When a proprietor is required to pay tax on samples under Sec. 19.434(f), the proprietor may include the tax on the next semimonthly or quarterly tax return, as appropriate, if qualified to defer payment of tax. If a proprietor is not qualified to defer payment of tax, the proprietor must prepay the tax on form TTB F 5000.24. See subpart I of this part for rules regarding the payment of taxes. (26 U.S.C. 5005, 5061)