As discussed with K.Nucharee, we were informed that this sale promotion is set up for the purpose of attracting customers and boosting number of customers for TPIS which ultimately leads to an increased in revenue thereof. Provided that TPIS could prove this particular point to the Revenue Department, the postal expenses should be considered as expenses related to the business of TPIS and thus is deductible for corporate income tax purpose.
In proving this, TPIS should have a marketing plan with the insurance company which states obligation of each party e.g. insurance company shall absorb the cost of the cash coupon while TPIS is obliged to deliver the cash coupon to the insured and absorb cost incurred