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Executive summary. A transaction can be commercially agreed and still miss a tax notice, license filing or allocation schedule. This calendar turns the last ninety days into named decisions, evidence and owners. It is educational; Illinois counsel and tax advisers should tailor it to the deal.
Editorial standard. This guide was researched from the primary sources listed below and last checked on July 19, 2026. It is educational, not legal, tax, accounting, licensing or lending advice. Examples are explicitly illustrative unless identified as sourced data.

Start with structure and responsibility

At the start of the calendar, document the buyer, seller, legal entities, transaction structure, assets or equity transferred, real estate treatment, intended closing date and every adviser. Assign a responsible person and backup for tax, legal, lending, licensing, insurance, payroll, employee communication and digital assets. A checklist without ownership is only a list.

The 90-day calendar

TimingPrimary workEvidence to retain
Days -90 to -61Confirm structure; open data room; identify regulated services; validate broker/adviser roles; begin financial reconciliation; identify material contracts and liens.Structure memo, adviser list, license register, request list, source reconciliation and contract index.
Days -60 to -31Draft purchase agreement and disclosure schedules; obtain lender requirements; build tax-allocation framework; request license/permit guidance; plan employee and customer communications.Draft schedules, lender checklist, agency correspondence, transition plan and unresolved-issues log.
Days -30 to -11Finalize financing and insurance; prepare Illinois bulk-sale package if applicable; verify payoff letters and UCC releases; test digital and operational handoff; update financials.Signed or near-final agreement, financing agreement, payoff evidence, insurance binders, updated license register and closing checklist.
At least 10 business days before applicable asset transferBuyer/transferee files Illinois Form CBS-1 with the sales contract and financing agreement when the transaction is a covered bulk sale.Submitted form, attachments, delivery confirmation and IDOR correspondence.
Days -10 to closingResolve closing conditions; confirm funds flow; approve communications; verify day-one authority, payroll, dispatch, banking and access.Closing-condition certificate, final funds flow, credential lookups, access register and signed employment/transition documents.
Closing through day +30Deliver assets and credentials; preserve records; submit post-close filings; update tax and registration accounts; reconcile working capital and allocation reporting.Closing binder, delivery receipt, final allocation, post-close filing log and working-capital calculation.

Illinois bulk-sale notice: do not leave it to the final week

IDOR describes Form CBS-1 as a notice of sale, purchase or transfer of business assets and states that the purchaser or transferee must file for a covered bulk sale. The current instructions require filing at least ten business days before the transfer and call for the sales contract and financing agreement. Late filing can expose the purchaser to personal liability for seller amounts owed to IDOR, limited as described in the instructions. If terms change, the instructions call for an updated submission.

Calendar by business days, not calendar days. Determine applicability and prepare the package early with counsel. This guide does not decide whether a particular transaction is a covered bulk sale.

Business-broker registration

The Illinois Secretary of State says the Business Brokers Act requires covered persons to register unless an exemption applies, requires annual renewal, and provides a registration search. Before relying on “licensed broker” language, identify the actual person and firm, confirm current registration or exemption, and retain the engagement and required disclosures.

Purchase-price allocation

For an applicable asset acquisition, buyer and seller should coordinate the allocation before filing. IRS Form 8594 addresses allocation among asset classes. The commercial schedule, closing statement, tax workpapers and each party's filing should use consistent inputs unless advisers document a reason otherwise. Goodwill, customer-based intangibles, equipment, inventory, covenants and real property can have different tax consequences; the broker should not substitute for tax advice.

Licenses, permits and responsible people

Use the separate contractor-license continuity matrix to determine which credentials attach to an individual, entity or municipality. Translate open items into closing conditions. Do not announce uninterrupted service until the team can pass the day-one dispatch test.

The closing binder index

  • Executed purchase agreement and every schedule or amendment.
  • Entity authority, good-standing and signing resolutions.
  • Funds flow, payoff letters, lien releases and escrow instructions.
  • CBS-1 submission and IDOR correspondence if applicable.
  • Allocation schedule and Form 8594 workpapers if applicable.
  • Assignments, consents, leases, titles and bills of sale.
  • License, insurance, bond and permit evidence.
  • Employee, customer, vendor and digital-transition materials.
  • Post-closing obligations, owners and deadlines.

A simple control that prevents missed obligations

Maintain one live closing tracker with item, authority or agreement, applicability decision, owner, due date, dependency, status, evidence link and reviewer. Mark an item complete only when the evidence is stored. Oral assurances and calendar reminders are not closing evidence.

Assign a closing control owner

The deal lead should maintain the integrated calendar, but each decision belongs to the qualified party: counsel for agreement, notices and legal filings; tax adviser for allocation and returns; lender for financing; regulator for authority; insurance professional for coverage; and company owners for operational delivery. Record “not applicable” only with the person and reasoning that support it.

CBS-1 control example

If counsel concludes the asset transfer is covered, enter the expected transfer date, count backward at least ten business days, and create an internal deadline earlier than the statutory timing. Confirm the final sales contract and financing agreement are available, the form uses the current revision, delivery is documented, and any changed terms trigger review of an updated submission. Store IDOR correspondence in the closing binder and track the bulk-sales release process.

Funds-flow and lien controls

The funds-flow statement should identify payer, recipient, amount, bank/wire verification, purpose and supporting closing document. Independently verify changed wire instructions. Reconcile payoff letters to debt and lien searches, then track release filings after closing. Do not assume paying a lender automatically clears every UCC filing, vehicle lien or equipment lease.

Employee and communication sequencing

Before communications, determine employing entity, payroll cutoff, accrued compensation/PTO treatment, benefit transition, workers compensation, offer letters, retention terms and required notices with counsel. Coordinate customer and vendor announcements with assignment/consent requirements. Seller confidentiality does not justify an unplanned day-one payroll or insurance gap.

Closing-day command center

  • One approved closing checklist and funds flow.
  • Named authority to release signatures and wires.
  • Credential and insurance evidence refreshed that morning.
  • Buyer bank, payroll, dispatch, phone and payment routing tested.
  • Communication owner and approved message for employees, customers and vendors.
  • Defect log for items that move to post-close covenants.

Post-close thirty-day reconciliation

Verify tax and entity accounts, titles, assignments, credential records, insurance, digital administrators, payroll, merchant deposits and customer communications. Complete working-capital and purchase-price calculations under the agreement. Confirm the allocation and adviser filings use the final transaction numbers. Archive final evidence separately from working drafts and carry unresolved obligations into a dated post-close tracker.

Use the working tools

Download the editable or printable companion materials referenced in this guide.

Download the seller preparation checklist

Primary sources and review notes

  1. Illinois Department of Revenue - CBS-1 Instructions — Covered bulk-sale notice, timing, attachments and consequence of late filing.
  2. Illinois Secretary of State - Business Brokers — Registration, annual renewal and official search.
  3. IRS - Instructions for Form 8594 — Federal asset-acquisition allocation reporting.
Before relying on this page: confirm current rules and deal-specific facts with the issuing agency and qualified advisers. If a source and this summary conflict, follow the source.

Apply the framework to an actual transaction

Share the trade, geography and stage of the deal. The first conversation is confidential and introductory.

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