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Piotr Szczeciński

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Locked Box vs Completion Accounts in Poland (2026): Which Pricing Mechanism Should You Use?

By Global Law Experts

– posted 2 hours ago

Who this guide is for: buyers, sellers, private equity funds, CFOs, and in-house or external counsel negotiating share purchase agreements in Poland who need a decision-focused comparison of pricing structures.

What you will get: a practical comparison of the two dominant pricing mechanisms, drafting pointers for leakage and working capital, guidance on when each mechanism is preferable in Polish transactions, and a negotiation checklist you can put to work immediately.

Practical tips, a red-flag checklist and sample clause language in this guide are drawn from cross-border SPA negotiations conducted under Polish law.

Why pricing mechanism choice matters in Poland 2026

The debate over locked box vs completion accounts poland has become one of the sharpest points of negotiation in Polish M&A as parties enter 2026, because market volatility and continued cross-border deal flow are forcing buyers and sellers to reallocate pricing risk more deliberately than ever. When earnings are less predictable and financing costs move quickly, the mechanism you choose determines who bears the risk of value slippage between signing and closing. This guide compares the two structures head-to-head, explains how each fits within Polish contract, company and accounting law, and sets out the drafting points that decide whether a deal completes cleanly or ends in a price dispute.

It is written for deal principals and their advisers who need a clear framework rather than abstract theory. Throughout, the focus stays on practical Polish market practice and the clauses that actually protect value.

Both mechanisms are recognised and enforceable under Polish law. The Civil Code (Kodeks cywilny) gives parties broad freedom to agree the price and the manner of its determination, provided the arrangement is sufficiently definite. That freedom is the foundation for either a fixed locked-box price or a formula-driven completion accounts adjustment. What differs is how the price interacts with the target’s balance sheet, when value transfers economically, and how disputes are resolved. Understanding that distinction is the first step in the locked box vs completion accounts poland decision.

What is a locked box?, definition, mechanics and legal fit in Poland

A locked box fixes the equity price by reference to a historic, agreed balance sheet, the “locked box date” or reference date. From that date, the economic risk and reward of the business are treated as passing to the buyer, even though legal completion happens later. There is no post-completion price adjustment. Instead, the price is locked, and the seller warrants and undertakes that no value has “leaked” out of the target between the locked box date and completion other than expressly permitted items.

The concept fits comfortably within Polish law. Because the Civil Code allows parties to fix a definite price, a locked box mechanism gives both sides certainty: the buyer knows the exact cash it must fund, and the seller knows the exact proceeds it will receive. The trade-off is that the buyer must be comfortable with the historic accounts, since it forgoes any right to adjust the price downward for deterioration in the balance sheet after the reference date. That is why a robust set of financial due diligence findings and a reliable, ideally audited, set of locked-box accounts are essential before agreeing to a locked box in Poland.

Locked box timetable and payments

The typical locked box timetable starts with the parties agreeing the reference balance sheet, often the most recent audited year-end or a specially prepared management account. The purchase price is calculated on that date and remains fixed. Because the buyer takes economic benefit from the locked box date, sellers frequently negotiate a value accrual or “ticker”, a daily interest-style charge that compensates them for the period between the locked box date and the payment of the price. On completion, the buyer pays the fixed sum, plus any agreed ticker, and the deal closes without a further true-up. This simplicity is a major reason the locked box is popular in competitive Polish auction processes.

Typical leakage list

Leakage is any transfer of value from the target to the seller (or its connected persons) between the locked box date and completion. The SPA must distinguish clearly between prohibited leakage, which the seller must repay, and permitted leakage, which is expressly carved out.

Item	Usual classification
Dividends or other distributions declared after the locked box date	Prohibited leakage (unless pre-agreed and listed)
Management or monitoring fees paid to the seller group	Prohibited leakage
Repayment of shareholder loans not scheduled in the SPA	Prohibited leakage
Asset transfers to the seller at non-arm’s-length values	Prohibited leakage
Transaction bonuses to management funded by the target	Prohibited unless expressly permitted
Pre-agreed dividend up to a stated cap	Permitted leakage
Intercompany trading in the ordinary course within agreed limits	Permitted leakage
Salaries and benefits paid in the ordinary course	Permitted leakage

Security and warranty interplay

In a locked box, the seller typically gives a leakage indemnity: a zloty-for-zloty undertaking to repay any prohibited leakage, usually uncapped and not subject to the de minimis and basket thresholds that limit general warranty claims. This is a critical protection because the buyer has surrendered its price-adjustment right. Because distributions and shareholder resolutions are governed by the Commercial Companies Code (Kodeks spółek handlowych), a buyer’s counsel should verify that any permitted dividend was properly resolved and that no unauthorised distribution occurred after the reference date.

Security for the leakage claim, an escrow, a retention from the price, or a parent guarantee, is common where the seller’s post-completion covenant strength is uncertain, particularly in cross-border structures where enforcement against a foreign seller could be slow.

What are completion accounts?, process, adjustments and timelines

Completion accounts take the opposite approach. Rather than fixing the price at a historic date, the parties agree an estimated price at signing and then adjust it after closing by reference to accounts drawn up as at the completion date. The adjustment typically captures actual net debt, actual working capital against an agreed target (the “peg”), and sometimes other defined items. If the target’s cash, debt and working capital differ from the assumptions built into the estimated price, the price moves up or down accordingly. This delivers a price that reflects the true financial position of the business at the moment control passes.

Because completion accounts are prepared as financial statements as at completion, they engage the Accounting Act (Ustawa o rachunkowości), which governs the preparation of financial statements, valuation principles and the accounting cut-off in Poland. The SPA must specify the accounting policies and hierarchy to be applied, usually a defined order of specific agreed policies, then the target’s past consistent practices, then the applicable accounting framework, so that the accounts are not open to manipulation. In the locked box vs completion accounts poland analysis, this is the mechanism buyers reach for when the target’s numbers are volatile or the historic accounts cannot be trusted to hold until closing.

Preparing completion accounts

The party responsible for preparing the draft completion accounts is a negotiation point in itself. A buyer that controls the business after closing will often prepare the draft, giving it an information advantage; a seller may push to prepare them, or to have joint preparation, precisely to avoid that advantage. Whoever drafts, the SPA should attach a specimen or “pro forma” completion statement showing exactly how each line item, cash, debt, debt-like items, working capital, is defined and calculated. Ambiguity here is a common cause of completion accounts disputes in Poland, because each side reads an undefined term in its own favour.

Timetable and objection windows

After completion, the preparing party delivers the draft accounts within an agreed period, often 60 to 90 days, reflecting the time needed to close the target’s books and, where relevant, involve auditors. The other party then has an objection window to review and dispute the draft. Common Polish market practice sets that window between 30 and 90 days from delivery, calibrated to the complexity of the target and the availability of auditors. If no objection is raised within the window, the draft becomes final and binding, and the adjustment is paid. Tight, clearly defined deadlines are essential; an open-ended process leaves the price uncertain for months and can delay the release of any escrow.

Dispute resolution and reference accountants

Where the parties cannot agree, most Polish SPAs refer the dispute to an independent expert, a reference accountant, rather than to a court or full arbitration. The reference accountant is typically a partner at an independent audit firm, acting as expert and not as arbitrator, whose determination on the disputed items is intended to be final and binding as a contractual matter. Auditors in Poland operate within the professional framework overseen by the Polish Agency for Audit Oversight (PANA) and the Polish Chamber of Statutory Auditors, and the SPA should specify the standards, the scope of the referral (only the items still in dispute), and how the expert’s fees are allocated.

A well-drafted reference-accountant clause narrows the dispute to defined figures and avoids re-opening settled items.

Head-to-head: locked box vs completion accounts poland, comparative table and use cases

The choice between the two mechanisms is rarely purely legal; it turns on deal dynamics, the quality of the target’s reporting, buyer and seller leverage, and cross-border tax and financing considerations. The table below summarises the core differences that drive the locked box vs completion accounts poland decision.

Feature	Locked box	Completion accounts	Typically preferred by
Price certainty	High, price fixed at signing	Lower, final price known only after closing	Locked box: sellers
Valuation date	Historic locked box date	Completion date	,
Post-closing adjustment	None (except leakage claims)	Yes, net debt and working capital true-up	Completion accounts: buyers
Leakage risk	Managed via leakage covenant and indemnity	Largely irrelevant, captured in the accounts	,
Audit and preparation complexity	Lower post-signing effort	Higher, accounts must be prepared and reviewed	Locked box: both parties value simplicity
Time to close and finalise price	Faster and cleaner	Slower, objection window and possible dispute	Locked box in auctions
Use in PE buyout	Common, especially auction exits	Common where diligence flags volatility	Depends on leverage
Use with volatile accounting numbers	Risky without strong warranties	Well suited	Completion accounts: buyers

Sector and buyer/seller preferences in Poland

In Polish practice, locked box mechanisms are often favoured by sellers and by sellers’ advisers running competitive auction processes, because a fixed price maximises certainty and lets bidders be compared cleanly on headline value. They work well for stable, cash-generative businesses with reliable, recently audited accounts, for example, established manufacturing, real estate holding structures, and mature service businesses. Completion accounts are more common where the buyer has leverage, where working capital swings seasonally, or where the target’s historic reporting is patchy. Financial-sector and heavily regulated targets often attract completion accounts because their balance sheets are more sensitive and because regulatory approval timelines lengthen the gap between signing and closing, increasing the risk of balance-sheet movement.

Example scenarios

Consider a private equity seller exiting a stable software business through an auction. The seller will often push a locked box: it fixes proceeds, avoids a lengthy post-closing true-up, and lets the fund distribute to its investors sooner. Now consider a strategic acquirer buying a manufacturing group with seasonal inventory and inconsistent management accounts. That buyer will typically resist a locked box and insist on completion accounts with a working capital peg, so that it pays only for the working capital actually delivered at closing. These two scenarios capture the essence of the locked box vs completion accounts poland trade-off: certainty and speed on one side, precision and protection on the other.

Leakage, drafting, policing and common Polish pitfalls

Leakage is the beating heart of any locked box deal. If the leakage regime is loose, the buyer’s fixed price is undermined by value quietly draining to the seller between the reference date and completion. Effective drafting requires three things: a precise definition of leakage, a clear and exhaustive list of permitted leakage, and a robust indemnity backed, where appropriate, by security. Because the underlying acts, dividends, redemptions, related-party payments, are governed by the Commercial Companies Code, counsel should map each permitted item against the corporate approvals the Code requires, so that a “permitted” distribution is also a validly resolved one.

Sample leakage clause and worked example

A workable leakage clause reads, in substance: “The Seller undertakes that between the Locked Box Date and Completion no Leakage has occurred or will occur, other than Permitted Leakage. The Seller shall pay to the Buyer on demand an amount equal to any Leakage received by or on behalf of the Seller or any Connected Person, on a zloty-for-zloty basis, without regard to any limitation on liability applicable to the Warranties.” “Leakage” and “Permitted Leakage” are then defined by cross-reference to schedules.

A worked example makes the mechanic concrete. Suppose the locked box price is PLN 100 million, fixed at a 31 December reference date. Before completion in April, the target pays the seller a PLN 3 million management fee that was not listed as permitted leakage. That PLN 3 million is prohibited leakage. Under the clause above, the buyer either deducts it from the price at completion or recovers it afterwards from the seller or the escrow. The buyer’s economic position is thereby restored to the fixed PLN 100 million it agreed to pay.

Proving leakage, evidence and accounting considerations

Proving leakage after closing depends on access to the target’s books, which the buyer usually controls once it owns the business. The SPA should oblige the seller to provide reasonable information and should require the target’s records to be kept for a defined period. Because leakage is ultimately an accounting question, did value move, and how much, buyers often reserve the right to appoint accountants to review the pre-completion period. Under the Civil Code, the buyer’s remedy for a proven leakage breach is a contractual claim for the agreed sum, and security enforcement may support it.

Practical enforcement is easier where the seller is a Polish entity with recoverable assets; cross-border sellers make escrow or a bank guarantee far more valuable than a bare covenant.

Working capital peg, equity bridge and price collars, mechanics and drafting tips

Completion accounts stand or fall on the working capital peg. The peg is the agreed “normal” level of working capital the business should hold at completion, usually derived from an average of recent monthly balances, adjusted to strip out one-offs. If actual completion-date working capital exceeds the peg, the buyer pays more; if it falls short, the price reduces. Getting the peg right, and defining working capital precisely, is where most value is won or lost.

Examples and formulae

The equity bridge translates the agreed enterprise value into the equity price the buyer actually pays. In simplified form: Equity Price = Enterprise Value − Net Debt + (Actual Working Capital − Working Capital Peg). Suppose enterprise value is PLN 200 million, net debt at completion is PLN 40 million, the working capital peg is PLN 15 million, and actual working capital is PLN 18 million. The equity price becomes PLN 200m − PLN 40m + PLN 3m = PLN 163 million. Each element is defined in the SPA, and the specimen completion statement should show exactly how each line is built up.

Drafting traps

The most damaging trap is an undefined boundary between “debt-like items” and “working capital. ” Accrued but unpaid bonuses, deferred revenue, capital-expenditure creditors and provisions can each be argued into either bucket, and double-counting or omission distorts the price. A second trap is setting the peg from an unrepresentative period, so that a seasonal target appears to have a permanent working-capital surplus. A third is failing to align the completion accounts policies with the Accounting Act cut-off, which can leave items recognised in the wrong period. Where either side fears extreme swings, a price collar, a cap and floor on the total adjustment, can bound the exposure and preserve deal certainty.

Escrow of part of the price until the accounts are final is a common companion protection.

Practical negotiation checklist for Polish SPAs (buyer vs seller priorities)

Choice of mechanism. Sellers push locked box for certainty and speed; buyers push completion accounts where reporting is weak or working capital is volatile.
Reference or completion date. Lock the date precisely and align it with a reliable set of accounts under the Accounting Act.
Leakage definition. Buyers insist on a broad definition with a tight, exhaustive permitted list; sellers seek generous permitted carve-outs and a longer notification period.
Ticker / value accrual. Sellers negotiate a daily accrual from the locked box date; buyers cap or resist it.
Working capital peg. Buyers seek a peg set from a representative averaging period; sellers scrutinise the normalisation adjustments.
Objection window. Agree a defined window, commonly 30 to 90 days, with clear consequences for silence.
Reference accountant. Name the firm or the appointing body, define the scope to disputed items only, and allocate costs.
Security. Buyers seek escrow, retention or a parent guarantee for leakage and adjustment claims, especially against cross-border sellers.
Price collar. Consider a cap and floor on the completion accounts adjustment to bound exposure.
Sample language. Insert the leakage indemnity (“on a zloty-for-zloty basis, without regard to any limitation on liability applicable to the Warranties”) and a specimen completion statement schedule.

Tax, accounting and regulatory hooks to watch in Poland

Pricing mechanics do not operate in a vacuum. The locked box vs completion accounts poland decision has tax, accounting and regulatory consequences that can change the economics or the timetable of a deal, and each should be checked before the mechanism is fixed.

Tax and VAT traps

Post-completion adjustments can raise questions about how the change in price is characterised for tax, whether it is treated as an adjustment to the purchase price or as a separate payment, which affects the tax base for both parties. A pre-completion dividend permitted as leakage may carry withholding tax consequences that shift value between the parties in ways not intended by the headline price. Related-party payments treated as leakage can also attract transfer-pricing scrutiny if they are not at arm’s length. Tax advice should run in parallel with the pricing negotiation, not after it, and specific rates and thresholds should be confirmed against current Polish tax law at the time of the deal.

Accounting cut-off and audit considerations

Completion accounts depend on a clean accounting cut-off under the Accounting Act, so the SPA must specify how items straddling the completion date are recognised. Where auditors or reference accountants are involved, their work follows the professional standards applicable in Poland, with statutory audit and auditor oversight administered by the Polish Agency for Audit Oversight (PANA) alongside the Polish Chamber of Statutory Auditors (PIBR), and the SPA should reflect that. For regulated targets, particularly in the financial sector, a transaction may trigger notification or approval requirements before the relevant regulator, such as the Polish Financial Supervision Authority (KNF).

A concentration may also require merger clearance from the Polish competition authority (UOKiK) where the applicable turnover thresholds are met, or at EU level before the European Commission where the EU thresholds apply. These approvals extend the gap between signing and closing, which increases balance-sheet movement risk and often tips the analysis toward completion accounts or a stronger leakage regime.

Conclusion, a decision framework for locked box vs completion accounts poland

The right answer to the locked box vs completion accounts poland question depends on a short set of questions. Are the target’s accounts reliable and recently audited, and is the business stable? If yes, a locked box delivers certainty and speed, which is why sellers and auction processes often favour it, provided the leakage regime and indemnity are watertight. Is working capital volatile, is the reporting inconsistent, or does regulatory approval mean a long gap to closing? If so, completion accounts with a carefully defined working capital peg and a tight objection window protect the buyer from paying for value that is not there.

In both cases, security, escrow, retention or guarantee, and clear dispute resolution are what turn a good mechanism into an enforceable one. Choosing the pricing mechanism early, and drafting it precisely, is the single most effective way to keep a Polish deal on track through 2026’s uncertain market.

For a jurisdictional review or template leakage drafting, see the M&A Lawyers Poland 2026, overview. This article is general guidance and not legal advice; you should obtain case-specific advice before agreeing any pricing mechanism.

Need Legal Advice?

This article was produced by Global Law Experts. For specialist advice on this topic, contact Piotr Szczeciński at CP | Compliance Partners, a member of the Global Law Experts network.

Sources

FAQs

What is the main difference between a locked box and completion accounts?

A locked box fixes the price by reference to a historic balance sheet and prevents any post-closing price adjustment except recovery of leakage. Completion accounts adjust the price after closing based on final accounts prepared as at the completion date, capturing actual net debt and working capital. This is the core of the locked box vs completion accounts poland choice.

Which mechanism is better for a Polish target with unstable working capital?

Completion accounts are usually better where working capital is volatile and the buyer needs a precise, closing-date adjustment. A locked box can be unsuitable for such targets unless the parties agree robust normalisation clauses, strong warranties and a comprehensive leakage regime to compensate for the absence of a true-up.

What are typical leakage items in Poland?

Permitted leakage often includes pre-agreed dividends up to a stated cap, ordinary-course intercompany trading within limits, and salaries paid in the normal course. Prohibited leakage typically includes unpermitted dividends, management or monitoring fees, unscheduled repayment of shareholder loans, and asset transfers to the seller at non-arm’s-length values.

How long should the accounts objection window be in Poland?

Common practice sets the buyer’s objection window at 30 to 90 days from delivery of the draft completion accounts. The exact period is negotiated according to the target’s complexity and the availability of auditors, with clear consequences if no objection is raised in time.

Can a buyer secure a price adjustment or leakage claim in Poland?

Yes. Escrow, a retention from the price, or a parent or bank guarantee can all secure a completion accounts adjustment or a leakage claim. The right choice depends on leverage, the size of the risk and cross-border enforceability, since enforcement against a foreign seller through the Polish courts can be slower than releasing a held-back sum.

Is the locked box or completion accounts more common in Poland in 2026?

Both are widely used. Locked box mechanisms are common in competitive auction exits and stable, well-audited targets, while completion accounts remain common where buyers have leverage, where working capital swings, or where regulatory approvals lengthen the timetable. The locked box vs completion accounts poland split therefore tracks deal type and reporting quality rather than one mechanism simply prevailing.