Prime Minister David Cameron took to Twitter to highlight the increase in the personal tax allowance. He wrote:
Mr Cameron also included a link to a new Conservative poster outlining the change with the headline "Help for Hardworking People".
Labour launched its own poster - with the tag "Who Wants to Bung a Millionaire? Dave Does" - setting out claims that high earners are benefiting while millions are worse off under coalition reforms.
Today, 13,000 millionaires got an average tax cut of £100,000. RT to share poster launched today http://t.co/vhVmj7bKa0
More top news
A report out tomorrow shows energy bills are 5% higher than they should be costing Brits as much as £1.2 billion a year.
Caroline Wozniacki has sparked a sexism row at Wimbledon after saying women do not feature enough on the major courts.
Ten years on, five things that have changed in the fight against terrorism since 7/7.