatedly. The mid-market QoE providers — Bonadio, Stout, Riveron, Carter Morse, the Big Four QoE teams — each have idiosyncratic preferences on debt-like reclassification, acceptance criteria for spikes, and sensitivity scenarios. An advisor who has walked the three documents through each shop knows which items will draw scrutiny and pre-builds the support. An advisor walking it through for the first time learns those preferences during diligence, after the buyer has formed opinions. Friction translates directly to peg concessions.

The cost-benefit math is direct. The median peg in our sample is worth $3.2M on a $60M-revenue operating company at 9x. Sell-side advisor fees run 2.5-4% of transaction value — roughly $1.5-2.4M. The peg defence alone justifies the fee; everything else is upside. The companion reads on the buy-side side of the same workstream are our buy-side QoE post on what the QoE actually finds and our QoE checklist template for DTC and CPG acquisitions. The same methodology applies in healthcare and hospitality with sector-specific working-capital component weightings — see our buy-side QoE for multi-site healthcare and buy-side QoE for hospitality groups.

06 Where the negotiation actually lands

Even with the three documents in the data room and a disciplined advisor leading, the peg rarely closes at exactly the seller's trailing-twelve normalised number. Buyers have legitimate concerns about growth, structural change, and closing-date seasonality. Three compromise structures show up in the deals that closed cleanly.

1. 01
   Trailing-twelve normalised plus a small buffer. Peg lands at the seller's trailing-twelve normalised number plus a 5-10% buffer for buyer comfort. In the median deal in our sample, this is the structure that closed — meaningful enough for the buyer to feel protected against a Day-1 cash need, small enough for the seller to defend as a reasonable concession.
2. 02
   A band or collar around the normalised number. Peg expressed as a range — $10.0M-$11.0M against a central $10.5M — with no purchase-price adjustment unless closing NWC falls outside the band. Collar widths of 1-3% of EV are typical. Works best when both sides expect closing-date timing volatility and want to avoid relitigating the peg in the true-up.
3. 03
   Blended TTM and recent-period weighting. When the buyer's growth argument is genuinely supported — visible revenue acceleration in the last two quarters, signed contracts pre-loading the forward case — the peg becomes a weighted average of trailing-twelve normalised and the most recent 3-6 months. 50/50 is common; 70/30 in favour of trailing-twelve is seller-friendly; 30/70 is buyer-friendly. The weighting itself becomes the negotiation.

Debt-like reclassifications are the other compromise dimension. The seller can concede that over-aged AP, customer deposits not tied to short-cycle revenue, and deferred revenue (SaaS or subscription) get pulled out of NWC into the debt schedule. The critical seller insistence: any item reclassified as debt-like at close must also be removed from the historical NWC used to derive the peg. Without that symmetry, the buyer double-counts the reclassification — once at close (lower NWC) and once in the peg (lower target). Sophisticated advisors check this obsessively. Less-experienced advisors miss it routinely, and the seller pays the gap.

07 The post-close true-up — and what closing balance sheets reveal

The peg negotiation does not end at signing. The two-step mechanism standard in mid-market deals — preliminary adjustment at close based on the seller's estimate, final true-up 60-120 days post-close once the buyer prepares the closing balance sheet — means the peg dispute can re-emerge after the seller has left the room. Lincoln International and Holland & Knight describe the same pattern: the true-up frequently becomes a second-round peg negotiation, with the buyer's post-close accounting team finding new debt-like items, reclassifying accounts, or applying different reserve methodologies than the practice the peg was based on.

Three defensive structures, written into the purchase agreement at signing, reduce true-up risk materially. First, the NWC definition exhibit: a schedule attached to the SPA listing every GL account in NWC and every account out, with methodology for AR reserves, inventory standard cost, and accruals explicitly specified. Vague language like "consistent with past practice" leaves room for reinterpretation; the explicit schedule reduces the dispute surface to near-zero. Second, the neutral-accountant clause: a named third-party accountant who resolves unresolved disputes within 30 days, with cost split by proportional dollar outcome. Third, a materiality threshold (often 0.25% of transaction value) below which the buyer must accept the seller's estimate.

What closing balance sheets actually reveal, across the sample: where the peg was set above the trailing-twelve normalised average, closing NWC typically reverted toward the lower normalised level and the seller suffered a downward adjustment — validating the seller-side argument that the peg was a hidden price re-cut. Where the peg was set at or below trailing-twelve normalised, closing NWC came in at or above the peg in most cases and the seller received an upward true-up. The pattern is consistent enough it has become my go-to closing argument with wavering sellers: concede the buyer's peg and you concede it three times — at signing, at the preliminary adjustment, and at the true-up. That argument lands.

08 Three questions 90 days before a process opens

The 18-month exit-prep calendar is the right frame for the broader sell-side discipline. Within it, peg defence has a 90-day check-in three months before the process opens — late enough for the trailing-twelve to reflect the most recent operating period the buyer will see, early enough that the three documents can still be built before the data room goes live. The questions are direct.

1. Is the 24-month working capital schedule by component built, reconciled to monthly balance sheets, with seasonality charts and a complete GL-to-NWC-component mapping?
2. Is the one-time spike list named, dated, and dollar-quantified across the trailing 24 months, with supporting documentation in the appendix and a "with vs without spikes" comparison?
3. Has the methodology memo been written, three peg variants computed, sanity checks done, and the methodology pre-walked with a QoE provider so the seller knows which items will draw scrutiny?

If any answer is no, 90 days is enough to close the gap if the work starts immediately. Below 60 days, the documents cannot be built with rigour. Below 30 days, the seller should plan to concede the peg and recover value elsewhere — through commercial-DD readiness, customer-concentration documentation, or escrow structure. Our commercial-DD note on customer concentration and churn is the companion read for the workstream that most often picks up the slack when peg defence is too late.