Full list of delayed retirement dates for pensioners as state pension age rises to 67

The gradual increase of the state pension age from 66 to 67 has begun, and pensioners born between certain dates will have to wait longer to start claiming their payments. Concerns have been raised about the financial gap faced by many older Brits, and many will have to delay their retirement to avoid being without income for weeks or even months. Men and women will be affected equally and will be determined by their exact date of birth.

People born just one day apart could have a month's difference in when they can start claiming their state pension under these new rules. Tom Selby, director of public policy at AJ Bell, said the new change is a "recipe for confusion" and said that many older Britons will "inevitably be completely unaware that this is happening and have to plug an income gap, albeit potentially only for a few months, as a result". Starting this month, all workers born after April 6, 1960, will be affected by the increased age. However, those born on or before April 5, 1960, are now able to claim their state pension if they are eligible.

Older working Brits will have to check which window their date of birth falls into, and which exact pension age it corresponds with. They will then have to plan when they retire around that.

Here are the new state pension ages with their corresponding dates of birth:

• 66 years and 1 month: Brits born between April 6, 1960 and May 5, 1960
• 66 years and 2 months: Brits born between May 6, 1960 and June 5, 1960
• 66 years and 3 months: Brits born between June 6, 1960 and July 5, 1960
• 66 years and 4 months: Brits born between July 6, 1960 and August 5, 1960
• 66 years and 5 months: Brits born between August 6, 1960 and September 5, 1960
• 66 years and 6 months: Brits born between September 6, 1960 and October 5, 1960
• 66 years and 7 months: Brirs born between October 6, 1960 and November 5, 1960
• 66 years and 8 months: Brits born between November 6, 1960 and December 5, 1960
• 66 years and 9 months: Brits born between December 6, 1960 and January 5, 1961
• 66 years and 10 months: Brits born between January 6, 1961 and February 5, 1961
• 66 years and 11 months: Brits born between February 6, 1961 and March 5, 1961
• 67 years: Brits born on or after March 6, 1961

Under current legislation, a further increase in the state pension age to 68 is due to take place between 2044 and 2046. However, there has been speculation that this could be brought forward.

Any such changes will have to come with ten years' notice to give working Brits ample time to prepare for retirement. Reports say that the changes currently underway are expected to save the Treasury as much as £10bn per year by the end of the decade.

The decision was made to reflect longer life expectancy, with many younger people anticipating working into their 70s. "The state pension age is rising for three reasons: improved life expectancy, to support the sustainability of the public finances and improving intergenerational fairness," said Zoe Alexander, executive director of policy and advocacy at Pensions UK.