A letter can explain intent and terms, while bank and other source records establish different facts. The applicable evidence should support lawful origin, ownership and transfer path. A received balance does not necessarily explain how the donor obtained the funds or what happened through intermediary accounts.
Connect the narrative to the records
List the relevant transfers and identify the supporting documents without concealing genuine complexity. If the payment is actually a loan, explain that arrangement and assess its treatment. Avoid replacing a complicated but lawful history with a simpler fictional gift story.
Formation and ownership records for the business, several years of financial statements and tax returns, a current inventory valuation, payroll registers and an employee list, the lease, supplier agreements, and a draft purchase agreement allocating the price across asset categories. Signed client agreements or engagement letters, issued invoices and payments received, a business bank account in the company's name, registration and any required licence, insurance certificates, a lease or coworking agreement, and supplier or subcontractor contracts. Federal and state tax returns for three years, monthly booking and revenue records, guide payroll, boat titles and trailer registrations, the dock lease, the state outfitter licence and every permit, each with written confirmation of whether it transfers to a new owner.