For earnings, employment contracts, payslips and tax records; for a property sale, the sale contract, completion statement and receipt of proceeds; for business income, corporate accounts and distribution resolutions. Then add account statements and wire confirmations covering every step between origin and the enterprise, plus certified translations where the originals are not in English.
Order the records the way the money moved
Number the exhibits in transaction order so a reader can follow the funds without cross-referencing. Where one statement covers several unrelated movements, highlight the relevant lines instead of submitting hundreds of pages unmarked. Request archived statements from banks early, since older periods can take weeks to retrieve and some are unavailable.
If a document contradicts the narrative, change the narrative rather than omitting the document. Add a short covering note at the front of the exhibits that states, in plain sentences, what the file is asserting. One paragraph per source: where the money came from, how it was earned, when it moved, and which exhibits show each step.
A reader who knows what they are looking for reads the exhibits differently from one who is working it out as they go. Hypothetical example: an investor's funding pack opens with four short paragraphs covering salary, a property sale, business distributions and one transfer between the investor's own accounts, and every exhibit number appears in that opening page, so the folder can be checked against a claim rather than merely searched.