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system
if i were to get audited, what would i need?
user
while ianal (tax or otherwise), i have always found that keeping original receipts is the only way to go. while anything can, at some level, be forged or faked, a photo is one more step removed from the original.  a mere listing on a web site isn't much proof of anything. keep your originals for a suggested seven years; while the irs is trying to audit much faster than that, and any inkling of fraud can be investigated at any time, you should be well and clear with originals kept that long.
assistant