The effect of an ownership change on a D-U-N-S Number and business credit file comes down to one question: does the same legal entity keep operating after closing? When a buyer purchases the shares or membership interests, the company that built the file usually stays the borrower, history and all. When a new company buys the assets, that buyer generally needs its own D-U-N-S Number, and we found no Dun & Bradstreet or Experian page saying the seller's payment history moves with the assets. We read the IRS, D&B, Experian, UCC and SBA sources on November 2, 2026 to map each deal type to what a buyer's lender will see.
What an ownership change does to your D-U-N-S Number and business credit file
Each bureau files a business under its own identifier: the D-U-N-S Number at Dun & Bradstreet and the BIN at Experian. D&B covers the simplest case on its Get a D-U-N-S Number page (read November 2, 2026): "Your number will never expire or change even if your business closes or is purchased by another company." Its D-U-N-S Profile Manager page tells owners to update their information if the company "changes ownership." So when someone buys the company itself, the number stays and the owners request an update to the record.
Structural changes are less tidy. In a May 2026 thread on D&B's customer community, a D&B employee wrote that a number "typically does not change unless something meaningful about that entity or its structure changes," and listed conversions such as an LLC becoming a corporation and "Mergers, Acquisitions, or Divestitures" among the causes. A forum reply isn't published policy, but it shows why a number can differ. We found no D&B or Experian page saying a seller's payment history transfers to a buyer's new entity, so plan as if a new company starts its own file.
Stock sale, asset purchase or merger: which file the buyer's lender sees
The IRS page When to get a new EIN (last reviewed July 21, 2026) starts with a general rule: "You need a new EIN, in general, when you change your entity's ownership or structure." Its lists get specific:
- Corporations: no new EIN if you "Are the surviving corporation after a corporate merger," and a new EIN if you "Merge and create a new corporation."
- Partnerships: no new EIN if you "Undergo a change in ownership that does not result in the termination of the partnership."
- LLCs: a new EIN if you "Terminate an existing LLC and form a new corporation or partnership."
The corporation list doesn't mention a sale of shares, so confirm the EIN question for your deal with your CPA.
| Deal type | Entity after closing | EIN (IRS page) | D-U-N-S Number | What the buyer's lender will likely see |
|---|---|---|---|---|
| Buy 100% of the shares or membership interests | Same company | Share sale not listed for corporations; partnerships keep theirs unless terminated | Same number; update ownership in Profile Manager | The company's full history, open debts, liens and judgments, plus the new owners' personal credit |
| New company buys the assets | Buyer's new entity; seller's entity still exists | Buyer uses its own EIN | Buyer requests its own number | A new or thin business file, the seller's financials, UCC filings against the seller and the buyer's personal credit |
| Existing company buys the assets | Buyer's existing entity | Buyer's existing EIN | Buyer's existing number | The buyer's own history; the acquired operation's record stays with the seller |
| Merger, buyer survives | Surviving corporation | No new EIN for the survivor | Survivor's number should continue; ask D&B about the other company's record | The survivor's file |
| Merger that creates a new corporation | New corporation | New EIN required | Expect a new or different number; confirm with D&B | Little or no history under the new entity at first |
Which bureaus a lender pulls, and how it weighs them, varies. For SBA 7(a) loans, SOP 50 10 8.1 (effective October 1, 2026) has the lender's credit memo cover "Length of time in business under current management" and the owners' and guarantors' personal credit reports. It treats an asset purchase as a change of ownership when the buyer is purchasing "all or substantially all of the assets of the seller's business and is continuing the operations of the seller's business," and says "the SBA Lender must verify the seller's financial data." Without "a clearly defined continuity of operations," the lender may evaluate the deal as a start-up. For SBA 504 loans, the SOP says "business credit reports are not required."
Worked example: one company bought two ways
Assumptions, all ours and fictional: Harbor Supply Inc. has 11 years of history at D&B and Experian. The price is $900,000. Harbor's bank holds a filed financing statement against Harbor Supply Inc. securing a $140,000 line of credit balance, which Path B pays from the sale proceeds. Closing and every filing happen on Monday, March 1, 2027, and we count weekdays only and ignore holidays.
| Item | Path A: buy 100% of the shares | Path B: NewCo LLC buys the assets |
|---|---|---|
| Borrower on new financing | Harbor Supply Inc. | NewCo LLC |
| D-U-N-S Number | Harbor's existing number; officers update ownership | NewCo requests its own; 30 business days from March 1 is April 12, 2027 |
| Payment history a lender sees | All 11 years, good and bad | None under NewCo yet; Harbor's history stays with Harbor Supply Inc. |
| The $140,000 line | Still Harbor's debt unless paid at closing | Paid at closing, so the seller nets $900,000 minus $140,000, or $760,000, before other costs |
| Seller's bank filing | Stays against the company the buyer now owns | Stays on record until a termination is filed, so the buyer asks for one at closing |
| Experian | Same file; officers update it directly, and a dispute filed March 1 is generally investigated by March 31, 2027 | A separate file for NewCo |
Neither date is a promise, since D&B says "in most cases" and Experian says complex cases may take longer. Path A hands the buyer an established file, which helps when the history is clean and hurts when it isn't. In Path B the lender leans on the seller's financials, the buyer's personal credit and the collateral. Our guide to business acquisition loans covers how lenders size each.
Updating Dun & Bradstreet after a sale or merger
D&B's D-U-N-S Profile Manager is free for "a U.S.-based, non-public commercial organization," and "You must be the company's owner, director, or officer to access" it. You can update details "such as the company's legal name, address, or number of employees," upload financial statements and dispute payment experiences. D&B adds that it "cannot guarantee that requested updates will be accepted or added to the company's business credit file."
For a new entity, the Get a D-U-N-S Number page says "There is no cost to request and receive a D-U-N-S Number" and "In most cases, you should receive your number in no more than 30 business days." With several sites, it says to "apply for a separate D-U-N-S Number for each location." Look up the existing record before requesting a new one, and ask D&B Customer Support if a number changed without explanation, as a D&B employee told one member in that thread.
Updating Experian's business file after an acquisition
Experian's business credit information page says that for "items such as business name, address, industry code, employees, sales and executives," an "authenticated officer of your business can make these changes directly" through BusinessCreditFacts.com. Data disputes go through the report's dispute button or BusinessDisputes@Experian.com, and "Generally an investigation is completed within 30 days, however, complex cases may take longer."
Its small business help page adds that the agent "is only authorized to make changes that are verified by supporting documents" and that "It is always helpful to provide all current and past names and addresses in your dispute." It also says "In some cases, the report will be under a new BIN," and the closing email gives the case number and current BIN, so save it. As our suggestion, have the purchase agreement, the state filing showing current officers or managers, and any certificate of merger or name change ready.
A closing checklist for the buyer's credit file
UCC filings belong in the same review. UCC 9-507(a) says a filed financing statement "remains effective with respect to collateral that is sold" or otherwise disposed of when the security interest continues, "even if the secured party knows of or consents to the disposition." A seller's lender may still have a recorded claim on equipment or inventory you bought, which is why a new lender checks collateral for business loans and lien position.
- Before closing: decide whether the borrower will be the same entity or a new one, pull the target's D&B and Experian reports, run a UCC search under the seller's exact legal name with the state filing office, and get payoff letters for secured debt.
- At closing: collect termination statements for liens being paid off.
- Soon after: update ownership and executives with D&B and Experian, or request a number for the new entity, and keep the confirmation emails.
- Before applying: expect lenders to lean on personal credit while the business file is thin. Our guides to personal vs. business credit for loans and how to build business credit cover the next steps.
After the deal, EQ Funding routes one application to lenders who compete for it, whether you need business term loans, a business line of credit or SBA loans. Each lender sets its own criteria and decides approval and terms.