5.8% Guaranteed, Inflation-Protected. That Doesn't Exist Anywhere Else.
Let's price what deferral actually buys you. A 65-year-old man in the UK can currently buy a level annuity paying around 7.0% of his capital. But that's level — fixed in nominal terms, eaten by inflation year after year. An RPI-linked annuity pays closer to 4.0-4.5%. By the time CPI has compounded at even 2.5% for a decade, the real purchasing power of a level annuity has shrunk by 22%.
The State Pension deferral uplift is different. It applies to the base rate at the time you claim — meaning every triple-lock increase compounds underneath it. If the base rate rises by 2.5% annually during your four-year deferral, you're not just getting 23.1% on the original £241.30. You're getting it on the increased rate after four years of triple-lock uplifts. Roughly: £241.30 × (1.025)⁴ × 1.231 = about £314 per week by the time you start claiming.