Documenting tax deductible expenses is important in case of an IRS audit, as the IRS requires adequate records to support each deduction. Photographing receipts with a smartphone provides documentation that can be uploaded and stored in the cloud. This ensures the documentation is not lost and can be accessed if needed for an audit years later. Apps are also available to easily track mileage for vehicle deductions. Taking pictures of odometer readings with date and purpose can document business vehicle usage stored in cloud folders. Proper documentation is key to claiming deductions and avoiding disallowed amounts.