Corporate and personal tax filings for the period, payroll journals and slips for any months salary was run, dividend declarations and directors' resolutions, management-fee invoices, bank statements showing the transfers, and the minute book. Together they show what was paid, by whom, and on what basis.
Explain the pattern rather than tidy it
Closely held companies change their compensation mix for tax and cash-flow reasons, sometimes part-way through a year. Set out what happened and why, month by month if necessary, instead of presenting a smoothed summary the filings will not support. Where a management fee went to a separate personal company, identify that company and its relationship to the employer.
Any decision about amending a past filing belongs with an accountant, not with the immigration file. Ask the accountant for the underlying filings rather than a summary letter, and read them against the period being relied on. The records that matter are corporate and personal tax filings, payroll journals and slips for any months salary ran, dividend declarations, directors' resolutions, management-fee invoices, bank statements showing the transfers, and the minute book.
Where a management fee went to a separate personal company, identify that company, its ownership, and its relationship to the employer, because an unexplained third entity in the payment chain is precisely the detail that generates a request for evidence. Any decision about amending a past filing belongs with the accountant and should be made for accounting reasons rather than for the immigration file.