Plans to reform the state pension will be unveiled next week and are expected to include a new flat-rate scheme to start in 2015 or 2016.
The flat-rate pension could be worth at least £155 for new pensioners, the BBC reports.
This would also be higher than the figure of £140 mooted by Chancellor George Osborne in last week's Budget.
Detailed plans are expected to be published next week outlining how the system would be introduced.
The current full state pension is £97.65 a week for men and women, but is topped up to ensure a minimum income of £132.60.
A minimum income guarantee also ensures couples get £202.40 a week through the means-tested pensions credit.
Hargreaves Lansdown's Laith Khalaf told the Telegraph: "The way we imagine it working is that all the elements of the existing system are rolled into one into a simplified state pension.
"The winners will include lower earners, women who have taken time out to raise a family and potentially the self-employed. These people would have typically expected a lower pension than £155.
"Potentially any high earners who were expecting a higher pension of £155 because of the earnings related state pension - known as the second pension."
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