Sefton Central Labour MP Bill Esterson said the Tory-Lib Dem government has hit pensioners to give millionaires a tax boost.
Big earners were the big winners in the budget as the 50p tax rate for high earners was slashed.
But while looking after the wealthy, the Tory-Lib Dem government turned on the country's pensioners with the introduction of a £3bn 'granny tax'.
Sefton Central Labour MP Bill Esterson the Tories and Lib Dems were again targeting the poor to help the rich.
Bill said: "The Tory-Lib Dem government is hitting the poor for the benefit of the country's wealthy.
"George Osborne's 'granny tax' is nothing short of a £3bn tax raid on pensioners over the next four years.
"The freeze in the personal allowance for pensioners will see 4.5 million older people who pay income tax losing an average of £75 per year from next April. And people who turn 65 next year will lose out by £315.
"This is a lot of money for pensioners at a time when the cost of living is rising, particularly as household fuel bills rocket."
Bill said the budget was a betrayal of ordinary families right here in Sefton Central.
Bill said: "The devil is in the detail of this budget. And those details reveal that people right here in Sefton will be a lot worse off because of the measures introduced by the Tories and Lib Dems in government.
"They should have cut VAT which would have shaved 3p off a litre of fuel and given pensioners, hard working families and small businesses a much needed boost. Instead the Tories and Lib Dems chose to give millionaires and extra £40,000 a year.
"It just shows that the Lib Dems' priority is to help the richest 1% of the population while hurting those on middle and low incomes.
"Thousands of people here in Sefton will pay more while millionaires pay less.
"This is a very damaging budget for ordinary people here in Sefton. Ordinary families who will be struggling even further to make ends meet.
"And pensioners don't escape either.
"This Tory-Lib Dem government has shown its true colours. They are stealing from the poor to give to the rich."