Documenting Cash Expenses for Tax Write-Offs

[Jack Connolly]

If I opened a separate Chase bank account that is strictly for deposits and expenses related to my single investment property, for tax write-off purposes how do I document cash expenditures to a contractor doing repairs? Since I'm not writing the contractor a check nor getting a receipt for the work being performed how would I be able to prove what that cash was used for come tax season? Curious as to how I should keep records of this withdrawal from the account. Any insight or advice would be greatly appreciated! Thanks.