Following the movement of money is one of the most consequential skills in forensic accounting. Whether a divorce proceeding, an embezzlement investigation, a bankruptcy filing, or a criminal fraud case, the ability to trace funds from their origin to their ultimate destination often determines the outcome for clients, courts, and victims alike.
Financial tracing is the process of following money through paper and digital trails, be they bank and brokerage statements, tax returns, deeds, mortgages, accounting records, cryptocurrency wallets and fintech platforms. It supports a wide range of investigative goals, including:
- Distinguishing legitimate income from illicit proceeds
- Identifying assets acquired with illicit funds
- Locating undisclosed assets purchased with marital or business funds
- Separating non-marital from marital resources in a divorce
- Corroborating witness testimony and key events
- Quantifying illicit proceeds and fraud damages
- Supporting sentencing, restitution, and defense strategies
Because every engagement presents its own facts, there is no single standardized methodology. Practitioners must exercise professional judgment, adapting recognized frameworks to the case at hand while remaining ready to defend their choice of method under cross-examination.
The Legal Landscape for Tracing Engagements
Financial tracing surfaces across both criminal and civil matters. The objectives, and the standards that courts apply, shift depending on the context.
Criminal Contexts
- White-collar crime: quantifying stolen funds and tracking their use to support asset forfeiture and sentencing in schemes such as embezzlement, financial statement fraud, Ponzi schemes, health care fraud, insider trading, and loan fraud.
- Money laundering: connecting individuals, entities, and accounts used to disguise the origin of criminal proceeds.
- Asset forfeiture and seizure: distinguishing legitimate from illicit proceeds so that seized property can be allocated to victims or law enforcement programs.
- Restitution: quantifying the financial loss that anchors a court-ordered repayment to victims.
Civil Contexts
- Matrimonial disputes: separating marital from non-marital assets, apportioning commingled account balances, and uncovering undisclosed income or hidden assets.
- Estates and trusts: quantifying misappropriated funds by a trustee and allocating commingled non-marital and marital contributions among beneficiaries.
- Bankruptcy: detecting fraudulent transfers, hidden assets, and preferential payments made to creditors ahead of a filing.
- Fraud and unjust enrichment: establishing the circumstances behind a business loss or personal gain, on both the plaintiff’s and defendant’s side.
Because many disputes involving tracing settle before trial, and because state courts do not always follow the same reasoning as federal courts, your experts need to understand early which precedents and standards will govern the engagement.
Sources of Information
The specific facts of a case, how funds were extracted, concealed, or converted, will determine which records will matter most. Commonly used sources include:
- Financial account statements: bank, brokerage, and retirement accounts, often the primary evidence for tracing the flow of funds
- Real estate records: deeds, mortgages, and property tax filings
- Vehicle and collectibles registrations: vehicles, boats, aircraft, art, and other high-value items
- Mortgage and loan documents
- Credit card statements: these can reveal undisclosed spending
- Business filings: these can expose undisclosed ownership interests
- Tax returns and corporate financial statements: these can reveal undisclosed rental income, royalties, or dividends
- Fintech and digital-wallet records: these require specialized tools to trace blockchain transactions
- Social media and other online activity: these can reveal spending inconsistent with reported income
- Interviews: including former spouses, business partners, accountants, and others familiar with the subject
Core Tracing Methods
Financial tracing methods generally fall into two categories: the direct method, used when original records are available, and a set of indirect methods, used to reconstruct financial activity when direct evidence is incomplete.
The Direct Method: The direct method relies on a detailed review of original financial to establish a clear, verifiable link between funds and their source or use. It is most effective when records are intact and available through cooperation, document requests, or subpoena.
Indirect Methods: When books and records are inadequate, falsified, or missing, practitioners turn to indirect methods that reconstruct income by comparing known resources against known sources of funds. Three methods are most common: the net worth method, the cash expenditures method, and the bank deposit method.
Net Worth Method: This method demonstrates that a person’s assets, liabilities, and expenditures during a period exceed their known, legitimate income. It requires establishing an opening net worth with reasonable certainty, identifying a plausible source for any unexplained increase, and rebutting any innocent explanation the subject offers.
Cash Expenditures Method: Sometimes called the sources-and-uses method, this approach applies the same underlying logic as the net worth method but focuses on a cash-flow or income statement rather than a balance sheet — tracking spending on consumable goods rather than the acquisition of durable assets.
Bank Deposit Method: This method assumes that funds collected from any source — legitimate or not — eventually pass through a financial institution. It works best when accounts hold or accumulate cash and there are few large capital transactions. Courts have accepted this method to establish unreported income.
Untangling Commingled Accounts
A persistent challenge in tracing work is the commingled account — one that combines funds from multiple sources, whether tainted and untainted money in a criminal matter or separate and marital funds in a divorce. Several accepted approaches help allocate the resulting balances.
First-In-First-Out and Last-In-First-Out: Borrowed from inventory accounting, first-in-first-out assumes the earliest deposits are spent first. Last-in-first-out assumes the most recent deposit is spent first. Both can track the sequence of deposits and withdrawals in a commingled account, but both become complex and time-consuming with large datasets, particularly where a brokerage account requires accounting for appreciation, depreciation, interest, or dividends.
Lowest Intermediate Balance: The Lowest Intermediate Balance identifies the lowest balance in a commingled account between the deposit of illicit or non-marital funds and their eventual withdrawal. It presumes that legitimate funds are withdrawn first, so any withdrawal that pushes the balance below the original legitimate amount is presumed to consist of unlawful or separate funds. The Lowest Intermediate Balance is frequently applied to trust accounts, bankruptcy proceedings, money laundering investigations, and forfeiture actions.
Proportionality Approach: This approach allocates a commingled balance according to the relative percentage each source contributed, rather than assuming a strict order of withdrawal. It is simpler to apply than FIFO, LIFO, or LIBR across large datasets or multiple accounts, and it is commonly used in estate and trust disputes, divorce settlements, and pooled investment accounts — such as an investment club where members’ proportional ownership shifts as elective withdrawals occur.
What should I do?
Hire an expert (like us). Financial tracing sits at the intersection of accounting rigor and legal strategy. Because no single method applies to every case, the practitioner’s judgment is what ultimately makes an analysis credible and defensible. Approached systematically and documented transparently, financial tracing remains one of the most powerful tools available for uncovering how money really moved, and where it ended up.