How to calculate KEB bills?

►Karnataka electricity board single slaps for the domestic LT supply such as for 0 to 30 units the per-unit cost will be ₹ 3.75/-, from 31 to 100 the per-unit cost will be ₹ 5.20, from 101 to 200, the per-unit cost will be ₹ 6.75 and above 201 units you have to pay ₹ 7.8 per unit.

►Additionally, the consumer will pay fixed charges as ₹ 60/- and electricity tax of 5% extra.

►Lets assume a normal household consumes 1000 watt per hour in a day for 30days/1 month. so for 30 days its = 1000 Watts x 24 Hrs x 30 Days = 720000 watts/hour. If 1 unit = 5 Rs = 720 x 5=3600 Rs