In the UK, the full state pension is £241.30 per week (£12,547.60 a year), following a 4.8 per cent increase under the triple lock.

According to OECD data on mandatory net pension replacement rates – which measure the proportion of an average worker's pre-retirement net earnings replaced by state and mandatory schemes – the UK sits near the lower end of the G7.

Comparing state pension systems across major global economies reveals a wide variance in how retirement incomes are funded, where contributions go, and how returns are calculated.

Because of these differences, a ‘clear-cut’ comparison is not always possible, financial expert Ms Rachel Vahey told .

Here, takes a look at how the UK state pension compares with packages offered in other nations across the G7.

The UK state pension largely operates as a flat-rate tier dependent on an individual's national insurance contribution record rather than lifetime earnings.

To receive the full £241.30 per week, retirees generally require 35 qualifying years of National Insurance contributions.

While the state pension rate is currently protected by the triple lock policy – which guarantees annual increases by whichever is highest between inflation, average wage growth, or 2.5 per cent – Ms Vahey put the policy in perspective: “By a number of measures, the UK state pension is less generous than elsewhere in the G7.

“Notably it replaces a much smaller percentage of average incomes.”

According to OECD data, the UK offers a relatively low state-only net replacement rate – around 43 per cent compared to continental Europe.

Instead, the country’s framework leans heavily on workplace automatic enrollment to generate private pension top-ups for retirees, pushing the total mandatory replacement rate closer to 54 per cent.

The US social security system is explicitly earnings-related, funded through federal payroll taxes (FICA).

Unlike the UK’s flat-rate sum, an individual's monthly benefit is calculated using their 35 highest-earning years, adjusted for inflation, yielding an average mandatory net replacement rate of around 52 per cent.

While average monthly payouts hover around $1,900 (£1,420), high earners who defer claiming until age 70 can receive maximum monthly benefits of more than $4,800 (£3,629).

However, US retirees often face higher out-of-pocket medical expenses, as Medicare coverage requires supplemental insurance premiums and deductibles.

Unlike the UK flat-rate model, high earners in the US receive far higher state payouts, while low earners receive significantly less.

Germany operates a points-based, pay-as-you-go system () where workers earn points each year based on how their salary compares to the national average.

This earnings-related structure yields a mandatory net replacement rate of around 55 per cent – a figure that reflects a “yawning gap” in comparison to the UK, said Ms Vahey.

Because benefits reflect historical salary rather than a fixed minimum, Germany achieves a significantly higher wage replacement rate than the UK for long-term workers.

However, the system faces immense demographic pressure, prompting ongoing political debate over tax subsidies and raising the retirement age to 67.

France boasts one of the most generous state pension structures in the G7, providing a high income replacement rate primarily funded through substantial social security contributions.

The core state pension guarantees up to 50 per cent of a worker's average salary over their 25 best-earning years, topped up by mandatory occupational schemes () to deliver a total mandatory net replacement rate of around 72 per cent.

While French pensioners enjoy strong financial protection and early retirement options relative to the UK, the fiscal sustainability of the system triggered widespread industrial action over plans to raise the legal retirement age last year.

Italy spends among the highest proportions of GDP on pensions within the OECD.

Using a contributory model (), lifetime contributions are accumulated, adjusted for economic growth, and converted into an annuity at retirement.

With a mandatory net replacement rate of around 83 per cent for long-term workers, this structure tops the G7.

“[Italy’s scheme] replaces more than three quarters of incomes,” pointed out Ms Vahey.

Comparing this to the UK, she said: “The difference is striking.

“But bigger is not automatically better – the OECD has already warned that Italy’s costly pension system needs reform.”

Canada’s retirement scheme is closer to a hybrid model, split between the Old Age Security (OAS) program and the Canada Pension Plan (CPP). OAS provides a flat-rate benefit similar to the UK state pension for residents meeting residency requirements, funded out of general tax revenues.

The CPP (or QPP in Quebec) acts as an additional earnings-related tier funded by mandatory employee and employer contributions, bringing Canada's combined mandatory net replacement rate to roughly 53 per cent.

While the UK splits its system between a state flat rate and private workplace pensions, Canada incorporates both the flat-rate safety net and the earnings-related tier directly into its public framework.

Japan runs a two-tiered public pension framework to support its rapidly ageing population, delivering a combined mandatory net replacement rate of around 49 per cent.

The National Pension () provides a flat-rate basic payout, which is supplemented by the earnings-related Employees' Pension Insurance for salaried workers.

While Japan's basic tier closely resembles the UK state pension, its mandatory second tier provides a public earnings-related safety net that the UK leaves to the private workplace sector.