You can usually defer claiming your State Pension, although the increase depends on when you reached State Pension age. Under the new State Pension rules, deferring for at least nine weeks normally increases the weekly amount by 1% for every nine weeks, or about 5.8% for a full year. If you reached State Pension age before 6 April 2016, different rules may apply, including a possible lump-sum option after deferring for at least 12 months. Deferring can affect entitlement to some benefits, so check the latest guidance on GOV.UK before deciding.