The IRS in its Passive Activity Loss Audit Technique Guide published a sample Activity Log. Page 4-16. [The copy/paste here is not the best. But you get the idea, and, hey, it's the IRS own format!]
Date | Hours Spent | Description of Service Performed. Be as specific as possible. By each service, enter H or W for husband or wife. | If requested, how could activity be verified? |
Exhibit 4.4: Activity Log Business/Property:__________________ Year:____________ Complete the following by day:
________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________
Under penalties of perjury, I declare that I have examined the information contained on this worksheet, including attached worksheets and statements, and to the best of my knowledge and belief, it is true, correct and complete.
__________________________________ ___________________ Signatures (both spouses, if married) Date
Reg. § 1.469-5T(f)(4) provides that reasonable means for proving hours may include a statement of services performed AND approximate hours based on appointment books, calendars, etc. To meet his burden of proof under IRC 7491, the taxpayer must comply with the recordkeeping requirements of the regulations.