The State Pension age is the earliest you can claim your State Pension. Your State Pension age depends on when you were born.
For people reaching State Pension age now, it will be age 66 for women and men. Only those born prior to 6th October 1954 will have been able to claim at age 65. The State Pension age is set to increase from age 66 to age 67 between April 2026 and April 2028.
You can check your State Pension age here: https://www.gov.uk/state-pension-age
If you don’t claim your State Pension in the year you reach State Pension Age, it will be increased when you do take it. For each year you delay, it increases by almost 5.8%.