Tax break for married couples 'within six months': Cameron ready to defy Osborne and Clegg to force policy through Prime Minister wants to recognise marriage in the tax system Both George Osborne and Nick Clegg are against the idea Allowing stay-at-home spouse to transfer allowance save £150-a-year David Cameron, pictured today, is determined to push the policy through David Cameron could publish plans to introduce a tax break for married couples as early as November, according to senior Downing Street sources. The Prime Minister yesterday confirmed that he would definitely recognise marriage in the tax system before the general election in 2015. And a senior figure insisted Mr Cameron is prepared to overrule Chancellor George Osborne, who has repeatedly blocked the early introduction of the measure as many Tory MPs would like. "The Prime Minister is the First Lord of the Treasury," the senior figure said, pointing out that Mr Cameron is in ultimate charge of tax measures. A No 10 official said the measure would be introduced in either an autumn statement or a budget, meaning the pledge could be fulfilled when the Chancellor makes his next announcement in November. A pledge to recognise marriage in the tax system was included in the Coalition agreement three years ago but Mr Osborne has refused to include it in any of his budgets or autumn statements since. Mr Cameron was asked during a local election campaign drive in Carlisle yesterday if he still intends to go ahead with his plans for the measure. He said: "Yes I do, we set them out at the last election in the Conservative manifesto. 'The Coalition agreement specifically said that while the Liberal Democrats don't agree with them they would abstain if we promoted them and that's exactly what we'll do before the end of this Parliament. Asked if it will be this year he added: "It will be before the end of this Parliament." Chancellor George Osborne and Deputy PM Nick Clegg are both thought to be against using the tax system to recognise marriage But the ConservativeHome website reported yesterday that "on tax breaks for marriage, there are signals that the policy will be implemented, perhaps as early as the autumn." Tory MPs and Cabinet ministers including Iain Duncan Smith have urged Mr Cameron to introduce the measure no later than this year in order to reinforce the Government's pledge to be the most family friendly ever, rather than leaving it until 2015. Many believe it would placate Tory voters offended by the introduction of gay marriage, and stay-at-home mothers who will not benefit from new state support with childcare bills. The decision to float the idea again now will be seen as an attempt to appeal to traditional voters ahead of the local elections on Thursday. The Tories are expected to lose 300 or more council seats, placing further strain on Mr Cameron's relations with his party. Eligible couples could be up to £150 better off from a tax break for people who tie the knot but one person does not work The Prime Minister has a problem because when the 35 English councils up for grabs were last fought over in 2009, it marked a high watermark for Tory fortunes and the party won 30 councils outright, picking up 1,531 seats. This time, Labour is widely predicted to gain several hundred seats, while the Lib Dems will join the Tories in losing seats. The exact details of the marriage tax plan have not been spelt out but it is assumed that the tax change would mirror plans unveiled by the Tories before the 2010 general election. The Conservative manifesto proposed a transferable tax allowance that would apply to all married couples - and gay couples in civil partnerships - who pay the basic rate of income tax. Spouses not using all of their tax-free personal allowance, either because they stay at home or work part-time and earn less than the threshold for basic rate income tax, were to be able to transfer £750 of their benefit to their working partner. Eligible couples where one partner is not using all the tax-free personal allowance and the other earns up to £44,000 would be up to £150 a year better off.