A TikTok user's viral story about accidentally receiving $8.7 million from Fidelity Investments has sparked widespread debate about financial ethics and legal obligations. The woman, who goes by @shawnainchapterland, immediately reported the mistaken deposit to the brokerage firm, later calling it her "biggest regret" in a social media post.

While the prospect of suddenly having millions in your account might seem like a windfall, financial experts warn that keeping such funds could lead to serious legal trouble. Under the legal doctrine of unjust enrichment, recipients must return money sent in error, regardless of whether they caused the mistake or initially realized something was wrong.

Financial institutions have multiple methods to recover mistaken deposits depending on how the money was transferred. For ACH transfers, a formal refund process exists for correcting federal payment errors. Wire transfers fall under Uniform Commercial Code Article 4A, giving senders the right to recover funds. Brokerage firms like Fidelity can also correct errors and pursue restitution claims through their own recovery procedures.