But in tax disputes, having good records and documentation can make all the difference.

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Foti's exhaustive list of demands for documents include all of UBS' electronic and paper communications files relating to Sedona stock, its trading records, monthly stock inventories, stock loan documentation, information regarding commission payments, customer account records and research done in house related to Sedona.

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As a rule, keep your tax records and supporting documentation for three years.

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Most documentation which survives from medieval times are legal and governmental records, financial accounts and property deeds.

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Those affidavits in turn required voluminous, intrusive supporting documentation: bank records, tax returns, life-insurance policies and more.

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Ample proof must be offered to convince a judge of such significant expenses, many lawyers said, including detailed records of past payments, documentation of death threats, and even expert testimony regarding the appropriate standard of living.

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