Sale Process

The M&A Closing Checklist: What Has to Happen in the Final 30 Days Before You Close

The final 30 days before an M&A close involve more moving parts than most founders anticipate. A missed consent, a failed condition, or an unresolved purchase price item can delay or kill a deal in the final stretch. Here is the complete checklist for what has to be done, and who has to do it.

Best for:Founders preparing for a saleM&A advisors & bankers
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Key takeaways

  • The period between signed purchase agreement and close is not a waiting period, it is an execution period. Every closing condition must be satisfied, every required consent obtained, and every closing deliverable prepared on a specific timeline or the closing date slips.
  • Third-party consents, from landlords, customers, lenders, and government agencies, are the most common source of closing delays. Many require 30–60 days of advance notice, meaning the request must go out the day the purchase agreement is signed, not two weeks before the scheduled close date.
  • The closing funds flow, the calculation of exactly how much cash goes where at close, is prepared by the seller's attorney and agreed by both parties before the wire instructions are sent. Errors in the funds flow statement are one of the most common sources of last-minute closing problems.
  • The pre-close operating covenant period, the time between signing and closing during which the seller must operate the business in the ordinary course, requires active management. Ordinary course violations (major contracts signed, significant capital expenditures, key employee departures) can give the buyer grounds to delay or refuse to close.
  • Most closings are remote, wire transfers and electronic document exchange rather than a physical closing table. The closing process still requires a sequenced exchange of documents and funds that must be coordinated precisely across multiple parties.

In this article

  1. Third-party consents: start the day you sign
  2. The closing deliverables: what each party must provide
  3. The funds flow statement: how the money moves
  4. The pre-close operating covenants: what you cannot do between signing and closing
  5. The closing day sequence
Research finding
SRS Acquiom M&A Deal Terms Study 2024ABA M&A Committee Research

The median time from signed purchase agreement to close in lower-middle-market transactions is 45–75 days. Transactions that extended beyond 90 days were primarily delayed by: third-party consent issues (38%), regulatory filing requirements (22%), purchase price adjustment disputes (18%), and pre-close covenant violations (12%).

Third-party consents, from landlords for lease assignments, lenders for change of control, customers for contract assignments, and government agencies for license transfers, were identified as the closing condition most frequently underestimated for lead time. 44% of sellers began consent solicitation more than 14 days after the purchase agreement was signed, creating timeline risk.

Funds flow errors, discrepancies in the closing statement that required correction on or after the closing date, occurred in 8% of lower-middle-market transactions, with a median resolution delay of 3–5 business days and a median dollar impact of $45K.

The purchase agreement is signed. The deal is done, except it is not done. The period between signing and closing is an execution phase with a defined set of deliverables, conditions, and approvals that must be completed before the wire transfers and the ownership changes. For founders who have been through a 9-month sale process, this period can feel like a formality. It is not.

Closings that slip past the scheduled date are expensive in ways beyond the inconvenience: seller financing costs continue, buyer financing commitments can expire or require extension fees, management attention remains split between the deal and the business, and every additional week of pre-close confidentiality management creates organizational risk. The closing checklist is not administrative, it is the project plan for getting the deal done.

45–75 days

Median time from signed purchase agreement to close in LMM transactions

38%

Share of delayed closings where third-party consent issues were the primary cause

44%

Share of sellers who began consent solicitation more than 14 days after purchase agreement signing

Third-party consents: start the day you sign

Third-party consents are approvals required from parties other than the buyer and seller, landlords, lenders, major customers, government agencies, and franchise or license grantors, before the transaction can close. In a stock purchase, the company itself continues and most contracts transfer automatically; in an asset purchase, many contracts require affirmative assignment. Even in stock purchases, change-of-control provisions in leases, credit agreements, customer contracts, and licenses may require lender or counterparty consent.

1

Common Third-Party Consents and Their Lead Times

2

Landlord consent for lease assignment or change of control

Required in most commercial leases when ownership changes; landlord has the right to approve or negotiate modified lease terms. Lead time: 21–60 days. Start: the day the purchase agreement is signed.

3

Lender consent for change of control

Most credit agreements require lender consent or concurrent payoff before a change of control. If the seller's credit facility will be paid off at close, coordinate the payoff amount and mechanics with the lender. Lead time: 10–21 days.

4

Major customer contract assignment

Contracts with change-of-control or assignment provisions require customer consent. Major customers should be briefed by the seller before consent is formally requested. Lead time: varies by customer; allow 30–60 days for large enterprise customers.

5

Government licenses and permits

Licenses that are personal to the business owner (professional licenses, state contractor licenses, certain regulated industry permits) may not automatically transfer and may require re-application or notification. Lead time: 30–120 days depending on agency.

6

HSR filing (if applicable)

Transactions above the HSR filing threshold (approximately $119M in 2024) require pre-merger notification to the FTC and DOJ. Most LMM transactions fall below this threshold. Lead time: 30-day waiting period from filing.

The consent tracking log, a simple spreadsheet listing every required consent, the counterparty, the request date, the response date, and the status, should be created the day the purchase agreement is signed and updated daily by the seller's transaction counsel. Consents that are not tracked fall behind; consents that fall behind delay the closing.

The closing deliverables: what each party must provide

The purchase agreement specifies the closing deliverables, the documents each party must execute and deliver at or before close for the closing conditions to be satisfied. Preparing these deliverables before the scheduled close date, not the day before, is the difference between a smooth close and a last-minute scramble.

1

Seller's Closing Deliverables (Typical Stock Purchase)

2

Corporate authorization documents

Board of directors resolutions authorizing the transaction; shareholder resolutions or written consents approving the sale; officer's certificate certifying that the seller's representations remain accurate as of the closing date.

3

Stock certificates and transfer instruments

Original stock certificates (if certificated) and executed stock powers transferring ownership to the buyer; or DTC transfer instructions for electronically held shares.

4

Payoff letters for existing debt

Written payoff letters from each lender confirming the exact amount required to pay off existing debt, including per-diem interest through the expected close date, and agreeing to release all liens upon receipt of the payoff amount. These letters must be obtained 3–5 business days before close to allow the buyer's counsel to review.

5

Release of liens and encumbrances

UCC termination statements or lien releases from all secured lenders; releases of any other encumbrances on the company's assets.

6

Key employee agreements

Executed employment agreements, offer letters, and retention bonus agreements for key employees who must be under agreement as a closing condition.

7

Non-compete agreements

Executed non-compete agreements from the seller and any other principals required by the purchase agreement.

8

Disclosure schedule updates

Any required updates to the disclosure schedules for events occurring between signing and closing (called "bring-down" schedules).

9

Funds flow statement

The detailed calculation of how closing proceeds are allocated: gross enterprise value, minus indebtedness, minus transaction expenses, minus working capital adjustment, equals net proceeds to seller. Agreed between both parties' counsel before closing.

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The funds flow statement: how the money moves

The funds flow statement is the document that answers the question "who sends how much money to whom, in what order, at close?" It is prepared by the seller's attorney, reviewed by the buyer's attorney, and agreed by both parties before the wire instructions are sent. Errors in the funds flow statement, a missing payoff, an incorrect transaction expense, a working capital adjustment applied twice, are one of the most common sources of closing-day problems.

1

What Appears in a Typical LMM Funds Flow Statement

2

Gross enterprise value

The headline purchase price from the purchase agreement

3

Less: Indebtedness

Payoff amounts for each debt instrument, from payoff letters obtained before close

4

Less: Transaction expenses

Banker fees, legal fees, accounting fees, and any other costs the seller agreed to pay at close

5

Less/Plus: Working capital adjustment

The difference between the estimated closing working capital (calculated 3–5 days before close) and the target working capital peg

6

Less: Escrow / indemnification holdback

Any amount held back in escrow for post-close indemnification claims

7

Net proceeds to seller

The amount wired to the seller's designated account at close

8

Payments to third parties

Payoff amounts wired directly to each lender; banker success fee wired to banker's account; legal fees wired to seller's counsel

9

Rollover equity investment

If applicable, the amount of the seller's rollover that is re-invested at close rather than paid as cash proceeds

Prepare the funds flow statement at least 5 business days before the scheduled close date. Both parties' counsel must review and approve it; any disagreement about the calculations must be resolved before closing day. A funds flow dispute on closing day, when wires are scheduled and parties are standing by, is the worst time to be arguing about whether a particular item is included in "Indebtedness."

The pre-close operating covenants: what you cannot do between signing and closing

Between the purchase agreement signing and the closing date, the seller is typically required to operate the business "in the ordinary course, consistent with past practice." This covenant protects the buyer from material changes to the business between signing (when the price was set) and close (when they take ownership).

The ordinary course covenant matters because it defines what the seller can and cannot do for 45–75 days while still owning the business. Violating it, even inadvertently, gives the buyer grounds to delay or refuse to close, or to seek an indemnification claim post-close.

ActionOrdinary Course StatusWhy It Matters
Signing a new customer contract consistent with historical contract termsGenerally permittedNormal course of business; buyer is acquiring a going concern
Signing a new contract with material non-standard terms (unusual payment, exclusivity, or change-of-control provision)Requires buyer consentNon-standard terms alter the business the buyer agreed to acquire
Making a significant capital expenditure (e.g., purchasing major equipment)Generally requires buyer consent if above a defined threshold (often $50–100K)Changes the balance sheet the buyer agreed to acquire; may affect working capital calculation
Terminating or replacing a key employeeRequires buyer consent or notificationAffects management team stability; may be a closing condition
Paying discretionary bonuses outside the ordinary courseRequires buyer consentIncreases the indebtedness deducted from the purchase price if paid at close; alters the ordinary course compensation structure
Making any acquisition, investment, or material commitment outside the ordinary courseRequires buyer consentChanges the scope of what the buyer is acquiring

The closing day sequence

1

Closing Day Sequence for a Remote LMM Stock Purchase

2

Morning: final confirmations

Confirm that all closing conditions are satisfied: financing is confirmed, all third-party consents are in hand, all closing deliverables are in the electronic closing folder, the funds flow statement is agreed, and both parties' counsel confirm they are ready to close.

3

Mid-morning: document release

Both parties' counsel release their pre-signed documents from escrow in the agreed sequence. The sequence typically is: (1) seller's closing deliverables released; (2) buyer confirms receipt and satisfaction of closing conditions; (3) buyer authorizes wire transfers.

4

Late morning: wire initiation

Buyer initiates wire transfers per the funds flow statement. Wires to third parties (lender payoffs, banker fees, counsel fees) go first; net proceeds wire to seller goes concurrent or immediately after third-party wires are confirmed.

5

Midday: wire confirmation

Seller's counsel confirms receipt of all wires. Seller notifies key employees, if not already briefed. The transaction is now closed.

6

Post-close day: notifications

Notify key customers, major vendors, and any other counterparties who need to know about the change of ownership per the terms of the purchase agreement and any consent agreements.

Closing Day RiskHow It HappensHow to Prevent
Wire fraudFraudulent wire instructions substituted for legitimate ones via email compromiseConfirm all wire instructions verbally by phone with each recipient's known contact before any wire is initiated
Document sequencing errorDocuments released before all conditions are confirmed; a party gets documents but refuses to wireConfirm all conditions are satisfied before releasing any documents; use an escrow-style release protocol
Funds flow dispute on closing dayA calculation error is identified in the funds flow statement after the wires are initiatedAgree the funds flow statement 5+ business days before close; require both parties' written sign-off before any wire instructions are sent
Last-minute consent failureA required consent is not in hand on the closing dayTrack every consent in a daily log from signing; escalate any consent not received 10 days before close
Pre-close covenant violation identified at closeBuyer raises an ordinary course issue as a closing condition objection on closing dayReview any significant business actions in the pre-close period with counsel before taking them; do not assume ordinary course status without confirmation

Frequently asked questions

What happens if the buyer wants to close but I have a remaining disclosure schedule issue?

A disclosure schedule "bring-down", an update to the schedules for events occurring after signing, is standard practice. If the new disclosure reveals a breach of a rep that did not exist at signing, the buyer has the right to negotiate a purchase price adjustment, add a specific indemnity, or, if the breach is material, potentially refuse to close. Identifying these issues early in the pre-close period gives both parties time to negotiate a resolution before the closing date.

What if the buyer tries to renegotiate the price between signing and closing?

Buyers cannot unilaterally renegotiate after a purchase agreement is signed. They can raise issues with closing conditions (if a condition has not been satisfied), purchase price adjustments (if the working capital or indebtedness has changed from estimates), or specific indemnities for disclosed issues. A buyer who attempts to renegotiate price without a legitimate contractual basis is in breach of the purchase agreement. The seller's recourse is specific performance or damages. Practically, most sellers negotiate rather than litigate, but having counsel who will enforce the agreement is important.

Can the closing be done entirely remotely?

Yes. The vast majority of lower-middle-market closings are now conducted remotely: documents are signed electronically (via DocuSign or similar), originals are couriered where required, and funds are transferred by wire. A "virtual closing" requires careful coordination of document sequencing, documents cannot all be signed simultaneously, as some must be effective before others, and wire instructions must be confirmed verbally before any funds are transferred.

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Research sources

American Bar Association: M&A closing mechanics guideSRS Acquiom: M&A Deal Terms Study 2024Deloitte: M&A Trends Report 2025

Disclaimer: Financial figures and case studies in this article are illustrative, based on representative middle market assumptions, and are not guarantees of outcome. Statistical references are drawn from cited third-party research; individual transaction and operational results vary based on business characteristics, market conditions, and deal structure. This content is for informational purposes only and does not constitute legal, financial, or investment advice. Consult qualified advisors for guidance specific to your situation.

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