The Don’s Diligence
Protocol
A debt portfolio is more than a spreadsheet. Before committing funds, review the ownership record, account documentation, data, exclusions, legal constraints, servicing plan, economics, and purchase protections.
What should you check before buying a debt portfolio?
Verify who owns the accounts, whether the data and supporting media match the sale schedule, what legal or operational exclusions apply, what servicing will cost, and what the purchase agreement actually promises.
Portfolio due diligence is transaction-specific. This framework is educational and does not replace advice from qualified legal, compliance, accounting, or servicing professionals.

Seven checks before you commit.
Use the sequence as a working framework. The documents, legal requirements, and required controls vary by asset class, account facts, jurisdiction, and transaction.
- 01Ownership
Trace the chain of title
Confirm the seller’s authority and map each transfer from the original creditor or prior owner to the proposed seller. Make sure the relevant account pool, schedule, or exhibit can be reconciled to every bill of sale and assignment. Review name changes, mergers, missing records, and any limitations with counsel.
- Match the portfolio schedule to the transfer documents.
- Identify gaps, ambiguous exhibits, or entity-name changes.
- Confirm transfer restrictions and the seller’s authority to transact.
- 02Media
Test account-level documentation
Ask what evidence exists for the specific asset type and what the seller can deliver. For consumer credit, that can include applications or agreements, account statements, charge-off balances, and payment history. Electronic records should be explainable and tied to the account schedule.
- Review sample files and document availability rates before relying on summaries.
- Reconcile charge-off information and payment history to the data tape.
- Clarify how missing, incomplete, disputed, or mismatched media is treated.
- 03Data quality
Reconcile the tape to source records
Check balances, dates, status codes, prior payments, account counts, duplicates, field definitions, and the source of each data element. Validate sample rows against supporting records and document any exclusions or assumptions used in the valuation.
- 04Exclusions
Review legal status and account flags
Identify bankruptcy, deceased, dispute, identity-theft, active-duty military, settlement, fraud, and other ineligible-account indicators. Assess statute-of-limitations and state-specific issues account by account where required. Confirm screening, treatment, pricing adjustments, and post-close controls with qualified counsel and compliance staff.
A flag is a trigger for review, not a legal conclusion. Requirements and protections depend on the facts and applicable law.
- 05Servicing & compliance
Map who will operate the accounts
Confirm the intended servicer’s authority, systems, controls, complaint and dispute handling, data protection, recordkeeping, and jurisdictional requirements. Clarify which party handles consumer communications, furnishing, litigation decisions, and required notices.
- 06Economics
Model net outcomes, not face value
Evaluate payment and recovery history, portfolio age, balance distribution, geography, documentation, legal status, servicing, legal, data, and compliance costs, plus timing and uncertainty. Stress-test assumptions. Historical or modeled results do not guarantee future performance.
- 07Contract
Define representations and remedies
Review the purchase agreement, schedules, transfer instruments, seller representations, warranties, notice periods, dispute process, post-close cooperation, and any repurchase or put-back remedy. Define eligible defects and timelines in the contract; no universal return period applies to every transaction.
Check the rules that fit the asset.
These public references support independent review. They are not an exhaustive legal checklist and do not replace transaction-specific counsel.
Due diligence, plainly stated
A short reference for debt experts and buyers reviewing charged-off debt portfolios, and sellers preparing a debt portfolio sale.
What is debt portfolio due diligence?
It is the review of ownership, account documentation, balances and payment history, exclusions, legal status, data quality, servicing, compliance, transaction costs, and expected recoveries before a buyer commits funds.
What does chain of title mean in debt buying?
Chain of title is the documented transfer history showing how ownership moved from the original creditor or prior owner to the current seller. Buyers should verify that the accounts in the proposed sale are identified in the relevant schedules and transfer records.
What is media availability?
Media availability describes whether the seller can produce relevant account records—such as agreements, statements, payment history, charge-off details, and electronic records—subject to the asset type, transfer terms, and applicable law.
Can a buyer return defective accounts after closing?
Only if the transaction documents provide an applicable remedy and the buyer meets the agreed eligibility, evidence, notice, and timing requirements. Repurchase or put-back terms should be negotiated for the specific transaction; no universal 90-day period applies.
The protocol starts before the data room.
For buyer qualification, seller preparation, or a transaction-specific diligence discussion, contact the desk. Do not send account-level consumer data by email.
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