Sunita Somvanshi
Every April, the UK State Pension rises. The amount it rises by is decided by a formula called the Triple Lock. It sounds simple — and the basic principle is — but the numbers attached to it have put it at the centre of a heated spending debate.
The Triple Lock works like this: the basic and new State Pension increases each April by whichever of three figures is highest — average earnings growth, Consumer Price Index inflation from the previous September, or a minimum floor of 2.5%. The policy was introduced in 2010.
For April 2026, earnings growth was the highest of the three measures, and the pension rose by 4.8%. That affected more than 12 million pensioners. The full new State Pension went up by as much as £575 a year.
The UK government has committed to keeping the Triple Lock in place for the full term of the current Parliament. So it is not going anywhere immediately. But the policy remains the subject of debate over its long-term fiscal cost.
The Government Actuary’s projections give a specific picture of where the formula leads. Under its principal projection, 2.5% is the highest of the three components in 2028, 2029 and 2030, so it would determine the annual increase in those years.
The same projections estimate that switching from the Triple Lock to a simple earnings-linked increase from April 2026 onwards would leave the relevant pension fund balance approximately £2 billion higher by the end of the projection period.
Lord Jim O’Neill, a former Commercial Secretary to the Treasury, has urged the government to tackle the triple lock and welfare spending amid concerns about the UK’s public finances and borrowing costs. The pressure on UK public finances comes from multiple directions in 2026 — the UK wildfire and drought crisis has added further strain to an already stretched budget.
The government has itself acknowledged that maintaining the Triple Lock is expected to increase State Pension spending by more than £30 billion over the current Parliament.
Andy Burnham has said he will retain the Triple Lock, while the policy has continued to face criticism from figures including Lord Jim O’Neill.
The policy debate concerns how State Pension uprating is calculated and how its cost interacts with other public spending. The Government Actuary’s report is the clearest public document for understanding the mechanics because it separates current policy from long-term projections under different assumptions.
What is not in dispute: the government has made a commitment to maintain the Triple Lock for this Parliament. What is being contested is whether that commitment should extend beyond the current political cycle, and whether the formula itself needs structural review.
For more than 12 million pensioners, the annual uprating affects the amount of State Pension they receive.
