Sales taxes could be tracked by credit-card companies, which could provide a year-end report of total sales taxes paid, for use in computing federal income tax

Sales taxes could be tracked by credit-card companies, which could provide a year-end report of total sales taxes paid, for use in computing federal income tax liability. (Sales taxes were deductible this year, but there's always the question whether Congress will renew the deduction or better yet make it permanent.) I've suggested this to AmEx, but have never gotten a response.