Those in the 25-34 years old category were saving eight per cent of their income every month. This is £103 in real terms and up from 7.2 per cent in the previous quarter.
NS&I questioned over 2,400 people aged 16+ for its latest quarterly savings survey.
This figure was higher than the national average of 7.1 per cent, £90 in real terms. This was up from seven per cent in the previous quarter, the lowest level in over a year.

The best tactic used by 25-34 year olds was the use of savings goals to motivate themselves, such as for a house or wedding. Some 45 per cent of 25-34 year olds said they used this tactic, rising to 50 per cent of women in that category.
Those living in Greater London were saving the most overall with an average of 8.2 per cent of their income being saved each month
John Prout, NS&I retail customer director, said: "It is encouraging to see this improvement in savings over recent months and it's particularly good to see such motivation from younger people.
"Setting goals is an effective way to get into a regular savings habit. Not only do they encourage people to stay motivated to save, they provide a real sense of achievement once a goal has been reached."