Reconcile each contribution to its own source and transfer records. A single total does not explain whose money it is or whether it qualifies.
Build a transaction-level schedule
Match the deposit, closing balance and reserves to account records, sale proceeds or financing. Explain joint ownership and any gift documentation where relevant. Preserve the sequence through intermediary accounts instead of jumping from the original asset to the final business payment without the intervening evidence.
Use primary records: insurer proposals and binders, certificates of coverage, premium invoices and payment confirmations, licence and permit applications with fee receipts, inspection correspondence, and vendor quotes for items not yet purchased. On the enterprise side: signed purchase agreement, three years of financial statements and returns, the client management agreements, the payroll register and employment records, any lease or premises documents, licences held, and a business plan where current income needs supplementing to show capacity. The set to assemble is formation documents for each entity in the chain, share registers and certificates, executed transfer agreements, the shareholders' agreement, board minutes recording appointments, citizenship evidence for the individuals at the top, and any convertible instruments or option grants.