Can't understand Your bill details. Above said values are items rate or tax rate...? If items then where is tax rate..? If tax rate where is items rate...?
0% -1000 5%-952.38+47.62=1000 12%-892.86+107.14=1000 18%-847.46+152.54=1000 28%-781.25+218.75=1000 loading charge in the bill is 100 total bill value 5100